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> 332bda34d7SSam Ravnborg 34e17ddeccSYoungJun Cho #include "exynos_drm_crtc.h" 357eb8f069SAndrzej Hajda #include "exynos_drm_drv.h" 367eb8f069SAndrzej Hajda 377eb8f069SAndrzej Hajda /* returns true iff both arguments logically differs */ 387eb8f069SAndrzej Hajda #define NEQV(a, b) (!(a) ^ !(b)) 397eb8f069SAndrzej Hajda 407eb8f069SAndrzej Hajda /* DSIM_STATUS */ 417eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0) 427eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CLK (1 << 8) 437eb8f069SAndrzej Hajda #define DSIM_TX_READY_HS_CLK (1 << 10) 447eb8f069SAndrzej Hajda #define DSIM_PLL_STABLE (1 << 31) 457eb8f069SAndrzej Hajda 467eb8f069SAndrzej Hajda /* DSIM_SWRST */ 477eb8f069SAndrzej Hajda #define DSIM_FUNCRST (1 << 16) 487eb8f069SAndrzej Hajda #define DSIM_SWRST (1 << 0) 497eb8f069SAndrzej Hajda 507eb8f069SAndrzej Hajda /* DSIM_TIMEOUT */ 517eb8f069SAndrzej Hajda #define DSIM_LPDR_TIMEOUT(x) ((x) << 0) 527eb8f069SAndrzej Hajda #define DSIM_BTA_TIMEOUT(x) ((x) << 16) 537eb8f069SAndrzej Hajda 547eb8f069SAndrzej Hajda /* DSIM_CLKCTRL */ 557eb8f069SAndrzej Hajda #define DSIM_ESC_PRESCALER(x) (((x) & 0xffff) << 0) 567eb8f069SAndrzej Hajda #define DSIM_ESC_PRESCALER_MASK (0xffff << 0) 577eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_CLK (1 << 19) 587eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_DATA(x) (((x) & 0xf) << 20) 597eb8f069SAndrzej Hajda #define DSIM_LANE_ESC_CLK_EN_DATA_MASK (0xf << 20) 607eb8f069SAndrzej Hajda #define DSIM_BYTE_CLKEN (1 << 24) 617eb8f069SAndrzej Hajda #define DSIM_BYTE_CLK_SRC(x) (((x) & 0x3) << 25) 627eb8f069SAndrzej Hajda #define DSIM_BYTE_CLK_SRC_MASK (0x3 << 25) 637eb8f069SAndrzej Hajda #define DSIM_PLL_BYPASS (1 << 27) 647eb8f069SAndrzej Hajda #define DSIM_ESC_CLKEN (1 << 28) 657eb8f069SAndrzej Hajda #define DSIM_TX_REQUEST_HSCLK (1 << 31) 667eb8f069SAndrzej Hajda 677eb8f069SAndrzej Hajda /* DSIM_CONFIG */ 687eb8f069SAndrzej Hajda #define DSIM_LANE_EN_CLK (1 << 0) 697eb8f069SAndrzej Hajda #define DSIM_LANE_EN(x) (((x) & 0xf) << 1) 707eb8f069SAndrzej Hajda #define DSIM_NUM_OF_DATA_LANE(x) (((x) & 0x3) << 5) 717eb8f069SAndrzej Hajda #define DSIM_SUB_PIX_FORMAT(x) (((x) & 0x7) << 8) 727eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_MASK (0x7 << 12) 737eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB888 (0x7 << 12) 747eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB666 (0x6 << 12) 757eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB666_P (0x5 << 12) 767eb8f069SAndrzej Hajda #define DSIM_MAIN_PIX_FORMAT_RGB565 (0x4 << 12) 777eb8f069SAndrzej Hajda #define DSIM_SUB_VC (((x) & 0x3) << 16) 787eb8f069SAndrzej Hajda #define DSIM_MAIN_VC (((x) & 0x3) << 18) 797eb8f069SAndrzej Hajda #define DSIM_HSA_MODE (1 << 20) 807eb8f069SAndrzej Hajda #define DSIM_HBP_MODE (1 << 21) 817eb8f069SAndrzej Hajda #define DSIM_HFP_MODE (1 << 22) 827eb8f069SAndrzej Hajda #define DSIM_HSE_MODE (1 << 23) 837eb8f069SAndrzej Hajda #define DSIM_AUTO_MODE (1 << 24) 847eb8f069SAndrzej Hajda #define DSIM_VIDEO_MODE (1 << 25) 857eb8f069SAndrzej Hajda #define DSIM_BURST_MODE (1 << 26) 867eb8f069SAndrzej Hajda #define DSIM_SYNC_INFORM (1 << 27) 877eb8f069SAndrzej Hajda #define DSIM_EOT_DISABLE (1 << 28) 887eb8f069SAndrzej Hajda #define DSIM_MFLUSH_VS (1 << 29) 896bdc92eeSKrzysztof Kozlowski /* This flag is valid only for exynos3250/3472/5260/5430 */ 9078d3a8c6SInki Dae #define DSIM_CLKLANE_STOP (1 << 30) 917eb8f069SAndrzej Hajda 927eb8f069SAndrzej Hajda /* DSIM_ESCMODE */ 937eb8f069SAndrzej Hajda #define DSIM_TX_TRIGGER_RST (1 << 4) 947eb8f069SAndrzej Hajda #define DSIM_TX_LPDT_LP (1 << 6) 957eb8f069SAndrzej Hajda #define DSIM_CMD_LPDT_LP (1 << 7) 967eb8f069SAndrzej Hajda #define DSIM_FORCE_BTA (1 << 16) 977eb8f069SAndrzej Hajda #define DSIM_FORCE_STOP_STATE (1 << 20) 987eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CNT(x) (((x) & 0x7ff) << 21) 997eb8f069SAndrzej Hajda #define DSIM_STOP_STATE_CNT_MASK (0x7ff << 21) 1007eb8f069SAndrzej Hajda 1017eb8f069SAndrzej Hajda /* DSIM_MDRESOL */ 1027eb8f069SAndrzej Hajda #define DSIM_MAIN_STAND_BY (1 << 31) 103d668e8bfSHyungwon Hwang #define DSIM_MAIN_VRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 16) 104d668e8bfSHyungwon Hwang #define DSIM_MAIN_HRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 0) 1057eb8f069SAndrzej Hajda 1067eb8f069SAndrzej Hajda /* DSIM_MVPORCH */ 1077eb8f069SAndrzej Hajda #define DSIM_CMD_ALLOW(x) ((x) << 28) 1087eb8f069SAndrzej Hajda #define DSIM_STABLE_VFP(x) ((x) << 16) 1097eb8f069SAndrzej Hajda #define DSIM_MAIN_VBP(x) ((x) << 0) 1107eb8f069SAndrzej Hajda #define DSIM_CMD_ALLOW_MASK (0xf << 28) 1117eb8f069SAndrzej Hajda #define DSIM_STABLE_VFP_MASK (0x7ff << 16) 1127eb8f069SAndrzej Hajda #define DSIM_MAIN_VBP_MASK (0x7ff << 0) 1137eb8f069SAndrzej Hajda 1147eb8f069SAndrzej Hajda /* DSIM_MHPORCH */ 1157eb8f069SAndrzej Hajda #define DSIM_MAIN_HFP(x) ((x) << 16) 1167eb8f069SAndrzej Hajda #define DSIM_MAIN_HBP(x) ((x) << 0) 1177eb8f069SAndrzej Hajda #define DSIM_MAIN_HFP_MASK ((0xffff) << 16) 1187eb8f069SAndrzej Hajda #define DSIM_MAIN_HBP_MASK ((0xffff) << 0) 1197eb8f069SAndrzej Hajda 1207eb8f069SAndrzej Hajda /* DSIM_MSYNC */ 1217eb8f069SAndrzej Hajda #define DSIM_MAIN_VSA(x) ((x) << 22) 1227eb8f069SAndrzej Hajda #define DSIM_MAIN_HSA(x) ((x) << 0) 1237eb8f069SAndrzej Hajda #define DSIM_MAIN_VSA_MASK ((0x3ff) << 22) 1247eb8f069SAndrzej Hajda #define DSIM_MAIN_HSA_MASK ((0xffff) << 0) 1257eb8f069SAndrzej Hajda 1267eb8f069SAndrzej Hajda /* DSIM_SDRESOL */ 1277eb8f069SAndrzej Hajda #define DSIM_SUB_STANDY(x) ((x) << 31) 1287eb8f069SAndrzej Hajda #define DSIM_SUB_VRESOL(x) ((x) << 16) 1297eb8f069SAndrzej Hajda #define DSIM_SUB_HRESOL(x) ((x) << 0) 1307eb8f069SAndrzej Hajda #define DSIM_SUB_STANDY_MASK ((0x1) << 31) 1317eb8f069SAndrzej Hajda #define DSIM_SUB_VRESOL_MASK ((0x7ff) << 16) 1327eb8f069SAndrzej Hajda #define DSIM_SUB_HRESOL_MASK ((0x7ff) << 0) 1337eb8f069SAndrzej Hajda 1347eb8f069SAndrzej Hajda /* DSIM_INTSRC */ 1357eb8f069SAndrzej Hajda #define DSIM_INT_PLL_STABLE (1 << 31) 1367eb8f069SAndrzej Hajda #define DSIM_INT_SW_RST_RELEASE (1 << 30) 1377eb8f069SAndrzej Hajda #define DSIM_INT_SFR_FIFO_EMPTY (1 << 29) 138e6f988a4SHyungwon Hwang #define DSIM_INT_SFR_HDR_FIFO_EMPTY (1 << 28) 1397eb8f069SAndrzej Hajda #define DSIM_INT_BTA (1 << 25) 1407eb8f069SAndrzej Hajda #define DSIM_INT_FRAME_DONE (1 << 24) 1417eb8f069SAndrzej Hajda #define DSIM_INT_RX_TIMEOUT (1 << 21) 1427eb8f069SAndrzej Hajda #define DSIM_INT_BTA_TIMEOUT (1 << 20) 1437eb8f069SAndrzej Hajda #define DSIM_INT_RX_DONE (1 << 18) 1447eb8f069SAndrzej Hajda #define DSIM_INT_RX_TE (1 << 17) 1457eb8f069SAndrzej Hajda #define DSIM_INT_RX_ACK (1 << 16) 1467eb8f069SAndrzej Hajda #define DSIM_INT_RX_ECC_ERR (1 << 15) 1477eb8f069SAndrzej Hajda #define DSIM_INT_RX_CRC_ERR (1 << 14) 1487eb8f069SAndrzej Hajda 1497eb8f069SAndrzej Hajda /* DSIM_FIFOCTRL */ 1507eb8f069SAndrzej Hajda #define DSIM_RX_DATA_FULL (1 << 25) 1517eb8f069SAndrzej Hajda #define DSIM_RX_DATA_EMPTY (1 << 24) 1527eb8f069SAndrzej Hajda #define DSIM_SFR_HEADER_FULL (1 << 23) 1537eb8f069SAndrzej Hajda #define DSIM_SFR_HEADER_EMPTY (1 << 22) 1547eb8f069SAndrzej Hajda #define DSIM_SFR_PAYLOAD_FULL (1 << 21) 1557eb8f069SAndrzej Hajda #define DSIM_SFR_PAYLOAD_EMPTY (1 << 20) 1567eb8f069SAndrzej Hajda #define DSIM_I80_HEADER_FULL (1 << 19) 1577eb8f069SAndrzej Hajda #define DSIM_I80_HEADER_EMPTY (1 << 18) 1587eb8f069SAndrzej Hajda #define DSIM_I80_PAYLOAD_FULL (1 << 17) 1597eb8f069SAndrzej Hajda #define DSIM_I80_PAYLOAD_EMPTY (1 << 16) 1607eb8f069SAndrzej Hajda #define DSIM_SD_HEADER_FULL (1 << 15) 1617eb8f069SAndrzej Hajda #define DSIM_SD_HEADER_EMPTY (1 << 14) 1627eb8f069SAndrzej Hajda #define DSIM_SD_PAYLOAD_FULL (1 << 13) 1637eb8f069SAndrzej Hajda #define DSIM_SD_PAYLOAD_EMPTY (1 << 12) 1647eb8f069SAndrzej Hajda #define DSIM_MD_HEADER_FULL (1 << 11) 1657eb8f069SAndrzej Hajda #define DSIM_MD_HEADER_EMPTY (1 << 10) 1667eb8f069SAndrzej Hajda #define DSIM_MD_PAYLOAD_FULL (1 << 9) 1677eb8f069SAndrzej Hajda #define DSIM_MD_PAYLOAD_EMPTY (1 << 8) 1687eb8f069SAndrzej Hajda #define DSIM_RX_FIFO (1 << 4) 1697eb8f069SAndrzej Hajda #define DSIM_SFR_FIFO (1 << 3) 1707eb8f069SAndrzej Hajda #define DSIM_I80_FIFO (1 << 2) 1717eb8f069SAndrzej Hajda #define DSIM_SD_FIFO (1 << 1) 1727eb8f069SAndrzej Hajda #define DSIM_MD_FIFO (1 << 0) 1737eb8f069SAndrzej Hajda 1747eb8f069SAndrzej Hajda /* DSIM_PHYACCHR */ 1757eb8f069SAndrzej Hajda #define DSIM_AFC_EN (1 << 14) 1767eb8f069SAndrzej Hajda #define DSIM_AFC_CTL(x) (((x) & 0x7) << 5) 1777eb8f069SAndrzej Hajda 1787eb8f069SAndrzej Hajda /* DSIM_PLLCTRL */ 1797eb8f069SAndrzej Hajda #define DSIM_FREQ_BAND(x) ((x) << 24) 1807eb8f069SAndrzej Hajda #define DSIM_PLL_EN (1 << 23) 1817eb8f069SAndrzej Hajda #define DSIM_PLL_P(x) ((x) << 13) 1827eb8f069SAndrzej Hajda #define DSIM_PLL_M(x) ((x) << 4) 1837eb8f069SAndrzej Hajda #define DSIM_PLL_S(x) ((x) << 1) 1847eb8f069SAndrzej Hajda 1859a320415SYoungJun Cho /* DSIM_PHYCTRL */ 1869a320415SYoungJun Cho #define DSIM_PHYCTRL_ULPS_EXIT(x) (((x) & 0x1ff) << 0) 187e6f988a4SHyungwon Hwang #define DSIM_PHYCTRL_B_DPHYCTL_VREG_LP (1 << 30) 188e6f988a4SHyungwon Hwang #define DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP (1 << 14) 1899a320415SYoungJun Cho 1909a320415SYoungJun Cho /* DSIM_PHYTIMING */ 1919a320415SYoungJun Cho #define DSIM_PHYTIMING_LPX(x) ((x) << 8) 1929a320415SYoungJun Cho #define DSIM_PHYTIMING_HS_EXIT(x) ((x) << 0) 1939a320415SYoungJun Cho 1949a320415SYoungJun Cho /* DSIM_PHYTIMING1 */ 1959a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_PREPARE(x) ((x) << 24) 1969a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_ZERO(x) ((x) << 16) 1979a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_POST(x) ((x) << 8) 1989a320415SYoungJun Cho #define DSIM_PHYTIMING1_CLK_TRAIL(x) ((x) << 0) 1999a320415SYoungJun Cho 2009a320415SYoungJun Cho /* DSIM_PHYTIMING2 */ 2019a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_PREPARE(x) ((x) << 16) 2029a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_ZERO(x) ((x) << 8) 2039a320415SYoungJun Cho #define DSIM_PHYTIMING2_HS_TRAIL(x) ((x) << 0) 2049a320415SYoungJun Cho 2057eb8f069SAndrzej Hajda #define DSI_MAX_BUS_WIDTH 4 2067eb8f069SAndrzej Hajda #define DSI_NUM_VIRTUAL_CHANNELS 4 2077eb8f069SAndrzej Hajda #define DSI_TX_FIFO_SIZE 2048 2087eb8f069SAndrzej Hajda #define DSI_RX_FIFO_SIZE 256 2097eb8f069SAndrzej Hajda #define DSI_XFER_TIMEOUT_MS 100 2107eb8f069SAndrzej Hajda #define DSI_RX_FIFO_EMPTY 0x30800002 2117eb8f069SAndrzej Hajda 21226269af9SHyungwon Hwang #define OLD_SCLK_MIPI_CLK_NAME "pll_clk" 21326269af9SHyungwon Hwang 214e6f988a4SHyungwon Hwang static char *clk_names[5] = { "bus_clk", "sclk_mipi", 215e6f988a4SHyungwon Hwang "phyclk_mipidphy0_bitclkdiv8", "phyclk_mipidphy0_rxclkesc0", 216e6f988a4SHyungwon Hwang "sclk_rgb_vclk_to_dsim0" }; 2170ff03fd1SHyungwon Hwang 2187eb8f069SAndrzej Hajda enum exynos_dsi_transfer_type { 2197eb8f069SAndrzej Hajda EXYNOS_DSI_TX, 2207eb8f069SAndrzej Hajda EXYNOS_DSI_RX, 2217eb8f069SAndrzej Hajda }; 2227eb8f069SAndrzej Hajda 2237eb8f069SAndrzej Hajda struct exynos_dsi_transfer { 2247eb8f069SAndrzej Hajda struct list_head list; 2257eb8f069SAndrzej Hajda struct completion completed; 2267eb8f069SAndrzej Hajda int result; 2276c81e96dSAndrzej Hajda struct mipi_dsi_packet packet; 2287eb8f069SAndrzej Hajda u16 flags; 2297eb8f069SAndrzej Hajda u16 tx_done; 2307eb8f069SAndrzej Hajda 2317eb8f069SAndrzej Hajda u8 *rx_payload; 2327eb8f069SAndrzej Hajda u16 rx_len; 2337eb8f069SAndrzej Hajda u16 rx_done; 2347eb8f069SAndrzej Hajda }; 2357eb8f069SAndrzej Hajda 2367eb8f069SAndrzej Hajda #define DSIM_STATE_ENABLED BIT(0) 2377eb8f069SAndrzej Hajda #define DSIM_STATE_INITIALIZED BIT(1) 2387eb8f069SAndrzej Hajda #define DSIM_STATE_CMD_LPM BIT(2) 2390e480f6fSHyungwon Hwang #define DSIM_STATE_VIDOUT_AVAILABLE BIT(3) 2407eb8f069SAndrzej Hajda 2419a320415SYoungJun Cho struct exynos_dsi_driver_data { 242b115361eSAndrzej Hajda const unsigned int *reg_ofs; 2439a320415SYoungJun Cho unsigned int plltmr_reg; 2449a320415SYoungJun Cho unsigned int has_freqband:1; 24578d3a8c6SInki Dae unsigned int has_clklane_stop:1; 246d668e8bfSHyungwon Hwang unsigned int num_clks; 247d668e8bfSHyungwon Hwang unsigned int max_freq; 248d668e8bfSHyungwon Hwang unsigned int wait_for_reset; 249d668e8bfSHyungwon Hwang unsigned int num_bits_resol; 250b115361eSAndrzej Hajda const unsigned int *reg_values; 2519a320415SYoungJun Cho }; 2529a320415SYoungJun Cho 2537eb8f069SAndrzej Hajda struct exynos_dsi { 2542b8376c8SGustavo Padovan struct drm_encoder encoder; 2557eb8f069SAndrzej Hajda struct mipi_dsi_host dsi_host; 2567eb8f069SAndrzej Hajda struct drm_connector connector; 2577eb8f069SAndrzej Hajda struct drm_panel *panel; 2586afb7721SMaciej Purski struct drm_bridge *out_bridge; 2597eb8f069SAndrzej Hajda struct device *dev; 2607eb8f069SAndrzej Hajda 2617eb8f069SAndrzej Hajda void __iomem *reg_base; 2627eb8f069SAndrzej Hajda struct phy *phy; 2630ff03fd1SHyungwon Hwang struct clk **clks; 2647eb8f069SAndrzej Hajda struct regulator_bulk_data supplies[2]; 2657eb8f069SAndrzej Hajda int irq; 266e17ddeccSYoungJun Cho int te_gpio; 2677eb8f069SAndrzej Hajda 2687eb8f069SAndrzej Hajda u32 pll_clk_rate; 2697eb8f069SAndrzej Hajda u32 burst_clk_rate; 2707eb8f069SAndrzej Hajda u32 esc_clk_rate; 2717eb8f069SAndrzej Hajda u32 lanes; 2727eb8f069SAndrzej Hajda u32 mode_flags; 2737eb8f069SAndrzej Hajda u32 format; 2747eb8f069SAndrzej Hajda 2757eb8f069SAndrzej Hajda int state; 2767eb8f069SAndrzej Hajda struct drm_property *brightness; 2777eb8f069SAndrzej Hajda struct completion completed; 2787eb8f069SAndrzej Hajda 2797eb8f069SAndrzej Hajda spinlock_t transfer_lock; /* protects transfer_list */ 2807eb8f069SAndrzej Hajda struct list_head transfer_list; 2819a320415SYoungJun Cho 2822154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data; 2832782622eSMaciej Purski struct device_node *in_bridge_node; 2847eb8f069SAndrzej Hajda }; 2857eb8f069SAndrzej Hajda 2867eb8f069SAndrzej Hajda #define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host) 2877eb8f069SAndrzej Hajda #define connector_to_dsi(c) container_of(c, struct exynos_dsi, connector) 2887eb8f069SAndrzej Hajda 2892b8376c8SGustavo Padovan static inline struct exynos_dsi *encoder_to_dsi(struct drm_encoder *e) 2905cd5db80SAndrzej Hajda { 291cf67cc9aSGustavo Padovan return container_of(e, struct exynos_dsi, encoder); 2925cd5db80SAndrzej Hajda } 2935cd5db80SAndrzej Hajda 294d668e8bfSHyungwon Hwang enum reg_idx { 295d668e8bfSHyungwon Hwang DSIM_STATUS_REG, /* Status register */ 296d668e8bfSHyungwon Hwang DSIM_SWRST_REG, /* Software reset register */ 297d668e8bfSHyungwon Hwang DSIM_CLKCTRL_REG, /* Clock control register */ 298d668e8bfSHyungwon Hwang DSIM_TIMEOUT_REG, /* Time out register */ 299d668e8bfSHyungwon Hwang DSIM_CONFIG_REG, /* Configuration register */ 300d668e8bfSHyungwon Hwang DSIM_ESCMODE_REG, /* Escape mode register */ 301d668e8bfSHyungwon Hwang DSIM_MDRESOL_REG, 302d668e8bfSHyungwon Hwang DSIM_MVPORCH_REG, /* Main display Vporch register */ 303d668e8bfSHyungwon Hwang DSIM_MHPORCH_REG, /* Main display Hporch register */ 304d668e8bfSHyungwon Hwang DSIM_MSYNC_REG, /* Main display sync area register */ 305d668e8bfSHyungwon Hwang DSIM_INTSRC_REG, /* Interrupt source register */ 306d668e8bfSHyungwon Hwang DSIM_INTMSK_REG, /* Interrupt mask register */ 307d668e8bfSHyungwon Hwang DSIM_PKTHDR_REG, /* Packet Header FIFO register */ 308d668e8bfSHyungwon Hwang DSIM_PAYLOAD_REG, /* Payload FIFO register */ 309d668e8bfSHyungwon Hwang DSIM_RXFIFO_REG, /* Read FIFO register */ 310d668e8bfSHyungwon Hwang DSIM_FIFOCTRL_REG, /* FIFO status and control register */ 311d668e8bfSHyungwon Hwang DSIM_PLLCTRL_REG, /* PLL control register */ 312d668e8bfSHyungwon Hwang DSIM_PHYCTRL_REG, 313d668e8bfSHyungwon Hwang DSIM_PHYTIMING_REG, 314d668e8bfSHyungwon Hwang DSIM_PHYTIMING1_REG, 315d668e8bfSHyungwon Hwang DSIM_PHYTIMING2_REG, 316d668e8bfSHyungwon Hwang NUM_REGS 317d668e8bfSHyungwon Hwang }; 318bb32e408SAndrzej Hajda 319bb32e408SAndrzej Hajda static inline void exynos_dsi_write(struct exynos_dsi *dsi, enum reg_idx idx, 320bb32e408SAndrzej Hajda u32 val) 321bb32e408SAndrzej Hajda { 3226c81e96dSAndrzej Hajda 323bb32e408SAndrzej Hajda writel(val, dsi->reg_base + dsi->driver_data->reg_ofs[idx]); 324bb32e408SAndrzej Hajda } 325bb32e408SAndrzej Hajda 326bb32e408SAndrzej Hajda static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx) 327bb32e408SAndrzej Hajda { 328bb32e408SAndrzej Hajda return readl(dsi->reg_base + dsi->driver_data->reg_ofs[idx]); 329bb32e408SAndrzej Hajda } 330bb32e408SAndrzej Hajda 331b115361eSAndrzej Hajda static const unsigned int exynos_reg_ofs[] = { 332d668e8bfSHyungwon Hwang [DSIM_STATUS_REG] = 0x00, 333d668e8bfSHyungwon Hwang [DSIM_SWRST_REG] = 0x04, 334d668e8bfSHyungwon Hwang [DSIM_CLKCTRL_REG] = 0x08, 335d668e8bfSHyungwon Hwang [DSIM_TIMEOUT_REG] = 0x0c, 336d668e8bfSHyungwon Hwang [DSIM_CONFIG_REG] = 0x10, 337d668e8bfSHyungwon Hwang [DSIM_ESCMODE_REG] = 0x14, 338d668e8bfSHyungwon Hwang [DSIM_MDRESOL_REG] = 0x18, 339d668e8bfSHyungwon Hwang [DSIM_MVPORCH_REG] = 0x1c, 340d668e8bfSHyungwon Hwang [DSIM_MHPORCH_REG] = 0x20, 341d668e8bfSHyungwon Hwang [DSIM_MSYNC_REG] = 0x24, 342d668e8bfSHyungwon Hwang [DSIM_INTSRC_REG] = 0x2c, 343d668e8bfSHyungwon Hwang [DSIM_INTMSK_REG] = 0x30, 344d668e8bfSHyungwon Hwang [DSIM_PKTHDR_REG] = 0x34, 345d668e8bfSHyungwon Hwang [DSIM_PAYLOAD_REG] = 0x38, 346d668e8bfSHyungwon Hwang [DSIM_RXFIFO_REG] = 0x3c, 347d668e8bfSHyungwon Hwang [DSIM_FIFOCTRL_REG] = 0x44, 348d668e8bfSHyungwon Hwang [DSIM_PLLCTRL_REG] = 0x4c, 349d668e8bfSHyungwon Hwang [DSIM_PHYCTRL_REG] = 0x5c, 350d668e8bfSHyungwon Hwang [DSIM_PHYTIMING_REG] = 0x64, 351d668e8bfSHyungwon Hwang [DSIM_PHYTIMING1_REG] = 0x68, 352d668e8bfSHyungwon Hwang [DSIM_PHYTIMING2_REG] = 0x6c, 353d668e8bfSHyungwon Hwang }; 354d668e8bfSHyungwon Hwang 355b115361eSAndrzej Hajda static const unsigned int exynos5433_reg_ofs[] = { 356e6f988a4SHyungwon Hwang [DSIM_STATUS_REG] = 0x04, 357e6f988a4SHyungwon Hwang [DSIM_SWRST_REG] = 0x0C, 358e6f988a4SHyungwon Hwang [DSIM_CLKCTRL_REG] = 0x10, 359e6f988a4SHyungwon Hwang [DSIM_TIMEOUT_REG] = 0x14, 360e6f988a4SHyungwon Hwang [DSIM_CONFIG_REG] = 0x18, 361e6f988a4SHyungwon Hwang [DSIM_ESCMODE_REG] = 0x1C, 362e6f988a4SHyungwon Hwang [DSIM_MDRESOL_REG] = 0x20, 363e6f988a4SHyungwon Hwang [DSIM_MVPORCH_REG] = 0x24, 364e6f988a4SHyungwon Hwang [DSIM_MHPORCH_REG] = 0x28, 365e6f988a4SHyungwon Hwang [DSIM_MSYNC_REG] = 0x2C, 366e6f988a4SHyungwon Hwang [DSIM_INTSRC_REG] = 0x34, 367e6f988a4SHyungwon Hwang [DSIM_INTMSK_REG] = 0x38, 368e6f988a4SHyungwon Hwang [DSIM_PKTHDR_REG] = 0x3C, 369e6f988a4SHyungwon Hwang [DSIM_PAYLOAD_REG] = 0x40, 370e6f988a4SHyungwon Hwang [DSIM_RXFIFO_REG] = 0x44, 371e6f988a4SHyungwon Hwang [DSIM_FIFOCTRL_REG] = 0x4C, 372e6f988a4SHyungwon Hwang [DSIM_PLLCTRL_REG] = 0x94, 373e6f988a4SHyungwon Hwang [DSIM_PHYCTRL_REG] = 0xA4, 374e6f988a4SHyungwon Hwang [DSIM_PHYTIMING_REG] = 0xB4, 375e6f988a4SHyungwon Hwang [DSIM_PHYTIMING1_REG] = 0xB8, 376e6f988a4SHyungwon Hwang [DSIM_PHYTIMING2_REG] = 0xBC, 377e6f988a4SHyungwon Hwang }; 378e6f988a4SHyungwon Hwang 379d668e8bfSHyungwon Hwang enum reg_value_idx { 380d668e8bfSHyungwon Hwang RESET_TYPE, 381d668e8bfSHyungwon Hwang PLL_TIMER, 382d668e8bfSHyungwon Hwang STOP_STATE_CNT, 383d668e8bfSHyungwon Hwang PHYCTRL_ULPS_EXIT, 384d668e8bfSHyungwon Hwang PHYCTRL_VREG_LP, 385d668e8bfSHyungwon Hwang PHYCTRL_SLEW_UP, 386d668e8bfSHyungwon Hwang PHYTIMING_LPX, 387d668e8bfSHyungwon Hwang PHYTIMING_HS_EXIT, 388d668e8bfSHyungwon Hwang PHYTIMING_CLK_PREPARE, 389d668e8bfSHyungwon Hwang PHYTIMING_CLK_ZERO, 390d668e8bfSHyungwon Hwang PHYTIMING_CLK_POST, 391d668e8bfSHyungwon Hwang PHYTIMING_CLK_TRAIL, 392d668e8bfSHyungwon Hwang PHYTIMING_HS_PREPARE, 393d668e8bfSHyungwon Hwang PHYTIMING_HS_ZERO, 394d668e8bfSHyungwon Hwang PHYTIMING_HS_TRAIL 395d668e8bfSHyungwon Hwang }; 396d668e8bfSHyungwon Hwang 397b115361eSAndrzej Hajda static const unsigned int reg_values[] = { 398d668e8bfSHyungwon Hwang [RESET_TYPE] = DSIM_SWRST, 399d668e8bfSHyungwon Hwang [PLL_TIMER] = 500, 400d668e8bfSHyungwon Hwang [STOP_STATE_CNT] = 0xf, 401d668e8bfSHyungwon Hwang [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x0af), 402d668e8bfSHyungwon Hwang [PHYCTRL_VREG_LP] = 0, 403d668e8bfSHyungwon Hwang [PHYCTRL_SLEW_UP] = 0, 404d668e8bfSHyungwon Hwang [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x06), 405d668e8bfSHyungwon Hwang [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0b), 406d668e8bfSHyungwon Hwang [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x07), 407d668e8bfSHyungwon Hwang [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x27), 408d668e8bfSHyungwon Hwang [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d), 409d668e8bfSHyungwon Hwang [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x08), 410d668e8bfSHyungwon Hwang [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x09), 411d668e8bfSHyungwon Hwang [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0d), 412d668e8bfSHyungwon Hwang [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b), 413d668e8bfSHyungwon Hwang }; 414d668e8bfSHyungwon Hwang 415b115361eSAndrzej Hajda static const unsigned int exynos5422_reg_values[] = { 416fdc2e108SChanho Park [RESET_TYPE] = DSIM_SWRST, 417fdc2e108SChanho Park [PLL_TIMER] = 500, 418fdc2e108SChanho Park [STOP_STATE_CNT] = 0xf, 419fdc2e108SChanho Park [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0xaf), 420fdc2e108SChanho Park [PHYCTRL_VREG_LP] = 0, 421fdc2e108SChanho Park [PHYCTRL_SLEW_UP] = 0, 422fdc2e108SChanho Park [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x08), 423fdc2e108SChanho Park [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0d), 424fdc2e108SChanho Park [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x09), 425fdc2e108SChanho Park [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x30), 426fdc2e108SChanho Park [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0e), 427fdc2e108SChanho Park [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x0a), 428fdc2e108SChanho Park [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x0c), 429fdc2e108SChanho Park [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x11), 430fdc2e108SChanho Park [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0d), 431fdc2e108SChanho Park }; 432fdc2e108SChanho Park 433b115361eSAndrzej Hajda static const unsigned int exynos5433_reg_values[] = { 434e6f988a4SHyungwon Hwang [RESET_TYPE] = DSIM_FUNCRST, 435e6f988a4SHyungwon Hwang [PLL_TIMER] = 22200, 436e6f988a4SHyungwon Hwang [STOP_STATE_CNT] = 0xa, 437e6f988a4SHyungwon Hwang [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x190), 438e6f988a4SHyungwon Hwang [PHYCTRL_VREG_LP] = DSIM_PHYCTRL_B_DPHYCTL_VREG_LP, 439e6f988a4SHyungwon Hwang [PHYCTRL_SLEW_UP] = DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP, 440e6f988a4SHyungwon Hwang [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x07), 441e6f988a4SHyungwon Hwang [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0c), 442e6f988a4SHyungwon Hwang [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x09), 443e6f988a4SHyungwon Hwang [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x2d), 444e6f988a4SHyungwon Hwang [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0e), 445e6f988a4SHyungwon Hwang [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x09), 446e6f988a4SHyungwon Hwang [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x0b), 447e6f988a4SHyungwon Hwang [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x10), 448e6f988a4SHyungwon Hwang [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c), 449e6f988a4SHyungwon Hwang }; 450e6f988a4SHyungwon Hwang 451b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = { 452d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 453473462a1SInki Dae .plltmr_reg = 0x50, 454473462a1SInki Dae .has_freqband = 1, 455473462a1SInki Dae .has_clklane_stop = 1, 456d668e8bfSHyungwon Hwang .num_clks = 2, 457d668e8bfSHyungwon Hwang .max_freq = 1000, 458d668e8bfSHyungwon Hwang .wait_for_reset = 1, 459d668e8bfSHyungwon Hwang .num_bits_resol = 11, 460d668e8bfSHyungwon Hwang .reg_values = reg_values, 461473462a1SInki Dae }; 462473462a1SInki Dae 463b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = { 464d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 4659a320415SYoungJun Cho .plltmr_reg = 0x50, 4669a320415SYoungJun Cho .has_freqband = 1, 46778d3a8c6SInki Dae .has_clklane_stop = 1, 468d668e8bfSHyungwon Hwang .num_clks = 2, 469d668e8bfSHyungwon Hwang .max_freq = 1000, 470d668e8bfSHyungwon Hwang .wait_for_reset = 1, 471d668e8bfSHyungwon Hwang .num_bits_resol = 11, 472d668e8bfSHyungwon Hwang .reg_values = reg_values, 4739a320415SYoungJun Cho }; 4749a320415SYoungJun Cho 475b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = { 476d668e8bfSHyungwon Hwang .reg_ofs = exynos_reg_ofs, 4779a320415SYoungJun Cho .plltmr_reg = 0x58, 478d668e8bfSHyungwon Hwang .num_clks = 2, 479d668e8bfSHyungwon Hwang .max_freq = 1000, 480d668e8bfSHyungwon Hwang .wait_for_reset = 1, 481d668e8bfSHyungwon Hwang .num_bits_resol = 11, 482d668e8bfSHyungwon Hwang .reg_values = reg_values, 4839a320415SYoungJun Cho }; 4849a320415SYoungJun Cho 485b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = { 486e6f988a4SHyungwon Hwang .reg_ofs = exynos5433_reg_ofs, 487e6f988a4SHyungwon Hwang .plltmr_reg = 0xa0, 488e6f988a4SHyungwon Hwang .has_clklane_stop = 1, 489e6f988a4SHyungwon Hwang .num_clks = 5, 490e6f988a4SHyungwon Hwang .max_freq = 1500, 491e6f988a4SHyungwon Hwang .wait_for_reset = 0, 492e6f988a4SHyungwon Hwang .num_bits_resol = 12, 493e6f988a4SHyungwon Hwang .reg_values = exynos5433_reg_values, 494e6f988a4SHyungwon Hwang }; 495e6f988a4SHyungwon Hwang 496b115361eSAndrzej Hajda static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = { 497fdc2e108SChanho Park .reg_ofs = exynos5433_reg_ofs, 498fdc2e108SChanho Park .plltmr_reg = 0xa0, 499fdc2e108SChanho Park .has_clklane_stop = 1, 500fdc2e108SChanho Park .num_clks = 2, 501fdc2e108SChanho Park .max_freq = 1500, 502fdc2e108SChanho Park .wait_for_reset = 1, 503fdc2e108SChanho Park .num_bits_resol = 12, 504fdc2e108SChanho Park .reg_values = exynos5422_reg_values, 505fdc2e108SChanho Park }; 506fdc2e108SChanho Park 507b115361eSAndrzej Hajda static const struct of_device_id exynos_dsi_of_match[] = { 508473462a1SInki Dae { .compatible = "samsung,exynos3250-mipi-dsi", 509473462a1SInki Dae .data = &exynos3_dsi_driver_data }, 5109a320415SYoungJun Cho { .compatible = "samsung,exynos4210-mipi-dsi", 5119a320415SYoungJun Cho .data = &exynos4_dsi_driver_data }, 5129a320415SYoungJun Cho { .compatible = "samsung,exynos5410-mipi-dsi", 5139a320415SYoungJun Cho .data = &exynos5_dsi_driver_data }, 514fdc2e108SChanho Park { .compatible = "samsung,exynos5422-mipi-dsi", 515fdc2e108SChanho Park .data = &exynos5422_dsi_driver_data }, 516e6f988a4SHyungwon Hwang { .compatible = "samsung,exynos5433-mipi-dsi", 517e6f988a4SHyungwon Hwang .data = &exynos5433_dsi_driver_data }, 5189a320415SYoungJun Cho { } 5199a320415SYoungJun Cho }; 5209a320415SYoungJun Cho 5217eb8f069SAndrzej Hajda static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi) 5227eb8f069SAndrzej Hajda { 5237eb8f069SAndrzej Hajda if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300))) 5247eb8f069SAndrzej Hajda return; 5257eb8f069SAndrzej Hajda 5267eb8f069SAndrzej Hajda dev_err(dsi->dev, "timeout waiting for reset\n"); 5277eb8f069SAndrzej Hajda } 5287eb8f069SAndrzej Hajda 5297eb8f069SAndrzej Hajda static void exynos_dsi_reset(struct exynos_dsi *dsi) 5307eb8f069SAndrzej Hajda { 531bb32e408SAndrzej Hajda u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE]; 532ba12ac2bSHyungwon Hwang 5337eb8f069SAndrzej Hajda reinit_completion(&dsi->completed); 534bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_SWRST_REG, reset_val); 5357eb8f069SAndrzej Hajda } 5367eb8f069SAndrzej Hajda 5377eb8f069SAndrzej Hajda #ifndef MHZ 5387eb8f069SAndrzej Hajda #define MHZ (1000*1000) 5397eb8f069SAndrzej Hajda #endif 5407eb8f069SAndrzej Hajda 5417eb8f069SAndrzej Hajda static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi, 5427eb8f069SAndrzej Hajda unsigned long fin, unsigned long fout, u8 *p, u16 *m, u8 *s) 5437eb8f069SAndrzej Hajda { 5442154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 5457eb8f069SAndrzej Hajda unsigned long best_freq = 0; 5467eb8f069SAndrzej Hajda u32 min_delta = 0xffffffff; 5477eb8f069SAndrzej Hajda u8 p_min, p_max; 5487eb8f069SAndrzej Hajda u8 _p, uninitialized_var(best_p); 5497eb8f069SAndrzej Hajda u16 _m, uninitialized_var(best_m); 5507eb8f069SAndrzej Hajda u8 _s, uninitialized_var(best_s); 5517eb8f069SAndrzej Hajda 5527eb8f069SAndrzej Hajda p_min = DIV_ROUND_UP(fin, (12 * MHZ)); 5537eb8f069SAndrzej Hajda p_max = fin / (6 * MHZ); 5547eb8f069SAndrzej Hajda 5557eb8f069SAndrzej Hajda for (_p = p_min; _p <= p_max; ++_p) { 5567eb8f069SAndrzej Hajda for (_s = 0; _s <= 5; ++_s) { 5577eb8f069SAndrzej Hajda u64 tmp; 5587eb8f069SAndrzej Hajda u32 delta; 5597eb8f069SAndrzej Hajda 5607eb8f069SAndrzej Hajda tmp = (u64)fout * (_p << _s); 5617eb8f069SAndrzej Hajda do_div(tmp, fin); 5627eb8f069SAndrzej Hajda _m = tmp; 5637eb8f069SAndrzej Hajda if (_m < 41 || _m > 125) 5647eb8f069SAndrzej Hajda continue; 5657eb8f069SAndrzej Hajda 5667eb8f069SAndrzej Hajda tmp = (u64)_m * fin; 5677eb8f069SAndrzej Hajda do_div(tmp, _p); 568d668e8bfSHyungwon Hwang if (tmp < 500 * MHZ || 569d668e8bfSHyungwon Hwang tmp > driver_data->max_freq * MHZ) 5707eb8f069SAndrzej Hajda continue; 5717eb8f069SAndrzej Hajda 5727eb8f069SAndrzej Hajda tmp = (u64)_m * fin; 5737eb8f069SAndrzej Hajda do_div(tmp, _p << _s); 5747eb8f069SAndrzej Hajda 5757eb8f069SAndrzej Hajda delta = abs(fout - tmp); 5767eb8f069SAndrzej Hajda if (delta < min_delta) { 5777eb8f069SAndrzej Hajda best_p = _p; 5787eb8f069SAndrzej Hajda best_m = _m; 5797eb8f069SAndrzej Hajda best_s = _s; 5807eb8f069SAndrzej Hajda min_delta = delta; 5817eb8f069SAndrzej Hajda best_freq = tmp; 5827eb8f069SAndrzej Hajda } 5837eb8f069SAndrzej Hajda } 5847eb8f069SAndrzej Hajda } 5857eb8f069SAndrzej Hajda 5867eb8f069SAndrzej Hajda if (best_freq) { 5877eb8f069SAndrzej Hajda *p = best_p; 5887eb8f069SAndrzej Hajda *m = best_m; 5897eb8f069SAndrzej Hajda *s = best_s; 5907eb8f069SAndrzej Hajda } 5917eb8f069SAndrzej Hajda 5927eb8f069SAndrzej Hajda return best_freq; 5937eb8f069SAndrzej Hajda } 5947eb8f069SAndrzej Hajda 5957eb8f069SAndrzej Hajda static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, 5967eb8f069SAndrzej Hajda unsigned long freq) 5977eb8f069SAndrzej Hajda { 5982154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 5997eb8f069SAndrzej Hajda unsigned long fin, fout; 6009a320415SYoungJun Cho int timeout; 6017eb8f069SAndrzej Hajda u8 p, s; 6027eb8f069SAndrzej Hajda u16 m; 6037eb8f069SAndrzej Hajda u32 reg; 6047eb8f069SAndrzej Hajda 60526269af9SHyungwon Hwang fin = dsi->pll_clk_rate; 6067eb8f069SAndrzej Hajda fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s); 6077eb8f069SAndrzej Hajda if (!fout) { 6087eb8f069SAndrzej Hajda dev_err(dsi->dev, 6097eb8f069SAndrzej Hajda "failed to find PLL PMS for requested frequency\n"); 6108525b5ecSYoungJun Cho return 0; 6117eb8f069SAndrzej Hajda } 6129a320415SYoungJun Cho dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s); 6139a320415SYoungJun Cho 614d668e8bfSHyungwon Hwang writel(driver_data->reg_values[PLL_TIMER], 615d668e8bfSHyungwon Hwang dsi->reg_base + driver_data->plltmr_reg); 6169a320415SYoungJun Cho 6179a320415SYoungJun Cho reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s); 6189a320415SYoungJun Cho 6199a320415SYoungJun Cho if (driver_data->has_freqband) { 6209a320415SYoungJun Cho static const unsigned long freq_bands[] = { 6219a320415SYoungJun Cho 100 * MHZ, 120 * MHZ, 160 * MHZ, 200 * MHZ, 6229a320415SYoungJun Cho 270 * MHZ, 320 * MHZ, 390 * MHZ, 450 * MHZ, 6239a320415SYoungJun Cho 510 * MHZ, 560 * MHZ, 640 * MHZ, 690 * MHZ, 6249a320415SYoungJun Cho 770 * MHZ, 870 * MHZ, 950 * MHZ, 6259a320415SYoungJun Cho }; 6269a320415SYoungJun Cho int band; 6277eb8f069SAndrzej Hajda 6287eb8f069SAndrzej Hajda for (band = 0; band < ARRAY_SIZE(freq_bands); ++band) 6297eb8f069SAndrzej Hajda if (fout < freq_bands[band]) 6307eb8f069SAndrzej Hajda break; 6317eb8f069SAndrzej Hajda 6329a320415SYoungJun Cho dev_dbg(dsi->dev, "band %d\n", band); 6337eb8f069SAndrzej Hajda 6349a320415SYoungJun Cho reg |= DSIM_FREQ_BAND(band); 6359a320415SYoungJun Cho } 6367eb8f069SAndrzej Hajda 637bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg); 6387eb8f069SAndrzej Hajda 6397eb8f069SAndrzej Hajda timeout = 1000; 6407eb8f069SAndrzej Hajda do { 6417eb8f069SAndrzej Hajda if (timeout-- == 0) { 6427eb8f069SAndrzej Hajda dev_err(dsi->dev, "PLL failed to stabilize\n"); 6438525b5ecSYoungJun Cho return 0; 6447eb8f069SAndrzej Hajda } 645bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_STATUS_REG); 6467eb8f069SAndrzej Hajda } while ((reg & DSIM_PLL_STABLE) == 0); 6477eb8f069SAndrzej Hajda 6487eb8f069SAndrzej Hajda return fout; 6497eb8f069SAndrzej Hajda } 6507eb8f069SAndrzej Hajda 6517eb8f069SAndrzej Hajda static int exynos_dsi_enable_clock(struct exynos_dsi *dsi) 6527eb8f069SAndrzej Hajda { 6537eb8f069SAndrzej Hajda unsigned long hs_clk, byte_clk, esc_clk; 6547eb8f069SAndrzej Hajda unsigned long esc_div; 6557eb8f069SAndrzej Hajda u32 reg; 6567eb8f069SAndrzej Hajda 6577eb8f069SAndrzej Hajda hs_clk = exynos_dsi_set_pll(dsi, dsi->burst_clk_rate); 6587eb8f069SAndrzej Hajda if (!hs_clk) { 6597eb8f069SAndrzej Hajda dev_err(dsi->dev, "failed to configure DSI PLL\n"); 6607eb8f069SAndrzej Hajda return -EFAULT; 6617eb8f069SAndrzej Hajda } 6627eb8f069SAndrzej Hajda 6637eb8f069SAndrzej Hajda byte_clk = hs_clk / 8; 6647eb8f069SAndrzej Hajda esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate); 6657eb8f069SAndrzej Hajda esc_clk = byte_clk / esc_div; 6667eb8f069SAndrzej Hajda 6677eb8f069SAndrzej Hajda if (esc_clk > 20 * MHZ) { 6687eb8f069SAndrzej Hajda ++esc_div; 6697eb8f069SAndrzej Hajda esc_clk = byte_clk / esc_div; 6707eb8f069SAndrzej Hajda } 6717eb8f069SAndrzej Hajda 6727eb8f069SAndrzej Hajda dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n", 6737eb8f069SAndrzej Hajda hs_clk, byte_clk, esc_clk); 6747eb8f069SAndrzej Hajda 675bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG); 6767eb8f069SAndrzej Hajda reg &= ~(DSIM_ESC_PRESCALER_MASK | DSIM_LANE_ESC_CLK_EN_CLK 6777eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_DATA_MASK | DSIM_PLL_BYPASS 6787eb8f069SAndrzej Hajda | DSIM_BYTE_CLK_SRC_MASK); 6797eb8f069SAndrzej Hajda reg |= DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN 6807eb8f069SAndrzej Hajda | DSIM_ESC_PRESCALER(esc_div) 6817eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_CLK 6827eb8f069SAndrzej Hajda | DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1) 6837eb8f069SAndrzej Hajda | DSIM_BYTE_CLK_SRC(0) 6847eb8f069SAndrzej Hajda | DSIM_TX_REQUEST_HSCLK; 685bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg); 6867eb8f069SAndrzej Hajda 6877eb8f069SAndrzej Hajda return 0; 6887eb8f069SAndrzej Hajda } 6897eb8f069SAndrzej Hajda 6909a320415SYoungJun Cho static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) 6919a320415SYoungJun Cho { 6922154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 693b115361eSAndrzej Hajda const unsigned int *reg_values = driver_data->reg_values; 6949a320415SYoungJun Cho u32 reg; 6959a320415SYoungJun Cho 6969a320415SYoungJun Cho if (driver_data->has_freqband) 6979a320415SYoungJun Cho return; 6989a320415SYoungJun Cho 6999a320415SYoungJun Cho /* B D-PHY: D-PHY Master & Slave Analog Block control */ 700d668e8bfSHyungwon Hwang reg = reg_values[PHYCTRL_ULPS_EXIT] | reg_values[PHYCTRL_VREG_LP] | 701d668e8bfSHyungwon Hwang reg_values[PHYCTRL_SLEW_UP]; 702bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYCTRL_REG, reg); 7039a320415SYoungJun Cho 7049a320415SYoungJun Cho /* 7059a320415SYoungJun Cho * T LPX: Transmitted length of any Low-Power state period 7069a320415SYoungJun Cho * T HS-EXIT: Time that the transmitter drives LP-11 following a HS 7079a320415SYoungJun Cho * burst 7089a320415SYoungJun Cho */ 709d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_LPX] | reg_values[PHYTIMING_HS_EXIT]; 710bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING_REG, reg); 7119a320415SYoungJun Cho 7129a320415SYoungJun Cho /* 7139a320415SYoungJun Cho * T CLK-PREPARE: Time that the transmitter drives the Clock Lane LP-00 7149a320415SYoungJun Cho * Line state immediately before the HS-0 Line state starting the 7159a320415SYoungJun Cho * HS transmission 7169a320415SYoungJun Cho * T CLK-ZERO: Time that the transmitter drives the HS-0 state prior to 7179a320415SYoungJun Cho * transmitting the Clock. 7189a320415SYoungJun Cho * T CLK_POST: Time that the transmitter continues to send HS clock 7199a320415SYoungJun Cho * after the last associated Data Lane has transitioned to LP Mode 7209a320415SYoungJun Cho * Interval is defined as the period from the end of T HS-TRAIL to 7219a320415SYoungJun Cho * the beginning of T CLK-TRAIL 7229a320415SYoungJun Cho * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after 7239a320415SYoungJun Cho * the last payload clock bit of a HS transmission burst 7249a320415SYoungJun Cho */ 725d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_CLK_PREPARE] | 726d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_ZERO] | 727d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_POST] | 728d668e8bfSHyungwon Hwang reg_values[PHYTIMING_CLK_TRAIL]; 729d668e8bfSHyungwon Hwang 730bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING1_REG, reg); 7319a320415SYoungJun Cho 7329a320415SYoungJun Cho /* 7339a320415SYoungJun Cho * T HS-PREPARE: Time that the transmitter drives the Data Lane LP-00 7349a320415SYoungJun Cho * Line state immediately before the HS-0 Line state starting the 7359a320415SYoungJun Cho * HS transmission 7369a320415SYoungJun Cho * T HS-ZERO: Time that the transmitter drives the HS-0 state prior to 7379a320415SYoungJun Cho * transmitting the Sync sequence. 7389a320415SYoungJun Cho * T HS-TRAIL: Time that the transmitter drives the flipped differential 7399a320415SYoungJun Cho * state after last payload data bit of a HS transmission burst 7409a320415SYoungJun Cho */ 741d668e8bfSHyungwon Hwang reg = reg_values[PHYTIMING_HS_PREPARE] | reg_values[PHYTIMING_HS_ZERO] | 742d668e8bfSHyungwon Hwang reg_values[PHYTIMING_HS_TRAIL]; 743bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PHYTIMING2_REG, reg); 7449a320415SYoungJun Cho } 7459a320415SYoungJun Cho 7467eb8f069SAndrzej Hajda static void exynos_dsi_disable_clock(struct exynos_dsi *dsi) 7477eb8f069SAndrzej Hajda { 7487eb8f069SAndrzej Hajda u32 reg; 7497eb8f069SAndrzej Hajda 750bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG); 7517eb8f069SAndrzej Hajda reg &= ~(DSIM_LANE_ESC_CLK_EN_CLK | DSIM_LANE_ESC_CLK_EN_DATA_MASK 7527eb8f069SAndrzej Hajda | DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN); 753bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg); 7547eb8f069SAndrzej Hajda 755bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_PLLCTRL_REG); 7567eb8f069SAndrzej Hajda reg &= ~DSIM_PLL_EN; 757bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg); 7587eb8f069SAndrzej Hajda } 7597eb8f069SAndrzej Hajda 760e6f988a4SHyungwon Hwang static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane) 761e6f988a4SHyungwon Hwang { 762bb32e408SAndrzej Hajda u32 reg = exynos_dsi_read(dsi, DSIM_CONFIG_REG); 763e6f988a4SHyungwon Hwang reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK | 764e6f988a4SHyungwon Hwang DSIM_LANE_EN(lane)); 765bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg); 766e6f988a4SHyungwon Hwang } 767e6f988a4SHyungwon Hwang 7687eb8f069SAndrzej Hajda static int exynos_dsi_init_link(struct exynos_dsi *dsi) 7697eb8f069SAndrzej Hajda { 7702154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 7717eb8f069SAndrzej Hajda int timeout; 7727eb8f069SAndrzej Hajda u32 reg; 7737eb8f069SAndrzej Hajda u32 lanes_mask; 7747eb8f069SAndrzej Hajda 7757eb8f069SAndrzej Hajda /* Initialize FIFO pointers */ 776bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG); 7777eb8f069SAndrzej Hajda reg &= ~0x1f; 778bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg); 7797eb8f069SAndrzej Hajda 7807eb8f069SAndrzej Hajda usleep_range(9000, 11000); 7817eb8f069SAndrzej Hajda 7827eb8f069SAndrzej Hajda reg |= 0x1f; 783bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg); 7847eb8f069SAndrzej Hajda usleep_range(9000, 11000); 7857eb8f069SAndrzej Hajda 7867eb8f069SAndrzej Hajda /* DSI configuration */ 7877eb8f069SAndrzej Hajda reg = 0; 7887eb8f069SAndrzej Hajda 7892f36e33aSYoungJun Cho /* 7902f36e33aSYoungJun Cho * The first bit of mode_flags specifies display configuration. 7912f36e33aSYoungJun Cho * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video 7922f36e33aSYoungJun Cho * mode, otherwise it will support command mode. 7932f36e33aSYoungJun Cho */ 7947eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { 7957eb8f069SAndrzej Hajda reg |= DSIM_VIDEO_MODE; 7967eb8f069SAndrzej Hajda 7972f36e33aSYoungJun Cho /* 7982f36e33aSYoungJun Cho * The user manual describes that following bits are ignored in 7992f36e33aSYoungJun Cho * command mode. 8002f36e33aSYoungJun Cho */ 8017eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH)) 8027eb8f069SAndrzej Hajda reg |= DSIM_MFLUSH_VS; 8037eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) 8047eb8f069SAndrzej Hajda reg |= DSIM_SYNC_INFORM; 8057eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) 8067eb8f069SAndrzej Hajda reg |= DSIM_BURST_MODE; 8077eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT) 8087eb8f069SAndrzej Hajda reg |= DSIM_AUTO_MODE; 8097eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE) 8107eb8f069SAndrzej Hajda reg |= DSIM_HSE_MODE; 8117eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HFP)) 8127eb8f069SAndrzej Hajda reg |= DSIM_HFP_MODE; 8137eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HBP)) 8147eb8f069SAndrzej Hajda reg |= DSIM_HBP_MODE; 8157eb8f069SAndrzej Hajda if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSA)) 8167eb8f069SAndrzej Hajda reg |= DSIM_HSA_MODE; 8177eb8f069SAndrzej Hajda } 8187eb8f069SAndrzej Hajda 8192f36e33aSYoungJun Cho if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET)) 8202f36e33aSYoungJun Cho reg |= DSIM_EOT_DISABLE; 8212f36e33aSYoungJun Cho 8227eb8f069SAndrzej Hajda switch (dsi->format) { 8237eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB888: 8247eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB888; 8257eb8f069SAndrzej Hajda break; 8267eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB666: 8277eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB666; 8287eb8f069SAndrzej Hajda break; 8297eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB666_PACKED: 8307eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB666_P; 8317eb8f069SAndrzej Hajda break; 8327eb8f069SAndrzej Hajda case MIPI_DSI_FMT_RGB565: 8337eb8f069SAndrzej Hajda reg |= DSIM_MAIN_PIX_FORMAT_RGB565; 8347eb8f069SAndrzej Hajda break; 8357eb8f069SAndrzej Hajda default: 8367eb8f069SAndrzej Hajda dev_err(dsi->dev, "invalid pixel format\n"); 8377eb8f069SAndrzej Hajda return -EINVAL; 8387eb8f069SAndrzej Hajda } 8397eb8f069SAndrzej Hajda 84078d3a8c6SInki Dae /* 84178d3a8c6SInki Dae * Use non-continuous clock mode if the periparal wants and 84278d3a8c6SInki Dae * host controller supports 84378d3a8c6SInki Dae * 84478d3a8c6SInki Dae * In non-continous clock mode, host controller will turn off 84578d3a8c6SInki Dae * the HS clock between high-speed transmissions to reduce 84678d3a8c6SInki Dae * power consumption. 84778d3a8c6SInki Dae */ 84878d3a8c6SInki Dae if (driver_data->has_clklane_stop && 84978d3a8c6SInki Dae dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) { 85078d3a8c6SInki Dae reg |= DSIM_CLKLANE_STOP; 85178d3a8c6SInki Dae } 852bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg); 853e6f988a4SHyungwon Hwang 854e6f988a4SHyungwon Hwang lanes_mask = BIT(dsi->lanes) - 1; 855e6f988a4SHyungwon Hwang exynos_dsi_enable_lane(dsi, lanes_mask); 85678d3a8c6SInki Dae 8577eb8f069SAndrzej Hajda /* Check clock and data lane state are stop state */ 8587eb8f069SAndrzej Hajda timeout = 100; 8597eb8f069SAndrzej Hajda do { 8607eb8f069SAndrzej Hajda if (timeout-- == 0) { 8617eb8f069SAndrzej Hajda dev_err(dsi->dev, "waiting for bus lanes timed out\n"); 8627eb8f069SAndrzej Hajda return -EFAULT; 8637eb8f069SAndrzej Hajda } 8647eb8f069SAndrzej Hajda 865bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_STATUS_REG); 8667eb8f069SAndrzej Hajda if ((reg & DSIM_STOP_STATE_DAT(lanes_mask)) 8677eb8f069SAndrzej Hajda != DSIM_STOP_STATE_DAT(lanes_mask)) 8687eb8f069SAndrzej Hajda continue; 8697eb8f069SAndrzej Hajda } while (!(reg & (DSIM_STOP_STATE_CLK | DSIM_TX_READY_HS_CLK))); 8707eb8f069SAndrzej Hajda 871bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 8727eb8f069SAndrzej Hajda reg &= ~DSIM_STOP_STATE_CNT_MASK; 873d668e8bfSHyungwon Hwang reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]); 874bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, reg); 8757eb8f069SAndrzej Hajda 8767eb8f069SAndrzej Hajda reg = DSIM_BTA_TIMEOUT(0xff) | DSIM_LPDR_TIMEOUT(0xffff); 877bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_TIMEOUT_REG, reg); 8787eb8f069SAndrzej Hajda 8797eb8f069SAndrzej Hajda return 0; 8807eb8f069SAndrzej Hajda } 8817eb8f069SAndrzej Hajda 8827eb8f069SAndrzej Hajda static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) 8837eb8f069SAndrzej Hajda { 884e8929999SAndrzej Hajda struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode; 885d668e8bfSHyungwon Hwang unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; 8867eb8f069SAndrzej Hajda u32 reg; 8877eb8f069SAndrzej Hajda 8887eb8f069SAndrzej Hajda if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { 8897eb8f069SAndrzej Hajda reg = DSIM_CMD_ALLOW(0xf) 890e8929999SAndrzej Hajda | DSIM_STABLE_VFP(m->vsync_start - m->vdisplay) 891e8929999SAndrzej Hajda | DSIM_MAIN_VBP(m->vtotal - m->vsync_end); 892bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MVPORCH_REG, reg); 8937eb8f069SAndrzej Hajda 894e8929999SAndrzej Hajda reg = DSIM_MAIN_HFP(m->hsync_start - m->hdisplay) 895e8929999SAndrzej Hajda | DSIM_MAIN_HBP(m->htotal - m->hsync_end); 896bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MHPORCH_REG, reg); 8977eb8f069SAndrzej Hajda 898e8929999SAndrzej Hajda reg = DSIM_MAIN_VSA(m->vsync_end - m->vsync_start) 899e8929999SAndrzej Hajda | DSIM_MAIN_HSA(m->hsync_end - m->hsync_start); 900bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MSYNC_REG, reg); 9017eb8f069SAndrzej Hajda } 902e8929999SAndrzej Hajda reg = DSIM_MAIN_HRESOL(m->hdisplay, num_bits_resol) | 903e8929999SAndrzej Hajda DSIM_MAIN_VRESOL(m->vdisplay, num_bits_resol); 9047eb8f069SAndrzej Hajda 905bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg); 9067eb8f069SAndrzej Hajda 907e8929999SAndrzej Hajda dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay); 9087eb8f069SAndrzej Hajda } 9097eb8f069SAndrzej Hajda 9107eb8f069SAndrzej Hajda static void exynos_dsi_set_display_enable(struct exynos_dsi *dsi, bool enable) 9117eb8f069SAndrzej Hajda { 9127eb8f069SAndrzej Hajda u32 reg; 9137eb8f069SAndrzej Hajda 914bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_MDRESOL_REG); 9157eb8f069SAndrzej Hajda if (enable) 9167eb8f069SAndrzej Hajda reg |= DSIM_MAIN_STAND_BY; 9177eb8f069SAndrzej Hajda else 9187eb8f069SAndrzej Hajda reg &= ~DSIM_MAIN_STAND_BY; 919bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg); 9207eb8f069SAndrzej Hajda } 9217eb8f069SAndrzej Hajda 9227eb8f069SAndrzej Hajda static int exynos_dsi_wait_for_hdr_fifo(struct exynos_dsi *dsi) 9237eb8f069SAndrzej Hajda { 9247eb8f069SAndrzej Hajda int timeout = 2000; 9257eb8f069SAndrzej Hajda 9267eb8f069SAndrzej Hajda do { 927bb32e408SAndrzej Hajda u32 reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG); 9287eb8f069SAndrzej Hajda 9297eb8f069SAndrzej Hajda if (!(reg & DSIM_SFR_HEADER_FULL)) 9307eb8f069SAndrzej Hajda return 0; 9317eb8f069SAndrzej Hajda 9327eb8f069SAndrzej Hajda if (!cond_resched()) 9337eb8f069SAndrzej Hajda usleep_range(950, 1050); 9347eb8f069SAndrzej Hajda } while (--timeout); 9357eb8f069SAndrzej Hajda 9367eb8f069SAndrzej Hajda return -ETIMEDOUT; 9377eb8f069SAndrzej Hajda } 9387eb8f069SAndrzej Hajda 9397eb8f069SAndrzej Hajda static void exynos_dsi_set_cmd_lpm(struct exynos_dsi *dsi, bool lpm) 9407eb8f069SAndrzej Hajda { 941bb32e408SAndrzej Hajda u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 9427eb8f069SAndrzej Hajda 9437eb8f069SAndrzej Hajda if (lpm) 9447eb8f069SAndrzej Hajda v |= DSIM_CMD_LPDT_LP; 9457eb8f069SAndrzej Hajda else 9467eb8f069SAndrzej Hajda v &= ~DSIM_CMD_LPDT_LP; 9477eb8f069SAndrzej Hajda 948bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v); 9497eb8f069SAndrzej Hajda } 9507eb8f069SAndrzej Hajda 9517eb8f069SAndrzej Hajda static void exynos_dsi_force_bta(struct exynos_dsi *dsi) 9527eb8f069SAndrzej Hajda { 953bb32e408SAndrzej Hajda u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG); 9547eb8f069SAndrzej Hajda v |= DSIM_FORCE_BTA; 955bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v); 9567eb8f069SAndrzej Hajda } 9577eb8f069SAndrzej Hajda 9587eb8f069SAndrzej Hajda static void exynos_dsi_send_to_fifo(struct exynos_dsi *dsi, 9597eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 9607eb8f069SAndrzej Hajda { 9617eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 9626c81e96dSAndrzej Hajda struct mipi_dsi_packet *pkt = &xfer->packet; 9636c81e96dSAndrzej Hajda const u8 *payload = pkt->payload + xfer->tx_done; 9646c81e96dSAndrzej Hajda u16 length = pkt->payload_length - xfer->tx_done; 9657eb8f069SAndrzej Hajda bool first = !xfer->tx_done; 9667eb8f069SAndrzej Hajda u32 reg; 9677eb8f069SAndrzej Hajda 9689cdf0ed2SKrzysztof Kozlowski dev_dbg(dev, "< xfer %pK: tx len %u, done %u, rx len %u, done %u\n", 9696c81e96dSAndrzej Hajda xfer, length, xfer->tx_done, xfer->rx_len, xfer->rx_done); 9707eb8f069SAndrzej Hajda 9717eb8f069SAndrzej Hajda if (length > DSI_TX_FIFO_SIZE) 9727eb8f069SAndrzej Hajda length = DSI_TX_FIFO_SIZE; 9737eb8f069SAndrzej Hajda 9747eb8f069SAndrzej Hajda xfer->tx_done += length; 9757eb8f069SAndrzej Hajda 9767eb8f069SAndrzej Hajda /* Send payload */ 9777eb8f069SAndrzej Hajda while (length >= 4) { 9786c81e96dSAndrzej Hajda reg = get_unaligned_le32(payload); 979bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg); 9807eb8f069SAndrzej Hajda payload += 4; 9817eb8f069SAndrzej Hajda length -= 4; 9827eb8f069SAndrzej Hajda } 9837eb8f069SAndrzej Hajda 9847eb8f069SAndrzej Hajda reg = 0; 9857eb8f069SAndrzej Hajda switch (length) { 9867eb8f069SAndrzej Hajda case 3: 9877eb8f069SAndrzej Hajda reg |= payload[2] << 16; 9887eb8f069SAndrzej Hajda /* Fall through */ 9897eb8f069SAndrzej Hajda case 2: 9907eb8f069SAndrzej Hajda reg |= payload[1] << 8; 9917eb8f069SAndrzej Hajda /* Fall through */ 9927eb8f069SAndrzej Hajda case 1: 9937eb8f069SAndrzej Hajda reg |= payload[0]; 994bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg); 9957eb8f069SAndrzej Hajda break; 9967eb8f069SAndrzej Hajda } 9977eb8f069SAndrzej Hajda 9987eb8f069SAndrzej Hajda /* Send packet header */ 9997eb8f069SAndrzej Hajda if (!first) 10007eb8f069SAndrzej Hajda return; 10017eb8f069SAndrzej Hajda 10026c81e96dSAndrzej Hajda reg = get_unaligned_le32(pkt->header); 10037eb8f069SAndrzej Hajda if (exynos_dsi_wait_for_hdr_fifo(dsi)) { 10047eb8f069SAndrzej Hajda dev_err(dev, "waiting for header FIFO timed out\n"); 10057eb8f069SAndrzej Hajda return; 10067eb8f069SAndrzej Hajda } 10077eb8f069SAndrzej Hajda 10087eb8f069SAndrzej Hajda if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM, 10097eb8f069SAndrzej Hajda dsi->state & DSIM_STATE_CMD_LPM)) { 10107eb8f069SAndrzej Hajda exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM); 10117eb8f069SAndrzej Hajda dsi->state ^= DSIM_STATE_CMD_LPM; 10127eb8f069SAndrzej Hajda } 10137eb8f069SAndrzej Hajda 1014bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_PKTHDR_REG, reg); 10157eb8f069SAndrzej Hajda 10167eb8f069SAndrzej Hajda if (xfer->flags & MIPI_DSI_MSG_REQ_ACK) 10177eb8f069SAndrzej Hajda exynos_dsi_force_bta(dsi); 10187eb8f069SAndrzej Hajda } 10197eb8f069SAndrzej Hajda 10207eb8f069SAndrzej Hajda static void exynos_dsi_read_from_fifo(struct exynos_dsi *dsi, 10217eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 10227eb8f069SAndrzej Hajda { 10237eb8f069SAndrzej Hajda u8 *payload = xfer->rx_payload + xfer->rx_done; 10247eb8f069SAndrzej Hajda bool first = !xfer->rx_done; 10257eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 10267eb8f069SAndrzej Hajda u16 length; 10277eb8f069SAndrzej Hajda u32 reg; 10287eb8f069SAndrzej Hajda 10297eb8f069SAndrzej Hajda if (first) { 1030bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10317eb8f069SAndrzej Hajda 10327eb8f069SAndrzej Hajda switch (reg & 0x3f) { 10337eb8f069SAndrzej Hajda case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE: 10347eb8f069SAndrzej Hajda case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE: 10357eb8f069SAndrzej Hajda if (xfer->rx_len >= 2) { 10367eb8f069SAndrzej Hajda payload[1] = reg >> 16; 10377eb8f069SAndrzej Hajda ++xfer->rx_done; 10387eb8f069SAndrzej Hajda } 10397eb8f069SAndrzej Hajda /* Fall through */ 10407eb8f069SAndrzej Hajda case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE: 10417eb8f069SAndrzej Hajda case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE: 10427eb8f069SAndrzej Hajda payload[0] = reg >> 8; 10437eb8f069SAndrzej Hajda ++xfer->rx_done; 10447eb8f069SAndrzej Hajda xfer->rx_len = xfer->rx_done; 10457eb8f069SAndrzej Hajda xfer->result = 0; 10467eb8f069SAndrzej Hajda goto clear_fifo; 10477eb8f069SAndrzej Hajda case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT: 10487eb8f069SAndrzej Hajda dev_err(dev, "DSI Error Report: 0x%04x\n", 10497eb8f069SAndrzej Hajda (reg >> 8) & 0xffff); 10507eb8f069SAndrzej Hajda xfer->result = 0; 10517eb8f069SAndrzej Hajda goto clear_fifo; 10527eb8f069SAndrzej Hajda } 10537eb8f069SAndrzej Hajda 10547eb8f069SAndrzej Hajda length = (reg >> 8) & 0xffff; 10557eb8f069SAndrzej Hajda if (length > xfer->rx_len) { 10567eb8f069SAndrzej Hajda dev_err(dev, 10577eb8f069SAndrzej Hajda "response too long (%u > %u bytes), stripping\n", 10587eb8f069SAndrzej Hajda xfer->rx_len, length); 10597eb8f069SAndrzej Hajda length = xfer->rx_len; 10607eb8f069SAndrzej Hajda } else if (length < xfer->rx_len) 10617eb8f069SAndrzej Hajda xfer->rx_len = length; 10627eb8f069SAndrzej Hajda } 10637eb8f069SAndrzej Hajda 10647eb8f069SAndrzej Hajda length = xfer->rx_len - xfer->rx_done; 10657eb8f069SAndrzej Hajda xfer->rx_done += length; 10667eb8f069SAndrzej Hajda 10677eb8f069SAndrzej Hajda /* Receive payload */ 10687eb8f069SAndrzej Hajda while (length >= 4) { 1069bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10707eb8f069SAndrzej Hajda payload[0] = (reg >> 0) & 0xff; 10717eb8f069SAndrzej Hajda payload[1] = (reg >> 8) & 0xff; 10727eb8f069SAndrzej Hajda payload[2] = (reg >> 16) & 0xff; 10737eb8f069SAndrzej Hajda payload[3] = (reg >> 24) & 0xff; 10747eb8f069SAndrzej Hajda payload += 4; 10757eb8f069SAndrzej Hajda length -= 4; 10767eb8f069SAndrzej Hajda } 10777eb8f069SAndrzej Hajda 10787eb8f069SAndrzej Hajda if (length) { 1079bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10807eb8f069SAndrzej Hajda switch (length) { 10817eb8f069SAndrzej Hajda case 3: 10827eb8f069SAndrzej Hajda payload[2] = (reg >> 16) & 0xff; 10837eb8f069SAndrzej Hajda /* Fall through */ 10847eb8f069SAndrzej Hajda case 2: 10857eb8f069SAndrzej Hajda payload[1] = (reg >> 8) & 0xff; 10867eb8f069SAndrzej Hajda /* Fall through */ 10877eb8f069SAndrzej Hajda case 1: 10887eb8f069SAndrzej Hajda payload[0] = reg & 0xff; 10897eb8f069SAndrzej Hajda } 10907eb8f069SAndrzej Hajda } 10917eb8f069SAndrzej Hajda 10927eb8f069SAndrzej Hajda if (xfer->rx_done == xfer->rx_len) 10937eb8f069SAndrzej Hajda xfer->result = 0; 10947eb8f069SAndrzej Hajda 10957eb8f069SAndrzej Hajda clear_fifo: 10967eb8f069SAndrzej Hajda length = DSI_RX_FIFO_SIZE / 4; 10977eb8f069SAndrzej Hajda do { 1098bb32e408SAndrzej Hajda reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG); 10997eb8f069SAndrzej Hajda if (reg == DSI_RX_FIFO_EMPTY) 11007eb8f069SAndrzej Hajda break; 11017eb8f069SAndrzej Hajda } while (--length); 11027eb8f069SAndrzej Hajda } 11037eb8f069SAndrzej Hajda 11047eb8f069SAndrzej Hajda static void exynos_dsi_transfer_start(struct exynos_dsi *dsi) 11057eb8f069SAndrzej Hajda { 11067eb8f069SAndrzej Hajda unsigned long flags; 11077eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer; 11087eb8f069SAndrzej Hajda bool start = false; 11097eb8f069SAndrzej Hajda 11107eb8f069SAndrzej Hajda again: 11117eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11127eb8f069SAndrzej Hajda 11137eb8f069SAndrzej Hajda if (list_empty(&dsi->transfer_list)) { 11147eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11157eb8f069SAndrzej Hajda return; 11167eb8f069SAndrzej Hajda } 11177eb8f069SAndrzej Hajda 11187eb8f069SAndrzej Hajda xfer = list_first_entry(&dsi->transfer_list, 11197eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list); 11207eb8f069SAndrzej Hajda 11217eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11227eb8f069SAndrzej Hajda 11236c81e96dSAndrzej Hajda if (xfer->packet.payload_length && 11246c81e96dSAndrzej Hajda xfer->tx_done == xfer->packet.payload_length) 11257eb8f069SAndrzej Hajda /* waiting for RX */ 11267eb8f069SAndrzej Hajda return; 11277eb8f069SAndrzej Hajda 11287eb8f069SAndrzej Hajda exynos_dsi_send_to_fifo(dsi, xfer); 11297eb8f069SAndrzej Hajda 11306c81e96dSAndrzej Hajda if (xfer->packet.payload_length || xfer->rx_len) 11317eb8f069SAndrzej Hajda return; 11327eb8f069SAndrzej Hajda 11337eb8f069SAndrzej Hajda xfer->result = 0; 11347eb8f069SAndrzej Hajda complete(&xfer->completed); 11357eb8f069SAndrzej Hajda 11367eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11377eb8f069SAndrzej Hajda 11387eb8f069SAndrzej Hajda list_del_init(&xfer->list); 11397eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 11407eb8f069SAndrzej Hajda 11417eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11427eb8f069SAndrzej Hajda 11437eb8f069SAndrzej Hajda if (start) 11447eb8f069SAndrzej Hajda goto again; 11457eb8f069SAndrzej Hajda } 11467eb8f069SAndrzej Hajda 11477eb8f069SAndrzej Hajda static bool exynos_dsi_transfer_finish(struct exynos_dsi *dsi) 11487eb8f069SAndrzej Hajda { 11497eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer; 11507eb8f069SAndrzej Hajda unsigned long flags; 11517eb8f069SAndrzej Hajda bool start = true; 11527eb8f069SAndrzej Hajda 11537eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11547eb8f069SAndrzej Hajda 11557eb8f069SAndrzej Hajda if (list_empty(&dsi->transfer_list)) { 11567eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11577eb8f069SAndrzej Hajda return false; 11587eb8f069SAndrzej Hajda } 11597eb8f069SAndrzej Hajda 11607eb8f069SAndrzej Hajda xfer = list_first_entry(&dsi->transfer_list, 11617eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list); 11627eb8f069SAndrzej Hajda 11637eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11647eb8f069SAndrzej Hajda 11657eb8f069SAndrzej Hajda dev_dbg(dsi->dev, 11669cdf0ed2SKrzysztof Kozlowski "> xfer %pK, tx_len %zu, tx_done %u, rx_len %u, rx_done %u\n", 11676c81e96dSAndrzej Hajda xfer, xfer->packet.payload_length, xfer->tx_done, xfer->rx_len, 11686c81e96dSAndrzej Hajda xfer->rx_done); 11697eb8f069SAndrzej Hajda 11706c81e96dSAndrzej Hajda if (xfer->tx_done != xfer->packet.payload_length) 11717eb8f069SAndrzej Hajda return true; 11727eb8f069SAndrzej Hajda 11737eb8f069SAndrzej Hajda if (xfer->rx_done != xfer->rx_len) 11747eb8f069SAndrzej Hajda exynos_dsi_read_from_fifo(dsi, xfer); 11757eb8f069SAndrzej Hajda 11767eb8f069SAndrzej Hajda if (xfer->rx_done != xfer->rx_len) 11777eb8f069SAndrzej Hajda return true; 11787eb8f069SAndrzej Hajda 11797eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 11807eb8f069SAndrzej Hajda 11817eb8f069SAndrzej Hajda list_del_init(&xfer->list); 11827eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 11837eb8f069SAndrzej Hajda 11847eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 11857eb8f069SAndrzej Hajda 11867eb8f069SAndrzej Hajda if (!xfer->rx_len) 11877eb8f069SAndrzej Hajda xfer->result = 0; 11887eb8f069SAndrzej Hajda complete(&xfer->completed); 11897eb8f069SAndrzej Hajda 11907eb8f069SAndrzej Hajda return start; 11917eb8f069SAndrzej Hajda } 11927eb8f069SAndrzej Hajda 11937eb8f069SAndrzej Hajda static void exynos_dsi_remove_transfer(struct exynos_dsi *dsi, 11947eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 11957eb8f069SAndrzej Hajda { 11967eb8f069SAndrzej Hajda unsigned long flags; 11977eb8f069SAndrzej Hajda bool start; 11987eb8f069SAndrzej Hajda 11997eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 12007eb8f069SAndrzej Hajda 12017eb8f069SAndrzej Hajda if (!list_empty(&dsi->transfer_list) && 12027eb8f069SAndrzej Hajda xfer == list_first_entry(&dsi->transfer_list, 12037eb8f069SAndrzej Hajda struct exynos_dsi_transfer, list)) { 12047eb8f069SAndrzej Hajda list_del_init(&xfer->list); 12057eb8f069SAndrzej Hajda start = !list_empty(&dsi->transfer_list); 12067eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12077eb8f069SAndrzej Hajda if (start) 12087eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12097eb8f069SAndrzej Hajda return; 12107eb8f069SAndrzej Hajda } 12117eb8f069SAndrzej Hajda 12127eb8f069SAndrzej Hajda list_del_init(&xfer->list); 12137eb8f069SAndrzej Hajda 12147eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12157eb8f069SAndrzej Hajda } 12167eb8f069SAndrzej Hajda 12177eb8f069SAndrzej Hajda static int exynos_dsi_transfer(struct exynos_dsi *dsi, 12187eb8f069SAndrzej Hajda struct exynos_dsi_transfer *xfer) 12197eb8f069SAndrzej Hajda { 12207eb8f069SAndrzej Hajda unsigned long flags; 12217eb8f069SAndrzej Hajda bool stopped; 12227eb8f069SAndrzej Hajda 12237eb8f069SAndrzej Hajda xfer->tx_done = 0; 12247eb8f069SAndrzej Hajda xfer->rx_done = 0; 12257eb8f069SAndrzej Hajda xfer->result = -ETIMEDOUT; 12267eb8f069SAndrzej Hajda init_completion(&xfer->completed); 12277eb8f069SAndrzej Hajda 12287eb8f069SAndrzej Hajda spin_lock_irqsave(&dsi->transfer_lock, flags); 12297eb8f069SAndrzej Hajda 12307eb8f069SAndrzej Hajda stopped = list_empty(&dsi->transfer_list); 12317eb8f069SAndrzej Hajda list_add_tail(&xfer->list, &dsi->transfer_list); 12327eb8f069SAndrzej Hajda 12337eb8f069SAndrzej Hajda spin_unlock_irqrestore(&dsi->transfer_lock, flags); 12347eb8f069SAndrzej Hajda 12357eb8f069SAndrzej Hajda if (stopped) 12367eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12377eb8f069SAndrzej Hajda 12387eb8f069SAndrzej Hajda wait_for_completion_timeout(&xfer->completed, 12397eb8f069SAndrzej Hajda msecs_to_jiffies(DSI_XFER_TIMEOUT_MS)); 12407eb8f069SAndrzej Hajda if (xfer->result == -ETIMEDOUT) { 12416c81e96dSAndrzej Hajda struct mipi_dsi_packet *pkt = &xfer->packet; 12427eb8f069SAndrzej Hajda exynos_dsi_remove_transfer(dsi, xfer); 12436c81e96dSAndrzej Hajda dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header, 12446c81e96dSAndrzej Hajda (int)pkt->payload_length, pkt->payload); 12457eb8f069SAndrzej Hajda return -ETIMEDOUT; 12467eb8f069SAndrzej Hajda } 12477eb8f069SAndrzej Hajda 12487eb8f069SAndrzej Hajda /* Also covers hardware timeout condition */ 12497eb8f069SAndrzej Hajda return xfer->result; 12507eb8f069SAndrzej Hajda } 12517eb8f069SAndrzej Hajda 12527eb8f069SAndrzej Hajda static irqreturn_t exynos_dsi_irq(int irq, void *dev_id) 12537eb8f069SAndrzej Hajda { 12547eb8f069SAndrzej Hajda struct exynos_dsi *dsi = dev_id; 12557eb8f069SAndrzej Hajda u32 status; 12567eb8f069SAndrzej Hajda 1257bb32e408SAndrzej Hajda status = exynos_dsi_read(dsi, DSIM_INTSRC_REG); 12587eb8f069SAndrzej Hajda if (!status) { 12597eb8f069SAndrzej Hajda static unsigned long int j; 12607eb8f069SAndrzej Hajda if (printk_timed_ratelimit(&j, 500)) 12617eb8f069SAndrzej Hajda dev_warn(dsi->dev, "spurious interrupt\n"); 12627eb8f069SAndrzej Hajda return IRQ_HANDLED; 12637eb8f069SAndrzej Hajda } 1264bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_INTSRC_REG, status); 12657eb8f069SAndrzej Hajda 12667eb8f069SAndrzej Hajda if (status & DSIM_INT_SW_RST_RELEASE) { 1267e6f988a4SHyungwon Hwang u32 mask = ~(DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY | 1268ecf81ed9SAndrzej Hajda DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_RX_ECC_ERR | 1269ecf81ed9SAndrzej Hajda DSIM_INT_SW_RST_RELEASE); 1270bb32e408SAndrzej Hajda exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask); 12717eb8f069SAndrzej Hajda complete(&dsi->completed); 12727eb8f069SAndrzej Hajda return IRQ_HANDLED; 12737eb8f069SAndrzej Hajda } 12747eb8f069SAndrzej Hajda 1275e6f988a4SHyungwon Hwang if (!(status & (DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY | 1276ecf81ed9SAndrzej Hajda DSIM_INT_PLL_STABLE))) 12777eb8f069SAndrzej Hajda return IRQ_HANDLED; 12787eb8f069SAndrzej Hajda 12797eb8f069SAndrzej Hajda if (exynos_dsi_transfer_finish(dsi)) 12807eb8f069SAndrzej Hajda exynos_dsi_transfer_start(dsi); 12817eb8f069SAndrzej Hajda 12827eb8f069SAndrzej Hajda return IRQ_HANDLED; 12837eb8f069SAndrzej Hajda } 12847eb8f069SAndrzej Hajda 1285e17ddeccSYoungJun Cho static irqreturn_t exynos_dsi_te_irq_handler(int irq, void *dev_id) 1286e17ddeccSYoungJun Cho { 1287e17ddeccSYoungJun Cho struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id; 12882b8376c8SGustavo Padovan struct drm_encoder *encoder = &dsi->encoder; 1289e17ddeccSYoungJun Cho 12900e480f6fSHyungwon Hwang if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE) 1291e17ddeccSYoungJun Cho exynos_drm_crtc_te_handler(encoder->crtc); 1292e17ddeccSYoungJun Cho 1293e17ddeccSYoungJun Cho return IRQ_HANDLED; 1294e17ddeccSYoungJun Cho } 1295e17ddeccSYoungJun Cho 1296e17ddeccSYoungJun Cho static void exynos_dsi_enable_irq(struct exynos_dsi *dsi) 1297e17ddeccSYoungJun Cho { 1298e17ddeccSYoungJun Cho enable_irq(dsi->irq); 1299e17ddeccSYoungJun Cho 1300e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) 1301e17ddeccSYoungJun Cho enable_irq(gpio_to_irq(dsi->te_gpio)); 1302e17ddeccSYoungJun Cho } 1303e17ddeccSYoungJun Cho 1304e17ddeccSYoungJun Cho static void exynos_dsi_disable_irq(struct exynos_dsi *dsi) 1305e17ddeccSYoungJun Cho { 1306e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) 1307e17ddeccSYoungJun Cho disable_irq(gpio_to_irq(dsi->te_gpio)); 1308e17ddeccSYoungJun Cho 1309e17ddeccSYoungJun Cho disable_irq(dsi->irq); 1310e17ddeccSYoungJun Cho } 1311e17ddeccSYoungJun Cho 13127eb8f069SAndrzej Hajda static int exynos_dsi_init(struct exynos_dsi *dsi) 13137eb8f069SAndrzej Hajda { 13142154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1315d668e8bfSHyungwon Hwang 13167eb8f069SAndrzej Hajda exynos_dsi_reset(dsi); 1317e17ddeccSYoungJun Cho exynos_dsi_enable_irq(dsi); 1318e6f988a4SHyungwon Hwang 1319e6f988a4SHyungwon Hwang if (driver_data->reg_values[RESET_TYPE] == DSIM_FUNCRST) 1320e6f988a4SHyungwon Hwang exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1); 1321e6f988a4SHyungwon Hwang 13229a320415SYoungJun Cho exynos_dsi_enable_clock(dsi); 1323d668e8bfSHyungwon Hwang if (driver_data->wait_for_reset) 13247eb8f069SAndrzej Hajda exynos_dsi_wait_for_reset(dsi); 13259a320415SYoungJun Cho exynos_dsi_set_phy_ctrl(dsi); 13267eb8f069SAndrzej Hajda exynos_dsi_init_link(dsi); 13277eb8f069SAndrzej Hajda 13287eb8f069SAndrzej Hajda return 0; 13297eb8f069SAndrzej Hajda } 13307eb8f069SAndrzej Hajda 1331295e7954SAndrzej Hajda static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi, 1332295e7954SAndrzej Hajda struct device *panel) 1333e17ddeccSYoungJun Cho { 1334e17ddeccSYoungJun Cho int ret; 13350cef83a5SYoungJun Cho int te_gpio_irq; 1336e17ddeccSYoungJun Cho 1337295e7954SAndrzej Hajda dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0); 133822e098daSAndrzej Hajda if (dsi->te_gpio == -ENOENT) 133922e098daSAndrzej Hajda return 0; 134022e098daSAndrzej Hajda 1341e17ddeccSYoungJun Cho if (!gpio_is_valid(dsi->te_gpio)) { 1342e17ddeccSYoungJun Cho ret = dsi->te_gpio; 134322e098daSAndrzej Hajda dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret); 1344e17ddeccSYoungJun Cho goto out; 1345e17ddeccSYoungJun Cho } 1346e17ddeccSYoungJun Cho 134751d1decaSHyungwon Hwang ret = gpio_request(dsi->te_gpio, "te_gpio"); 1348e17ddeccSYoungJun Cho if (ret) { 1349e17ddeccSYoungJun Cho dev_err(dsi->dev, "gpio request failed with %d\n", ret); 1350e17ddeccSYoungJun Cho goto out; 1351e17ddeccSYoungJun Cho } 1352e17ddeccSYoungJun Cho 13530cef83a5SYoungJun Cho te_gpio_irq = gpio_to_irq(dsi->te_gpio); 13540cef83a5SYoungJun Cho irq_set_status_flags(te_gpio_irq, IRQ_NOAUTOEN); 135551d1decaSHyungwon Hwang 13560cef83a5SYoungJun Cho ret = request_threaded_irq(te_gpio_irq, exynos_dsi_te_irq_handler, NULL, 1357e17ddeccSYoungJun Cho IRQF_TRIGGER_RISING, "TE", dsi); 1358e17ddeccSYoungJun Cho if (ret) { 1359e17ddeccSYoungJun Cho dev_err(dsi->dev, "request interrupt failed with %d\n", ret); 1360e17ddeccSYoungJun Cho gpio_free(dsi->te_gpio); 1361e17ddeccSYoungJun Cho goto out; 1362e17ddeccSYoungJun Cho } 1363e17ddeccSYoungJun Cho 1364e17ddeccSYoungJun Cho out: 1365e17ddeccSYoungJun Cho return ret; 1366e17ddeccSYoungJun Cho } 1367e17ddeccSYoungJun Cho 1368e17ddeccSYoungJun Cho static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi) 1369e17ddeccSYoungJun Cho { 1370e17ddeccSYoungJun Cho if (gpio_is_valid(dsi->te_gpio)) { 1371e17ddeccSYoungJun Cho free_irq(gpio_to_irq(dsi->te_gpio), dsi); 1372e17ddeccSYoungJun Cho gpio_free(dsi->te_gpio); 1373e17ddeccSYoungJun Cho dsi->te_gpio = -ENOENT; 1374e17ddeccSYoungJun Cho } 1375e17ddeccSYoungJun Cho } 1376e17ddeccSYoungJun Cho 13772b8376c8SGustavo Padovan static void exynos_dsi_enable(struct drm_encoder *encoder) 13787eb8f069SAndrzej Hajda { 1379cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 13807eb8f069SAndrzej Hajda int ret; 13817eb8f069SAndrzej Hajda 13827eb8f069SAndrzej Hajda if (dsi->state & DSIM_STATE_ENABLED) 1383b6595dc7SGustavo Padovan return; 13847eb8f069SAndrzej Hajda 1385ba6e4779SInki Dae pm_runtime_get_sync(dsi->dev); 13860e480f6fSHyungwon Hwang dsi->state |= DSIM_STATE_ENABLED; 13870e480f6fSHyungwon Hwang 13888a08f671SMaciej Purski if (dsi->panel) { 1389cdfb8694SAjay Kumar ret = drm_panel_prepare(dsi->panel); 13908a08f671SMaciej Purski if (ret < 0) 13918a08f671SMaciej Purski goto err_put_sync; 13928a08f671SMaciej Purski } else { 13938a08f671SMaciej Purski drm_bridge_pre_enable(dsi->out_bridge); 13947eb8f069SAndrzej Hajda } 13957eb8f069SAndrzej Hajda 13967eb8f069SAndrzej Hajda exynos_dsi_set_display_mode(dsi); 13977eb8f069SAndrzej Hajda exynos_dsi_set_display_enable(dsi, true); 13987eb8f069SAndrzej Hajda 13998a08f671SMaciej Purski if (dsi->panel) { 1400cdfb8694SAjay Kumar ret = drm_panel_enable(dsi->panel); 14018a08f671SMaciej Purski if (ret < 0) 14028a08f671SMaciej Purski goto err_display_disable; 14038a08f671SMaciej Purski } else { 14048a08f671SMaciej Purski drm_bridge_enable(dsi->out_bridge); 1405cdfb8694SAjay Kumar } 1406cdfb8694SAjay Kumar 14070e480f6fSHyungwon Hwang dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; 14088a08f671SMaciej Purski return; 14098a08f671SMaciej Purski 14108a08f671SMaciej Purski err_display_disable: 14118a08f671SMaciej Purski exynos_dsi_set_display_enable(dsi, false); 14128a08f671SMaciej Purski drm_panel_unprepare(dsi->panel); 14138a08f671SMaciej Purski 14148a08f671SMaciej Purski err_put_sync: 14158a08f671SMaciej Purski dsi->state &= ~DSIM_STATE_ENABLED; 14168a08f671SMaciej Purski pm_runtime_put(dsi->dev); 14177eb8f069SAndrzej Hajda } 14187eb8f069SAndrzej Hajda 14192b8376c8SGustavo Padovan static void exynos_dsi_disable(struct drm_encoder *encoder) 14207eb8f069SAndrzej Hajda { 1421cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1422b6595dc7SGustavo Padovan 14237eb8f069SAndrzej Hajda if (!(dsi->state & DSIM_STATE_ENABLED)) 14247eb8f069SAndrzej Hajda return; 14257eb8f069SAndrzej Hajda 14260e480f6fSHyungwon Hwang dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE; 14270e480f6fSHyungwon Hwang 14287eb8f069SAndrzej Hajda drm_panel_disable(dsi->panel); 14298a08f671SMaciej Purski drm_bridge_disable(dsi->out_bridge); 1430cdfb8694SAjay Kumar exynos_dsi_set_display_enable(dsi, false); 1431cdfb8694SAjay Kumar drm_panel_unprepare(dsi->panel); 14328a08f671SMaciej Purski drm_bridge_post_disable(dsi->out_bridge); 14337eb8f069SAndrzej Hajda dsi->state &= ~DSIM_STATE_ENABLED; 1434ba6e4779SInki Dae pm_runtime_put_sync(dsi->dev); 14357eb8f069SAndrzej Hajda } 14367eb8f069SAndrzej Hajda 14377eb8f069SAndrzej Hajda static enum drm_connector_status 14387eb8f069SAndrzej Hajda exynos_dsi_detect(struct drm_connector *connector, bool force) 14397eb8f069SAndrzej Hajda { 1440295e7954SAndrzej Hajda return connector->status; 14417eb8f069SAndrzej Hajda } 14427eb8f069SAndrzej Hajda 14437eb8f069SAndrzej Hajda static void exynos_dsi_connector_destroy(struct drm_connector *connector) 14447eb8f069SAndrzej Hajda { 14450ae46015SAndrzej Hajda drm_connector_unregister(connector); 14460ae46015SAndrzej Hajda drm_connector_cleanup(connector); 14470ae46015SAndrzej Hajda connector->dev = NULL; 14487eb8f069SAndrzej Hajda } 14497eb8f069SAndrzej Hajda 1450800ba2b5SVille Syrjälä static const struct drm_connector_funcs exynos_dsi_connector_funcs = { 14517eb8f069SAndrzej Hajda .detect = exynos_dsi_detect, 14527eb8f069SAndrzej Hajda .fill_modes = drm_helper_probe_single_connector_modes, 14537eb8f069SAndrzej Hajda .destroy = exynos_dsi_connector_destroy, 14544ea9526bSGustavo Padovan .reset = drm_atomic_helper_connector_reset, 14554ea9526bSGustavo Padovan .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 14564ea9526bSGustavo Padovan .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 14577eb8f069SAndrzej Hajda }; 14587eb8f069SAndrzej Hajda 14597eb8f069SAndrzej Hajda static int exynos_dsi_get_modes(struct drm_connector *connector) 14607eb8f069SAndrzej Hajda { 14617eb8f069SAndrzej Hajda struct exynos_dsi *dsi = connector_to_dsi(connector); 14627eb8f069SAndrzej Hajda 14637eb8f069SAndrzej Hajda if (dsi->panel) 1464d02d8a9cSSam Ravnborg return drm_panel_get_modes(dsi->panel); 14657eb8f069SAndrzej Hajda 14667eb8f069SAndrzej Hajda return 0; 14677eb8f069SAndrzej Hajda } 14687eb8f069SAndrzej Hajda 1469800ba2b5SVille Syrjälä static const struct drm_connector_helper_funcs exynos_dsi_connector_helper_funcs = { 14707eb8f069SAndrzej Hajda .get_modes = exynos_dsi_get_modes, 14717eb8f069SAndrzej Hajda }; 14727eb8f069SAndrzej Hajda 14732b8376c8SGustavo Padovan static int exynos_dsi_create_connector(struct drm_encoder *encoder) 14747eb8f069SAndrzej Hajda { 14752b8376c8SGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 14767eb8f069SAndrzej Hajda struct drm_connector *connector = &dsi->connector; 1477deee3284SAndrzej Hajda struct drm_device *drm = encoder->dev; 14787eb8f069SAndrzej Hajda int ret; 14797eb8f069SAndrzej Hajda 14807eb8f069SAndrzej Hajda connector->polled = DRM_CONNECTOR_POLL_HPD; 14817eb8f069SAndrzej Hajda 1482deee3284SAndrzej Hajda ret = drm_connector_init(drm, connector, &exynos_dsi_connector_funcs, 14837eb8f069SAndrzej Hajda DRM_MODE_CONNECTOR_DSI); 14847eb8f069SAndrzej Hajda if (ret) { 14856f83d208SInki Dae DRM_DEV_ERROR(dsi->dev, 14866f83d208SInki Dae "Failed to initialize connector with drm\n"); 14877eb8f069SAndrzej Hajda return ret; 14887eb8f069SAndrzej Hajda } 14897eb8f069SAndrzej Hajda 1490295e7954SAndrzej Hajda connector->status = connector_status_disconnected; 14917eb8f069SAndrzej Hajda drm_connector_helper_add(connector, &exynos_dsi_connector_helper_funcs); 1492cde4c44dSDaniel Vetter drm_connector_attach_encoder(connector, encoder); 1493deee3284SAndrzej Hajda if (!drm->registered) 1494deee3284SAndrzej Hajda return 0; 14957eb8f069SAndrzej Hajda 1496deee3284SAndrzej Hajda connector->funcs->reset(connector); 1497deee3284SAndrzej Hajda drm_fb_helper_add_one_connector(drm->fb_helper, connector); 1498deee3284SAndrzej Hajda drm_connector_register(connector); 14997eb8f069SAndrzej Hajda return 0; 15007eb8f069SAndrzej Hajda } 15017eb8f069SAndrzej Hajda 1502800ba2b5SVille Syrjälä static const struct drm_encoder_helper_funcs exynos_dsi_encoder_helper_funcs = { 1503b6595dc7SGustavo Padovan .enable = exynos_dsi_enable, 1504b6595dc7SGustavo Padovan .disable = exynos_dsi_disable, 15057eb8f069SAndrzej Hajda }; 15067eb8f069SAndrzej Hajda 1507800ba2b5SVille Syrjälä static const struct drm_encoder_funcs exynos_dsi_encoder_funcs = { 15082b8376c8SGustavo Padovan .destroy = drm_encoder_cleanup, 15092b8376c8SGustavo Padovan }; 15102b8376c8SGustavo Padovan 1511bd024b86SSjoerd Simons MODULE_DEVICE_TABLE(of, exynos_dsi_of_match); 15127eb8f069SAndrzej Hajda 1513295e7954SAndrzej Hajda static int exynos_dsi_host_attach(struct mipi_dsi_host *host, 1514295e7954SAndrzej Hajda struct mipi_dsi_device *device) 1515295e7954SAndrzej Hajda { 1516295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 15176afb7721SMaciej Purski struct drm_encoder *encoder = &dsi->encoder; 15186afb7721SMaciej Purski struct drm_device *drm = encoder->dev; 15196afb7721SMaciej Purski struct drm_bridge *out_bridge; 15206afb7721SMaciej Purski 15216afb7721SMaciej Purski out_bridge = of_drm_find_bridge(device->dev.of_node); 15226afb7721SMaciej Purski if (out_bridge) { 15236afb7721SMaciej Purski drm_bridge_attach(encoder, out_bridge, NULL); 15246afb7721SMaciej Purski dsi->out_bridge = out_bridge; 15256afb7721SMaciej Purski encoder->bridge = NULL; 15266afb7721SMaciej Purski } else { 15276afb7721SMaciej Purski int ret = exynos_dsi_create_connector(encoder); 15286afb7721SMaciej Purski 15296afb7721SMaciej Purski if (ret) { 15306f83d208SInki Dae DRM_DEV_ERROR(dsi->dev, 15316f83d208SInki Dae "failed to create connector ret = %d\n", 15326f83d208SInki Dae ret); 15336afb7721SMaciej Purski drm_encoder_cleanup(encoder); 15346afb7721SMaciej Purski return ret; 15356afb7721SMaciej Purski } 15366afb7721SMaciej Purski 15376afb7721SMaciej Purski dsi->panel = of_drm_find_panel(device->dev.of_node); 15388727b230SDan Carpenter if (IS_ERR(dsi->panel)) { 15398727b230SDan Carpenter dsi->panel = NULL; 15408727b230SDan Carpenter } else { 15416afb7721SMaciej Purski drm_panel_attach(dsi->panel, &dsi->connector); 15426afb7721SMaciej Purski dsi->connector.status = connector_status_connected; 15436afb7721SMaciej Purski } 15446afb7721SMaciej Purski } 1545295e7954SAndrzej Hajda 1546295e7954SAndrzej Hajda /* 1547295e7954SAndrzej Hajda * This is a temporary solution and should be made by more generic way. 1548295e7954SAndrzej Hajda * 1549295e7954SAndrzej Hajda * If attached panel device is for command mode one, dsi should register 1550295e7954SAndrzej Hajda * TE interrupt handler. 1551295e7954SAndrzej Hajda */ 1552295e7954SAndrzej Hajda if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) { 1553295e7954SAndrzej Hajda int ret = exynos_dsi_register_te_irq(dsi, &device->dev); 1554295e7954SAndrzej Hajda if (ret) 1555295e7954SAndrzej Hajda return ret; 1556295e7954SAndrzej Hajda } 1557295e7954SAndrzej Hajda 1558295e7954SAndrzej Hajda mutex_lock(&drm->mode_config.mutex); 1559295e7954SAndrzej Hajda 1560295e7954SAndrzej Hajda dsi->lanes = device->lanes; 1561295e7954SAndrzej Hajda dsi->format = device->format; 1562295e7954SAndrzej Hajda dsi->mode_flags = device->mode_flags; 1563c038f538SAndrzej Hajda exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode = 1564c038f538SAndrzej Hajda !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO); 1565295e7954SAndrzej Hajda 1566295e7954SAndrzej Hajda mutex_unlock(&drm->mode_config.mutex); 1567295e7954SAndrzej Hajda 1568295e7954SAndrzej Hajda if (drm->mode_config.poll_enabled) 1569295e7954SAndrzej Hajda drm_kms_helper_hotplug_event(drm); 1570295e7954SAndrzej Hajda 1571295e7954SAndrzej Hajda return 0; 1572295e7954SAndrzej Hajda } 1573295e7954SAndrzej Hajda 1574295e7954SAndrzej Hajda static int exynos_dsi_host_detach(struct mipi_dsi_host *host, 1575295e7954SAndrzej Hajda struct mipi_dsi_device *device) 1576295e7954SAndrzej Hajda { 1577295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 15786afb7721SMaciej Purski struct drm_device *drm = dsi->encoder.dev; 1579295e7954SAndrzej Hajda 1580295e7954SAndrzej Hajda if (dsi->panel) { 15816afb7721SMaciej Purski mutex_lock(&drm->mode_config.mutex); 1582295e7954SAndrzej Hajda exynos_dsi_disable(&dsi->encoder); 1583295e7954SAndrzej Hajda drm_panel_detach(dsi->panel); 1584295e7954SAndrzej Hajda dsi->panel = NULL; 1585295e7954SAndrzej Hajda dsi->connector.status = connector_status_disconnected; 1586295e7954SAndrzej Hajda mutex_unlock(&drm->mode_config.mutex); 15876afb7721SMaciej Purski } else { 15886afb7721SMaciej Purski if (dsi->out_bridge->funcs->detach) 15896afb7721SMaciej Purski dsi->out_bridge->funcs->detach(dsi->out_bridge); 15906afb7721SMaciej Purski dsi->out_bridge = NULL; 15916afb7721SMaciej Purski } 1592295e7954SAndrzej Hajda 1593295e7954SAndrzej Hajda if (drm->mode_config.poll_enabled) 1594295e7954SAndrzej Hajda drm_kms_helper_hotplug_event(drm); 1595295e7954SAndrzej Hajda 1596295e7954SAndrzej Hajda exynos_dsi_unregister_te_irq(dsi); 1597295e7954SAndrzej Hajda 1598295e7954SAndrzej Hajda return 0; 1599295e7954SAndrzej Hajda } 1600295e7954SAndrzej Hajda 1601295e7954SAndrzej Hajda static ssize_t exynos_dsi_host_transfer(struct mipi_dsi_host *host, 1602295e7954SAndrzej Hajda const struct mipi_dsi_msg *msg) 1603295e7954SAndrzej Hajda { 1604295e7954SAndrzej Hajda struct exynos_dsi *dsi = host_to_dsi(host); 1605295e7954SAndrzej Hajda struct exynos_dsi_transfer xfer; 1606295e7954SAndrzej Hajda int ret; 1607295e7954SAndrzej Hajda 1608295e7954SAndrzej Hajda if (!(dsi->state & DSIM_STATE_ENABLED)) 1609295e7954SAndrzej Hajda return -EINVAL; 1610295e7954SAndrzej Hajda 1611295e7954SAndrzej Hajda if (!(dsi->state & DSIM_STATE_INITIALIZED)) { 1612295e7954SAndrzej Hajda ret = exynos_dsi_init(dsi); 1613295e7954SAndrzej Hajda if (ret) 1614295e7954SAndrzej Hajda return ret; 1615295e7954SAndrzej Hajda dsi->state |= DSIM_STATE_INITIALIZED; 1616295e7954SAndrzej Hajda } 1617295e7954SAndrzej Hajda 1618295e7954SAndrzej Hajda ret = mipi_dsi_create_packet(&xfer.packet, msg); 1619295e7954SAndrzej Hajda if (ret < 0) 1620295e7954SAndrzej Hajda return ret; 1621295e7954SAndrzej Hajda 1622295e7954SAndrzej Hajda xfer.rx_len = msg->rx_len; 1623295e7954SAndrzej Hajda xfer.rx_payload = msg->rx_buf; 1624295e7954SAndrzej Hajda xfer.flags = msg->flags; 1625295e7954SAndrzej Hajda 1626295e7954SAndrzej Hajda ret = exynos_dsi_transfer(dsi, &xfer); 1627295e7954SAndrzej Hajda return (ret < 0) ? ret : xfer.rx_done; 1628295e7954SAndrzej Hajda } 1629295e7954SAndrzej Hajda 1630295e7954SAndrzej Hajda static const struct mipi_dsi_host_ops exynos_dsi_ops = { 1631295e7954SAndrzej Hajda .attach = exynos_dsi_host_attach, 1632295e7954SAndrzej Hajda .detach = exynos_dsi_host_detach, 1633295e7954SAndrzej Hajda .transfer = exynos_dsi_host_transfer, 1634295e7954SAndrzej Hajda }; 1635295e7954SAndrzej Hajda 16367eb8f069SAndrzej Hajda static int exynos_dsi_of_read_u32(const struct device_node *np, 16377eb8f069SAndrzej Hajda const char *propname, u32 *out_value) 16387eb8f069SAndrzej Hajda { 16397eb8f069SAndrzej Hajda int ret = of_property_read_u32(np, propname, out_value); 16407eb8f069SAndrzej Hajda 16417eb8f069SAndrzej Hajda if (ret < 0) 16424bf99144SRob Herring pr_err("%pOF: failed to get '%s' property\n", np, propname); 16437eb8f069SAndrzej Hajda 16447eb8f069SAndrzej Hajda return ret; 16457eb8f069SAndrzej Hajda } 16467eb8f069SAndrzej Hajda 16477eb8f069SAndrzej Hajda enum { 16487eb8f069SAndrzej Hajda DSI_PORT_IN, 16497eb8f069SAndrzej Hajda DSI_PORT_OUT 16507eb8f069SAndrzej Hajda }; 16517eb8f069SAndrzej Hajda 16527eb8f069SAndrzej Hajda static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) 16537eb8f069SAndrzej Hajda { 16547eb8f069SAndrzej Hajda struct device *dev = dsi->dev; 16557eb8f069SAndrzej Hajda struct device_node *node = dev->of_node; 16567eb8f069SAndrzej Hajda int ret; 16577eb8f069SAndrzej Hajda 16587eb8f069SAndrzej Hajda ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency", 16597eb8f069SAndrzej Hajda &dsi->pll_clk_rate); 16607eb8f069SAndrzej Hajda if (ret < 0) 16617eb8f069SAndrzej Hajda return ret; 16627eb8f069SAndrzej Hajda 1663f2921d8cSHoegeun Kwon ret = exynos_dsi_of_read_u32(node, "samsung,burst-clock-frequency", 16647eb8f069SAndrzej Hajda &dsi->burst_clk_rate); 16657eb8f069SAndrzej Hajda if (ret < 0) 1666f2921d8cSHoegeun Kwon return ret; 16677eb8f069SAndrzej Hajda 1668f2921d8cSHoegeun Kwon ret = exynos_dsi_of_read_u32(node, "samsung,esc-clock-frequency", 16697eb8f069SAndrzej Hajda &dsi->esc_clk_rate); 1670f5f3b9baSHyungwon Hwang if (ret < 0) 1671f2921d8cSHoegeun Kwon return ret; 1672f5f3b9baSHyungwon Hwang 16732782622eSMaciej Purski dsi->in_bridge_node = of_graph_get_remote_node(node, DSI_PORT_IN, 0); 1674f5f3b9baSHyungwon Hwang 1675f2921d8cSHoegeun Kwon return 0; 16767eb8f069SAndrzej Hajda } 16777eb8f069SAndrzej Hajda 1678f37cd5e8SInki Dae static int exynos_dsi_bind(struct device *dev, struct device *master, 1679f37cd5e8SInki Dae void *data) 1680f37cd5e8SInki Dae { 16812b8376c8SGustavo Padovan struct drm_encoder *encoder = dev_get_drvdata(dev); 16822b8376c8SGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1683f37cd5e8SInki Dae struct drm_device *drm_dev = data; 16842782622eSMaciej Purski struct drm_bridge *in_bridge; 1685f37cd5e8SInki Dae int ret; 1686f37cd5e8SInki Dae 16872b8376c8SGustavo Padovan drm_encoder_init(drm_dev, encoder, &exynos_dsi_encoder_funcs, 168813a3d91fSVille Syrjälä DRM_MODE_ENCODER_TMDS, NULL); 16892b8376c8SGustavo Padovan 16902b8376c8SGustavo Padovan drm_encoder_helper_add(encoder, &exynos_dsi_encoder_helper_funcs); 16912b8376c8SGustavo Padovan 16921ca582f1SAndrzej Hajda ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD); 16931ca582f1SAndrzej Hajda if (ret < 0) 16941ca582f1SAndrzej Hajda return ret; 16951ca582f1SAndrzej Hajda 16962782622eSMaciej Purski if (dsi->in_bridge_node) { 16972782622eSMaciej Purski in_bridge = of_drm_find_bridge(dsi->in_bridge_node); 16982782622eSMaciej Purski if (in_bridge) 16992782622eSMaciej Purski drm_bridge_attach(encoder, in_bridge, NULL); 1700c9948920SInki Dae } 1701f5f3b9baSHyungwon Hwang 1702f37cd5e8SInki Dae return mipi_dsi_host_register(&dsi->dsi_host); 1703f37cd5e8SInki Dae } 1704f37cd5e8SInki Dae 1705f37cd5e8SInki Dae static void exynos_dsi_unbind(struct device *dev, struct device *master, 1706f37cd5e8SInki Dae void *data) 1707f37cd5e8SInki Dae { 17082b8376c8SGustavo Padovan struct drm_encoder *encoder = dev_get_drvdata(dev); 1709cf67cc9aSGustavo Padovan struct exynos_dsi *dsi = encoder_to_dsi(encoder); 1710f37cd5e8SInki Dae 1711cf67cc9aSGustavo Padovan exynos_dsi_disable(encoder); 1712f37cd5e8SInki Dae 17130ae46015SAndrzej Hajda mipi_dsi_host_unregister(&dsi->dsi_host); 1714f37cd5e8SInki Dae } 1715f37cd5e8SInki Dae 1716f37cd5e8SInki Dae static const struct component_ops exynos_dsi_component_ops = { 1717f37cd5e8SInki Dae .bind = exynos_dsi_bind, 1718f37cd5e8SInki Dae .unbind = exynos_dsi_unbind, 1719f37cd5e8SInki Dae }; 1720f37cd5e8SInki Dae 17217eb8f069SAndrzej Hajda static int exynos_dsi_probe(struct platform_device *pdev) 17227eb8f069SAndrzej Hajda { 17232900c69cSAndrzej Hajda struct device *dev = &pdev->dev; 17247eb8f069SAndrzej Hajda struct resource *res; 17257eb8f069SAndrzej Hajda struct exynos_dsi *dsi; 17260ff03fd1SHyungwon Hwang int ret, i; 17277eb8f069SAndrzej Hajda 17282900c69cSAndrzej Hajda dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL); 17292900c69cSAndrzej Hajda if (!dsi) 17302900c69cSAndrzej Hajda return -ENOMEM; 17312900c69cSAndrzej Hajda 1732e17ddeccSYoungJun Cho /* To be checked as invalid one */ 1733e17ddeccSYoungJun Cho dsi->te_gpio = -ENOENT; 1734e17ddeccSYoungJun Cho 17357eb8f069SAndrzej Hajda init_completion(&dsi->completed); 17367eb8f069SAndrzej Hajda spin_lock_init(&dsi->transfer_lock); 17377eb8f069SAndrzej Hajda INIT_LIST_HEAD(&dsi->transfer_list); 17387eb8f069SAndrzej Hajda 17397eb8f069SAndrzej Hajda dsi->dsi_host.ops = &exynos_dsi_ops; 1740e2d2a1e0SAndrzej Hajda dsi->dsi_host.dev = dev; 17417eb8f069SAndrzej Hajda 1742e2d2a1e0SAndrzej Hajda dsi->dev = dev; 17432154ac92SMarek Szyprowski dsi->driver_data = of_device_get_match_data(dev); 17447eb8f069SAndrzej Hajda 17457eb8f069SAndrzej Hajda ret = exynos_dsi_parse_dt(dsi); 17467eb8f069SAndrzej Hajda if (ret) 174786650408SAndrzej Hajda return ret; 17487eb8f069SAndrzej Hajda 17497eb8f069SAndrzej Hajda dsi->supplies[0].supply = "vddcore"; 17507eb8f069SAndrzej Hajda dsi->supplies[1].supply = "vddio"; 1751e2d2a1e0SAndrzej Hajda ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies), 17527eb8f069SAndrzej Hajda dsi->supplies); 17537eb8f069SAndrzej Hajda if (ret) { 1754e2d2a1e0SAndrzej Hajda dev_info(dev, "failed to get regulators: %d\n", ret); 17557eb8f069SAndrzej Hajda return -EPROBE_DEFER; 17567eb8f069SAndrzej Hajda } 17577eb8f069SAndrzej Hajda 1758a86854d0SKees Cook dsi->clks = devm_kcalloc(dev, 1759a86854d0SKees Cook dsi->driver_data->num_clks, sizeof(*dsi->clks), 17600ff03fd1SHyungwon Hwang GFP_KERNEL); 1761e6f988a4SHyungwon Hwang if (!dsi->clks) 1762e6f988a4SHyungwon Hwang return -ENOMEM; 1763e6f988a4SHyungwon Hwang 17640ff03fd1SHyungwon Hwang for (i = 0; i < dsi->driver_data->num_clks; i++) { 17650ff03fd1SHyungwon Hwang dsi->clks[i] = devm_clk_get(dev, clk_names[i]); 17660ff03fd1SHyungwon Hwang if (IS_ERR(dsi->clks[i])) { 17670ff03fd1SHyungwon Hwang if (strcmp(clk_names[i], "sclk_mipi") == 0) { 17680ff03fd1SHyungwon Hwang strcpy(clk_names[i], OLD_SCLK_MIPI_CLK_NAME); 17690ff03fd1SHyungwon Hwang i--; 17700ff03fd1SHyungwon Hwang continue; 17717eb8f069SAndrzej Hajda } 17727eb8f069SAndrzej Hajda 17730ff03fd1SHyungwon Hwang dev_info(dev, "failed to get the clock: %s\n", 17740ff03fd1SHyungwon Hwang clk_names[i]); 17750ff03fd1SHyungwon Hwang return PTR_ERR(dsi->clks[i]); 17760ff03fd1SHyungwon Hwang } 17777eb8f069SAndrzej Hajda } 17787eb8f069SAndrzej Hajda 17797eb8f069SAndrzej Hajda res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1780e2d2a1e0SAndrzej Hajda dsi->reg_base = devm_ioremap_resource(dev, res); 1781293d3f6aSJingoo Han if (IS_ERR(dsi->reg_base)) { 1782e2d2a1e0SAndrzej Hajda dev_err(dev, "failed to remap io region\n"); 178386650408SAndrzej Hajda return PTR_ERR(dsi->reg_base); 17847eb8f069SAndrzej Hajda } 17857eb8f069SAndrzej Hajda 1786e2d2a1e0SAndrzej Hajda dsi->phy = devm_phy_get(dev, "dsim"); 17877eb8f069SAndrzej Hajda if (IS_ERR(dsi->phy)) { 1788e2d2a1e0SAndrzej Hajda dev_info(dev, "failed to get dsim phy\n"); 178986650408SAndrzej Hajda return PTR_ERR(dsi->phy); 17907eb8f069SAndrzej Hajda } 17917eb8f069SAndrzej Hajda 17927eb8f069SAndrzej Hajda dsi->irq = platform_get_irq(pdev, 0); 17937eb8f069SAndrzej Hajda if (dsi->irq < 0) { 1794e2d2a1e0SAndrzej Hajda dev_err(dev, "failed to request dsi irq resource\n"); 179586650408SAndrzej Hajda return dsi->irq; 17967eb8f069SAndrzej Hajda } 17977eb8f069SAndrzej Hajda 17987eb8f069SAndrzej Hajda irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN); 1799e2d2a1e0SAndrzej Hajda ret = devm_request_threaded_irq(dev, dsi->irq, NULL, 18007eb8f069SAndrzej Hajda exynos_dsi_irq, IRQF_ONESHOT, 1801e2d2a1e0SAndrzej Hajda dev_name(dev), dsi); 18027eb8f069SAndrzej Hajda if (ret) { 1803e2d2a1e0SAndrzej Hajda dev_err(dev, "failed to request dsi irq\n"); 180486650408SAndrzej Hajda return ret; 18057eb8f069SAndrzej Hajda } 18067eb8f069SAndrzej Hajda 1807cf67cc9aSGustavo Padovan platform_set_drvdata(pdev, &dsi->encoder); 18087eb8f069SAndrzej Hajda 1809ba6e4779SInki Dae pm_runtime_enable(dev); 1810ba6e4779SInki Dae 181186650408SAndrzej Hajda return component_add(dev, &exynos_dsi_component_ops); 18127eb8f069SAndrzej Hajda } 18137eb8f069SAndrzej Hajda 18147eb8f069SAndrzej Hajda static int exynos_dsi_remove(struct platform_device *pdev) 18157eb8f069SAndrzej Hajda { 181670505c2eSHoegeun Kwon struct exynos_dsi *dsi = platform_get_drvdata(pdev); 181770505c2eSHoegeun Kwon 18182782622eSMaciej Purski of_node_put(dsi->in_bridge_node); 181970505c2eSHoegeun Kwon 1820ba6e4779SInki Dae pm_runtime_disable(&pdev->dev); 1821ba6e4779SInki Dae 1822df5225bcSInki Dae component_del(&pdev->dev, &exynos_dsi_component_ops); 1823df5225bcSInki Dae 18247eb8f069SAndrzej Hajda return 0; 18257eb8f069SAndrzej Hajda } 18267eb8f069SAndrzej Hajda 1827010848a7SArnd Bergmann static int __maybe_unused exynos_dsi_suspend(struct device *dev) 1828ba6e4779SInki Dae { 1829ba6e4779SInki Dae struct drm_encoder *encoder = dev_get_drvdata(dev); 1830ba6e4779SInki Dae struct exynos_dsi *dsi = encoder_to_dsi(encoder); 18312154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1832ba6e4779SInki Dae int ret, i; 1833ba6e4779SInki Dae 1834ba6e4779SInki Dae usleep_range(10000, 20000); 1835ba6e4779SInki Dae 1836ba6e4779SInki Dae if (dsi->state & DSIM_STATE_INITIALIZED) { 1837ba6e4779SInki Dae dsi->state &= ~DSIM_STATE_INITIALIZED; 1838ba6e4779SInki Dae 1839ba6e4779SInki Dae exynos_dsi_disable_clock(dsi); 1840ba6e4779SInki Dae 1841ba6e4779SInki Dae exynos_dsi_disable_irq(dsi); 1842ba6e4779SInki Dae } 1843ba6e4779SInki Dae 1844ba6e4779SInki Dae dsi->state &= ~DSIM_STATE_CMD_LPM; 1845ba6e4779SInki Dae 1846ba6e4779SInki Dae phy_power_off(dsi->phy); 1847ba6e4779SInki Dae 1848ba6e4779SInki Dae for (i = driver_data->num_clks - 1; i > -1; i--) 1849ba6e4779SInki Dae clk_disable_unprepare(dsi->clks[i]); 1850ba6e4779SInki Dae 1851ba6e4779SInki Dae ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1852ba6e4779SInki Dae if (ret < 0) 1853ba6e4779SInki Dae dev_err(dsi->dev, "cannot disable regulators %d\n", ret); 1854ba6e4779SInki Dae 1855ba6e4779SInki Dae return 0; 1856ba6e4779SInki Dae } 1857ba6e4779SInki Dae 1858010848a7SArnd Bergmann static int __maybe_unused exynos_dsi_resume(struct device *dev) 1859ba6e4779SInki Dae { 1860ba6e4779SInki Dae struct drm_encoder *encoder = dev_get_drvdata(dev); 1861ba6e4779SInki Dae struct exynos_dsi *dsi = encoder_to_dsi(encoder); 18622154ac92SMarek Szyprowski const struct exynos_dsi_driver_data *driver_data = dsi->driver_data; 1863ba6e4779SInki Dae int ret, i; 1864ba6e4779SInki Dae 1865ba6e4779SInki Dae ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1866ba6e4779SInki Dae if (ret < 0) { 1867ba6e4779SInki Dae dev_err(dsi->dev, "cannot enable regulators %d\n", ret); 1868ba6e4779SInki Dae return ret; 1869ba6e4779SInki Dae } 1870ba6e4779SInki Dae 1871ba6e4779SInki Dae for (i = 0; i < driver_data->num_clks; i++) { 1872ba6e4779SInki Dae ret = clk_prepare_enable(dsi->clks[i]); 1873ba6e4779SInki Dae if (ret < 0) 1874ba6e4779SInki Dae goto err_clk; 1875ba6e4779SInki Dae } 1876ba6e4779SInki Dae 1877ba6e4779SInki Dae ret = phy_power_on(dsi->phy); 1878ba6e4779SInki Dae if (ret < 0) { 1879ba6e4779SInki Dae dev_err(dsi->dev, "cannot enable phy %d\n", ret); 1880ba6e4779SInki Dae goto err_clk; 1881ba6e4779SInki Dae } 1882ba6e4779SInki Dae 1883ba6e4779SInki Dae return 0; 1884ba6e4779SInki Dae 1885ba6e4779SInki Dae err_clk: 1886ba6e4779SInki Dae while (--i > -1) 1887ba6e4779SInki Dae clk_disable_unprepare(dsi->clks[i]); 1888ba6e4779SInki Dae regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); 1889ba6e4779SInki Dae 1890ba6e4779SInki Dae return ret; 1891ba6e4779SInki Dae } 1892ba6e4779SInki Dae 1893ba6e4779SInki Dae static const struct dev_pm_ops exynos_dsi_pm_ops = { 1894ba6e4779SInki Dae SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL) 18957e915746SMarek Szyprowski SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 18967e915746SMarek Szyprowski pm_runtime_force_resume) 1897ba6e4779SInki Dae }; 1898ba6e4779SInki Dae 18997eb8f069SAndrzej Hajda struct platform_driver dsi_driver = { 19007eb8f069SAndrzej Hajda .probe = exynos_dsi_probe, 19017eb8f069SAndrzej Hajda .remove = exynos_dsi_remove, 19027eb8f069SAndrzej Hajda .driver = { 19037eb8f069SAndrzej Hajda .name = "exynos-dsi", 19047eb8f069SAndrzej Hajda .owner = THIS_MODULE, 1905ba6e4779SInki Dae .pm = &exynos_dsi_pm_ops, 19067eb8f069SAndrzej Hajda .of_match_table = exynos_dsi_of_match, 19077eb8f069SAndrzej Hajda }, 19087eb8f069SAndrzej Hajda }; 19097eb8f069SAndrzej Hajda 19107eb8f069SAndrzej Hajda MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>"); 19117eb8f069SAndrzej Hajda MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>"); 19127eb8f069SAndrzej Hajda MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master"); 19137eb8f069SAndrzej Hajda MODULE_LICENSE("GPL v2"); 1914