1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 27eb8f069SAndrzej Hajda /* 37eb8f069SAndrzej Hajda * Samsung SoC MIPI DSI Master driver. 47eb8f069SAndrzej Hajda * 57eb8f069SAndrzej Hajda * Copyright (c) 2014 Samsung Electronics Co., Ltd 67eb8f069SAndrzej Hajda * 77eb8f069SAndrzej Hajda * Contacts: Tomasz Figa <t.figa@samsung.com> 87eb8f069SAndrzej Hajda */ 97eb8f069SAndrzej Hajda 107eb8f069SAndrzej Hajda #include <linux/clk.h> 112bda34d7SSam Ravnborg #include <linux/delay.h> 122bda34d7SSam Ravnborg #include <linux/component.h> 13e17ddeccSYoungJun Cho #include <linux/gpio/consumer.h> 147eb8f069SAndrzej Hajda #include <linux/irq.h> 159a320415SYoungJun Cho #include <linux/of_device.h> 16e17ddeccSYoungJun Cho #include <linux/of_gpio.h> 17f5f3b9baSHyungwon Hwang #include <linux/of_graph.h> 187eb8f069SAndrzej Hajda #include <linux/phy/phy.h> 197eb8f069SAndrzej Hajda #include <linux/regulator/consumer.h> 202bda34d7SSam Ravnborg 212bda34d7SSam Ravnborg #include <asm/unaligned.h> 227eb8f069SAndrzej Hajda 237eb8f069SAndrzej Hajda #include <video/mipi_display.h> 247eb8f069SAndrzej Hajda #include <video/videomode.h> 257eb8f069SAndrzej Hajda 262bda34d7SSam Ravnborg #include <drm/drm_atomic_helper.h> 27ee68c743SBoris Brezillon #include <drm/drm_bridge.h> 282bda34d7SSam Ravnborg #include <drm/drm_fb_helper.h> 292bda34d7SSam Ravnborg #include <drm/drm_mipi_dsi.h> 302bda34d7SSam Ravnborg #include <drm/drm_panel.h> 312bda34d7SSam Ravnborg #include <drm/drm_print.h> 322bda34d7SSam Ravnborg #include <drm/drm_probe_helper.h> 333e1fe32dSThomas Zimmermann #include <drm/drm_simple_kms_helper.h> 342bda34d7SSam Ravnborg 35e17ddeccSYoungJun Cho #include "exynos_drm_crtc.h" 367eb8f069SAndrzej Hajda #include "exynos_drm_drv.h" 377eb8f069SAndrzej Hajda 387eb8f069SAndrzej Hajda /* returns true iff both arguments logically differs */ 397eb8f069SAndrzej Hajda #define NEQV(a, b) (!(a) ^ !(b)) 407eb8f069SAndrzej Hajda 417eb8f069SAndrzej Hajda /* DSIM_STATUS */ 427eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0) 437eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CLK (1 << 8) 447eb8f069SAndrzej Hajda #define DSIM_TX_READY_HS_CLK (1 << 10) 457eb8f069SAndrzej Hajda #define DSIM_PLL_STABLE (1 << 31) 467eb8f069SAndrzej Hajda 477eb8f069SAndrzej Hajda /* DSIM_SWRST */ 487eb8f069SAndrzej Hajda #define DSIM_FUNCRST (1 << 16) 497eb8f069SAndrzej Hajda #define DSIM_SWRST (1 << 0) 507eb8f069SAndrzej Hajda 517eb8f069SAndrzej Hajda /* DSIM_TIMEOUT */ 527eb8f069SAndrzej Hajda #define DSIM_LPDR_TIMEOUT(x) ((x) << 0) 537eb8f069SAndrzej Hajda #define DSIM_BTA_TIMEOUT(x) ((x) << 16) 547eb8f069SAndrzej Hajda 557eb8f069SAndrzej Hajda /* DSIM_CLKCTRL */ 567eb8f069SAndrzej Hajda #define DSIM_ESC_PRESCALER(x) (((x) & 0xffff) << 0) 577eb8f069SAndrzej Hajda #define DSIM_ESC_PRESCALER_MASK (0xffff << 0) 587eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_CLK (1 << 19) 597eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_DATA(x) (((x) & 0xf) << 20) 607eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_DATA_MASK (0xf << 20) 617eb8f069SAndrzej Hajda #define DSIM_BYTE_CLKEN (1 << 24) 627eb8f069SAndrzej Hajda #define DSIM_BYTE_CLK_SRC(x) (((x) & 0x3) << 25) 637eb8f069SAndrzej Hajda #define DSIM_BYTE_CLK_SRC_MASK (0x3 << 25) 647eb8f069SAndrzej Hajda #define DSIM_PLL_BYPASS (1 << 27) 657eb8f069SAndrzej Hajda #define DSIM_ESC_CLKEN (1 << 28) 667eb8f069SAndrzej Hajda #define DSIM_TX_REQUEST_HSCLK (1 << 31) 677eb8f069SAndrzej Hajda 687eb8f069SAndrzej Hajda /* DSIM_CONFIG */ 697eb8f069SAndrzej Hajda #define DSIM_LANE_EN_CLK (1 << 0) 707eb8f069SAndrzej Hajda #define DSIM_LANE_EN(x) (((x) & 0xf) << 1) 717eb8f069SAndrzej Hajda #define DSIM_NUM_OF_DATA_LANE(x) (((x) & 0x3) << 5) 727eb8f069SAndrzej Hajda #define DSIM_SUB_PIX_FORMAT(x) (((x) & 0x7) << 8) 737eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_MASK (0x7 << 12) 747eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB888 (0x7 << 12) 757eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB666 (0x6 << 12) 767eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB666_P (0x5 << 12) 777eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB565 (0x4 << 12) 787eb8f069SAndrzej Hajda #define DSIM_SUB_VC (((x) & 0x3) << 16) 797eb8f069SAndrzej Hajda #define DSIM_MAIN_VC (((x) & 0x3) << 18) 807eb8f069SAndrzej Hajda #define DSIM_HSA_MODE (1 << 20) 817eb8f069SAndrzej Hajda #define DSIM_HBP_MODE (1 << 21) 827eb8f069SAndrzej Hajda #define DSIM_HFP_MODE (1 << 22) 837eb8f069SAndrzej Hajda #define DSIM_HSE_MODE (1 << 23) 847eb8f069SAndrzej Hajda #define DSIM_AUTO_MODE (1 << 24) 857eb8f069SAndrzej Hajda #define DSIM_VIDEO_MODE (1 << 25) 867eb8f069SAndrzej Hajda #define DSIM_BURST_MODE (1 << 26) 877eb8f069SAndrzej Hajda #define DSIM_SYNC_INFORM (1 << 27) 887eb8f069SAndrzej Hajda #define DSIM_EOT_DISABLE (1 << 28) 897eb8f069SAndrzej Hajda #define DSIM_MFLUSH_VS (1 << 29) 906bdc92eeSKrzysztof Kozlowski /* This flag is valid only for exynos3250/3472/5260/5430 */ 9178d3a8c6SInki Dae #define DSIM_CLKLANE_STOP (1 << 30) 927eb8f069SAndrzej Hajda 937eb8f069SAndrzej Hajda /* DSIM_ESCMODE */ 947eb8f069SAndrzej Hajda #define DSIM_TX_TRIGGER_RST (1 << 4) 957eb8f069SAndrzej Hajda #define DSIM_TX_LPDT_LP (1 << 6) 967eb8f069SAndrzej Hajda #define DSIM_CMD_LPDT_LP (1 << 7) 977eb8f069SAndrzej Hajda #define DSIM_FORCE_BTA (1 << 16) 987eb8f069SAndrzej Hajda #define DSIM_FORCE_STOP_STATE (1 << 20) 997eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CNT(x) (((x) & 0x7ff) << 21) 1007eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CNT_MASK (0x7ff << 21) 1017eb8f069SAndrzej Hajda 1027eb8f069SAndrzej Hajda /* DSIM_MDRESOL */ 1037eb8f069SAndrzej Hajda #define DSIM_MAIN_STAND_BY (1 << 31) 104d668e8bfSHyungwon Hwang #define DSIM_MAIN_VRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 16) 105d668e8bfSHyungwon Hwang #define DSIM_MAIN_HRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 0) 1067eb8f069SAndrzej Hajda 1077eb8f069SAndrzej Hajda /* DSIM_MVPORCH */ 1087eb8f069SAndrzej Hajda #define DSIM_CMD_ALLOW(x) ((x) << 28) 1097eb8f069SAndrzej Hajda #define DSIM_STABLE_VFP(x) ((x) << 16) 1107eb8f069SAndrzej Hajda #define DSIM_MAIN_VBP(x) ((x) << 0) 1117eb8f069SAndrzej Hajda #define DSIM_CMD_ALLOW_MASK (0xf << 28) 1127eb8f069SAndrzej Hajda #define DSIM_STABLE_VFP_MASK (0x7ff << 16) 1137eb8f069SAndrzej Hajda #define DSIM_MAIN_VBP_MASK (0x7ff << 0) 1147eb8f069SAndrzej Hajda 1157eb8f069SAndrzej Hajda /* DSIM_MHPORCH */ 1167eb8f069SAndrzej Hajda #define DSIM_MAIN_HFP(x) ((x) << 16) 1177eb8f069SAndrzej Hajda #define DSIM_MAIN_HBP(x) ((x) << 0) 1187eb8f069SAndrzej Hajda #define DSIM_MAIN_HFP_MASK ((0xffff) << 16) 1197eb8f069SAndrzej Hajda #define DSIM_MAIN_HBP_MASK ((0xffff) << 0) 1207eb8f069SAndrzej Hajda 1217eb8f069SAndrzej Hajda /* DSIM_MSYNC */ 1227eb8f069SAndrzej Hajda #define DSIM_MAIN_VSA(x) ((x) << 22) 1237eb8f069SAndrzej Hajda #define DSIM_MAIN_HSA(x) ((x) << 0) 1247eb8f069SAndrzej Hajda #define DSIM_MAIN_VSA_MASK ((0x3ff) << 22) 1257eb8f069SAndrzej Hajda #define DSIM_MAIN_HSA_MASK ((0xffff) << 0) 1267eb8f069SAndrzej Hajda 1277eb8f069SAndrzej Hajda /* DSIM_SDRESOL */ 1287eb8f069SAndrzej Hajda #define DSIM_SUB_STANDY(x) ((x) << 31) 1297eb8f069SAndrzej Hajda #define DSIM_SUB_VRESOL(x) ((x) << 16) 1307eb8f069SAndrzej Hajda #define DSIM_SUB_HRESOL(x) ((x) << 0) 1317eb8f069SAndrzej Hajda #define DSIM_SUB_STANDY_MASK ((0x1) << 31) 1327eb8f069SAndrzej Hajda #define DSIM_SUB_VRESOL_MASK ((0x7ff) << 16) 1337eb8f069SAndrzej Hajda #define DSIM_SUB_HRESOL_MASK ((0x7ff) << 0) 1347eb8f069SAndrzej Hajda 1357eb8f069SAndrzej Hajda /* DSIM_INTSRC */ 1367eb8f069SAndrzej Hajda #define DSIM_INT_PLL_STABLE (1 << 31) 1377eb8f069SAndrzej Hajda #define DSIM_INT_SW_RST_RELEASE (1 << 30) 1387eb8f069SAndrzej Hajda #define DSIM_INT_SFR_FIFO_EMPTY (1 << 29) 139e6f988a4SHyungwon Hwang #define DSIM_INT_SFR_HDR_FIFO_EMPTY (1 << 28) 1407eb8f069SAndrzej Hajda #define DSIM_INT_BTA (1 << 25) 1417eb8f069SAndrzej Hajda #define DSIM_INT_FRAME_DONE (1 << 24) 1427eb8f069SAndrzej Hajda #define DSIM_INT_RX_TIMEOUT (1 << 21) 1437eb8f069SAndrzej Hajda #define DSIM_INT_BTA_TIMEOUT (1 << 20) 1447eb8f069SAndrzej Hajda #define DSIM_INT_RX_DONE (1 << 18) 1457eb8f069SAndrzej Hajda #define DSIM_INT_RX_TE (1 << 17) 1467eb8f069SAndrzej Hajda #define DSIM_INT_RX_ACK (1 << 16) 1477eb8f069SAndrzej Hajda #define DSIM_INT_RX_ECC_ERR (1 << 15) 1487eb8f069SAndrzej Hajda #define DSIM_INT_RX_CRC_ERR (1 << 14) 1497eb8f069SAndrzej Hajda 1507eb8f069SAndrzej Hajda /* DSIM_FIFOCTRL */ 1517eb8f069SAndrzej Hajda #define DSIM_RX_DATA_FULL (1 << 25) 1527eb8f069SAndrzej Hajda #define DSIM_RX_DATA_EMPTY (1 << 24) 1537eb8f069SAndrzej Hajda #define DSIM_SFR_HEADER_FULL (1 << 23) 1547eb8f069SAndrzej Hajda #define DSIM_SFR_HEADER_EMPTY (1 << 22) 1557eb8f069SAndrzej Hajda #define DSIM_SFR_PAYLOAD_FULL (1 << 21) 1567eb8f069SAndrzej Hajda #define DSIM_SFR_PAYLOAD_EMPTY (1 << 20) 1577eb8f069SAndrzej Hajda #define DSIM_I80_HEADER_FULL (1 << 19) 1587eb8f069SAndrzej Hajda #define DSIM_I80_HEADER_EMPTY (1 << 18) 1597eb8f069SAndrzej Hajda #define DSIM_I80_PAYLOAD_FULL (1 << 17) 1607eb8f069SAndrzej Hajda #define DSIM_I80_PAYLOAD_EMPTY (1 << 16) 1617eb8f069SAndrzej Hajda #define DSIM_SD_HEADER_FULL (1 << 15) 1627eb8f069SAndrzej Hajda #define DSIM_SD_HEADER_EMPTY (1 << 14) 1637eb8f069SAndrzej Hajda #define DSIM_SD_PAYLOAD_FULL (1 << 13) 1647eb8f069SAndrzej Hajda #define DSIM_SD_PAYLOAD_EMPTY (1 << 12) 1657eb8f069SAndrzej Hajda #define DSIM_MD_HEADER_FULL (1 << 11) 1667eb8f069SAndrzej Hajda #define DSIM_MD_HEADER_EMPTY (1 << 10) 1677eb8f069SAndrzej Hajda #define DSIM_MD_PAYLOAD_FULL (1 << 9) 1687eb8f069SAndrzej Hajda #define DSIM_MD_PAYLOAD_EMPTY (1 << 8) 1697eb8f069SAndrzej Hajda #define DSIM_RX_FIFO (1 << 4) 1707eb8f069SAndrzej Hajda #define DSIM_SFR_FIFO (1 << 3) 1717eb8f069SAndrzej Hajda #define DSIM_I80_FIFO (1 << 2) 1727eb8f069SAndrzej Hajda #define DSIM_SD_FIFO (1 << 1) 1737eb8f069SAndrzej Hajda #define DSIM_MD_FIFO (1 << 0) 1747eb8f069SAndrzej Hajda 1757eb8f069SAndrzej Hajda /* DSIM_PHYACCHR */ 1767eb8f069SAndrzej Hajda #define DSIM_AFC_EN (1 << 14) 1777eb8f069SAndrzej Hajda #define DSIM_AFC_CTL(x) (((x) & 0x7) << 5) 1787eb8f069SAndrzej Hajda 1797eb8f069SAndrzej Hajda /* DSIM_PLLCTRL */ 1807eb8f069SAndrzej Hajda #define DSIM_FREQ_BAND(x) ((x) << 24) 1817eb8f069SAndrzej Hajda #define DSIM_PLL_EN (1 << 23) 1827eb8f069SAndrzej Hajda #define DSIM_PLL_P(x) ((x) << 13) 1837eb8f069SAndrzej Hajda #define DSIM_PLL_M(x) ((x) << 4) 1847eb8f069SAndrzej Hajda #define DSIM_PLL_S(x) ((x) << 1) 1857eb8f069SAndrzej Hajda 1869a320415SYoungJun Cho /* DSIM_PHYCTRL */ 1879a320415SYoungJun Cho #define DSIM_PHYCTRL_ULPS_EXIT(x) (((x) & 0x1ff) << 0) 188e6f988a4SHyungwon Hwang #define DSIM_PHYCTRL_B_DPHYCTL_VREG_LP (1 << 30) 189e6f988a4SHyungwon Hwang #define DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP (1 << 14) 1909a320415SYoungJun Cho 1919a320415SYoungJun Cho /* DSIM_PHYTIMING */ 1929a320415SYoungJun Cho #define DSIM_PHYTIMING_LPX(x) ((x) << 8) 1939a320415SYoungJun Cho #define DSIM_PHYTIMING_HS_EXIT(x) ((x) << 0) 1949a320415SYoungJun Cho 1959a320415SYoungJun Cho /* DSIM_PHYTIMING1 */ 1969a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_PREPARE(x) ((x) << 24) 1979a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_ZERO(x) ((x) << 16) 1989a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_POST(x) ((x) << 8) 1999a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_TRAIL(x) ((x) << 0) 2009a320415SYoungJun Cho 2019a320415SYoungJun Cho /* DSIM_PHYTIMING2 */ 2029a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_PREPARE(x) ((x) << 16) 2039a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_ZERO(x) ((x) << 8) 2049a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_TRAIL(x) ((x) << 0) 2059a320415SYoungJun Cho 2067eb8f069SAndrzej Hajda #define DSI_MAX_BUS_WIDTH 4 2077eb8f069SAndrzej Hajda #define DSI_NUM_VIRTUAL_CHANNELS 4 2087eb8f069SAndrzej Hajda #define DSI_TX_FIFO_SIZE 2048 2097eb8f069SAndrzej Hajda #define DSI_RX_FIFO_SIZE 256 2107eb8f069SAndrzej Hajda #define DSI_XFER_TIMEOUT_MS 100 2117eb8f069SAndrzej Hajda #define DSI_RX_FIFO_EMPTY 0x30800002 2127eb8f069SAndrzej Hajda 21326269af9SHyungwon Hwang #define OLD_SCLK_MIPI_CLK_NAME "pll_clk" 21426269af9SHyungwon Hwang 215a046e7bfSBernard Zhao static const char *const clk_names[5] = { "bus_clk", "sclk_mipi", 216e6f988a4SHyungwon Hwang "phyclk_mipidphy0_bitclkdiv8", "phyclk_mipidphy0_rxclkesc0", 217e6f988a4SHyungwon Hwang "sclk_rgb_vclk_to_dsim0" }; 2180ff03fd1SHyungwon Hwang 2197eb8f069SAndrzej Hajda enum exynos_dsi_transfer_type { 2207eb8f069SAndrzej Hajda EXYNOS_DSI_TX, 2217eb8f069SAndrzej Hajda EXYNOS_DSI_RX, 2227eb8f069SAndrzej Hajda }; 2237eb8f069SAndrzej Hajda 2247eb8f069SAndrzej Hajda struct exynos_dsi_transfer { 2257eb8f069SAndrzej Hajda struct list_head list; 2267eb8f069SAndrzej Hajda struct completion completed; 2277eb8f069SAndrzej Hajda int result; 2286c81e96dSAndrzej Hajda struct mipi_dsi_packet packet; 2297eb8f069SAndrzej Hajda u16 flags; 2307eb8f069SAndrzej Hajda u16 tx_done; 2317eb8f069SAndrzej Hajda 2327eb8f069SAndrzej Hajda u8 *rx_payload; 2337eb8f069SAndrzej Hajda u16 rx_len; 2347eb8f069SAndrzej Hajda u16 rx_done; 2357eb8f069SAndrzej Hajda }; 2367eb8f069SAndrzej Hajda 2377eb8f069SAndrzej Hajda #define DSIM_STATE_ENABLED BIT(0) 2387eb8f069SAndrzej Hajda #define DSIM_STATE_INITIALIZED BIT(1) 2397eb8f069SAndrzej Hajda #define DSIM_STATE_CMD_LPM BIT(2) 2400e480f6fSHyungwon Hwang #define DSIM_STATE_VIDOUT_AVAILABLE BIT(3) 2417eb8f069SAndrzej Hajda 2429a320415SYoungJun Cho struct exynos_dsi_driver_data { 243b115361eSAndrzej Hajda const unsigned int *reg_ofs; 2449a320415SYoungJun Cho unsigned int plltmr_reg; 2459a320415SYoungJun Cho unsigned int has_freqband:1; 24678d3a8c6SInki Dae unsigned int has_clklane_stop:1; 247d668e8bfSHyungwon Hwang unsigned int num_clks; 248d668e8bfSHyungwon Hwang unsigned int max_freq; 249d668e8bfSHyungwon Hwang unsigned int wait_for_reset; 250d668e8bfSHyungwon Hwang unsigned int num_bits_resol; 251b115361eSAndrzej Hajda const unsigned int *reg_values; 2529a320415SYoungJun Cho }; 2539a320415SYoungJun Cho 2547eb8f069SAndrzej Hajda struct exynos_dsi { 2552b8376c8SGustavo Padovan struct drm_encoder encoder; 2567eb8f069SAndrzej Hajda struct mipi_dsi_host dsi_host; 2577eb8f069SAndrzej Hajda struct drm_connector connector; 2587eb8f069SAndrzej Hajda struct drm_panel *panel; 25905193dc3SBoris Brezillon struct list_head bridge_chain; 2606afb7721SMaciej Purski struct drm_bridge *out_bridge; 2617eb8f069SAndrzej Hajda struct device *dev; 2627eb8f069SAndrzej Hajda 2637eb8f069SAndrzej Hajda void __iomem *reg_base; 2647eb8f069SAndrzej Hajda struct phy *phy; 2650ff03fd1SHyungwon Hwang struct clk **clks; 2667eb8f069SAndrzej Hajda struct regulator_bulk_data supplies[2]; 2677eb8f069SAndrzej Hajda int irq; 268e17ddeccSYoungJun Cho int te_gpio; 2697eb8f069SAndrzej Hajda 2707eb8f069SAndrzej Hajda u32 pll_clk_rate; 2717eb8f069SAndrzej Hajda u32 burst_clk_rate; 2727eb8f069SAndrzej Hajda u32 esc_clk_rate; 2737eb8f069SAndrzej Hajda u32 lanes; 2747eb8f069SAndrzej Hajda u32 mode_flags; 2757eb8f069SAndrzej Hajda u32 format; 2767eb8f069SAndrzej Hajda 2777eb8f069SAndrzej Hajda int state; 2787eb8f069SAndrzej Hajda struct drm_property *brightness; 2797eb8f069SAndrzej Hajda struct completion completed; 2807eb8f069SAndrzej Hajda 2817eb8f069SAndrzej Hajda spinlock_t transfer_lock; /* protects transfer_list */ 2827eb8f069SAndrzej Hajda struct list_head transfer_list; 2839a320415SYoungJun Cho 2842154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data; 2852782622eSMaciej Purski struct device_node *in_bridge_node; 2867eb8f069SAndrzej Hajda }; 2877eb8f069SAndrzej Hajda 2887eb8f069SAndrzej Hajda #define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host) 2897eb8f069SAndrzej Hajda #define connector_to_dsi(c) container_of(c, struct exynos_dsi, connector) 2907eb8f069SAndrzej Hajda 2912b8376c8SGustavo Padovan static inline struct exynos_dsi *encoder_to_dsi(struct drm_encoder *e) 2925cd5db80SAndrzej Hajda { 293cf67cc9aSGustavo Padovan return container_of(e, struct exynos_dsi, encoder); 2945cd5db80SAndrzej Hajda } 2955cd5db80SAndrzej Hajda 296d668e8bfSHyungwon Hwang enum reg_idx { 297d668e8bfSHyungwon Hwang DSIM_STATUS_REG, /* Status register */ 298d668e8bfSHyungwon Hwang DSIM_SWRST_REG, /* Software reset register */ 299d668e8bfSHyungwon Hwang DSIM_CLKCTRL_REG, /* Clock control register */ 300d668e8bfSHyungwon Hwang DSIM_TIMEOUT_REG, /* Time out register */ 301d668e8bfSHyungwon Hwang DSIM_CONFIG_REG, /* Configuration register */ 302d668e8bfSHyungwon Hwang DSIM_ESCMODE_REG, /* Escape mode register */ 303d668e8bfSHyungwon Hwang DSIM_MDRESOL_REG, 304d668e8bfSHyungwon Hwang DSIM_MVPORCH_REG, /* Main display Vporch register */ 305d668e8bfSHyungwon Hwang DSIM_MHPORCH_REG, /* Main display Hporch register */ 306d668e8bfSHyungwon Hwang DSIM_MSYNC_REG, /* Main display sync area register */ 307d668e8bfSHyungwon Hwang DSIM_INTSRC_REG, /* Interrupt source register */ 308d668e8bfSHyungwon Hwang DSIM_INTMSK_REG, /* Interrupt mask register */ 309d668e8bfSHyungwon Hwang DSIM_PKTHDR_REG, /* Packet Header FIFO register */ 310d668e8bfSHyungwon Hwang DSIM_PAYLOAD_REG, /* Payload FIFO register */ 311d668e8bfSHyungwon Hwang DSIM_RXFIFO_REG, /* Read FIFO register */ 312d668e8bfSHyungwon Hwang DSIM_FIFOCTRL_REG, /* FIFO status and control register */ 313d668e8bfSHyungwon Hwang DSIM_PLLCTRL_REG, /* PLL control register */ 314d668e8bfSHyungwon Hwang DSIM_PHYCTRL_REG, 315d668e8bfSHyungwon Hwang DSIM_PHYTIMING_REG, 316d668e8bfSHyungwon Hwang DSIM_PHYTIMING1_REG, 317d668e8bfSHyungwon Hwang DSIM_PHYTIMING2_REG, 318d668e8bfSHyungwon Hwang NUM_REGS 319d668e8bfSHyungwon Hwang }; 320bb32e408SAndrzej Hajda 321bb32e408SAndrzej Hajda static inline void exynos_dsi_write(struct exynos_dsi *dsi, enum reg_idx idx, 322bb32e408SAndrzej Hajda u32 val) 323bb32e408SAndrzej Hajda { 3246c81e96dSAndrzej Hajda 325bb32e408SAndrzej Hajda writel(val, dsi->reg_base + dsi->driver_data->reg_ofs[idx]); 326bb32e408SAndrzej Hajda } 327bb32e408SAndrzej Hajda 328bb32e408SAndrzej Hajda static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx) 329bb32e408SAndrzej Hajda { 330bb32e408SAndrzej Hajda return readl(dsi->reg_base + dsi->driver_data->reg_ofs[idx]); 331bb32e408SAndrzej Hajda } 332bb32e408SAndrzej Hajda 333b115361eSAndrzej Hajda static const unsigned int exynos_reg_ofs[] = { 334d668e8bfSHyungwon Hwang [DSIM_STATUS_REG] = 0x00, 335d668e8bfSHyungwon Hwang [DSIM_SWRST_REG] = 0x04, 336d668e8bfSHyungwon Hwang [DSIM_CLKCTRL_REG] = 0x08, 337d668e8bfSHyungwon Hwang [DSIM_TIMEOUT_REG] = 0x0c, 338d668e8bfSHyungwon Hwang [DSIM_CONFIG_REG] = 0x10, 339d668e8bfSHyungwon Hwang [DSIM_ESCMODE_REG] = 0x14, 340d668e8bfSHyungwon Hwang [DSIM_MDRESOL_REG] = 0x18, 341d668e8bfSHyungwon Hwang [DSIM_MVPORCH_REG] = 0x1c, 342d668e8bfSHyungwon Hwang [DSIM_MHPORCH_REG] = 0x20, 343d668e8bfSHyungwon Hwang [DSIM_MSYNC_REG] = 0x24, 344d668e8bfSHyungwon Hwang [DSIM_INTSRC_REG] = 0x2c, 345d668e8bfSHyungwon Hwang [DSIM_INTMSK_REG] = 0x30, 346d668e8bfSHyungwon Hwang [DSIM_PKTHDR_REG] = 0x34, 347d668e8bfSHyungwon Hwang [DSIM_PAYLOAD_REG] = 0x38, 348d668e8bfSHyungwon Hwang [DSIM_RXFIFO_REG] = 0x3c, 349d668e8bfSHyungwon Hwang [DSIM_FIFOCTRL_REG] = 0x44, 350d668e8bfSHyungwon Hwang [DSIM_PLLCTRL_REG] = 0x4c, 351d668e8bfSHyungwon Hwang [DSIM_PHYCTRL_REG] = 0x5c, 352d668e8bfSHyungwon Hwang [DSIM_PHYTIMING_REG] = 0x64, 353d668e8bfSHyungwon Hwang [DSIM_PHYTIMING1_REG] = 0x68, 354d668e8bfSHyungwon Hwang [DSIM_PHYTIMING2_REG] = 0x6c, 355d668e8bfSHyungwon Hwang }; 356d668e8bfSHyungwon Hwang 357b115361eSAndrzej Hajda static const unsigned int exynos5433_reg_ofs[] = { 358e6f988a4SHyungwon Hwang [DSIM_STATUS_REG] = 0x04, 359e6f988a4SHyungwon Hwang [DSIM_SWRST_REG] = 0x0C, 360e6f988a4SHyungwon Hwang [DSIM_CLKCTRL_REG] = 0x10, 361e6f988a4SHyungwon Hwang [DSIM_TIMEOUT_REG] = 0x14, 362e6f988a4SHyungwon Hwang [DSIM_CONFIG_REG] = 0x18, 363e6f988a4SHyungwon Hwang [DSIM_ESCMODE_REG] = 0x1C, 364e6f988a4SHyungwon Hwang [DSIM_MDRESOL_REG] = 0x20, 365e6f988a4SHyungwon Hwang [DSIM_MVPORCH_REG] = 0x24, 366e6f988a4SHyungwon Hwang [DSIM_MHPORCH_REG] = 0x28, 367e6f988a4SHyungwon Hwang [DSIM_MSYNC_REG] = 0x2C, 368e6f988a4SHyungwon Hwang [DSIM_INTSRC_REG] = 0x34, 369e6f988a4SHyungwon Hwang [DSIM_INTMSK_REG] = 0x38, 370e6f988a4SHyungwon Hwang [DSIM_PKTHDR_REG] = 0x3C, 371e6f988a4SHyungwon Hwang [DSIM_PAYLOAD_REG] = 0x40, 372e6f988a4SHyungwon Hwang [DSIM_RXFIFO_REG] = 0x44, 373e6f988a4SHyungwon Hwang [DSIM_FIFOCTRL_REG] = 0x4C, 374e6f988a4SHyungwon Hwang [DSIM_PLLCTRL_REG] = 0x94, 375e6f988a4SHyungwon Hwang [DSIM_PHYCTRL_REG] = 0xA4, 376e6f988a4SHyungwon Hwang [DSIM_PHYTIMING_REG] = 0xB4, 377e6f988a4SHyungwon Hwang [DSIM_PHYTIMING1_REG] = 0xB8, 378e6f988a4SHyungwon Hwang [DSIM_PHYTIMING2_REG] = 0xBC, 379e6f988a4SHyungwon Hwang }; 380e6f988a4SHyungwon Hwang 381d668e8bfSHyungwon Hwang enum reg_value_idx { 382d668e8bfSHyungwon Hwang RESET_TYPE, 383d668e8bfSHyungwon Hwang PLL_TIMER, 384d668e8bfSHyungwon Hwang STOP_STATE_CNT, 385d668e8bfSHyungwon Hwang PHYCTRL_ULPS_EXIT, 386d668e8bfSHyungwon Hwang PHYCTRL_VREG_LP, 387d668e8bfSHyungwon Hwang PHYCTRL_SLEW_UP, 388d668e8bfSHyungwon Hwang PHYTIMING_LPX, 389d668e8bfSHyungwon Hwang PHYTIMING_HS_EXIT, 390d668e8bfSHyungwon Hwang PHYTIMING_CLK_PREPARE, 391d668e8bfSHyungwon Hwang PHYTIMING_CLK_ZERO, 392d668e8bfSHyungwon Hwang PHYTIMING_CLK_POST, 393d668e8bfSHyungwon Hwang PHYTIMING_CLK_TRAIL, 394d668e8bfSHyungwon Hwang PHYTIMING_HS_PREPARE, 395d668e8bfSHyungwon Hwang PHYTIMING_HS_ZERO, 396d668e8bfSHyungwon Hwang PHYTIMING_HS_TRAIL 397d668e8bfSHyungwon Hwang }; 398d668e8bfSHyungwon Hwang 399b115361eSAndrzej Hajda static const unsigned int reg_values[] = { 400d668e8bfSHyungwon Hwang [RESET_TYPE] = DSIM_SWRST, 401d668e8bfSHyungwon Hwang [PLL_TIMER] = 500, 402d668e8bfSHyungwon Hwang [STOP_STATE_CNT] = 0xf, 403d668e8bfSHyungwon Hwang [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x0af), 404d668e8bfSHyungwon Hwang [PHYCTRL_VREG_LP] = 0, 405d668e8bfSHyungwon Hwang [PHYCTRL_SLEW_UP] = 0, 406d668e8bfSHyungwon Hwang [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x06), 407d668e8bfSHyungwon Hwang [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0b), 408d668e8bfSHyungwon Hwang [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x07), 409d668e8bfSHyungwon Hwang [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x27), 410d668e8bfSHyungwon Hwang [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d), 411d668e8bfSHyungwon Hwang [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x08), 412d668e8bfSHyungwon Hwang [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x09), 413d668e8bfSHyungwon Hwang [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0d), 414d668e8bfSHyungwon Hwang [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b), 415d668e8bfSHyungwon Hwang }; 416d668e8bfSHyungwon Hwang 417b115361eSAndrzej Hajda static const unsigned int exynos5422_reg_values[] = { 418fdc2e108SChanho Park [RESET_TYPE] = DSIM_SWRST, 419fdc2e108SChanho Park [PLL_TIMER] = 500, 420fdc2e108SChanho Park [STOP_STATE_CNT] = 0xf, 421fdc2e108SChanho Park [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0xaf), 422fdc2e108SChanho Park [PHYCTRL_VREG_LP] = 0, 423fdc2e108SChanho Park [PHYCTRL_SLEW_UP] = 0, 424fdc2e108SChanho Park [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x08), 425fdc2e108SChanho Park [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0d), 426fdc2e108SChanho Park [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x09), 427fdc2e108SChanho Park [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x30), 428fdc2e108SChanho Park [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0e), 429fdc2e108SChanho Park [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x0a), 430fdc2e108SChanho Park [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x0c), 431fdc2e108SChanho Park [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x11), 432fdc2e108SChanho Park [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0d), 433fdc2e108SChanho Park }; 434fdc2e108SChanho Park 435b115361eSAndrzej Hajda static const unsigned int exynos5433_reg_values[] = { 436e6f988a4SHyungwon Hwang [RESET_TYPE] = DSIM_FUNCRST, 437e6f988a4SHyungwon Hwang [PLL_TIMER] = 22200, 438e6f988a4SHyungwon Hwang [STOP_STATE_CNT] = 0xa, 439e6f988a4SHyungwon Hwang [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x190), 440e6f988a4SHyungwon Hwang [PHYCTRL_VREG_LP] = DSIM_PHYCTRL_B_DPHYCTL_VREG_LP, 441e6f988a4SHyungwon Hwang [PHYCTRL_SLEW_UP] = DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP, 442e6f988a4SHyungwon Hwang [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x07), 443e6f988a4SHyungwon Hwang [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0c), 444e6f988a4SHyungwon Hwang [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x09), 445e6f988a4SHyungwon Hwang [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x2d), 446e6f988a4SHyungwon Hwang [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0e), 447e6f988a4SHyungwon Hwang [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x09), 448e6f988a4SHyungwon Hwang [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x0b), 449e6f988a4SHyungwon Hwang [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x10), 450e6f988a4SHyungwon Hwang [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c), 451e6f988a4SHyungwon Hwang }; 452e6f988a4SHyungwon Hwang 453b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = { 454d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 455473462a1SInki Dae .plltmr_reg = 0x50, 456473462a1SInki Dae .has_freqband = 1, 457473462a1SInki Dae .has_clklane_stop = 1, 458d668e8bfSHyungwon Hwang .num_clks = 2, 459d668e8bfSHyungwon Hwang .max_freq = 1000, 460d668e8bfSHyungwon Hwang .wait_for_reset = 1, 461d668e8bfSHyungwon Hwang .num_bits_resol = 11, 462d668e8bfSHyungwon Hwang .reg_values = reg_values, 463473462a1SInki Dae }; 464473462a1SInki Dae 465b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = { 466d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 4679a320415SYoungJun Cho .plltmr_reg = 0x50, 4689a320415SYoungJun Cho .has_freqband = 1, 46978d3a8c6SInki Dae .has_clklane_stop = 1, 470d668e8bfSHyungwon Hwang .num_clks = 2, 471d668e8bfSHyungwon Hwang .max_freq = 1000, 472d668e8bfSHyungwon Hwang .wait_for_reset = 1, 473d668e8bfSHyungwon Hwang .num_bits_resol = 11, 474d668e8bfSHyungwon Hwang .reg_values = reg_values, 4759a320415SYoungJun Cho }; 4769a320415SYoungJun Cho 477b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = { 478d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 4799a320415SYoungJun Cho .plltmr_reg = 0x58, 480d668e8bfSHyungwon Hwang .num_clks = 2, 481d668e8bfSHyungwon Hwang .max_freq = 1000, 482d668e8bfSHyungwon Hwang .wait_for_reset = 1, 483d668e8bfSHyungwon Hwang .num_bits_resol = 11, 484d668e8bfSHyungwon Hwang .reg_values = reg_values, 4859a320415SYoungJun Cho }; 4869a320415SYoungJun Cho 487b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = { 488e6f988a4SHyungwon Hwang .reg_ofs = exynos5433_reg_ofs, 489e6f988a4SHyungwon Hwang .plltmr_reg = 0xa0, 490e6f988a4SHyungwon Hwang .has_clklane_stop = 1, 491e6f988a4SHyungwon Hwang .num_clks = 5, 492e6f988a4SHyungwon Hwang .max_freq = 1500, 493e6f988a4SHyungwon Hwang .wait_for_reset = 0, 494e6f988a4SHyungwon Hwang .num_bits_resol = 12, 495e6f988a4SHyungwon Hwang .reg_values = exynos5433_reg_values, 496e6f988a4SHyungwon Hwang }; 497e6f988a4SHyungwon Hwang 498b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = { 499fdc2e108SChanho Park .reg_ofs = exynos5433_reg_ofs, 500fdc2e108SChanho Park .plltmr_reg = 0xa0, 501fdc2e108SChanho Park .has_clklane_stop = 1, 502fdc2e108SChanho Park .num_clks = 2, 503fdc2e108SChanho Park .max_freq = 1500, 504fdc2e108SChanho Park .wait_for_reset = 1, 505fdc2e108SChanho Park .num_bits_resol = 12, 506fdc2e108SChanho Park .reg_values = exynos5422_reg_values, 507fdc2e108SChanho Park }; 508fdc2e108SChanho Park 509b115361eSAndrzej Hajda static const struct of_device_id exynos_dsi_of_match[] = { 510473462a1SInki Dae { .compatible = "samsung,exynos3250-mipi-dsi", 511473462a1SInki Dae .data = &exynos3_dsi_driver_data }, 5129a320415SYoungJun Cho { .compatible = "samsung,exynos4210-mipi-dsi", 5139a320415SYoungJun Cho .data = &exynos4_dsi_driver_data }, 5149a320415SYoungJun Cho { .compatible = "samsung,exynos5410-mipi-dsi", 5159a320415SYoungJun Cho .data = &exynos5_dsi_driver_data }, 516fdc2e108SChanho Park { .compatible = "samsung,exynos5422-mipi-dsi", 517fdc2e108SChanho Park .data = &exynos5422_dsi_driver_data }, 518e6f988a4SHyungwon Hwang { .compatible = "samsung,exynos5433-mipi-dsi", 519e6f988a4SHyungwon Hwang .data = &exynos5433_dsi_driver_data }, 5209a320415SYoungJun Cho { } 5219a320415SYoungJun Cho }; 5229a320415SYoungJun Cho 5237eb8f069SAndrzej Hajda static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi) 5247eb8f069SAndrzej Hajda { 5257eb8f069SAndrzej Hajda if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300))) 5267eb8f069SAndrzej Hajda return; 5277eb8f069SAndrzej Hajda 5287eb8f069SAndrzej Hajda dev_err(dsi->dev, "timeout waiting for reset\n"); 5297eb8f069SAndrzej Hajda } 5307eb8f069SAndrzej Hajda 5317eb8f069SAndrzej Hajda static void exynos_dsi_reset(struct exynos_dsi *dsi) 5327eb8f069SAndrzej Hajda { 533bb32e408SAndrzej Hajda u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE]; 534ba12ac2bSHyungwon Hwang 5357eb8f069SAndrzej Hajda reinit_completion(&dsi->completed); 536bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_SWRST_REG, reset_val); 5377eb8f069SAndrzej Hajda } 5387eb8f069SAndrzej Hajda 5397eb8f069SAndrzej Hajda #ifndef MHZ 5407eb8f069SAndrzej Hajda #define MHZ (1000*1000) 5417eb8f069SAndrzej Hajda #endif 5427eb8f069SAndrzej Hajda 5437eb8f069SAndrzej Hajda static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi, 5447eb8f069SAndrzej Hajda unsigned long fin, unsigned long fout, u8 *p, u16 *m, u8 *s) 5457eb8f069SAndrzej Hajda { 5462154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 5477eb8f069SAndrzej Hajda unsigned long best_freq = 0; 5487eb8f069SAndrzej Hajda u32 min_delta = 0xffffffff; 5497eb8f069SAndrzej Hajda u8 p_min, p_max; 5503f649ab7SKees Cook u8 _p, best_p; 5513f649ab7SKees Cook u16 _m, best_m; 5523f649ab7SKees Cook u8 _s, best_s; 5537eb8f069SAndrzej Hajda 5547eb8f069SAndrzej Hajda p_min = DIV_ROUND_UP(fin, (12 * MHZ)); 5557eb8f069SAndrzej Hajda p_max = fin / (6 * MHZ); 5567eb8f069SAndrzej Hajda 5577eb8f069SAndrzej Hajda for (_p = p_min; _p <= p_max; ++_p) { 5587eb8f069SAndrzej Hajda for (_s = 0; _s <= 5; ++_s) { 5597eb8f069SAndrzej Hajda u64 tmp; 5607eb8f069SAndrzej Hajda u32 delta; 5617eb8f069SAndrzej Hajda 5627eb8f069SAndrzej Hajda tmp = (u64)fout * (_p << _s); 5637eb8f069SAndrzej Hajda do_div(tmp, fin); 5647eb8f069SAndrzej Hajda _m = tmp; 5657eb8f069SAndrzej Hajda if (_m < 41 || _m > 125) 5667eb8f069SAndrzej Hajda continue; 5677eb8f069SAndrzej Hajda 5687eb8f069SAndrzej Hajda tmp = (u64)_m * fin; 5697eb8f069SAndrzej Hajda do_div(tmp, _p); 570d668e8bfSHyungwon Hwang if (tmp < 500 * MHZ || 571d668e8bfSHyungwon Hwang tmp > driver_data->max_freq * MHZ) 5727eb8f069SAndrzej Hajda continue; 5737eb8f069SAndrzej Hajda 5747eb8f069SAndrzej Hajda tmp = (u64)_m * fin; 5757eb8f069SAndrzej Hajda do_div(tmp, _p << _s); 5767eb8f069SAndrzej Hajda 5777eb8f069SAndrzej Hajda delta = abs(fout - tmp); 5787eb8f069SAndrzej Hajda if (delta < min_delta) { 5797eb8f069SAndrzej Hajda best_p = _p; 5807eb8f069SAndrzej Hajda best_m = _m; 5817eb8f069SAndrzej Hajda best_s = _s; 5827eb8f069SAndrzej Hajda min_delta = delta; 5837eb8f069SAndrzej Hajda best_freq = tmp; 5847eb8f069SAndrzej Hajda } 5857eb8f069SAndrzej Hajda } 5867eb8f069SAndrzej Hajda } 5877eb8f069SAndrzej Hajda 5887eb8f069SAndrzej Hajda if (best_freq) { 5897eb8f069SAndrzej Hajda *p = best_p; 5907eb8f069SAndrzej Hajda *m = best_m; 5917eb8f069SAndrzej Hajda *s = best_s; 5927eb8f069SAndrzej Hajda } 5937eb8f069SAndrzej Hajda 5947eb8f069SAndrzej Hajda return best_freq; 5957eb8f069SAndrzej Hajda } 5967eb8f069SAndrzej Hajda 5977eb8f069SAndrzej Hajda static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, 5987eb8f069SAndrzej Hajda unsigned long freq) 5997eb8f069SAndrzej Hajda { 6002154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 6017eb8f069SAndrzej Hajda unsigned long fin, fout; 6029a320415SYoungJun Cho int timeout; 6037eb8f069SAndrzej Hajda u8 p, s; 6047eb8f069SAndrzej Hajda u16 m; 6057eb8f069SAndrzej Hajda u32 reg; 6067eb8f069SAndrzej Hajda 60726269af9SHyungwon Hwang fin = dsi->pll_clk_rate; 6087eb8f069SAndrzej Hajda fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s); 6097eb8f069SAndrzej Hajda if (!fout) { 6107eb8f069SAndrzej Hajda dev_err(dsi->dev, 6117eb8f069SAndrzej Hajda "failed to find PLL PMS for requested frequency\n"); 6128525b5ecSYoungJun Cho return 0; 6137eb8f069SAndrzej Hajda } 6149a320415SYoungJun Cho dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s); 6159a320415SYoungJun Cho 616d668e8bfSHyungwon Hwang writel(driver_data->reg_values[PLL_TIMER], 617d668e8bfSHyungwon Hwang dsi->reg_base + driver_data->plltmr_reg); 6189a320415SYoungJun Cho 6199a320415SYoungJun Cho reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s); 6209a320415SYoungJun Cho 6219a320415SYoungJun Cho if (driver_data->has_freqband) { 6229a320415SYoungJun Cho static const unsigned long freq_bands[] = { 6239a320415SYoungJun Cho 100 * MHZ, 120 * MHZ, 160 * MHZ, 200 * MHZ, 6249a320415SYoungJun Cho 270 * MHZ, 320 * MHZ, 390 * MHZ, 450 * MHZ, 6259a320415SYoungJun Cho 510 * MHZ, 560 * MHZ, 640 * MHZ, 690 * MHZ, 6269a320415SYoungJun Cho 770 * MHZ, 870 * MHZ, 950 * MHZ, 6279a320415SYoungJun Cho }; 6289a320415SYoungJun Cho int band; 6297eb8f069SAndrzej Hajda 6307eb8f069SAndrzej Hajda for (band = 0; band < ARRAY_SIZE(freq_bands); ++band) 6317eb8f069SAndrzej Hajda if (fout < freq_bands[band]) 6327eb8f069SAndrzej Hajda break; 6337eb8f069SAndrzej Hajda 6349a320415SYoungJun Cho dev_dbg(dsi->dev, "band %d\n", band); 6357eb8f069SAndrzej Hajda 6369a320415SYoungJun Cho reg |= DSIM_FREQ_BAND(band); 6379a320415SYoungJun Cho } 6387eb8f069SAndrzej Hajda 639bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg); 6407eb8f069SAndrzej Hajda 6417eb8f069SAndrzej Hajda timeout = 1000; 6427eb8f069SAndrzej Hajda do { 6437eb8f069SAndrzej Hajda if (timeout-- == 0) { 6447eb8f069SAndrzej Hajda dev_err(dsi->dev, "PLL failed to stabilize\n"); 6458525b5ecSYoungJun Cho return 0; 6467eb8f069SAndrzej Hajda } 647bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_STATUS_REG); 6487eb8f069SAndrzej Hajda } while ((reg & DSIM_PLL_STABLE) == 0); 6497eb8f069SAndrzej Hajda 6507eb8f069SAndrzej Hajda return fout; 6517eb8f069SAndrzej Hajda } 6527eb8f069SAndrzej Hajda 6537eb8f069SAndrzej Hajda static int exynos_dsi_enable_clock(struct exynos_dsi *dsi) 6547eb8f069SAndrzej Hajda { 6557eb8f069SAndrzej Hajda unsigned long hs_clk, byte_clk, esc_clk; 6567eb8f069SAndrzej Hajda unsigned long esc_div; 6577eb8f069SAndrzej Hajda u32 reg; 6587eb8f069SAndrzej Hajda 6597eb8f069SAndrzej Hajda hs_clk = exynos_dsi_set_pll(dsi, dsi->burst_clk_rate); 6607eb8f069SAndrzej Hajda if (!hs_clk) { 6617eb8f069SAndrzej Hajda dev_err(dsi->dev, "failed to configure DSI PLL\n"); 6627eb8f069SAndrzej Hajda return -EFAULT; 6637eb8f069SAndrzej Hajda } 6647eb8f069SAndrzej Hajda 6657eb8f069SAndrzej Hajda byte_clk = hs_clk / 8; 6667eb8f069SAndrzej Hajda esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate); 6677eb8f069SAndrzej Hajda esc_clk = byte_clk / esc_div; 6687eb8f069SAndrzej Hajda 6697eb8f069SAndrzej Hajda if (esc_clk > 20 * MHZ) { 6707eb8f069SAndrzej Hajda ++esc_div; 6717eb8f069SAndrzej Hajda esc_clk = byte_clk / esc_div; 6727eb8f069SAndrzej Hajda } 6737eb8f069SAndrzej Hajda 6747eb8f069SAndrzej Hajda dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n", 6757eb8f069SAndrzej Hajda hs_clk, byte_clk, esc_clk); 6767eb8f069SAndrzej Hajda 677bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG); 6787eb8f069SAndrzej Hajda reg &= ~(DSIM_ESC_PRESCALER_MASK | DSIM_LANE_ESC_CLK_EN_CLK 6797eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_DATA_MASK | DSIM_PLL_BYPASS 6807eb8f069SAndrzej Hajda | DSIM_BYTE_CLK_SRC_MASK); 6817eb8f069SAndrzej Hajda reg |= DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN 6827eb8f069SAndrzej Hajda | DSIM_ESC_PRESCALER(esc_div) 6837eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_CLK 6847eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1) 6857eb8f069SAndrzej Hajda | DSIM_BYTE_CLK_SRC(0) 6867eb8f069SAndrzej Hajda | DSIM_TX_REQUEST_HSCLK; 687bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg); 6887eb8f069SAndrzej Hajda 6897eb8f069SAndrzej Hajda return 0; 6907eb8f069SAndrzej Hajda } 6917eb8f069SAndrzej Hajda 6929a320415SYoungJun Cho static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) 6939a320415SYoungJun Cho { 6942154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 695b115361eSAndrzej Hajda const unsigned int *reg_values = driver_data->reg_values; 6969a320415SYoungJun Cho u32 reg; 6979a320415SYoungJun Cho 6989a320415SYoungJun Cho if (driver_data->has_freqband) 6999a320415SYoungJun Cho return; 7009a320415SYoungJun Cho 7019a320415SYoungJun Cho /* B D-PHY: D-PHY Master & Slave Analog Block control */ 702d668e8bfSHyungwon Hwang reg = reg_values[PHYCTRL_ULPS_EXIT] | reg_values[PHYCTRL_VREG_LP] | 703d668e8bfSHyungwon Hwang reg_values[PHYCTRL_SLEW_UP]; 704bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYCTRL_REG, reg); 7059a320415SYoungJun Cho 7069a320415SYoungJun Cho /* 7079a320415SYoungJun Cho * T LPX: Transmitted length of any Low-Power state period 7089a320415SYoungJun Cho * T HS-EXIT: Time that the transmitter drives LP-11 following a HS 7099a320415SYoungJun Cho * burst 7109a320415SYoungJun Cho */ 711d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_LPX] | reg_values[PHYTIMING_HS_EXIT]; 712bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING_REG, reg); 7139a320415SYoungJun Cho 7149a320415SYoungJun Cho /* 7159a320415SYoungJun Cho * T CLK-PREPARE: Time that the transmitter drives the Clock Lane LP-00 7169a320415SYoungJun Cho * Line state immediately before the HS-0 Line state starting the 7179a320415SYoungJun Cho * HS transmission 7189a320415SYoungJun Cho * T CLK-ZERO: Time that the transmitter drives the HS-0 state prior to 7199a320415SYoungJun Cho * transmitting the Clock. 7209a320415SYoungJun Cho * T CLK_POST: Time that the transmitter continues to send HS clock 7219a320415SYoungJun Cho * after the last associated Data Lane has transitioned to LP Mode 7229a320415SYoungJun Cho * Interval is defined as the period from the end of T HS-TRAIL to 7239a320415SYoungJun Cho * the beginning of T CLK-TRAIL 7249a320415SYoungJun Cho * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after 7259a320415SYoungJun Cho * the last payload clock bit of a HS transmission burst 7269a320415SYoungJun Cho */ 727d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_CLK_PREPARE] | 728d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_ZERO] | 729d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_POST] | 730d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_TRAIL]; 731d668e8bfSHyungwon Hwang 732bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING1_REG, reg); 7339a320415SYoungJun Cho 7349a320415SYoungJun Cho /* 7359a320415SYoungJun Cho * T HS-PREPARE: Time that the transmitter drives the Data Lane LP-00 7369a320415SYoungJun Cho * Line state immediately before the HS-0 Line state starting the 7379a320415SYoungJun Cho * HS transmission 7389a320415SYoungJun Cho * T HS-ZERO: Time that the transmitter drives the HS-0 state prior to 7399a320415SYoungJun Cho * transmitting the Sync sequence. 7409a320415SYoungJun Cho * T HS-TRAIL: Time that the transmitter drives the flipped differential 7419a320415SYoungJun Cho * state after last payload data bit of a HS transmission burst 7429a320415SYoungJun Cho */ 743d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_HS_PREPARE] | reg_values[PHYTIMING_HS_ZERO] | 744d668e8bfSHyungwon Hwang reg_values[PHYTIMING_HS_TRAIL]; 745bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING2_REG, reg); 7469a320415SYoungJun Cho } 7479a320415SYoungJun Cho 7487eb8f069SAndrzej Hajda static void exynos_dsi_disable_clock(struct exynos_dsi *dsi) 7497eb8f069SAndrzej Hajda { 7507eb8f069SAndrzej Hajda u32 reg; 7517eb8f069SAndrzej Hajda 752bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG); 7537eb8f069SAndrzej Hajda reg &= ~(DSIM_LANE_ESC_CLK_EN_CLK | DSIM_LANE_ESC_CLK_EN_DATA_MASK 7547eb8f069SAndrzej Hajda | DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN); 755bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg); 7567eb8f069SAndrzej Hajda 757bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_PLLCTRL_REG); 7587eb8f069SAndrzej Hajda reg &= ~DSIM_PLL_EN; 759bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg); 7607eb8f069SAndrzej Hajda } 7617eb8f069SAndrzej Hajda 762e6f988a4SHyungwon Hwang static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane) 763e6f988a4SHyungwon Hwang { 764bb32e408SAndrzej Hajda u32 reg = exynos_dsi_read(dsi, DSIM_CONFIG_REG); 765e6f988a4SHyungwon Hwang reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK | 766e6f988a4SHyungwon Hwang DSIM_LANE_EN(lane)); 767bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg); 768e6f988a4SHyungwon Hwang } 769e6f988a4SHyungwon Hwang 7707eb8f069SAndrzej Hajda static int exynos_dsi_init_link(struct exynos_dsi *dsi) 7717eb8f069SAndrzej Hajda { 7722154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 7737eb8f069SAndrzej Hajda int timeout; 7747eb8f069SAndrzej Hajda u32 reg; 7757eb8f069SAndrzej Hajda u32 lanes_mask; 7767eb8f069SAndrzej Hajda 7777eb8f069SAndrzej Hajda /* Initialize FIFO pointers */ 778bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG); 7797eb8f069SAndrzej Hajda reg &= ~0x1f; 780bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg); 7817eb8f069SAndrzej Hajda 7827eb8f069SAndrzej Hajda usleep_range(9000, 11000); 7837eb8f069SAndrzej Hajda 7847eb8f069SAndrzej Hajda reg |= 0x1f; 785bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg); 7867eb8f069SAndrzej Hajda usleep_range(9000, 11000); 7877eb8f069SAndrzej Hajda 7887eb8f069SAndrzej Hajda /* DSI configuration */ 7897eb8f069SAndrzej Hajda reg = 0; 7907eb8f069SAndrzej Hajda 7912f36e33aSYoungJun Cho /* 7922f36e33aSYoungJun Cho * The first bit of mode_flags specifies display configuration. 7932f36e33aSYoungJun Cho * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video 7942f36e33aSYoungJun Cho * mode, otherwise it will support command mode. 7952f36e33aSYoungJun Cho */ 7967eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { 7977eb8f069SAndrzej Hajda reg |= DSIM_VIDEO_MODE; 7987eb8f069SAndrzej Hajda 7992f36e33aSYoungJun Cho /* 8002f36e33aSYoungJun Cho * The user manual describes that following bits are ignored in 8012f36e33aSYoungJun Cho * command mode. 8022f36e33aSYoungJun Cho */ 8037eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH)) 8047eb8f069SAndrzej Hajda reg |= DSIM_MFLUSH_VS; 8057eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) 8067eb8f069SAndrzej Hajda reg |= DSIM_SYNC_INFORM; 8077eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) 8087eb8f069SAndrzej Hajda reg |= DSIM_BURST_MODE; 8097eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT) 8107eb8f069SAndrzej Hajda reg |= DSIM_AUTO_MODE; 8117eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE) 8127eb8f069SAndrzej Hajda reg |= DSIM_HSE_MODE; 8137eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HFP)) 8147eb8f069SAndrzej Hajda reg |= DSIM_HFP_MODE; 8157eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HBP)) 8167eb8f069SAndrzej Hajda reg |= DSIM_HBP_MODE; 8177eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSA)) 8187eb8f069SAndrzej Hajda reg |= DSIM_HSA_MODE; 8197eb8f069SAndrzej Hajda } 8207eb8f069SAndrzej Hajda 8212f36e33aSYoungJun Cho if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET)) 8222f36e33aSYoungJun Cho reg |= DSIM_EOT_DISABLE; 8232f36e33aSYoungJun Cho 8247eb8f069SAndrzej Hajda switch (dsi->format) { 8257eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB888: 8267eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB888; 8277eb8f069SAndrzej Hajda break; 8287eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB666: 8297eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB666; 8307eb8f069SAndrzej Hajda break; 8317eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB666_PACKED: 8327eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB666_P; 8337eb8f069SAndrzej Hajda break; 8347eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB565: 8357eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB565; 8367eb8f069SAndrzej Hajda break; 8377eb8f069SAndrzej Hajda default: 8387eb8f069SAndrzej Hajda dev_err(dsi->dev, "invalid pixel format\n"); 8397eb8f069SAndrzej Hajda return -EINVAL; 8407eb8f069SAndrzej Hajda } 8417eb8f069SAndrzej Hajda 84278d3a8c6SInki Dae /* 84378d3a8c6SInki Dae * Use non-continuous clock mode if the periparal wants and 84478d3a8c6SInki Dae * host controller supports 84578d3a8c6SInki Dae * 84678d3a8c6SInki Dae * In non-continous clock mode, host controller will turn off 84778d3a8c6SInki Dae * the HS clock between high-speed transmissions to reduce 84878d3a8c6SInki Dae * power consumption. 84978d3a8c6SInki Dae */ 85078d3a8c6SInki Dae if (driver_data->has_clklane_stop && 85178d3a8c6SInki Dae dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) { 85278d3a8c6SInki Dae reg |= DSIM_CLKLANE_STOP; 85378d3a8c6SInki Dae } 854bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg); 855e6f988a4SHyungwon Hwang 856e6f988a4SHyungwon Hwang lanes_mask = BIT(dsi->lanes) - 1; 857e6f988a4SHyungwon Hwang exynos_dsi_enable_lane(dsi, lanes_mask); 85878d3a8c6SInki Dae 8597eb8f069SAndrzej Hajda /* Check clock and data lane state are stop state */ 8607eb8f069SAndrzej Hajda timeout = 100; 8617eb8f069SAndrzej Hajda do { 8627eb8f069SAndrzej Hajda if (timeout-- == 0) { 8637eb8f069SAndrzej Hajda dev_err(dsi->dev, "waiting for bus lanes timed out\n"); 8647eb8f069SAndrzej Hajda return -EFAULT; 8657eb8f069SAndrzej Hajda } 8667eb8f069SAndrzej Hajda 867bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_STATUS_REG); 8687eb8f069SAndrzej Hajda if ((reg & DSIM_STOP_STATE_DAT(lanes_mask)) 8697eb8f069SAndrzej Hajda != DSIM_STOP_STATE_DAT(lanes_mask)) 8707eb8f069SAndrzej Hajda continue; 8717eb8f069SAndrzej Hajda } while (!(reg & (DSIM_STOP_STATE_CLK | DSIM_TX_READY_HS_CLK))); 8727eb8f069SAndrzej Hajda 873bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 8747eb8f069SAndrzej Hajda reg &= ~DSIM_STOP_STATE_CNT_MASK; 875d668e8bfSHyungwon Hwang reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]); 876bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, reg); 8777eb8f069SAndrzej Hajda 8787eb8f069SAndrzej Hajda reg = DSIM_BTA_TIMEOUT(0xff) | DSIM_LPDR_TIMEOUT(0xffff); 879bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_TIMEOUT_REG, reg); 8807eb8f069SAndrzej Hajda 8817eb8f069SAndrzej Hajda return 0; 8827eb8f069SAndrzej Hajda } 8837eb8f069SAndrzej Hajda 8847eb8f069SAndrzej Hajda static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) 8857eb8f069SAndrzej Hajda { 886e8929999SAndrzej Hajda struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; 887d668e8bfSHyungwon Hwang unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; 8887eb8f069SAndrzej Hajda u32 reg; 8897eb8f069SAndrzej Hajda 8907eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { 8917eb8f069SAndrzej Hajda reg = DSIM_CMD_ALLOW(0xf) 892e8929999SAndrzej Hajda | DSIM_STABLE_VFP(m->vsync_start - m->vdisplay) 893e8929999SAndrzej Hajda | DSIM_MAIN_VBP(m->vtotal - m->vsync_end); 894bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MVPORCH_REG, reg); 8957eb8f069SAndrzej Hajda 896e8929999SAndrzej Hajda reg = DSIM_MAIN_HFP(m->hsync_start - m->hdisplay) 897e8929999SAndrzej Hajda | DSIM_MAIN_HBP(m->htotal - m->hsync_end); 898bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MHPORCH_REG, reg); 8997eb8f069SAndrzej Hajda 900e8929999SAndrzej Hajda reg = DSIM_MAIN_VSA(m->vsync_end - m->vsync_start) 901e8929999SAndrzej Hajda | DSIM_MAIN_HSA(m->hsync_end - m->hsync_start); 902bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MSYNC_REG, reg); 9037eb8f069SAndrzej Hajda } 904e8929999SAndrzej Hajda reg = DSIM_MAIN_HRESOL(m->hdisplay, num_bits_resol) | 905e8929999SAndrzej Hajda DSIM_MAIN_VRESOL(m->vdisplay, num_bits_resol); 9067eb8f069SAndrzej Hajda 907bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg); 9087eb8f069SAndrzej Hajda 909e8929999SAndrzej Hajda dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay); 9107eb8f069SAndrzej Hajda } 9117eb8f069SAndrzej Hajda 9127eb8f069SAndrzej Hajda static void exynos_dsi_set_display_enable(struct exynos_dsi *dsi, bool enable) 9137eb8f069SAndrzej Hajda { 9147eb8f069SAndrzej Hajda u32 reg; 9157eb8f069SAndrzej Hajda 916bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_MDRESOL_REG); 9177eb8f069SAndrzej Hajda if (enable) 9187eb8f069SAndrzej Hajda reg |= DSIM_MAIN_STAND_BY; 9197eb8f069SAndrzej Hajda else 9207eb8f069SAndrzej Hajda reg &= ~DSIM_MAIN_STAND_BY; 921bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg); 9227eb8f069SAndrzej Hajda } 9237eb8f069SAndrzej Hajda 9247eb8f069SAndrzej Hajda static int exynos_dsi_wait_for_hdr_fifo(struct exynos_dsi *dsi) 9257eb8f069SAndrzej Hajda { 9267eb8f069SAndrzej Hajda int timeout = 2000; 9277eb8f069SAndrzej Hajda 9287eb8f069SAndrzej Hajda do { 929bb32e408SAndrzej Hajda u32 reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG); 9307eb8f069SAndrzej Hajda 9317eb8f069SAndrzej Hajda if (!(reg & DSIM_SFR_HEADER_FULL)) 9327eb8f069SAndrzej Hajda return 0; 9337eb8f069SAndrzej Hajda 9347eb8f069SAndrzej Hajda if (!cond_resched()) 9357eb8f069SAndrzej Hajda usleep_range(950, 1050); 9367eb8f069SAndrzej Hajda } while (--timeout); 9377eb8f069SAndrzej Hajda 9387eb8f069SAndrzej Hajda return -ETIMEDOUT; 9397eb8f069SAndrzej Hajda } 9407eb8f069SAndrzej Hajda 9417eb8f069SAndrzej Hajda static void exynos_dsi_set_cmd_lpm(struct exynos_dsi *dsi, bool lpm) 9427eb8f069SAndrzej Hajda { 943bb32e408SAndrzej Hajda u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 9447eb8f069SAndrzej Hajda 9457eb8f069SAndrzej Hajda if (lpm) 9467eb8f069SAndrzej Hajda v |= DSIM_CMD_LPDT_LP; 9477eb8f069SAndrzej Hajda else 9487eb8f069SAndrzej Hajda v &= ~DSIM_CMD_LPDT_LP; 9497eb8f069SAndrzej Hajda 950bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v); 9517eb8f069SAndrzej Hajda } 9527eb8f069SAndrzej Hajda 9537eb8f069SAndrzej Hajda static void exynos_dsi_force_bta(struct exynos_dsi *dsi) 9547eb8f069SAndrzej Hajda { 955bb32e408SAndrzej Hajda u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 9567eb8f069SAndrzej Hajda v |= DSIM_FORCE_BTA; 957bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v); 9587eb8f069SAndrzej Hajda } 9597eb8f069SAndrzej Hajda 9607eb8f069SAndrzej Hajda static void exynos_dsi_send_to_fifo(struct exynos_dsi *dsi, 9617eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 9627eb8f069SAndrzej Hajda { 9637eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 9646c81e96dSAndrzej Hajda struct mipi_dsi_packet *pkt = &xfer->packet; 9656c81e96dSAndrzej Hajda const u8 *payload = pkt->payload + xfer->tx_done; 9666c81e96dSAndrzej Hajda u16 length = pkt->payload_length - xfer->tx_done; 9677eb8f069SAndrzej Hajda bool first = !xfer->tx_done; 9687eb8f069SAndrzej Hajda u32 reg; 9697eb8f069SAndrzej Hajda 9709cdf0ed2SKrzysztof Kozlowski dev_dbg(dev, "< xfer %pK: tx len %u, done %u, rx len %u, done %u\n", 9716c81e96dSAndrzej Hajda xfer, length, xfer->tx_done, xfer->rx_len, xfer->rx_done); 9727eb8f069SAndrzej Hajda 9737eb8f069SAndrzej Hajda if (length > DSI_TX_FIFO_SIZE) 9747eb8f069SAndrzej Hajda length = DSI_TX_FIFO_SIZE; 9757eb8f069SAndrzej Hajda 9767eb8f069SAndrzej Hajda xfer->tx_done += length; 9777eb8f069SAndrzej Hajda 9787eb8f069SAndrzej Hajda /* Send payload */ 9797eb8f069SAndrzej Hajda while (length >= 4) { 9806c81e96dSAndrzej Hajda reg = get_unaligned_le32(payload); 981bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg); 9827eb8f069SAndrzej Hajda payload += 4; 9837eb8f069SAndrzej Hajda length -= 4; 9847eb8f069SAndrzej Hajda } 9857eb8f069SAndrzej Hajda 9867eb8f069SAndrzej Hajda reg = 0; 9877eb8f069SAndrzej Hajda switch (length) { 9887eb8f069SAndrzej Hajda case 3: 9897eb8f069SAndrzej Hajda reg |= payload[2] << 16; 990df561f66SGustavo A. R. Silva fallthrough; 9917eb8f069SAndrzej Hajda case 2: 9927eb8f069SAndrzej Hajda reg |= payload[1] << 8; 993df561f66SGustavo A. R. Silva fallthrough; 9947eb8f069SAndrzej Hajda case 1: 9957eb8f069SAndrzej Hajda reg |= payload[0]; 996bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg); 9977eb8f069SAndrzej Hajda break; 9987eb8f069SAndrzej Hajda } 9997eb8f069SAndrzej Hajda 10007eb8f069SAndrzej Hajda /* Send packet header */ 10017eb8f069SAndrzej Hajda if (!first) 10027eb8f069SAndrzej Hajda return; 10037eb8f069SAndrzej Hajda 10046c81e96dSAndrzej Hajda reg = get_unaligned_le32(pkt->header); 10057eb8f069SAndrzej Hajda if (exynos_dsi_wait_for_hdr_fifo(dsi)) { 10067eb8f069SAndrzej Hajda dev_err(dev, "waiting for header FIFO timed out\n"); 10077eb8f069SAndrzej Hajda return; 10087eb8f069SAndrzej Hajda } 10097eb8f069SAndrzej Hajda 10107eb8f069SAndrzej Hajda if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM, 10117eb8f069SAndrzej Hajda dsi->state & DSIM_STATE_CMD_LPM)) { 10127eb8f069SAndrzej Hajda exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM); 10137eb8f069SAndrzej Hajda dsi->state ^= DSIM_STATE_CMD_LPM; 10147eb8f069SAndrzej Hajda } 10157eb8f069SAndrzej Hajda 1016bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PKTHDR_REG, reg); 10177eb8f069SAndrzej Hajda 10187eb8f069SAndrzej Hajda if (xfer->flags & MIPI_DSI_MSG_REQ_ACK) 10197eb8f069SAndrzej Hajda exynos_dsi_force_bta(dsi); 10207eb8f069SAndrzej Hajda } 10217eb8f069SAndrzej Hajda 10227eb8f069SAndrzej Hajda static void exynos_dsi_read_from_fifo(struct exynos_dsi *dsi, 10237eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 10247eb8f069SAndrzej Hajda { 10257eb8f069SAndrzej Hajda u8 *payload = xfer->rx_payload + xfer->rx_done; 10267eb8f069SAndrzej Hajda bool first = !xfer->rx_done; 10277eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 10287eb8f069SAndrzej Hajda u16 length; 10297eb8f069SAndrzej Hajda u32 reg; 10307eb8f069SAndrzej Hajda 10317eb8f069SAndrzej Hajda if (first) { 1032bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10337eb8f069SAndrzej Hajda 10347eb8f069SAndrzej Hajda switch (reg & 0x3f) { 10357eb8f069SAndrzej Hajda case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE: 10367eb8f069SAndrzej Hajda case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE: 10377eb8f069SAndrzej Hajda if (xfer->rx_len >= 2) { 10387eb8f069SAndrzej Hajda payload[1] = reg >> 16; 10397eb8f069SAndrzej Hajda ++xfer->rx_done; 10407eb8f069SAndrzej Hajda } 1041df561f66SGustavo A. R. Silva fallthrough; 10427eb8f069SAndrzej Hajda case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE: 10437eb8f069SAndrzej Hajda case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE: 10447eb8f069SAndrzej Hajda payload[0] = reg >> 8; 10457eb8f069SAndrzej Hajda ++xfer->rx_done; 10467eb8f069SAndrzej Hajda xfer->rx_len = xfer->rx_done; 10477eb8f069SAndrzej Hajda xfer->result = 0; 10487eb8f069SAndrzej Hajda goto clear_fifo; 10497eb8f069SAndrzej Hajda case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT: 10507eb8f069SAndrzej Hajda dev_err(dev, "DSI Error Report: 0x%04x\n", 10517eb8f069SAndrzej Hajda (reg >> 8) & 0xffff); 10527eb8f069SAndrzej Hajda xfer->result = 0; 10537eb8f069SAndrzej Hajda goto clear_fifo; 10547eb8f069SAndrzej Hajda } 10557eb8f069SAndrzej Hajda 10567eb8f069SAndrzej Hajda length = (reg >> 8) & 0xffff; 10577eb8f069SAndrzej Hajda if (length > xfer->rx_len) { 10587eb8f069SAndrzej Hajda dev_err(dev, 10597eb8f069SAndrzej Hajda "response too long (%u > %u bytes), stripping\n", 10607eb8f069SAndrzej Hajda xfer->rx_len, length); 10617eb8f069SAndrzej Hajda length = xfer->rx_len; 10627eb8f069SAndrzej Hajda } else if (length < xfer->rx_len) 10637eb8f069SAndrzej Hajda xfer->rx_len = length; 10647eb8f069SAndrzej Hajda } 10657eb8f069SAndrzej Hajda 10667eb8f069SAndrzej Hajda length = xfer->rx_len - xfer->rx_done; 10677eb8f069SAndrzej Hajda xfer->rx_done += length; 10687eb8f069SAndrzej Hajda 10697eb8f069SAndrzej Hajda /* Receive payload */ 10707eb8f069SAndrzej Hajda while (length >= 4) { 1071bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10727eb8f069SAndrzej Hajda payload[0] = (reg >> 0) & 0xff; 10737eb8f069SAndrzej Hajda payload[1] = (reg >> 8) & 0xff; 10747eb8f069SAndrzej Hajda payload[2] = (reg >> 16) & 0xff; 10757eb8f069SAndrzej Hajda payload[3] = (reg >> 24) & 0xff; 10767eb8f069SAndrzej Hajda payload += 4; 10777eb8f069SAndrzej Hajda length -= 4; 10787eb8f069SAndrzej Hajda } 10797eb8f069SAndrzej Hajda 10807eb8f069SAndrzej Hajda if (length) { 1081bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10827eb8f069SAndrzej Hajda switch (length) { 10837eb8f069SAndrzej Hajda case 3: 10847eb8f069SAndrzej Hajda payload[2] = (reg >> 16) & 0xff; 1085df561f66SGustavo A. R. Silva fallthrough; 10867eb8f069SAndrzej Hajda case 2: 10877eb8f069SAndrzej Hajda payload[1] = (reg >> 8) & 0xff; 1088df561f66SGustavo A. R. Silva fallthrough; 10897eb8f069SAndrzej Hajda case 1: 10907eb8f069SAndrzej Hajda payload[0] = reg & 0xff; 10917eb8f069SAndrzej Hajda } 10927eb8f069SAndrzej Hajda } 10937eb8f069SAndrzej Hajda 10947eb8f069SAndrzej Hajda if (xfer->rx_done == xfer->rx_len) 10957eb8f069SAndrzej Hajda xfer->result = 0; 10967eb8f069SAndrzej Hajda 10977eb8f069SAndrzej Hajda clear_fifo: 10987eb8f069SAndrzej Hajda length = DSI_RX_FIFO_SIZE / 4; 10997eb8f069SAndrzej Hajda do { 1100bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 11017eb8f069SAndrzej Hajda if (reg == DSI_RX_FIFO_EMPTY) 11027eb8f069SAndrzej Hajda break; 11037eb8f069SAndrzej Hajda } while (--length); 11047eb8f069SAndrzej Hajda } 11057eb8f069SAndrzej Hajda 11067eb8f069SAndrzej Hajda static void exynos_dsi_transfer_start(struct exynos_dsi *dsi) 11077eb8f069SAndrzej Hajda { 11087eb8f069SAndrzej Hajda unsigned long flags; 11097eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer; 11107eb8f069SAndrzej Hajda bool start = false; 11117eb8f069SAndrzej Hajda 11127eb8f069SAndrzej Hajda again: 11137eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11147eb8f069SAndrzej Hajda 11157eb8f069SAndrzej Hajda if (list_empty(&dsi->transfer_list)) { 11167eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11177eb8f069SAndrzej Hajda return; 11187eb8f069SAndrzej Hajda } 11197eb8f069SAndrzej Hajda 11207eb8f069SAndrzej Hajda xfer = list_first_entry(&dsi->transfer_list, 11217eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list); 11227eb8f069SAndrzej Hajda 11237eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11247eb8f069SAndrzej Hajda 11256c81e96dSAndrzej Hajda if (xfer->packet.payload_length && 11266c81e96dSAndrzej Hajda xfer->tx_done == xfer->packet.payload_length) 11277eb8f069SAndrzej Hajda /* waiting for RX */ 11287eb8f069SAndrzej Hajda return; 11297eb8f069SAndrzej Hajda 11307eb8f069SAndrzej Hajda exynos_dsi_send_to_fifo(dsi, xfer); 11317eb8f069SAndrzej Hajda 11326c81e96dSAndrzej Hajda if (xfer->packet.payload_length || xfer->rx_len) 11337eb8f069SAndrzej Hajda return; 11347eb8f069SAndrzej Hajda 11357eb8f069SAndrzej Hajda xfer->result = 0; 11367eb8f069SAndrzej Hajda complete(&xfer->completed); 11377eb8f069SAndrzej Hajda 11387eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11397eb8f069SAndrzej Hajda 11407eb8f069SAndrzej Hajda list_del_init(&xfer->list); 11417eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 11427eb8f069SAndrzej Hajda 11437eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11447eb8f069SAndrzej Hajda 11457eb8f069SAndrzej Hajda if (start) 11467eb8f069SAndrzej Hajda goto again; 11477eb8f069SAndrzej Hajda } 11487eb8f069SAndrzej Hajda 11497eb8f069SAndrzej Hajda static bool exynos_dsi_transfer_finish(struct exynos_dsi *dsi) 11507eb8f069SAndrzej Hajda { 11517eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer; 11527eb8f069SAndrzej Hajda unsigned long flags; 11537eb8f069SAndrzej Hajda bool start = true; 11547eb8f069SAndrzej Hajda 11557eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11567eb8f069SAndrzej Hajda 11577eb8f069SAndrzej Hajda if (list_empty(&dsi->transfer_list)) { 11587eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11597eb8f069SAndrzej Hajda return false; 11607eb8f069SAndrzej Hajda } 11617eb8f069SAndrzej Hajda 11627eb8f069SAndrzej Hajda xfer = list_first_entry(&dsi->transfer_list, 11637eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list); 11647eb8f069SAndrzej Hajda 11657eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11667eb8f069SAndrzej Hajda 11677eb8f069SAndrzej Hajda dev_dbg(dsi->dev, 11689cdf0ed2SKrzysztof Kozlowski "> xfer %pK, tx_len %zu, tx_done %u, rx_len %u, rx_done %u\n", 11696c81e96dSAndrzej Hajda xfer, xfer->packet.payload_length, xfer->tx_done, xfer->rx_len, 11706c81e96dSAndrzej Hajda xfer->rx_done); 11717eb8f069SAndrzej Hajda 11726c81e96dSAndrzej Hajda if (xfer->tx_done != xfer->packet.payload_length) 11737eb8f069SAndrzej Hajda return true; 11747eb8f069SAndrzej Hajda 11757eb8f069SAndrzej Hajda if (xfer->rx_done != xfer->rx_len) 11767eb8f069SAndrzej Hajda exynos_dsi_read_from_fifo(dsi, xfer); 11777eb8f069SAndrzej Hajda 11787eb8f069SAndrzej Hajda if (xfer->rx_done != xfer->rx_len) 11797eb8f069SAndrzej Hajda return true; 11807eb8f069SAndrzej Hajda 11817eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11827eb8f069SAndrzej Hajda 11837eb8f069SAndrzej Hajda list_del_init(&xfer->list); 11847eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 11857eb8f069SAndrzej Hajda 11867eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11877eb8f069SAndrzej Hajda 11887eb8f069SAndrzej Hajda if (!xfer->rx_len) 11897eb8f069SAndrzej Hajda xfer->result = 0; 11907eb8f069SAndrzej Hajda complete(&xfer->completed); 11917eb8f069SAndrzej Hajda 11927eb8f069SAndrzej Hajda return start; 11937eb8f069SAndrzej Hajda } 11947eb8f069SAndrzej Hajda 11957eb8f069SAndrzej Hajda static void exynos_dsi_remove_transfer(struct exynos_dsi *dsi, 11967eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 11977eb8f069SAndrzej Hajda { 11987eb8f069SAndrzej Hajda unsigned long flags; 11997eb8f069SAndrzej Hajda bool start; 12007eb8f069SAndrzej Hajda 12017eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 12027eb8f069SAndrzej Hajda 12037eb8f069SAndrzej Hajda if (!list_empty(&dsi->transfer_list) && 12047eb8f069SAndrzej Hajda xfer == list_first_entry(&dsi->transfer_list, 12057eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list)) { 12067eb8f069SAndrzej Hajda list_del_init(&xfer->list); 12077eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 12087eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12097eb8f069SAndrzej Hajda if (start) 12107eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12117eb8f069SAndrzej Hajda return; 12127eb8f069SAndrzej Hajda } 12137eb8f069SAndrzej Hajda 12147eb8f069SAndrzej Hajda list_del_init(&xfer->list); 12157eb8f069SAndrzej Hajda 12167eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12177eb8f069SAndrzej Hajda } 12187eb8f069SAndrzej Hajda 12197eb8f069SAndrzej Hajda static int exynos_dsi_transfer(struct exynos_dsi *dsi, 12207eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 12217eb8f069SAndrzej Hajda { 12227eb8f069SAndrzej Hajda unsigned long flags; 12237eb8f069SAndrzej Hajda bool stopped; 12247eb8f069SAndrzej Hajda 12257eb8f069SAndrzej Hajda xfer->tx_done = 0; 12267eb8f069SAndrzej Hajda xfer->rx_done = 0; 12277eb8f069SAndrzej Hajda xfer->result = -ETIMEDOUT; 12287eb8f069SAndrzej Hajda init_completion(&xfer->completed); 12297eb8f069SAndrzej Hajda 12307eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 12317eb8f069SAndrzej Hajda 12327eb8f069SAndrzej Hajda stopped = list_empty(&dsi->transfer_list); 12337eb8f069SAndrzej Hajda list_add_tail(&xfer->list, &dsi->transfer_list); 12347eb8f069SAndrzej Hajda 12357eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12367eb8f069SAndrzej Hajda 12377eb8f069SAndrzej Hajda if (stopped) 12387eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12397eb8f069SAndrzej Hajda 12407eb8f069SAndrzej Hajda wait_for_completion_timeout(&xfer->completed, 12417eb8f069SAndrzej Hajda msecs_to_jiffies(DSI_XFER_TIMEOUT_MS)); 12427eb8f069SAndrzej Hajda if (xfer->result == -ETIMEDOUT) { 12436c81e96dSAndrzej Hajda struct mipi_dsi_packet *pkt = &xfer->packet; 12447eb8f069SAndrzej Hajda exynos_dsi_remove_transfer(dsi, xfer); 12456c81e96dSAndrzej Hajda dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header, 12466c81e96dSAndrzej Hajda (int)pkt->payload_length, pkt->payload); 12477eb8f069SAndrzej Hajda return -ETIMEDOUT; 12487eb8f069SAndrzej Hajda } 12497eb8f069SAndrzej Hajda 12507eb8f069SAndrzej Hajda /* Also covers hardware timeout condition */ 12517eb8f069SAndrzej Hajda return xfer->result; 12527eb8f069SAndrzej Hajda } 12537eb8f069SAndrzej Hajda 12547eb8f069SAndrzej Hajda static irqreturn_t exynos_dsi_irq(int irq, void *dev_id) 12557eb8f069SAndrzej Hajda { 12567eb8f069SAndrzej Hajda struct exynos_dsi *dsi = dev_id; 12577eb8f069SAndrzej Hajda u32 status; 12587eb8f069SAndrzej Hajda 1259bb32e408SAndrzej Hajda status = exynos_dsi_read(dsi, DSIM_INTSRC_REG); 12607eb8f069SAndrzej Hajda if (!status) { 12617eb8f069SAndrzej Hajda static unsigned long int j; 12627eb8f069SAndrzej Hajda if (printk_timed_ratelimit(&j, 500)) 12637eb8f069SAndrzej Hajda dev_warn(dsi->dev, "spurious interrupt\n"); 12647eb8f069SAndrzej Hajda return IRQ_HANDLED; 12657eb8f069SAndrzej Hajda } 1266bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_INTSRC_REG, status); 12677eb8f069SAndrzej Hajda 12687eb8f069SAndrzej Hajda if (status & DSIM_INT_SW_RST_RELEASE) { 1269e6f988a4SHyungwon Hwang u32 mask = ~(DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY | 1270ecf81ed9SAndrzej Hajda DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_RX_ECC_ERR | 1271ecf81ed9SAndrzej Hajda DSIM_INT_SW_RST_RELEASE); 1272bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask); 12737eb8f069SAndrzej Hajda complete(&dsi->completed); 12747eb8f069SAndrzej Hajda return IRQ_HANDLED; 12757eb8f069SAndrzej Hajda } 12767eb8f069SAndrzej Hajda 1277e6f988a4SHyungwon Hwang if (!(status & (DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY | 1278ecf81ed9SAndrzej Hajda DSIM_INT_PLL_STABLE))) 12797eb8f069SAndrzej Hajda return IRQ_HANDLED; 12807eb8f069SAndrzej Hajda 12817eb8f069SAndrzej Hajda if (exynos_dsi_transfer_finish(dsi)) 12827eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12837eb8f069SAndrzej Hajda 12847eb8f069SAndrzej Hajda return IRQ_HANDLED; 12857eb8f069SAndrzej Hajda } 12867eb8f069SAndrzej Hajda 1287e17ddeccSYoungJun Cho static irqreturn_t exynos_dsi_te_irq_handler(int irq, void *dev_id) 1288e17ddeccSYoungJun Cho { 1289e17ddeccSYoungJun Cho struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id; 12902b8376c8SGustavo Padovan struct drm_encoder *encoder = &dsi->encoder; 1291e17ddeccSYoungJun Cho 12920e480f6fSHyungwon Hwang if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE) 1293e17ddeccSYoungJun Cho exynos_drm_crtc_te_handler(encoder->crtc); 1294e17ddeccSYoungJun Cho 1295e17ddeccSYoungJun Cho return IRQ_HANDLED; 1296e17ddeccSYoungJun Cho } 1297e17ddeccSYoungJun Cho 1298e17ddeccSYoungJun Cho static void exynos_dsi_enable_irq(struct exynos_dsi *dsi) 1299e17ddeccSYoungJun Cho { 1300e17ddeccSYoungJun Cho enable_irq(dsi->irq); 1301e17ddeccSYoungJun Cho 1302e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) 1303e17ddeccSYoungJun Cho enable_irq(gpio_to_irq(dsi->te_gpio)); 1304e17ddeccSYoungJun Cho } 1305e17ddeccSYoungJun Cho 1306e17ddeccSYoungJun Cho static void exynos_dsi_disable_irq(struct exynos_dsi *dsi) 1307e17ddeccSYoungJun Cho { 1308e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) 1309e17ddeccSYoungJun Cho disable_irq(gpio_to_irq(dsi->te_gpio)); 1310e17ddeccSYoungJun Cho 1311e17ddeccSYoungJun Cho disable_irq(dsi->irq); 1312e17ddeccSYoungJun Cho } 1313e17ddeccSYoungJun Cho 13147eb8f069SAndrzej Hajda static int exynos_dsi_init(struct exynos_dsi *dsi) 13157eb8f069SAndrzej Hajda { 13162154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1317d668e8bfSHyungwon Hwang 13187eb8f069SAndrzej Hajda exynos_dsi_reset(dsi); 1319e17ddeccSYoungJun Cho exynos_dsi_enable_irq(dsi); 1320e6f988a4SHyungwon Hwang 1321e6f988a4SHyungwon Hwang if (driver_data->reg_values[RESET_TYPE] == DSIM_FUNCRST) 1322e6f988a4SHyungwon Hwang exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1); 1323e6f988a4SHyungwon Hwang 13249a320415SYoungJun Cho exynos_dsi_enable_clock(dsi); 1325d668e8bfSHyungwon Hwang if (driver_data->wait_for_reset) 13267eb8f069SAndrzej Hajda exynos_dsi_wait_for_reset(dsi); 13279a320415SYoungJun Cho exynos_dsi_set_phy_ctrl(dsi); 13287eb8f069SAndrzej Hajda exynos_dsi_init_link(dsi); 13297eb8f069SAndrzej Hajda 13307eb8f069SAndrzej Hajda return 0; 13317eb8f069SAndrzej Hajda } 13327eb8f069SAndrzej Hajda 1333295e7954SAndrzej Hajda static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi, 1334295e7954SAndrzej Hajda struct device *panel) 1335e17ddeccSYoungJun Cho { 1336e17ddeccSYoungJun Cho int ret; 13370cef83a5SYoungJun Cho int te_gpio_irq; 1338e17ddeccSYoungJun Cho 1339295e7954SAndrzej Hajda dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0); 134022e098daSAndrzej Hajda if (dsi->te_gpio == -ENOENT) 134122e098daSAndrzej Hajda return 0; 134222e098daSAndrzej Hajda 1343e17ddeccSYoungJun Cho if (!gpio_is_valid(dsi->te_gpio)) { 1344e17ddeccSYoungJun Cho ret = dsi->te_gpio; 134522e098daSAndrzej Hajda dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret); 1346e17ddeccSYoungJun Cho goto out; 1347e17ddeccSYoungJun Cho } 1348e17ddeccSYoungJun Cho 134951d1decaSHyungwon Hwang ret = gpio_request(dsi->te_gpio, "te_gpio"); 1350e17ddeccSYoungJun Cho if (ret) { 1351e17ddeccSYoungJun Cho dev_err(dsi->dev, "gpio request failed with %d\n", ret); 1352e17ddeccSYoungJun Cho goto out; 1353e17ddeccSYoungJun Cho } 1354e17ddeccSYoungJun Cho 13550cef83a5SYoungJun Cho te_gpio_irq = gpio_to_irq(dsi->te_gpio); 13560cef83a5SYoungJun Cho irq_set_status_flags(te_gpio_irq, IRQ_NOAUTOEN); 135751d1decaSHyungwon Hwang 13580cef83a5SYoungJun Cho ret = request_threaded_irq(te_gpio_irq, exynos_dsi_te_irq_handler, NULL, 1359e17ddeccSYoungJun Cho IRQF_TRIGGER_RISING, "TE", dsi); 1360e17ddeccSYoungJun Cho if (ret) { 1361e17ddeccSYoungJun Cho dev_err(dsi->dev, "request interrupt failed with %d\n", ret); 1362e17ddeccSYoungJun Cho gpio_free(dsi->te_gpio); 1363e17ddeccSYoungJun Cho goto out; 1364e17ddeccSYoungJun Cho } 1365e17ddeccSYoungJun Cho 1366e17ddeccSYoungJun Cho out: 1367e17ddeccSYoungJun Cho return ret; 1368e17ddeccSYoungJun Cho } 1369e17ddeccSYoungJun Cho 1370e17ddeccSYoungJun Cho static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi) 1371e17ddeccSYoungJun Cho { 1372e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) { 1373e17ddeccSYoungJun Cho free_irq(gpio_to_irq(dsi->te_gpio), dsi); 1374e17ddeccSYoungJun Cho gpio_free(dsi->te_gpio); 1375e17ddeccSYoungJun Cho dsi->te_gpio = -ENOENT; 1376e17ddeccSYoungJun Cho } 1377e17ddeccSYoungJun Cho } 1378e17ddeccSYoungJun Cho 13792b8376c8SGustavo Padovan static void exynos_dsi_enable(struct drm_encoder *encoder) 13807eb8f069SAndrzej Hajda { 1381cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1382f66ff55aSBoris Brezillon struct drm_bridge *iter; 13837eb8f069SAndrzej Hajda int ret; 13847eb8f069SAndrzej Hajda 13857eb8f069SAndrzej Hajda if (dsi->state & DSIM_STATE_ENABLED) 1386b6595dc7SGustavo Padovan return; 13877eb8f069SAndrzej Hajda 1388ba6e4779SInki Dae pm_runtime_get_sync(dsi->dev); 13890e480f6fSHyungwon Hwang dsi->state |= DSIM_STATE_ENABLED; 13900e480f6fSHyungwon Hwang 13918a08f671SMaciej Purski if (dsi->panel) { 1392cdfb8694SAjay Kumar ret = drm_panel_prepare(dsi->panel); 13938a08f671SMaciej Purski if (ret < 0) 13948a08f671SMaciej Purski goto err_put_sync; 13958a08f671SMaciej Purski } else { 1396f66ff55aSBoris Brezillon list_for_each_entry_reverse(iter, &dsi->bridge_chain, 1397f66ff55aSBoris Brezillon chain_node) { 1398f66ff55aSBoris Brezillon if (iter->funcs->pre_enable) 1399f66ff55aSBoris Brezillon iter->funcs->pre_enable(iter); 1400f66ff55aSBoris Brezillon } 14017eb8f069SAndrzej Hajda } 14027eb8f069SAndrzej Hajda 14037eb8f069SAndrzej Hajda exynos_dsi_set_display_mode(dsi); 14047eb8f069SAndrzej Hajda exynos_dsi_set_display_enable(dsi, true); 14057eb8f069SAndrzej Hajda 14068a08f671SMaciej Purski if (dsi->panel) { 1407cdfb8694SAjay Kumar ret = drm_panel_enable(dsi->panel); 14088a08f671SMaciej Purski if (ret < 0) 14098a08f671SMaciej Purski goto err_display_disable; 14108a08f671SMaciej Purski } else { 1411f66ff55aSBoris Brezillon list_for_each_entry(iter, &dsi->bridge_chain, chain_node) { 1412f66ff55aSBoris Brezillon if (iter->funcs->enable) 1413f66ff55aSBoris Brezillon iter->funcs->enable(iter); 1414f66ff55aSBoris Brezillon } 1415cdfb8694SAjay Kumar } 1416cdfb8694SAjay Kumar 14170e480f6fSHyungwon Hwang dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; 14188a08f671SMaciej Purski return; 14198a08f671SMaciej Purski 14208a08f671SMaciej Purski err_display_disable: 14218a08f671SMaciej Purski exynos_dsi_set_display_enable(dsi, false); 14228a08f671SMaciej Purski drm_panel_unprepare(dsi->panel); 14238a08f671SMaciej Purski 14248a08f671SMaciej Purski err_put_sync: 14258a08f671SMaciej Purski dsi->state &= ~DSIM_STATE_ENABLED; 14268a08f671SMaciej Purski pm_runtime_put(dsi->dev); 14277eb8f069SAndrzej Hajda } 14287eb8f069SAndrzej Hajda 14292b8376c8SGustavo Padovan static void exynos_dsi_disable(struct drm_encoder *encoder) 14307eb8f069SAndrzej Hajda { 1431cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1432f66ff55aSBoris Brezillon struct drm_bridge *iter; 1433b6595dc7SGustavo Padovan 14347eb8f069SAndrzej Hajda if (!(dsi->state & DSIM_STATE_ENABLED)) 14357eb8f069SAndrzej Hajda return; 14367eb8f069SAndrzej Hajda 14370e480f6fSHyungwon Hwang dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE; 14380e480f6fSHyungwon Hwang 14397eb8f069SAndrzej Hajda drm_panel_disable(dsi->panel); 1440f66ff55aSBoris Brezillon 1441f66ff55aSBoris Brezillon list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) { 1442f66ff55aSBoris Brezillon if (iter->funcs->disable) 1443f66ff55aSBoris Brezillon iter->funcs->disable(iter); 1444f66ff55aSBoris Brezillon } 1445f66ff55aSBoris Brezillon 1446cdfb8694SAjay Kumar exynos_dsi_set_display_enable(dsi, false); 1447cdfb8694SAjay Kumar drm_panel_unprepare(dsi->panel); 1448f66ff55aSBoris Brezillon 1449f66ff55aSBoris Brezillon list_for_each_entry(iter, &dsi->bridge_chain, chain_node) { 1450f66ff55aSBoris Brezillon if (iter->funcs->post_disable) 1451f66ff55aSBoris Brezillon iter->funcs->post_disable(iter); 1452f66ff55aSBoris Brezillon } 1453f66ff55aSBoris Brezillon 14547eb8f069SAndrzej Hajda dsi->state &= ~DSIM_STATE_ENABLED; 1455ba6e4779SInki Dae pm_runtime_put_sync(dsi->dev); 14567eb8f069SAndrzej Hajda } 14577eb8f069SAndrzej Hajda 14587eb8f069SAndrzej Hajda static enum drm_connector_status 14597eb8f069SAndrzej Hajda exynos_dsi_detect(struct drm_connector *connector, bool force) 14607eb8f069SAndrzej Hajda { 1461295e7954SAndrzej Hajda return connector->status; 14627eb8f069SAndrzej Hajda } 14637eb8f069SAndrzej Hajda 14647eb8f069SAndrzej Hajda static void exynos_dsi_connector_destroy(struct drm_connector *connector) 14657eb8f069SAndrzej Hajda { 14660ae46015SAndrzej Hajda drm_connector_unregister(connector); 14670ae46015SAndrzej Hajda drm_connector_cleanup(connector); 14680ae46015SAndrzej Hajda connector->dev = NULL; 14697eb8f069SAndrzej Hajda } 14707eb8f069SAndrzej Hajda 1471800ba2b5SVille Syrjälä static const struct drm_connector_funcs exynos_dsi_connector_funcs = { 14727eb8f069SAndrzej Hajda .detect = exynos_dsi_detect, 14737eb8f069SAndrzej Hajda .fill_modes = drm_helper_probe_single_connector_modes, 14747eb8f069SAndrzej Hajda .destroy = exynos_dsi_connector_destroy, 14754ea9526bSGustavo Padovan .reset = drm_atomic_helper_connector_reset, 14764ea9526bSGustavo Padovan .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 14774ea9526bSGustavo Padovan .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 14787eb8f069SAndrzej Hajda }; 14797eb8f069SAndrzej Hajda 14807eb8f069SAndrzej Hajda static int exynos_dsi_get_modes(struct drm_connector *connector) 14817eb8f069SAndrzej Hajda { 14827eb8f069SAndrzej Hajda struct exynos_dsi *dsi = connector_to_dsi(connector); 14837eb8f069SAndrzej Hajda 14847eb8f069SAndrzej Hajda if (dsi->panel) 148506c4a9c2SSam Ravnborg return drm_panel_get_modes(dsi->panel, connector); 14867eb8f069SAndrzej Hajda 14877eb8f069SAndrzej Hajda return 0; 14887eb8f069SAndrzej Hajda } 14897eb8f069SAndrzej Hajda 1490800ba2b5SVille Syrjälä static const struct drm_connector_helper_funcs exynos_dsi_connector_helper_funcs = { 14917eb8f069SAndrzej Hajda .get_modes = exynos_dsi_get_modes, 14927eb8f069SAndrzej Hajda }; 14937eb8f069SAndrzej Hajda 14942b8376c8SGustavo Padovan static int exynos_dsi_create_connector(struct drm_encoder *encoder) 14957eb8f069SAndrzej Hajda { 14962b8376c8SGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 14977eb8f069SAndrzej Hajda struct drm_connector *connector = &dsi->connector; 1498deee3284SAndrzej Hajda struct drm_device *drm = encoder->dev; 14997eb8f069SAndrzej Hajda int ret; 15007eb8f069SAndrzej Hajda 15017eb8f069SAndrzej Hajda connector->polled = DRM_CONNECTOR_POLL_HPD; 15027eb8f069SAndrzej Hajda 1503deee3284SAndrzej Hajda ret = drm_connector_init(drm, connector, &exynos_dsi_connector_funcs, 15047eb8f069SAndrzej Hajda DRM_MODE_CONNECTOR_DSI); 15057eb8f069SAndrzej Hajda if (ret) { 15066f83d208SInki Dae DRM_DEV_ERROR(dsi->dev, 15076f83d208SInki Dae "Failed to initialize connector with drm\n"); 15087eb8f069SAndrzej Hajda return ret; 15097eb8f069SAndrzej Hajda } 15107eb8f069SAndrzej Hajda 1511295e7954SAndrzej Hajda connector->status = connector_status_disconnected; 15127eb8f069SAndrzej Hajda drm_connector_helper_add(connector, &exynos_dsi_connector_helper_funcs); 1513cde4c44dSDaniel Vetter drm_connector_attach_encoder(connector, encoder); 1514deee3284SAndrzej Hajda if (!drm->registered) 1515deee3284SAndrzej Hajda return 0; 15167eb8f069SAndrzej Hajda 1517deee3284SAndrzej Hajda connector->funcs->reset(connector); 1518deee3284SAndrzej Hajda drm_connector_register(connector); 15197eb8f069SAndrzej Hajda return 0; 15207eb8f069SAndrzej Hajda } 15217eb8f069SAndrzej Hajda 1522800ba2b5SVille Syrjälä static const struct drm_encoder_helper_funcs exynos_dsi_encoder_helper_funcs = { 1523b6595dc7SGustavo Padovan .enable = exynos_dsi_enable, 1524b6595dc7SGustavo Padovan .disable = exynos_dsi_disable, 15257eb8f069SAndrzej Hajda }; 15267eb8f069SAndrzej Hajda 1527bd024b86SSjoerd Simons MODULE_DEVICE_TABLE(of, exynos_dsi_of_match); 15287eb8f069SAndrzej Hajda 1529295e7954SAndrzej Hajda static int exynos_dsi_host_attach(struct mipi_dsi_host *host, 1530295e7954SAndrzej Hajda struct mipi_dsi_device *device) 1531295e7954SAndrzej Hajda { 1532295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 15336afb7721SMaciej Purski struct drm_encoder *encoder = &dsi->encoder; 15346afb7721SMaciej Purski struct drm_device *drm = encoder->dev; 15356afb7721SMaciej Purski struct drm_bridge *out_bridge; 15366afb7721SMaciej Purski 15376afb7721SMaciej Purski out_bridge = of_drm_find_bridge(device->dev.of_node); 15386afb7721SMaciej Purski if (out_bridge) { 1539a25b988fSLaurent Pinchart drm_bridge_attach(encoder, out_bridge, NULL, 0); 15406afb7721SMaciej Purski dsi->out_bridge = out_bridge; 1541f66ff55aSBoris Brezillon list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain); 15426afb7721SMaciej Purski } else { 15436afb7721SMaciej Purski int ret = exynos_dsi_create_connector(encoder); 15446afb7721SMaciej Purski 15456afb7721SMaciej Purski if (ret) { 15466f83d208SInki Dae DRM_DEV_ERROR(dsi->dev, 15476f83d208SInki Dae "failed to create connector ret = %d\n", 15486f83d208SInki Dae ret); 15496afb7721SMaciej Purski drm_encoder_cleanup(encoder); 15506afb7721SMaciej Purski return ret; 15516afb7721SMaciej Purski } 15526afb7721SMaciej Purski 15536afb7721SMaciej Purski dsi->panel = of_drm_find_panel(device->dev.of_node); 155487154ff8SJoe Perches if (IS_ERR(dsi->panel)) 15558727b230SDan Carpenter dsi->panel = NULL; 155687154ff8SJoe Perches else 15576afb7721SMaciej Purski dsi->connector.status = connector_status_connected; 15586afb7721SMaciej Purski } 1559295e7954SAndrzej Hajda 1560295e7954SAndrzej Hajda /* 1561295e7954SAndrzej Hajda * This is a temporary solution and should be made by more generic way. 1562295e7954SAndrzej Hajda * 1563295e7954SAndrzej Hajda * If attached panel device is for command mode one, dsi should register 1564295e7954SAndrzej Hajda * TE interrupt handler. 1565295e7954SAndrzej Hajda */ 1566295e7954SAndrzej Hajda if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) { 1567295e7954SAndrzej Hajda int ret = exynos_dsi_register_te_irq(dsi, &device->dev); 1568295e7954SAndrzej Hajda if (ret) 1569295e7954SAndrzej Hajda return ret; 1570295e7954SAndrzej Hajda } 1571295e7954SAndrzej Hajda 1572295e7954SAndrzej Hajda mutex_lock(&drm->mode_config.mutex); 1573295e7954SAndrzej Hajda 1574295e7954SAndrzej Hajda dsi->lanes = device->lanes; 1575295e7954SAndrzej Hajda dsi->format = device->format; 1576295e7954SAndrzej Hajda dsi->mode_flags = device->mode_flags; 1577c038f538SAndrzej Hajda exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode = 1578c038f538SAndrzej Hajda !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO); 1579295e7954SAndrzej Hajda 1580295e7954SAndrzej Hajda mutex_unlock(&drm->mode_config.mutex); 1581295e7954SAndrzej Hajda 1582295e7954SAndrzej Hajda if (drm->mode_config.poll_enabled) 1583295e7954SAndrzej Hajda drm_kms_helper_hotplug_event(drm); 1584295e7954SAndrzej Hajda 1585295e7954SAndrzej Hajda return 0; 1586295e7954SAndrzej Hajda } 1587295e7954SAndrzej Hajda 1588295e7954SAndrzej Hajda static int exynos_dsi_host_detach(struct mipi_dsi_host *host, 1589295e7954SAndrzej Hajda struct mipi_dsi_device *device) 1590295e7954SAndrzej Hajda { 1591295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 15926afb7721SMaciej Purski struct drm_device *drm = dsi->encoder.dev; 1593295e7954SAndrzej Hajda 1594295e7954SAndrzej Hajda if (dsi->panel) { 15956afb7721SMaciej Purski mutex_lock(&drm->mode_config.mutex); 1596295e7954SAndrzej Hajda exynos_dsi_disable(&dsi->encoder); 1597295e7954SAndrzej Hajda dsi->panel = NULL; 1598295e7954SAndrzej Hajda dsi->connector.status = connector_status_disconnected; 1599295e7954SAndrzej Hajda mutex_unlock(&drm->mode_config.mutex); 16006afb7721SMaciej Purski } else { 16016afb7721SMaciej Purski if (dsi->out_bridge->funcs->detach) 16026afb7721SMaciej Purski dsi->out_bridge->funcs->detach(dsi->out_bridge); 16036afb7721SMaciej Purski dsi->out_bridge = NULL; 160405193dc3SBoris Brezillon INIT_LIST_HEAD(&dsi->bridge_chain); 16056afb7721SMaciej Purski } 1606295e7954SAndrzej Hajda 1607295e7954SAndrzej Hajda if (drm->mode_config.poll_enabled) 1608295e7954SAndrzej Hajda drm_kms_helper_hotplug_event(drm); 1609295e7954SAndrzej Hajda 1610295e7954SAndrzej Hajda exynos_dsi_unregister_te_irq(dsi); 1611295e7954SAndrzej Hajda 1612295e7954SAndrzej Hajda return 0; 1613295e7954SAndrzej Hajda } 1614295e7954SAndrzej Hajda 1615295e7954SAndrzej Hajda static ssize_t exynos_dsi_host_transfer(struct mipi_dsi_host *host, 1616295e7954SAndrzej Hajda const struct mipi_dsi_msg *msg) 1617295e7954SAndrzej Hajda { 1618295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 1619295e7954SAndrzej Hajda struct exynos_dsi_transfer xfer; 1620295e7954SAndrzej Hajda int ret; 1621295e7954SAndrzej Hajda 1622295e7954SAndrzej Hajda if (!(dsi->state & DSIM_STATE_ENABLED)) 1623295e7954SAndrzej Hajda return -EINVAL; 1624295e7954SAndrzej Hajda 1625295e7954SAndrzej Hajda if (!(dsi->state & DSIM_STATE_INITIALIZED)) { 1626295e7954SAndrzej Hajda ret = exynos_dsi_init(dsi); 1627295e7954SAndrzej Hajda if (ret) 1628295e7954SAndrzej Hajda return ret; 1629295e7954SAndrzej Hajda dsi->state |= DSIM_STATE_INITIALIZED; 1630295e7954SAndrzej Hajda } 1631295e7954SAndrzej Hajda 1632295e7954SAndrzej Hajda ret = mipi_dsi_create_packet(&xfer.packet, msg); 1633295e7954SAndrzej Hajda if (ret < 0) 1634295e7954SAndrzej Hajda return ret; 1635295e7954SAndrzej Hajda 1636295e7954SAndrzej Hajda xfer.rx_len = msg->rx_len; 1637295e7954SAndrzej Hajda xfer.rx_payload = msg->rx_buf; 1638295e7954SAndrzej Hajda xfer.flags = msg->flags; 1639295e7954SAndrzej Hajda 1640295e7954SAndrzej Hajda ret = exynos_dsi_transfer(dsi, &xfer); 1641295e7954SAndrzej Hajda return (ret < 0) ? ret : xfer.rx_done; 1642295e7954SAndrzej Hajda } 1643295e7954SAndrzej Hajda 1644295e7954SAndrzej Hajda static const struct mipi_dsi_host_ops exynos_dsi_ops = { 1645295e7954SAndrzej Hajda .attach = exynos_dsi_host_attach, 1646295e7954SAndrzej Hajda .detach = exynos_dsi_host_detach, 1647295e7954SAndrzej Hajda .transfer = exynos_dsi_host_transfer, 1648295e7954SAndrzej Hajda }; 1649295e7954SAndrzej Hajda 16507eb8f069SAndrzej Hajda static int exynos_dsi_of_read_u32(const struct device_node *np, 16517eb8f069SAndrzej Hajda const char *propname, u32 *out_value) 16527eb8f069SAndrzej Hajda { 16537eb8f069SAndrzej Hajda int ret = of_property_read_u32(np, propname, out_value); 16547eb8f069SAndrzej Hajda 16557eb8f069SAndrzej Hajda if (ret < 0) 16564bf99144SRob Herring pr_err("%pOF: failed to get '%s' property\n", np, propname); 16577eb8f069SAndrzej Hajda 16587eb8f069SAndrzej Hajda return ret; 16597eb8f069SAndrzej Hajda } 16607eb8f069SAndrzej Hajda 16617eb8f069SAndrzej Hajda enum { 16627eb8f069SAndrzej Hajda DSI_PORT_IN, 16637eb8f069SAndrzej Hajda DSI_PORT_OUT 16647eb8f069SAndrzej Hajda }; 16657eb8f069SAndrzej Hajda 16667eb8f069SAndrzej Hajda static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) 16677eb8f069SAndrzej Hajda { 16687eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 16697eb8f069SAndrzej Hajda struct device_node *node = dev->of_node; 16707eb8f069SAndrzej Hajda int ret; 16717eb8f069SAndrzej Hajda 16727eb8f069SAndrzej Hajda ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency", 16737eb8f069SAndrzej Hajda &dsi->pll_clk_rate); 16747eb8f069SAndrzej Hajda if (ret < 0) 16757eb8f069SAndrzej Hajda return ret; 16767eb8f069SAndrzej Hajda 1677f2921d8cSHoegeun Kwon ret = exynos_dsi_of_read_u32(node, "samsung,burst-clock-frequency", 16787eb8f069SAndrzej Hajda &dsi->burst_clk_rate); 16797eb8f069SAndrzej Hajda if (ret < 0) 1680f2921d8cSHoegeun Kwon return ret; 16817eb8f069SAndrzej Hajda 1682f2921d8cSHoegeun Kwon ret = exynos_dsi_of_read_u32(node, "samsung,esc-clock-frequency", 16837eb8f069SAndrzej Hajda &dsi->esc_clk_rate); 1684f5f3b9baSHyungwon Hwang if (ret < 0) 1685f2921d8cSHoegeun Kwon return ret; 1686f5f3b9baSHyungwon Hwang 16872782622eSMaciej Purski dsi->in_bridge_node = of_graph_get_remote_node(node, DSI_PORT_IN, 0); 1688f5f3b9baSHyungwon Hwang 1689f2921d8cSHoegeun Kwon return 0; 16907eb8f069SAndrzej Hajda } 16917eb8f069SAndrzej Hajda 1692f37cd5e8SInki Dae static int exynos_dsi_bind(struct device *dev, struct device *master, 1693f37cd5e8SInki Dae void *data) 1694f37cd5e8SInki Dae { 16952b8376c8SGustavo Padovan struct drm_encoder *encoder = dev_get_drvdata(dev); 16962b8376c8SGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1697f37cd5e8SInki Dae struct drm_device *drm_dev = data; 16982782622eSMaciej Purski struct drm_bridge *in_bridge; 1699f37cd5e8SInki Dae int ret; 1700f37cd5e8SInki Dae 17013e1fe32dSThomas Zimmermann drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS); 17022b8376c8SGustavo Padovan 17032b8376c8SGustavo Padovan drm_encoder_helper_add(encoder, &exynos_dsi_encoder_helper_funcs); 17042b8376c8SGustavo Padovan 17051ca582f1SAndrzej Hajda ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD); 17061ca582f1SAndrzej Hajda if (ret < 0) 17071ca582f1SAndrzej Hajda return ret; 17081ca582f1SAndrzej Hajda 17092782622eSMaciej Purski if (dsi->in_bridge_node) { 17102782622eSMaciej Purski in_bridge = of_drm_find_bridge(dsi->in_bridge_node); 17112782622eSMaciej Purski if (in_bridge) 1712a25b988fSLaurent Pinchart drm_bridge_attach(encoder, in_bridge, NULL, 0); 1713c9948920SInki Dae } 1714f5f3b9baSHyungwon Hwang 1715f37cd5e8SInki Dae return mipi_dsi_host_register(&dsi->dsi_host); 1716f37cd5e8SInki Dae } 1717f37cd5e8SInki Dae 1718f37cd5e8SInki Dae static void exynos_dsi_unbind(struct device *dev, struct device *master, 1719f37cd5e8SInki Dae void *data) 1720f37cd5e8SInki Dae { 17212b8376c8SGustavo Padovan struct drm_encoder *encoder = dev_get_drvdata(dev); 1722cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1723f37cd5e8SInki Dae 1724cf67cc9aSGustavo Padovan exynos_dsi_disable(encoder); 1725f37cd5e8SInki Dae 17260ae46015SAndrzej Hajda mipi_dsi_host_unregister(&dsi->dsi_host); 1727f37cd5e8SInki Dae } 1728f37cd5e8SInki Dae 1729f37cd5e8SInki Dae static const struct component_ops exynos_dsi_component_ops = { 1730f37cd5e8SInki Dae .bind = exynos_dsi_bind, 1731f37cd5e8SInki Dae .unbind = exynos_dsi_unbind, 1732f37cd5e8SInki Dae }; 1733f37cd5e8SInki Dae 17347eb8f069SAndrzej Hajda static int exynos_dsi_probe(struct platform_device *pdev) 17357eb8f069SAndrzej Hajda { 17362900c69cSAndrzej Hajda struct device *dev = &pdev->dev; 17377eb8f069SAndrzej Hajda struct resource *res; 17387eb8f069SAndrzej Hajda struct exynos_dsi *dsi; 17390ff03fd1SHyungwon Hwang int ret, i; 17407eb8f069SAndrzej Hajda 17412900c69cSAndrzej Hajda dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL); 17422900c69cSAndrzej Hajda if (!dsi) 17432900c69cSAndrzej Hajda return -ENOMEM; 17442900c69cSAndrzej Hajda 1745e17ddeccSYoungJun Cho /* To be checked as invalid one */ 1746e17ddeccSYoungJun Cho dsi->te_gpio = -ENOENT; 1747e17ddeccSYoungJun Cho 17487eb8f069SAndrzej Hajda init_completion(&dsi->completed); 17497eb8f069SAndrzej Hajda spin_lock_init(&dsi->transfer_lock); 17507eb8f069SAndrzej Hajda INIT_LIST_HEAD(&dsi->transfer_list); 175105193dc3SBoris Brezillon INIT_LIST_HEAD(&dsi->bridge_chain); 17527eb8f069SAndrzej Hajda 17537eb8f069SAndrzej Hajda dsi->dsi_host.ops = &exynos_dsi_ops; 1754e2d2a1e0SAndrzej Hajda dsi->dsi_host.dev = dev; 17557eb8f069SAndrzej Hajda 1756e2d2a1e0SAndrzej Hajda dsi->dev = dev; 17572154ac92SMarek Szyprowski dsi->driver_data = of_device_get_match_data(dev); 17587eb8f069SAndrzej Hajda 17597eb8f069SAndrzej Hajda dsi->supplies[0].supply = "vddcore"; 17607eb8f069SAndrzej Hajda dsi->supplies[1].supply = "vddio"; 1761e2d2a1e0SAndrzej Hajda ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies), 17627eb8f069SAndrzej Hajda dsi->supplies); 176373bb394cSKrzysztof Kozlowski if (ret) 176473bb394cSKrzysztof Kozlowski return dev_err_probe(dev, ret, "failed to get regulators\n"); 17657eb8f069SAndrzej Hajda 1766a86854d0SKees Cook dsi->clks = devm_kcalloc(dev, 1767a86854d0SKees Cook dsi->driver_data->num_clks, sizeof(*dsi->clks), 17680ff03fd1SHyungwon Hwang GFP_KERNEL); 1769e6f988a4SHyungwon Hwang if (!dsi->clks) 1770e6f988a4SHyungwon Hwang return -ENOMEM; 1771e6f988a4SHyungwon Hwang 17720ff03fd1SHyungwon Hwang for (i = 0; i < dsi->driver_data->num_clks; i++) { 17730ff03fd1SHyungwon Hwang dsi->clks[i] = devm_clk_get(dev, clk_names[i]); 17740ff03fd1SHyungwon Hwang if (IS_ERR(dsi->clks[i])) { 17750ff03fd1SHyungwon Hwang if (strcmp(clk_names[i], "sclk_mipi") == 0) { 1776c0fd99d6SMarek Szyprowski dsi->clks[i] = devm_clk_get(dev, 1777c0fd99d6SMarek Szyprowski OLD_SCLK_MIPI_CLK_NAME); 1778c0fd99d6SMarek Szyprowski if (!IS_ERR(dsi->clks[i])) 17790ff03fd1SHyungwon Hwang continue; 17807eb8f069SAndrzej Hajda } 17817eb8f069SAndrzej Hajda 17820ff03fd1SHyungwon Hwang dev_info(dev, "failed to get the clock: %s\n", 17830ff03fd1SHyungwon Hwang clk_names[i]); 17840ff03fd1SHyungwon Hwang return PTR_ERR(dsi->clks[i]); 17850ff03fd1SHyungwon Hwang } 17867eb8f069SAndrzej Hajda } 17877eb8f069SAndrzej Hajda 17887eb8f069SAndrzej Hajda res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1789e2d2a1e0SAndrzej Hajda dsi->reg_base = devm_ioremap_resource(dev, res); 1790293d3f6aSJingoo Han if (IS_ERR(dsi->reg_base)) { 1791e2d2a1e0SAndrzej Hajda dev_err(dev, "failed to remap io region\n"); 179286650408SAndrzej Hajda return PTR_ERR(dsi->reg_base); 17937eb8f069SAndrzej Hajda } 17947eb8f069SAndrzej Hajda 1795e2d2a1e0SAndrzej Hajda dsi->phy = devm_phy_get(dev, "dsim"); 17967eb8f069SAndrzej Hajda if (IS_ERR(dsi->phy)) { 1797e2d2a1e0SAndrzej Hajda dev_info(dev, "failed to get dsim phy\n"); 179886650408SAndrzej Hajda return PTR_ERR(dsi->phy); 17997eb8f069SAndrzej Hajda } 18007eb8f069SAndrzej Hajda 18017eb8f069SAndrzej Hajda dsi->irq = platform_get_irq(pdev, 0); 1802fdd79b0dSMarkus Elfring if (dsi->irq < 0) 180386650408SAndrzej Hajda return dsi->irq; 18047eb8f069SAndrzej Hajda 18057eb8f069SAndrzej Hajda irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN); 1806e2d2a1e0SAndrzej Hajda ret = devm_request_threaded_irq(dev, dsi->irq, NULL, 18077eb8f069SAndrzej Hajda exynos_dsi_irq, IRQF_ONESHOT, 1808e2d2a1e0SAndrzej Hajda dev_name(dev), dsi); 18097eb8f069SAndrzej Hajda if (ret) { 1810e2d2a1e0SAndrzej Hajda dev_err(dev, "failed to request dsi irq\n"); 181186650408SAndrzej Hajda return ret; 18127eb8f069SAndrzej Hajda } 18137eb8f069SAndrzej Hajda 1814547a7348SChristophe JAILLET ret = exynos_dsi_parse_dt(dsi); 1815547a7348SChristophe JAILLET if (ret) 1816547a7348SChristophe JAILLET return ret; 1817547a7348SChristophe JAILLET 1818cf67cc9aSGustavo Padovan platform_set_drvdata(pdev, &dsi->encoder); 18197eb8f069SAndrzej Hajda 1820ba6e4779SInki Dae pm_runtime_enable(dev); 1821ba6e4779SInki Dae 1822547a7348SChristophe JAILLET ret = component_add(dev, &exynos_dsi_component_ops); 1823547a7348SChristophe JAILLET if (ret) 1824547a7348SChristophe JAILLET goto err_disable_runtime; 1825547a7348SChristophe JAILLET 1826547a7348SChristophe JAILLET return 0; 1827547a7348SChristophe JAILLET 1828547a7348SChristophe JAILLET err_disable_runtime: 1829547a7348SChristophe JAILLET pm_runtime_disable(dev); 1830547a7348SChristophe JAILLET of_node_put(dsi->in_bridge_node); 1831547a7348SChristophe JAILLET 1832547a7348SChristophe JAILLET return ret; 18337eb8f069SAndrzej Hajda } 18347eb8f069SAndrzej Hajda 18357eb8f069SAndrzej Hajda static int exynos_dsi_remove(struct platform_device *pdev) 18367eb8f069SAndrzej Hajda { 183770505c2eSHoegeun Kwon struct exynos_dsi *dsi = platform_get_drvdata(pdev); 183870505c2eSHoegeun Kwon 18392782622eSMaciej Purski of_node_put(dsi->in_bridge_node); 184070505c2eSHoegeun Kwon 1841ba6e4779SInki Dae pm_runtime_disable(&pdev->dev); 1842ba6e4779SInki Dae 1843df5225bcSInki Dae component_del(&pdev->dev, &exynos_dsi_component_ops); 1844df5225bcSInki Dae 18457eb8f069SAndrzej Hajda return 0; 18467eb8f069SAndrzej Hajda } 18477eb8f069SAndrzej Hajda 1848010848a7SArnd Bergmann static int __maybe_unused exynos_dsi_suspend(struct device *dev) 1849ba6e4779SInki Dae { 1850ba6e4779SInki Dae struct drm_encoder *encoder = dev_get_drvdata(dev); 1851ba6e4779SInki Dae struct exynos_dsi *dsi = encoder_to_dsi(encoder); 18522154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1853ba6e4779SInki Dae int ret, i; 1854ba6e4779SInki Dae 1855ba6e4779SInki Dae usleep_range(10000, 20000); 1856ba6e4779SInki Dae 1857ba6e4779SInki Dae if (dsi->state & DSIM_STATE_INITIALIZED) { 1858ba6e4779SInki Dae dsi->state &= ~DSIM_STATE_INITIALIZED; 1859ba6e4779SInki Dae 1860ba6e4779SInki Dae exynos_dsi_disable_clock(dsi); 1861ba6e4779SInki Dae 1862ba6e4779SInki Dae exynos_dsi_disable_irq(dsi); 1863ba6e4779SInki Dae } 1864ba6e4779SInki Dae 1865ba6e4779SInki Dae dsi->state &= ~DSIM_STATE_CMD_LPM; 1866ba6e4779SInki Dae 1867ba6e4779SInki Dae phy_power_off(dsi->phy); 1868ba6e4779SInki Dae 1869ba6e4779SInki Dae for (i = driver_data->num_clks - 1; i > -1; i--) 1870ba6e4779SInki Dae clk_disable_unprepare(dsi->clks[i]); 1871ba6e4779SInki Dae 1872ba6e4779SInki Dae ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1873ba6e4779SInki Dae if (ret < 0) 1874ba6e4779SInki Dae dev_err(dsi->dev, "cannot disable regulators %d\n", ret); 1875ba6e4779SInki Dae 1876ba6e4779SInki Dae return 0; 1877ba6e4779SInki Dae } 1878ba6e4779SInki Dae 1879010848a7SArnd Bergmann static int __maybe_unused exynos_dsi_resume(struct device *dev) 1880ba6e4779SInki Dae { 1881ba6e4779SInki Dae struct drm_encoder *encoder = dev_get_drvdata(dev); 1882ba6e4779SInki Dae struct exynos_dsi *dsi = encoder_to_dsi(encoder); 18832154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1884ba6e4779SInki Dae int ret, i; 1885ba6e4779SInki Dae 1886ba6e4779SInki Dae ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1887ba6e4779SInki Dae if (ret < 0) { 1888ba6e4779SInki Dae dev_err(dsi->dev, "cannot enable regulators %d\n", ret); 1889ba6e4779SInki Dae return ret; 1890ba6e4779SInki Dae } 1891ba6e4779SInki Dae 1892ba6e4779SInki Dae for (i = 0; i < driver_data->num_clks; i++) { 1893ba6e4779SInki Dae ret = clk_prepare_enable(dsi->clks[i]); 1894ba6e4779SInki Dae if (ret < 0) 1895ba6e4779SInki Dae goto err_clk; 1896ba6e4779SInki Dae } 1897ba6e4779SInki Dae 1898ba6e4779SInki Dae ret = phy_power_on(dsi->phy); 1899ba6e4779SInki Dae if (ret < 0) { 1900ba6e4779SInki Dae dev_err(dsi->dev, "cannot enable phy %d\n", ret); 1901ba6e4779SInki Dae goto err_clk; 1902ba6e4779SInki Dae } 1903ba6e4779SInki Dae 1904ba6e4779SInki Dae return 0; 1905ba6e4779SInki Dae 1906ba6e4779SInki Dae err_clk: 1907ba6e4779SInki Dae while (--i > -1) 1908ba6e4779SInki Dae clk_disable_unprepare(dsi->clks[i]); 1909ba6e4779SInki Dae regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1910ba6e4779SInki Dae 1911ba6e4779SInki Dae return ret; 1912ba6e4779SInki Dae } 1913ba6e4779SInki Dae 1914ba6e4779SInki Dae static const struct dev_pm_ops exynos_dsi_pm_ops = { 1915ba6e4779SInki Dae SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL) 19167e915746SMarek Szyprowski SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 19177e915746SMarek Szyprowski pm_runtime_force_resume) 1918ba6e4779SInki Dae }; 1919ba6e4779SInki Dae 19207eb8f069SAndrzej Hajda struct platform_driver dsi_driver = { 19217eb8f069SAndrzej Hajda .probe = exynos_dsi_probe, 19227eb8f069SAndrzej Hajda .remove = exynos_dsi_remove, 19237eb8f069SAndrzej Hajda .driver = { 19247eb8f069SAndrzej Hajda .name = "exynos-dsi", 19257eb8f069SAndrzej Hajda .owner = THIS_MODULE, 1926ba6e4779SInki Dae .pm = &exynos_dsi_pm_ops, 19277eb8f069SAndrzej Hajda .of_match_table = exynos_dsi_of_match, 19287eb8f069SAndrzej Hajda }, 19297eb8f069SAndrzej Hajda }; 19307eb8f069SAndrzej Hajda 19317eb8f069SAndrzej Hajda MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>"); 19327eb8f069SAndrzej Hajda MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>"); 19337eb8f069SAndrzej Hajda MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master"); 19347eb8f069SAndrzej Hajda MODULE_LICENSE("GPL v2"); 1935