1 /* 2 * Copyright (C) 2012 Texas Instruments 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 19 20 #include <linux/hdmi.h> 21 #include <linux/module.h> 22 #include <linux/irq.h> 23 #include <sound/asoundef.h> 24 25 #include <drm/drmP.h> 26 #include <drm/drm_crtc_helper.h> 27 #include <drm/drm_encoder_slave.h> 28 #include <drm/drm_edid.h> 29 #include <drm/i2c/tda998x.h> 30 31 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 32 33 struct tda998x_priv { 34 struct i2c_client *cec; 35 struct i2c_client *hdmi; 36 uint16_t rev; 37 uint8_t current_page; 38 int dpms; 39 bool is_hdmi_sink; 40 u8 vip_cntrl_0; 41 u8 vip_cntrl_1; 42 u8 vip_cntrl_2; 43 struct tda998x_encoder_params params; 44 45 wait_queue_head_t wq_edid; 46 volatile int wq_edid_wait; 47 struct drm_encoder *encoder; 48 }; 49 50 #define to_tda998x_priv(x) ((struct tda998x_priv *)to_encoder_slave(x)->slave_priv) 51 52 /* The TDA9988 series of devices use a paged register scheme.. to simplify 53 * things we encode the page # in upper bits of the register #. To read/ 54 * write a given register, we need to make sure CURPAGE register is set 55 * appropriately. Which implies reads/writes are not atomic. Fun! 56 */ 57 58 #define REG(page, addr) (((page) << 8) | (addr)) 59 #define REG2ADDR(reg) ((reg) & 0xff) 60 #define REG2PAGE(reg) (((reg) >> 8) & 0xff) 61 62 #define REG_CURPAGE 0xff /* write */ 63 64 65 /* Page 00h: General Control */ 66 #define REG_VERSION_LSB REG(0x00, 0x00) /* read */ 67 #define REG_MAIN_CNTRL0 REG(0x00, 0x01) /* read/write */ 68 # define MAIN_CNTRL0_SR (1 << 0) 69 # define MAIN_CNTRL0_DECS (1 << 1) 70 # define MAIN_CNTRL0_DEHS (1 << 2) 71 # define MAIN_CNTRL0_CECS (1 << 3) 72 # define MAIN_CNTRL0_CEHS (1 << 4) 73 # define MAIN_CNTRL0_SCALER (1 << 7) 74 #define REG_VERSION_MSB REG(0x00, 0x02) /* read */ 75 #define REG_SOFTRESET REG(0x00, 0x0a) /* write */ 76 # define SOFTRESET_AUDIO (1 << 0) 77 # define SOFTRESET_I2C_MASTER (1 << 1) 78 #define REG_DDC_DISABLE REG(0x00, 0x0b) /* read/write */ 79 #define REG_CCLK_ON REG(0x00, 0x0c) /* read/write */ 80 #define REG_I2C_MASTER REG(0x00, 0x0d) /* read/write */ 81 # define I2C_MASTER_DIS_MM (1 << 0) 82 # define I2C_MASTER_DIS_FILT (1 << 1) 83 # define I2C_MASTER_APP_STRT_LAT (1 << 2) 84 #define REG_FEAT_POWERDOWN REG(0x00, 0x0e) /* read/write */ 85 # define FEAT_POWERDOWN_SPDIF (1 << 3) 86 #define REG_INT_FLAGS_0 REG(0x00, 0x0f) /* read/write */ 87 #define REG_INT_FLAGS_1 REG(0x00, 0x10) /* read/write */ 88 #define REG_INT_FLAGS_2 REG(0x00, 0x11) /* read/write */ 89 # define INT_FLAGS_2_EDID_BLK_RD (1 << 1) 90 #define REG_ENA_ACLK REG(0x00, 0x16) /* read/write */ 91 #define REG_ENA_VP_0 REG(0x00, 0x18) /* read/write */ 92 #define REG_ENA_VP_1 REG(0x00, 0x19) /* read/write */ 93 #define REG_ENA_VP_2 REG(0x00, 0x1a) /* read/write */ 94 #define REG_ENA_AP REG(0x00, 0x1e) /* read/write */ 95 #define REG_VIP_CNTRL_0 REG(0x00, 0x20) /* write */ 96 # define VIP_CNTRL_0_MIRR_A (1 << 7) 97 # define VIP_CNTRL_0_SWAP_A(x) (((x) & 7) << 4) 98 # define VIP_CNTRL_0_MIRR_B (1 << 3) 99 # define VIP_CNTRL_0_SWAP_B(x) (((x) & 7) << 0) 100 #define REG_VIP_CNTRL_1 REG(0x00, 0x21) /* write */ 101 # define VIP_CNTRL_1_MIRR_C (1 << 7) 102 # define VIP_CNTRL_1_SWAP_C(x) (((x) & 7) << 4) 103 # define VIP_CNTRL_1_MIRR_D (1 << 3) 104 # define VIP_CNTRL_1_SWAP_D(x) (((x) & 7) << 0) 105 #define REG_VIP_CNTRL_2 REG(0x00, 0x22) /* write */ 106 # define VIP_CNTRL_2_MIRR_E (1 << 7) 107 # define VIP_CNTRL_2_SWAP_E(x) (((x) & 7) << 4) 108 # define VIP_CNTRL_2_MIRR_F (1 << 3) 109 # define VIP_CNTRL_2_SWAP_F(x) (((x) & 7) << 0) 110 #define REG_VIP_CNTRL_3 REG(0x00, 0x23) /* write */ 111 # define VIP_CNTRL_3_X_TGL (1 << 0) 112 # define VIP_CNTRL_3_H_TGL (1 << 1) 113 # define VIP_CNTRL_3_V_TGL (1 << 2) 114 # define VIP_CNTRL_3_EMB (1 << 3) 115 # define VIP_CNTRL_3_SYNC_DE (1 << 4) 116 # define VIP_CNTRL_3_SYNC_HS (1 << 5) 117 # define VIP_CNTRL_3_DE_INT (1 << 6) 118 # define VIP_CNTRL_3_EDGE (1 << 7) 119 #define REG_VIP_CNTRL_4 REG(0x00, 0x24) /* write */ 120 # define VIP_CNTRL_4_BLC(x) (((x) & 3) << 0) 121 # define VIP_CNTRL_4_BLANKIT(x) (((x) & 3) << 2) 122 # define VIP_CNTRL_4_CCIR656 (1 << 4) 123 # define VIP_CNTRL_4_656_ALT (1 << 5) 124 # define VIP_CNTRL_4_TST_656 (1 << 6) 125 # define VIP_CNTRL_4_TST_PAT (1 << 7) 126 #define REG_VIP_CNTRL_5 REG(0x00, 0x25) /* write */ 127 # define VIP_CNTRL_5_CKCASE (1 << 0) 128 # define VIP_CNTRL_5_SP_CNT(x) (((x) & 3) << 1) 129 #define REG_MUX_AP REG(0x00, 0x26) /* read/write */ 130 # define MUX_AP_SELECT_I2S 0x64 131 # define MUX_AP_SELECT_SPDIF 0x40 132 #define REG_MUX_VP_VIP_OUT REG(0x00, 0x27) /* read/write */ 133 #define REG_MAT_CONTRL REG(0x00, 0x80) /* write */ 134 # define MAT_CONTRL_MAT_SC(x) (((x) & 3) << 0) 135 # define MAT_CONTRL_MAT_BP (1 << 2) 136 #define REG_VIDFORMAT REG(0x00, 0xa0) /* write */ 137 #define REG_REFPIX_MSB REG(0x00, 0xa1) /* write */ 138 #define REG_REFPIX_LSB REG(0x00, 0xa2) /* write */ 139 #define REG_REFLINE_MSB REG(0x00, 0xa3) /* write */ 140 #define REG_REFLINE_LSB REG(0x00, 0xa4) /* write */ 141 #define REG_NPIX_MSB REG(0x00, 0xa5) /* write */ 142 #define REG_NPIX_LSB REG(0x00, 0xa6) /* write */ 143 #define REG_NLINE_MSB REG(0x00, 0xa7) /* write */ 144 #define REG_NLINE_LSB REG(0x00, 0xa8) /* write */ 145 #define REG_VS_LINE_STRT_1_MSB REG(0x00, 0xa9) /* write */ 146 #define REG_VS_LINE_STRT_1_LSB REG(0x00, 0xaa) /* write */ 147 #define REG_VS_PIX_STRT_1_MSB REG(0x00, 0xab) /* write */ 148 #define REG_VS_PIX_STRT_1_LSB REG(0x00, 0xac) /* write */ 149 #define REG_VS_LINE_END_1_MSB REG(0x00, 0xad) /* write */ 150 #define REG_VS_LINE_END_1_LSB REG(0x00, 0xae) /* write */ 151 #define REG_VS_PIX_END_1_MSB REG(0x00, 0xaf) /* write */ 152 #define REG_VS_PIX_END_1_LSB REG(0x00, 0xb0) /* write */ 153 #define REG_VS_LINE_STRT_2_MSB REG(0x00, 0xb1) /* write */ 154 #define REG_VS_LINE_STRT_2_LSB REG(0x00, 0xb2) /* write */ 155 #define REG_VS_PIX_STRT_2_MSB REG(0x00, 0xb3) /* write */ 156 #define REG_VS_PIX_STRT_2_LSB REG(0x00, 0xb4) /* write */ 157 #define REG_VS_LINE_END_2_MSB REG(0x00, 0xb5) /* write */ 158 #define REG_VS_LINE_END_2_LSB REG(0x00, 0xb6) /* write */ 159 #define REG_VS_PIX_END_2_MSB REG(0x00, 0xb7) /* write */ 160 #define REG_VS_PIX_END_2_LSB REG(0x00, 0xb8) /* write */ 161 #define REG_HS_PIX_START_MSB REG(0x00, 0xb9) /* write */ 162 #define REG_HS_PIX_START_LSB REG(0x00, 0xba) /* write */ 163 #define REG_HS_PIX_STOP_MSB REG(0x00, 0xbb) /* write */ 164 #define REG_HS_PIX_STOP_LSB REG(0x00, 0xbc) /* write */ 165 #define REG_VWIN_START_1_MSB REG(0x00, 0xbd) /* write */ 166 #define REG_VWIN_START_1_LSB REG(0x00, 0xbe) /* write */ 167 #define REG_VWIN_END_1_MSB REG(0x00, 0xbf) /* write */ 168 #define REG_VWIN_END_1_LSB REG(0x00, 0xc0) /* write */ 169 #define REG_VWIN_START_2_MSB REG(0x00, 0xc1) /* write */ 170 #define REG_VWIN_START_2_LSB REG(0x00, 0xc2) /* write */ 171 #define REG_VWIN_END_2_MSB REG(0x00, 0xc3) /* write */ 172 #define REG_VWIN_END_2_LSB REG(0x00, 0xc4) /* write */ 173 #define REG_DE_START_MSB REG(0x00, 0xc5) /* write */ 174 #define REG_DE_START_LSB REG(0x00, 0xc6) /* write */ 175 #define REG_DE_STOP_MSB REG(0x00, 0xc7) /* write */ 176 #define REG_DE_STOP_LSB REG(0x00, 0xc8) /* write */ 177 #define REG_TBG_CNTRL_0 REG(0x00, 0xca) /* write */ 178 # define TBG_CNTRL_0_TOP_TGL (1 << 0) 179 # define TBG_CNTRL_0_TOP_SEL (1 << 1) 180 # define TBG_CNTRL_0_DE_EXT (1 << 2) 181 # define TBG_CNTRL_0_TOP_EXT (1 << 3) 182 # define TBG_CNTRL_0_FRAME_DIS (1 << 5) 183 # define TBG_CNTRL_0_SYNC_MTHD (1 << 6) 184 # define TBG_CNTRL_0_SYNC_ONCE (1 << 7) 185 #define REG_TBG_CNTRL_1 REG(0x00, 0xcb) /* write */ 186 # define TBG_CNTRL_1_H_TGL (1 << 0) 187 # define TBG_CNTRL_1_V_TGL (1 << 1) 188 # define TBG_CNTRL_1_TGL_EN (1 << 2) 189 # define TBG_CNTRL_1_X_EXT (1 << 3) 190 # define TBG_CNTRL_1_H_EXT (1 << 4) 191 # define TBG_CNTRL_1_V_EXT (1 << 5) 192 # define TBG_CNTRL_1_DWIN_DIS (1 << 6) 193 #define REG_ENABLE_SPACE REG(0x00, 0xd6) /* write */ 194 #define REG_HVF_CNTRL_0 REG(0x00, 0xe4) /* write */ 195 # define HVF_CNTRL_0_SM (1 << 7) 196 # define HVF_CNTRL_0_RWB (1 << 6) 197 # define HVF_CNTRL_0_PREFIL(x) (((x) & 3) << 2) 198 # define HVF_CNTRL_0_INTPOL(x) (((x) & 3) << 0) 199 #define REG_HVF_CNTRL_1 REG(0x00, 0xe5) /* write */ 200 # define HVF_CNTRL_1_FOR (1 << 0) 201 # define HVF_CNTRL_1_YUVBLK (1 << 1) 202 # define HVF_CNTRL_1_VQR(x) (((x) & 3) << 2) 203 # define HVF_CNTRL_1_PAD(x) (((x) & 3) << 4) 204 # define HVF_CNTRL_1_SEMI_PLANAR (1 << 6) 205 #define REG_RPT_CNTRL REG(0x00, 0xf0) /* write */ 206 #define REG_I2S_FORMAT REG(0x00, 0xfc) /* read/write */ 207 # define I2S_FORMAT(x) (((x) & 3) << 0) 208 #define REG_AIP_CLKSEL REG(0x00, 0xfd) /* write */ 209 # define AIP_CLKSEL_AIP_SPDIF (0 << 3) 210 # define AIP_CLKSEL_AIP_I2S (1 << 3) 211 # define AIP_CLKSEL_FS_ACLK (0 << 0) 212 # define AIP_CLKSEL_FS_MCLK (1 << 0) 213 # define AIP_CLKSEL_FS_FS64SPDIF (2 << 0) 214 215 /* Page 02h: PLL settings */ 216 #define REG_PLL_SERIAL_1 REG(0x02, 0x00) /* read/write */ 217 # define PLL_SERIAL_1_SRL_FDN (1 << 0) 218 # define PLL_SERIAL_1_SRL_IZ(x) (((x) & 3) << 1) 219 # define PLL_SERIAL_1_SRL_MAN_IZ (1 << 6) 220 #define REG_PLL_SERIAL_2 REG(0x02, 0x01) /* read/write */ 221 # define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0) 222 # define PLL_SERIAL_2_SRL_PR(x) (((x) & 0xf) << 4) 223 #define REG_PLL_SERIAL_3 REG(0x02, 0x02) /* read/write */ 224 # define PLL_SERIAL_3_SRL_CCIR (1 << 0) 225 # define PLL_SERIAL_3_SRL_DE (1 << 2) 226 # define PLL_SERIAL_3_SRL_PXIN_SEL (1 << 4) 227 #define REG_SERIALIZER REG(0x02, 0x03) /* read/write */ 228 #define REG_BUFFER_OUT REG(0x02, 0x04) /* read/write */ 229 #define REG_PLL_SCG1 REG(0x02, 0x05) /* read/write */ 230 #define REG_PLL_SCG2 REG(0x02, 0x06) /* read/write */ 231 #define REG_PLL_SCGN1 REG(0x02, 0x07) /* read/write */ 232 #define REG_PLL_SCGN2 REG(0x02, 0x08) /* read/write */ 233 #define REG_PLL_SCGR1 REG(0x02, 0x09) /* read/write */ 234 #define REG_PLL_SCGR2 REG(0x02, 0x0a) /* read/write */ 235 #define REG_AUDIO_DIV REG(0x02, 0x0e) /* read/write */ 236 # define AUDIO_DIV_SERCLK_1 0 237 # define AUDIO_DIV_SERCLK_2 1 238 # define AUDIO_DIV_SERCLK_4 2 239 # define AUDIO_DIV_SERCLK_8 3 240 # define AUDIO_DIV_SERCLK_16 4 241 # define AUDIO_DIV_SERCLK_32 5 242 #define REG_SEL_CLK REG(0x02, 0x11) /* read/write */ 243 # define SEL_CLK_SEL_CLK1 (1 << 0) 244 # define SEL_CLK_SEL_VRF_CLK(x) (((x) & 3) << 1) 245 # define SEL_CLK_ENA_SC_CLK (1 << 3) 246 #define REG_ANA_GENERAL REG(0x02, 0x12) /* read/write */ 247 248 249 /* Page 09h: EDID Control */ 250 #define REG_EDID_DATA_0 REG(0x09, 0x00) /* read */ 251 /* next 127 successive registers are the EDID block */ 252 #define REG_EDID_CTRL REG(0x09, 0xfa) /* read/write */ 253 #define REG_DDC_ADDR REG(0x09, 0xfb) /* read/write */ 254 #define REG_DDC_OFFS REG(0x09, 0xfc) /* read/write */ 255 #define REG_DDC_SEGM_ADDR REG(0x09, 0xfd) /* read/write */ 256 #define REG_DDC_SEGM REG(0x09, 0xfe) /* read/write */ 257 258 259 /* Page 10h: information frames and packets */ 260 #define REG_IF1_HB0 REG(0x10, 0x20) /* read/write */ 261 #define REG_IF2_HB0 REG(0x10, 0x40) /* read/write */ 262 #define REG_IF3_HB0 REG(0x10, 0x60) /* read/write */ 263 #define REG_IF4_HB0 REG(0x10, 0x80) /* read/write */ 264 #define REG_IF5_HB0 REG(0x10, 0xa0) /* read/write */ 265 266 267 /* Page 11h: audio settings and content info packets */ 268 #define REG_AIP_CNTRL_0 REG(0x11, 0x00) /* read/write */ 269 # define AIP_CNTRL_0_RST_FIFO (1 << 0) 270 # define AIP_CNTRL_0_SWAP (1 << 1) 271 # define AIP_CNTRL_0_LAYOUT (1 << 2) 272 # define AIP_CNTRL_0_ACR_MAN (1 << 5) 273 # define AIP_CNTRL_0_RST_CTS (1 << 6) 274 #define REG_CA_I2S REG(0x11, 0x01) /* read/write */ 275 # define CA_I2S_CA_I2S(x) (((x) & 31) << 0) 276 # define CA_I2S_HBR_CHSTAT (1 << 6) 277 #define REG_LATENCY_RD REG(0x11, 0x04) /* read/write */ 278 #define REG_ACR_CTS_0 REG(0x11, 0x05) /* read/write */ 279 #define REG_ACR_CTS_1 REG(0x11, 0x06) /* read/write */ 280 #define REG_ACR_CTS_2 REG(0x11, 0x07) /* read/write */ 281 #define REG_ACR_N_0 REG(0x11, 0x08) /* read/write */ 282 #define REG_ACR_N_1 REG(0x11, 0x09) /* read/write */ 283 #define REG_ACR_N_2 REG(0x11, 0x0a) /* read/write */ 284 #define REG_CTS_N REG(0x11, 0x0c) /* read/write */ 285 # define CTS_N_K(x) (((x) & 7) << 0) 286 # define CTS_N_M(x) (((x) & 3) << 4) 287 #define REG_ENC_CNTRL REG(0x11, 0x0d) /* read/write */ 288 # define ENC_CNTRL_RST_ENC (1 << 0) 289 # define ENC_CNTRL_RST_SEL (1 << 1) 290 # define ENC_CNTRL_CTL_CODE(x) (((x) & 3) << 2) 291 #define REG_DIP_FLAGS REG(0x11, 0x0e) /* read/write */ 292 # define DIP_FLAGS_ACR (1 << 0) 293 # define DIP_FLAGS_GC (1 << 1) 294 #define REG_DIP_IF_FLAGS REG(0x11, 0x0f) /* read/write */ 295 # define DIP_IF_FLAGS_IF1 (1 << 1) 296 # define DIP_IF_FLAGS_IF2 (1 << 2) 297 # define DIP_IF_FLAGS_IF3 (1 << 3) 298 # define DIP_IF_FLAGS_IF4 (1 << 4) 299 # define DIP_IF_FLAGS_IF5 (1 << 5) 300 #define REG_CH_STAT_B(x) REG(0x11, 0x14 + (x)) /* read/write */ 301 302 303 /* Page 12h: HDCP and OTP */ 304 #define REG_TX3 REG(0x12, 0x9a) /* read/write */ 305 #define REG_TX4 REG(0x12, 0x9b) /* read/write */ 306 # define TX4_PD_RAM (1 << 1) 307 #define REG_TX33 REG(0x12, 0xb8) /* read/write */ 308 # define TX33_HDMI (1 << 1) 309 310 311 /* Page 13h: Gamut related metadata packets */ 312 313 314 315 /* CEC registers: (not paged) 316 */ 317 #define REG_CEC_INTSTATUS 0xee /* read */ 318 # define CEC_INTSTATUS_CEC (1 << 0) 319 # define CEC_INTSTATUS_HDMI (1 << 1) 320 #define REG_CEC_FRO_IM_CLK_CTRL 0xfb /* read/write */ 321 # define CEC_FRO_IM_CLK_CTRL_GHOST_DIS (1 << 7) 322 # define CEC_FRO_IM_CLK_CTRL_ENA_OTP (1 << 6) 323 # define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL (1 << 1) 324 # define CEC_FRO_IM_CLK_CTRL_FRO_DIV (1 << 0) 325 #define REG_CEC_RXSHPDINTENA 0xfc /* read/write */ 326 #define REG_CEC_RXSHPDINT 0xfd /* read */ 327 #define REG_CEC_RXSHPDLEV 0xfe /* read */ 328 # define CEC_RXSHPDLEV_RXSENS (1 << 0) 329 # define CEC_RXSHPDLEV_HPD (1 << 1) 330 331 #define REG_CEC_ENAMODS 0xff /* read/write */ 332 # define CEC_ENAMODS_DIS_FRO (1 << 6) 333 # define CEC_ENAMODS_DIS_CCLK (1 << 5) 334 # define CEC_ENAMODS_EN_RXSENS (1 << 2) 335 # define CEC_ENAMODS_EN_HDMI (1 << 1) 336 # define CEC_ENAMODS_EN_CEC (1 << 0) 337 338 339 /* Device versions: */ 340 #define TDA9989N2 0x0101 341 #define TDA19989 0x0201 342 #define TDA19989N2 0x0202 343 #define TDA19988 0x0301 344 345 static void 346 cec_write(struct tda998x_priv *priv, uint16_t addr, uint8_t val) 347 { 348 struct i2c_client *client = priv->cec; 349 uint8_t buf[] = {addr, val}; 350 int ret; 351 352 ret = i2c_master_send(client, buf, sizeof(buf)); 353 if (ret < 0) 354 dev_err(&client->dev, "Error %d writing to cec:0x%x\n", ret, addr); 355 } 356 357 static uint8_t 358 cec_read(struct tda998x_priv *priv, uint8_t addr) 359 { 360 struct i2c_client *client = priv->cec; 361 uint8_t val; 362 int ret; 363 364 ret = i2c_master_send(client, &addr, sizeof(addr)); 365 if (ret < 0) 366 goto fail; 367 368 ret = i2c_master_recv(client, &val, sizeof(val)); 369 if (ret < 0) 370 goto fail; 371 372 return val; 373 374 fail: 375 dev_err(&client->dev, "Error %d reading from cec:0x%x\n", ret, addr); 376 return 0; 377 } 378 379 static int 380 set_page(struct tda998x_priv *priv, uint16_t reg) 381 { 382 if (REG2PAGE(reg) != priv->current_page) { 383 struct i2c_client *client = priv->hdmi; 384 uint8_t buf[] = { 385 REG_CURPAGE, REG2PAGE(reg) 386 }; 387 int ret = i2c_master_send(client, buf, sizeof(buf)); 388 if (ret < 0) { 389 dev_err(&client->dev, "setpage %04x err %d\n", 390 reg, ret); 391 return ret; 392 } 393 394 priv->current_page = REG2PAGE(reg); 395 } 396 return 0; 397 } 398 399 static int 400 reg_read_range(struct tda998x_priv *priv, uint16_t reg, char *buf, int cnt) 401 { 402 struct i2c_client *client = priv->hdmi; 403 uint8_t addr = REG2ADDR(reg); 404 int ret; 405 406 ret = set_page(priv, reg); 407 if (ret < 0) 408 return ret; 409 410 ret = i2c_master_send(client, &addr, sizeof(addr)); 411 if (ret < 0) 412 goto fail; 413 414 ret = i2c_master_recv(client, buf, cnt); 415 if (ret < 0) 416 goto fail; 417 418 return ret; 419 420 fail: 421 dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg); 422 return ret; 423 } 424 425 static void 426 reg_write_range(struct tda998x_priv *priv, uint16_t reg, uint8_t *p, int cnt) 427 { 428 struct i2c_client *client = priv->hdmi; 429 uint8_t buf[cnt+1]; 430 int ret; 431 432 buf[0] = REG2ADDR(reg); 433 memcpy(&buf[1], p, cnt); 434 435 ret = set_page(priv, reg); 436 if (ret < 0) 437 return; 438 439 ret = i2c_master_send(client, buf, cnt + 1); 440 if (ret < 0) 441 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg); 442 } 443 444 static int 445 reg_read(struct tda998x_priv *priv, uint16_t reg) 446 { 447 uint8_t val = 0; 448 int ret; 449 450 ret = reg_read_range(priv, reg, &val, sizeof(val)); 451 if (ret < 0) 452 return ret; 453 return val; 454 } 455 456 static void 457 reg_write(struct tda998x_priv *priv, uint16_t reg, uint8_t val) 458 { 459 struct i2c_client *client = priv->hdmi; 460 uint8_t buf[] = {REG2ADDR(reg), val}; 461 int ret; 462 463 ret = set_page(priv, reg); 464 if (ret < 0) 465 return; 466 467 ret = i2c_master_send(client, buf, sizeof(buf)); 468 if (ret < 0) 469 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg); 470 } 471 472 static void 473 reg_write16(struct tda998x_priv *priv, uint16_t reg, uint16_t val) 474 { 475 struct i2c_client *client = priv->hdmi; 476 uint8_t buf[] = {REG2ADDR(reg), val >> 8, val}; 477 int ret; 478 479 ret = set_page(priv, reg); 480 if (ret < 0) 481 return; 482 483 ret = i2c_master_send(client, buf, sizeof(buf)); 484 if (ret < 0) 485 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg); 486 } 487 488 static void 489 reg_set(struct tda998x_priv *priv, uint16_t reg, uint8_t val) 490 { 491 int old_val; 492 493 old_val = reg_read(priv, reg); 494 if (old_val >= 0) 495 reg_write(priv, reg, old_val | val); 496 } 497 498 static void 499 reg_clear(struct tda998x_priv *priv, uint16_t reg, uint8_t val) 500 { 501 int old_val; 502 503 old_val = reg_read(priv, reg); 504 if (old_val >= 0) 505 reg_write(priv, reg, old_val & ~val); 506 } 507 508 static void 509 tda998x_reset(struct tda998x_priv *priv) 510 { 511 /* reset audio and i2c master: */ 512 reg_write(priv, REG_SOFTRESET, SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER); 513 msleep(50); 514 reg_write(priv, REG_SOFTRESET, 0); 515 msleep(50); 516 517 /* reset transmitter: */ 518 reg_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR); 519 reg_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR); 520 521 /* PLL registers common configuration */ 522 reg_write(priv, REG_PLL_SERIAL_1, 0x00); 523 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(1)); 524 reg_write(priv, REG_PLL_SERIAL_3, 0x00); 525 reg_write(priv, REG_SERIALIZER, 0x00); 526 reg_write(priv, REG_BUFFER_OUT, 0x00); 527 reg_write(priv, REG_PLL_SCG1, 0x00); 528 reg_write(priv, REG_AUDIO_DIV, AUDIO_DIV_SERCLK_8); 529 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK); 530 reg_write(priv, REG_PLL_SCGN1, 0xfa); 531 reg_write(priv, REG_PLL_SCGN2, 0x00); 532 reg_write(priv, REG_PLL_SCGR1, 0x5b); 533 reg_write(priv, REG_PLL_SCGR2, 0x00); 534 reg_write(priv, REG_PLL_SCG2, 0x10); 535 536 /* Write the default value MUX register */ 537 reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24); 538 } 539 540 /* 541 * only 2 interrupts may occur: screen plug/unplug and EDID read 542 */ 543 static irqreturn_t tda998x_irq_thread(int irq, void *data) 544 { 545 struct tda998x_priv *priv = data; 546 u8 sta, cec, lvl, flag0, flag1, flag2; 547 548 if (!priv) 549 return IRQ_HANDLED; 550 sta = cec_read(priv, REG_CEC_INTSTATUS); 551 cec = cec_read(priv, REG_CEC_RXSHPDINT); 552 lvl = cec_read(priv, REG_CEC_RXSHPDLEV); 553 flag0 = reg_read(priv, REG_INT_FLAGS_0); 554 flag1 = reg_read(priv, REG_INT_FLAGS_1); 555 flag2 = reg_read(priv, REG_INT_FLAGS_2); 556 DRM_DEBUG_DRIVER( 557 "tda irq sta %02x cec %02x lvl %02x f0 %02x f1 %02x f2 %02x\n", 558 sta, cec, lvl, flag0, flag1, flag2); 559 if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) { 560 priv->wq_edid_wait = 0; 561 wake_up(&priv->wq_edid); 562 } else if (cec != 0) { /* HPD change */ 563 if (priv->encoder && priv->encoder->dev) 564 drm_helper_hpd_irq_event(priv->encoder->dev); 565 } 566 return IRQ_HANDLED; 567 } 568 569 static uint8_t tda998x_cksum(uint8_t *buf, size_t bytes) 570 { 571 int sum = 0; 572 573 while (bytes--) 574 sum -= *buf++; 575 return sum; 576 } 577 578 #define HB(x) (x) 579 #define PB(x) (HB(2) + 1 + (x)) 580 581 static void 582 tda998x_write_if(struct tda998x_priv *priv, uint8_t bit, uint16_t addr, 583 uint8_t *buf, size_t size) 584 { 585 buf[PB(0)] = tda998x_cksum(buf, size); 586 587 reg_clear(priv, REG_DIP_IF_FLAGS, bit); 588 reg_write_range(priv, addr, buf, size); 589 reg_set(priv, REG_DIP_IF_FLAGS, bit); 590 } 591 592 static void 593 tda998x_write_aif(struct tda998x_priv *priv, struct tda998x_encoder_params *p) 594 { 595 u8 buf[PB(HDMI_AUDIO_INFOFRAME_SIZE) + 1]; 596 597 memset(buf, 0, sizeof(buf)); 598 buf[HB(0)] = HDMI_INFOFRAME_TYPE_AUDIO; 599 buf[HB(1)] = 0x01; 600 buf[HB(2)] = HDMI_AUDIO_INFOFRAME_SIZE; 601 buf[PB(1)] = p->audio_frame[1] & 0x07; /* CC */ 602 buf[PB(2)] = p->audio_frame[2] & 0x1c; /* SF */ 603 buf[PB(4)] = p->audio_frame[4]; 604 buf[PB(5)] = p->audio_frame[5] & 0xf8; /* DM_INH + LSV */ 605 606 tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, buf, 607 sizeof(buf)); 608 } 609 610 static void 611 tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode) 612 { 613 u8 buf[PB(HDMI_AVI_INFOFRAME_SIZE) + 1]; 614 615 memset(buf, 0, sizeof(buf)); 616 buf[HB(0)] = HDMI_INFOFRAME_TYPE_AVI; 617 buf[HB(1)] = 0x02; 618 buf[HB(2)] = HDMI_AVI_INFOFRAME_SIZE; 619 buf[PB(1)] = HDMI_SCAN_MODE_UNDERSCAN; 620 buf[PB(2)] = HDMI_ACTIVE_ASPECT_PICTURE; 621 buf[PB(3)] = HDMI_QUANTIZATION_RANGE_FULL << 2; 622 buf[PB(4)] = drm_match_cea_mode(mode); 623 624 tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, buf, 625 sizeof(buf)); 626 } 627 628 static void tda998x_audio_mute(struct tda998x_priv *priv, bool on) 629 { 630 if (on) { 631 reg_set(priv, REG_SOFTRESET, SOFTRESET_AUDIO); 632 reg_clear(priv, REG_SOFTRESET, SOFTRESET_AUDIO); 633 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO); 634 } else { 635 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO); 636 } 637 } 638 639 static void 640 tda998x_configure_audio(struct tda998x_priv *priv, 641 struct drm_display_mode *mode, struct tda998x_encoder_params *p) 642 { 643 uint8_t buf[6], clksel_aip, clksel_fs, cts_n, adiv; 644 uint32_t n; 645 646 /* Enable audio ports */ 647 reg_write(priv, REG_ENA_AP, p->audio_cfg); 648 reg_write(priv, REG_ENA_ACLK, p->audio_clk_cfg); 649 650 /* Set audio input source */ 651 switch (p->audio_format) { 652 case AFMT_SPDIF: 653 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF); 654 clksel_aip = AIP_CLKSEL_AIP_SPDIF; 655 clksel_fs = AIP_CLKSEL_FS_FS64SPDIF; 656 cts_n = CTS_N_M(3) | CTS_N_K(3); 657 break; 658 659 case AFMT_I2S: 660 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S); 661 clksel_aip = AIP_CLKSEL_AIP_I2S; 662 clksel_fs = AIP_CLKSEL_FS_ACLK; 663 cts_n = CTS_N_M(3) | CTS_N_K(3); 664 break; 665 666 default: 667 BUG(); 668 return; 669 } 670 671 reg_write(priv, REG_AIP_CLKSEL, clksel_aip); 672 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT | 673 AIP_CNTRL_0_ACR_MAN); /* auto CTS */ 674 reg_write(priv, REG_CTS_N, cts_n); 675 676 /* 677 * Audio input somehow depends on HDMI line rate which is 678 * related to pixclk. Testing showed that modes with pixclk 679 * >100MHz need a larger divider while <40MHz need the default. 680 * There is no detailed info in the datasheet, so we just 681 * assume 100MHz requires larger divider. 682 */ 683 adiv = AUDIO_DIV_SERCLK_8; 684 if (mode->clock > 100000) 685 adiv++; /* AUDIO_DIV_SERCLK_16 */ 686 687 /* S/PDIF asks for a larger divider */ 688 if (p->audio_format == AFMT_SPDIF) 689 adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */ 690 691 reg_write(priv, REG_AUDIO_DIV, adiv); 692 693 /* 694 * This is the approximate value of N, which happens to be 695 * the recommended values for non-coherent clocks. 696 */ 697 n = 128 * p->audio_sample_rate / 1000; 698 699 /* Write the CTS and N values */ 700 buf[0] = 0x44; 701 buf[1] = 0x42; 702 buf[2] = 0x01; 703 buf[3] = n; 704 buf[4] = n >> 8; 705 buf[5] = n >> 16; 706 reg_write_range(priv, REG_ACR_CTS_0, buf, 6); 707 708 /* Set CTS clock reference */ 709 reg_write(priv, REG_AIP_CLKSEL, clksel_aip | clksel_fs); 710 711 /* Reset CTS generator */ 712 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS); 713 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS); 714 715 /* Write the channel status */ 716 buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT; 717 buf[1] = 0x00; 718 buf[2] = IEC958_AES3_CON_FS_NOTID; 719 buf[3] = IEC958_AES4_CON_ORIGFS_NOTID | 720 IEC958_AES4_CON_MAX_WORDLEN_24; 721 reg_write_range(priv, REG_CH_STAT_B(0), buf, 4); 722 723 tda998x_audio_mute(priv, true); 724 msleep(20); 725 tda998x_audio_mute(priv, false); 726 727 /* Write the audio information packet */ 728 tda998x_write_aif(priv, p); 729 } 730 731 /* DRM encoder functions */ 732 733 static void 734 tda998x_encoder_set_config(struct drm_encoder *encoder, void *params) 735 { 736 struct tda998x_priv *priv = to_tda998x_priv(encoder); 737 struct tda998x_encoder_params *p = params; 738 739 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) | 740 (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) | 741 VIP_CNTRL_0_SWAP_B(p->swap_b) | 742 (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0); 743 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) | 744 (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) | 745 VIP_CNTRL_1_SWAP_D(p->swap_d) | 746 (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0); 747 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) | 748 (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) | 749 VIP_CNTRL_2_SWAP_F(p->swap_f) | 750 (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0); 751 752 priv->params = *p; 753 } 754 755 static void 756 tda998x_encoder_dpms(struct drm_encoder *encoder, int mode) 757 { 758 struct tda998x_priv *priv = to_tda998x_priv(encoder); 759 760 /* we only care about on or off: */ 761 if (mode != DRM_MODE_DPMS_ON) 762 mode = DRM_MODE_DPMS_OFF; 763 764 if (mode == priv->dpms) 765 return; 766 767 switch (mode) { 768 case DRM_MODE_DPMS_ON: 769 /* enable video ports, audio will be enabled later */ 770 reg_write(priv, REG_ENA_VP_0, 0xff); 771 reg_write(priv, REG_ENA_VP_1, 0xff); 772 reg_write(priv, REG_ENA_VP_2, 0xff); 773 /* set muxing after enabling ports: */ 774 reg_write(priv, REG_VIP_CNTRL_0, priv->vip_cntrl_0); 775 reg_write(priv, REG_VIP_CNTRL_1, priv->vip_cntrl_1); 776 reg_write(priv, REG_VIP_CNTRL_2, priv->vip_cntrl_2); 777 break; 778 case DRM_MODE_DPMS_OFF: 779 /* disable video ports */ 780 reg_write(priv, REG_ENA_VP_0, 0x00); 781 reg_write(priv, REG_ENA_VP_1, 0x00); 782 reg_write(priv, REG_ENA_VP_2, 0x00); 783 break; 784 } 785 786 priv->dpms = mode; 787 } 788 789 static void 790 tda998x_encoder_save(struct drm_encoder *encoder) 791 { 792 DBG(""); 793 } 794 795 static void 796 tda998x_encoder_restore(struct drm_encoder *encoder) 797 { 798 DBG(""); 799 } 800 801 static bool 802 tda998x_encoder_mode_fixup(struct drm_encoder *encoder, 803 const struct drm_display_mode *mode, 804 struct drm_display_mode *adjusted_mode) 805 { 806 return true; 807 } 808 809 static int 810 tda998x_encoder_mode_valid(struct drm_encoder *encoder, 811 struct drm_display_mode *mode) 812 { 813 if (mode->clock > 150000) 814 return MODE_CLOCK_HIGH; 815 if (mode->htotal >= BIT(13)) 816 return MODE_BAD_HVALUE; 817 if (mode->vtotal >= BIT(11)) 818 return MODE_BAD_VVALUE; 819 return MODE_OK; 820 } 821 822 static void 823 tda998x_encoder_mode_set(struct drm_encoder *encoder, 824 struct drm_display_mode *mode, 825 struct drm_display_mode *adjusted_mode) 826 { 827 struct tda998x_priv *priv = to_tda998x_priv(encoder); 828 uint16_t ref_pix, ref_line, n_pix, n_line; 829 uint16_t hs_pix_s, hs_pix_e; 830 uint16_t vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e; 831 uint16_t vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e; 832 uint16_t vwin1_line_s, vwin1_line_e; 833 uint16_t vwin2_line_s, vwin2_line_e; 834 uint16_t de_pix_s, de_pix_e; 835 uint8_t reg, div, rep; 836 837 /* 838 * Internally TDA998x is using ITU-R BT.656 style sync but 839 * we get VESA style sync. TDA998x is using a reference pixel 840 * relative to ITU to sync to the input frame and for output 841 * sync generation. Currently, we are using reference detection 842 * from HS/VS, i.e. REFPIX/REFLINE denote frame start sync point 843 * which is position of rising VS with coincident rising HS. 844 * 845 * Now there is some issues to take care of: 846 * - HDMI data islands require sync-before-active 847 * - TDA998x register values must be > 0 to be enabled 848 * - REFLINE needs an additional offset of +1 849 * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB 850 * 851 * So we add +1 to all horizontal and vertical register values, 852 * plus an additional +3 for REFPIX as we are using RGB input only. 853 */ 854 n_pix = mode->htotal; 855 n_line = mode->vtotal; 856 857 hs_pix_e = mode->hsync_end - mode->hdisplay; 858 hs_pix_s = mode->hsync_start - mode->hdisplay; 859 de_pix_e = mode->htotal; 860 de_pix_s = mode->htotal - mode->hdisplay; 861 ref_pix = 3 + hs_pix_s; 862 863 /* 864 * Attached LCD controllers may generate broken sync. Allow 865 * those to adjust the position of the rising VS edge by adding 866 * HSKEW to ref_pix. 867 */ 868 if (adjusted_mode->flags & DRM_MODE_FLAG_HSKEW) 869 ref_pix += adjusted_mode->hskew; 870 871 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0) { 872 ref_line = 1 + mode->vsync_start - mode->vdisplay; 873 vwin1_line_s = mode->vtotal - mode->vdisplay - 1; 874 vwin1_line_e = vwin1_line_s + mode->vdisplay; 875 vs1_pix_s = vs1_pix_e = hs_pix_s; 876 vs1_line_s = mode->vsync_start - mode->vdisplay; 877 vs1_line_e = vs1_line_s + 878 mode->vsync_end - mode->vsync_start; 879 vwin2_line_s = vwin2_line_e = 0; 880 vs2_pix_s = vs2_pix_e = 0; 881 vs2_line_s = vs2_line_e = 0; 882 } else { 883 ref_line = 1 + (mode->vsync_start - mode->vdisplay)/2; 884 vwin1_line_s = (mode->vtotal - mode->vdisplay)/2; 885 vwin1_line_e = vwin1_line_s + mode->vdisplay/2; 886 vs1_pix_s = vs1_pix_e = hs_pix_s; 887 vs1_line_s = (mode->vsync_start - mode->vdisplay)/2; 888 vs1_line_e = vs1_line_s + 889 (mode->vsync_end - mode->vsync_start)/2; 890 vwin2_line_s = vwin1_line_s + mode->vtotal/2; 891 vwin2_line_e = vwin2_line_s + mode->vdisplay/2; 892 vs2_pix_s = vs2_pix_e = hs_pix_s + mode->htotal/2; 893 vs2_line_s = vs1_line_s + mode->vtotal/2 ; 894 vs2_line_e = vs2_line_s + 895 (mode->vsync_end - mode->vsync_start)/2; 896 } 897 898 div = 148500 / mode->clock; 899 if (div != 0) { 900 div--; 901 if (div > 3) 902 div = 3; 903 } 904 905 /* mute the audio FIFO: */ 906 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO); 907 908 /* set HDMI HDCP mode off: */ 909 reg_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS); 910 reg_clear(priv, REG_TX33, TX33_HDMI); 911 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0)); 912 913 /* no pre-filter or interpolator: */ 914 reg_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) | 915 HVF_CNTRL_0_INTPOL(0)); 916 reg_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0)); 917 reg_write(priv, REG_VIP_CNTRL_4, VIP_CNTRL_4_BLANKIT(0) | 918 VIP_CNTRL_4_BLC(0)); 919 920 reg_clear(priv, REG_PLL_SERIAL_1, PLL_SERIAL_1_SRL_MAN_IZ); 921 reg_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR | 922 PLL_SERIAL_3_SRL_DE); 923 reg_write(priv, REG_SERIALIZER, 0); 924 reg_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0)); 925 926 /* TODO enable pixel repeat for pixel rates less than 25Msamp/s */ 927 rep = 0; 928 reg_write(priv, REG_RPT_CNTRL, 0); 929 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_VRF_CLK(0) | 930 SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK); 931 932 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) | 933 PLL_SERIAL_2_SRL_PR(rep)); 934 935 /* set color matrix bypass flag: */ 936 reg_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP | 937 MAT_CONTRL_MAT_SC(1)); 938 939 /* set BIAS tmds value: */ 940 reg_write(priv, REG_ANA_GENERAL, 0x09); 941 942 /* 943 * Sync on rising HSYNC/VSYNC 944 */ 945 reg = VIP_CNTRL_3_SYNC_HS; 946 947 /* 948 * TDA19988 requires high-active sync at input stage, 949 * so invert low-active sync provided by master encoder here 950 */ 951 if (mode->flags & DRM_MODE_FLAG_NHSYNC) 952 reg |= VIP_CNTRL_3_H_TGL; 953 if (mode->flags & DRM_MODE_FLAG_NVSYNC) 954 reg |= VIP_CNTRL_3_V_TGL; 955 reg_write(priv, REG_VIP_CNTRL_3, reg); 956 957 reg_write(priv, REG_VIDFORMAT, 0x00); 958 reg_write16(priv, REG_REFPIX_MSB, ref_pix); 959 reg_write16(priv, REG_REFLINE_MSB, ref_line); 960 reg_write16(priv, REG_NPIX_MSB, n_pix); 961 reg_write16(priv, REG_NLINE_MSB, n_line); 962 reg_write16(priv, REG_VS_LINE_STRT_1_MSB, vs1_line_s); 963 reg_write16(priv, REG_VS_PIX_STRT_1_MSB, vs1_pix_s); 964 reg_write16(priv, REG_VS_LINE_END_1_MSB, vs1_line_e); 965 reg_write16(priv, REG_VS_PIX_END_1_MSB, vs1_pix_e); 966 reg_write16(priv, REG_VS_LINE_STRT_2_MSB, vs2_line_s); 967 reg_write16(priv, REG_VS_PIX_STRT_2_MSB, vs2_pix_s); 968 reg_write16(priv, REG_VS_LINE_END_2_MSB, vs2_line_e); 969 reg_write16(priv, REG_VS_PIX_END_2_MSB, vs2_pix_e); 970 reg_write16(priv, REG_HS_PIX_START_MSB, hs_pix_s); 971 reg_write16(priv, REG_HS_PIX_STOP_MSB, hs_pix_e); 972 reg_write16(priv, REG_VWIN_START_1_MSB, vwin1_line_s); 973 reg_write16(priv, REG_VWIN_END_1_MSB, vwin1_line_e); 974 reg_write16(priv, REG_VWIN_START_2_MSB, vwin2_line_s); 975 reg_write16(priv, REG_VWIN_END_2_MSB, vwin2_line_e); 976 reg_write16(priv, REG_DE_START_MSB, de_pix_s); 977 reg_write16(priv, REG_DE_STOP_MSB, de_pix_e); 978 979 if (priv->rev == TDA19988) { 980 /* let incoming pixels fill the active space (if any) */ 981 reg_write(priv, REG_ENABLE_SPACE, 0x00); 982 } 983 984 /* 985 * Always generate sync polarity relative to input sync and 986 * revert input stage toggled sync at output stage 987 */ 988 reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN; 989 if (mode->flags & DRM_MODE_FLAG_NHSYNC) 990 reg |= TBG_CNTRL_1_H_TGL; 991 if (mode->flags & DRM_MODE_FLAG_NVSYNC) 992 reg |= TBG_CNTRL_1_V_TGL; 993 reg_write(priv, REG_TBG_CNTRL_1, reg); 994 995 /* must be last register set: */ 996 reg_write(priv, REG_TBG_CNTRL_0, 0); 997 998 /* Only setup the info frames if the sink is HDMI */ 999 if (priv->is_hdmi_sink) { 1000 /* We need to turn HDMI HDCP stuff on to get audio through */ 1001 reg &= ~TBG_CNTRL_1_DWIN_DIS; 1002 reg_write(priv, REG_TBG_CNTRL_1, reg); 1003 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1)); 1004 reg_set(priv, REG_TX33, TX33_HDMI); 1005 1006 tda998x_write_avi(priv, adjusted_mode); 1007 1008 if (priv->params.audio_cfg) 1009 tda998x_configure_audio(priv, adjusted_mode, 1010 &priv->params); 1011 } 1012 } 1013 1014 static enum drm_connector_status 1015 tda998x_encoder_detect(struct drm_encoder *encoder, 1016 struct drm_connector *connector) 1017 { 1018 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1019 uint8_t val = cec_read(priv, REG_CEC_RXSHPDLEV); 1020 1021 return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected : 1022 connector_status_disconnected; 1023 } 1024 1025 static int 1026 read_edid_block(struct drm_encoder *encoder, uint8_t *buf, int blk) 1027 { 1028 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1029 uint8_t offset, segptr; 1030 int ret, i; 1031 1032 offset = (blk & 1) ? 128 : 0; 1033 segptr = blk / 2; 1034 1035 reg_write(priv, REG_DDC_ADDR, 0xa0); 1036 reg_write(priv, REG_DDC_OFFS, offset); 1037 reg_write(priv, REG_DDC_SEGM_ADDR, 0x60); 1038 reg_write(priv, REG_DDC_SEGM, segptr); 1039 1040 /* enable reading EDID: */ 1041 priv->wq_edid_wait = 1; 1042 reg_write(priv, REG_EDID_CTRL, 0x1); 1043 1044 /* flag must be cleared by sw: */ 1045 reg_write(priv, REG_EDID_CTRL, 0x0); 1046 1047 /* wait for block read to complete: */ 1048 if (priv->hdmi->irq) { 1049 i = wait_event_timeout(priv->wq_edid, 1050 !priv->wq_edid_wait, 1051 msecs_to_jiffies(100)); 1052 if (i < 0) { 1053 dev_err(&priv->hdmi->dev, "read edid wait err %d\n", i); 1054 return i; 1055 } 1056 } else { 1057 for (i = 100; i > 0; i--) { 1058 msleep(1); 1059 ret = reg_read(priv, REG_INT_FLAGS_2); 1060 if (ret < 0) 1061 return ret; 1062 if (ret & INT_FLAGS_2_EDID_BLK_RD) 1063 break; 1064 } 1065 } 1066 1067 if (i == 0) { 1068 dev_err(&priv->hdmi->dev, "read edid timeout\n"); 1069 return -ETIMEDOUT; 1070 } 1071 1072 ret = reg_read_range(priv, REG_EDID_DATA_0, buf, EDID_LENGTH); 1073 if (ret != EDID_LENGTH) { 1074 dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n", 1075 blk, ret); 1076 return ret; 1077 } 1078 1079 return 0; 1080 } 1081 1082 static uint8_t * 1083 do_get_edid(struct drm_encoder *encoder) 1084 { 1085 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1086 int j, valid_extensions = 0; 1087 uint8_t *block, *new; 1088 bool print_bad_edid = drm_debug & DRM_UT_KMS; 1089 1090 if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) 1091 return NULL; 1092 1093 if (priv->rev == TDA19988) 1094 reg_clear(priv, REG_TX4, TX4_PD_RAM); 1095 1096 /* base block fetch */ 1097 if (read_edid_block(encoder, block, 0)) 1098 goto fail; 1099 1100 if (!drm_edid_block_valid(block, 0, print_bad_edid)) 1101 goto fail; 1102 1103 /* if there's no extensions, we're done */ 1104 if (block[0x7e] == 0) 1105 goto done; 1106 1107 new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL); 1108 if (!new) 1109 goto fail; 1110 block = new; 1111 1112 for (j = 1; j <= block[0x7e]; j++) { 1113 uint8_t *ext_block = block + (valid_extensions + 1) * EDID_LENGTH; 1114 if (read_edid_block(encoder, ext_block, j)) 1115 goto fail; 1116 1117 if (!drm_edid_block_valid(ext_block, j, print_bad_edid)) 1118 goto fail; 1119 1120 valid_extensions++; 1121 } 1122 1123 if (valid_extensions != block[0x7e]) { 1124 block[EDID_LENGTH-1] += block[0x7e] - valid_extensions; 1125 block[0x7e] = valid_extensions; 1126 new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL); 1127 if (!new) 1128 goto fail; 1129 block = new; 1130 } 1131 1132 done: 1133 if (priv->rev == TDA19988) 1134 reg_set(priv, REG_TX4, TX4_PD_RAM); 1135 1136 return block; 1137 1138 fail: 1139 if (priv->rev == TDA19988) 1140 reg_set(priv, REG_TX4, TX4_PD_RAM); 1141 dev_warn(&priv->hdmi->dev, "failed to read EDID\n"); 1142 kfree(block); 1143 return NULL; 1144 } 1145 1146 static int 1147 tda998x_encoder_get_modes(struct drm_encoder *encoder, 1148 struct drm_connector *connector) 1149 { 1150 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1151 struct edid *edid = (struct edid *)do_get_edid(encoder); 1152 int n = 0; 1153 1154 if (edid) { 1155 drm_mode_connector_update_edid_property(connector, edid); 1156 n = drm_add_edid_modes(connector, edid); 1157 priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid); 1158 kfree(edid); 1159 } 1160 1161 return n; 1162 } 1163 1164 static int 1165 tda998x_encoder_create_resources(struct drm_encoder *encoder, 1166 struct drm_connector *connector) 1167 { 1168 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1169 1170 if (priv->hdmi->irq) 1171 connector->polled = DRM_CONNECTOR_POLL_HPD; 1172 else 1173 connector->polled = DRM_CONNECTOR_POLL_CONNECT | 1174 DRM_CONNECTOR_POLL_DISCONNECT; 1175 return 0; 1176 } 1177 1178 static int 1179 tda998x_encoder_set_property(struct drm_encoder *encoder, 1180 struct drm_connector *connector, 1181 struct drm_property *property, 1182 uint64_t val) 1183 { 1184 DBG(""); 1185 return 0; 1186 } 1187 1188 static void 1189 tda998x_encoder_destroy(struct drm_encoder *encoder) 1190 { 1191 struct tda998x_priv *priv = to_tda998x_priv(encoder); 1192 1193 /* disable all IRQs and free the IRQ handler */ 1194 cec_write(priv, REG_CEC_RXSHPDINTENA, 0); 1195 reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD); 1196 if (priv->hdmi->irq) 1197 free_irq(priv->hdmi->irq, priv); 1198 1199 if (priv->cec) 1200 i2c_unregister_device(priv->cec); 1201 drm_i2c_encoder_destroy(encoder); 1202 kfree(priv); 1203 } 1204 1205 static struct drm_encoder_slave_funcs tda998x_encoder_funcs = { 1206 .set_config = tda998x_encoder_set_config, 1207 .destroy = tda998x_encoder_destroy, 1208 .dpms = tda998x_encoder_dpms, 1209 .save = tda998x_encoder_save, 1210 .restore = tda998x_encoder_restore, 1211 .mode_fixup = tda998x_encoder_mode_fixup, 1212 .mode_valid = tda998x_encoder_mode_valid, 1213 .mode_set = tda998x_encoder_mode_set, 1214 .detect = tda998x_encoder_detect, 1215 .get_modes = tda998x_encoder_get_modes, 1216 .create_resources = tda998x_encoder_create_resources, 1217 .set_property = tda998x_encoder_set_property, 1218 }; 1219 1220 /* I2C driver functions */ 1221 1222 static int 1223 tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id) 1224 { 1225 return 0; 1226 } 1227 1228 static int 1229 tda998x_remove(struct i2c_client *client) 1230 { 1231 return 0; 1232 } 1233 1234 static int 1235 tda998x_encoder_init(struct i2c_client *client, 1236 struct drm_device *dev, 1237 struct drm_encoder_slave *encoder_slave) 1238 { 1239 struct tda998x_priv *priv; 1240 struct device_node *np = client->dev.of_node; 1241 u32 video; 1242 int rev_lo, rev_hi, ret; 1243 1244 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 1245 if (!priv) 1246 return -ENOMEM; 1247 1248 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3); 1249 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1); 1250 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5); 1251 1252 priv->current_page = 0xff; 1253 priv->hdmi = client; 1254 priv->cec = i2c_new_dummy(client->adapter, 0x34); 1255 if (!priv->cec) { 1256 kfree(priv); 1257 return -ENODEV; 1258 } 1259 1260 priv->encoder = &encoder_slave->base; 1261 priv->dpms = DRM_MODE_DPMS_OFF; 1262 1263 encoder_slave->slave_priv = priv; 1264 encoder_slave->slave_funcs = &tda998x_encoder_funcs; 1265 1266 /* wake up the device: */ 1267 cec_write(priv, REG_CEC_ENAMODS, 1268 CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI); 1269 1270 tda998x_reset(priv); 1271 1272 /* read version: */ 1273 rev_lo = reg_read(priv, REG_VERSION_LSB); 1274 rev_hi = reg_read(priv, REG_VERSION_MSB); 1275 if (rev_lo < 0 || rev_hi < 0) { 1276 ret = rev_lo < 0 ? rev_lo : rev_hi; 1277 goto fail; 1278 } 1279 1280 priv->rev = rev_lo | rev_hi << 8; 1281 1282 /* mask off feature bits: */ 1283 priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */ 1284 1285 switch (priv->rev) { 1286 case TDA9989N2: 1287 dev_info(&client->dev, "found TDA9989 n2"); 1288 break; 1289 case TDA19989: 1290 dev_info(&client->dev, "found TDA19989"); 1291 break; 1292 case TDA19989N2: 1293 dev_info(&client->dev, "found TDA19989 n2"); 1294 break; 1295 case TDA19988: 1296 dev_info(&client->dev, "found TDA19988"); 1297 break; 1298 default: 1299 dev_err(&client->dev, "found unsupported device: %04x\n", 1300 priv->rev); 1301 goto fail; 1302 } 1303 1304 /* after reset, enable DDC: */ 1305 reg_write(priv, REG_DDC_DISABLE, 0x00); 1306 1307 /* set clock on DDC channel: */ 1308 reg_write(priv, REG_TX3, 39); 1309 1310 /* if necessary, disable multi-master: */ 1311 if (priv->rev == TDA19989) 1312 reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM); 1313 1314 cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL, 1315 CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL); 1316 1317 /* initialize the optional IRQ */ 1318 if (client->irq) { 1319 int irqf_trigger; 1320 1321 /* init read EDID waitqueue */ 1322 init_waitqueue_head(&priv->wq_edid); 1323 1324 /* clear pending interrupts */ 1325 reg_read(priv, REG_INT_FLAGS_0); 1326 reg_read(priv, REG_INT_FLAGS_1); 1327 reg_read(priv, REG_INT_FLAGS_2); 1328 1329 irqf_trigger = 1330 irqd_get_trigger_type(irq_get_irq_data(client->irq)); 1331 ret = request_threaded_irq(client->irq, NULL, 1332 tda998x_irq_thread, 1333 irqf_trigger | IRQF_ONESHOT, 1334 "tda998x", priv); 1335 if (ret) { 1336 dev_err(&client->dev, 1337 "failed to request IRQ#%u: %d\n", 1338 client->irq, ret); 1339 goto fail; 1340 } 1341 1342 /* enable HPD irq */ 1343 cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD); 1344 } 1345 1346 /* enable EDID read irq: */ 1347 reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD); 1348 1349 if (!np) 1350 return 0; /* non-DT */ 1351 1352 /* get the optional video properties */ 1353 ret = of_property_read_u32(np, "video-ports", &video); 1354 if (ret == 0) { 1355 priv->vip_cntrl_0 = video >> 16; 1356 priv->vip_cntrl_1 = video >> 8; 1357 priv->vip_cntrl_2 = video; 1358 } 1359 1360 return 0; 1361 1362 fail: 1363 /* if encoder_init fails, the encoder slave is never registered, 1364 * so cleanup here: 1365 */ 1366 if (priv->cec) 1367 i2c_unregister_device(priv->cec); 1368 kfree(priv); 1369 encoder_slave->slave_priv = NULL; 1370 encoder_slave->slave_funcs = NULL; 1371 return -ENXIO; 1372 } 1373 1374 #ifdef CONFIG_OF 1375 static const struct of_device_id tda998x_dt_ids[] = { 1376 { .compatible = "nxp,tda998x", }, 1377 { } 1378 }; 1379 MODULE_DEVICE_TABLE(of, tda998x_dt_ids); 1380 #endif 1381 1382 static struct i2c_device_id tda998x_ids[] = { 1383 { "tda998x", 0 }, 1384 { } 1385 }; 1386 MODULE_DEVICE_TABLE(i2c, tda998x_ids); 1387 1388 static struct drm_i2c_encoder_driver tda998x_driver = { 1389 .i2c_driver = { 1390 .probe = tda998x_probe, 1391 .remove = tda998x_remove, 1392 .driver = { 1393 .name = "tda998x", 1394 .of_match_table = of_match_ptr(tda998x_dt_ids), 1395 }, 1396 .id_table = tda998x_ids, 1397 }, 1398 .encoder_init = tda998x_encoder_init, 1399 }; 1400 1401 /* Module initialization */ 1402 1403 static int __init 1404 tda998x_init(void) 1405 { 1406 DBG(""); 1407 return drm_i2c_encoder_register(THIS_MODULE, &tda998x_driver); 1408 } 1409 1410 static void __exit 1411 tda998x_exit(void) 1412 { 1413 DBG(""); 1414 drm_i2c_encoder_unregister(&tda998x_driver); 1415 } 1416 1417 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com"); 1418 MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder"); 1419 MODULE_LICENSE("GPL"); 1420 1421 module_init(tda998x_init); 1422 module_exit(tda998x_exit); 1423