Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Analog Devices ADV7511 HDMI transmitter driver |
| 3 | * |
| 4 | * Copyright 2012 Analog Devices Inc. |
| 5 | * |
| 6 | * Licensed under the GPL-2. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/device.h> |
| 10 | #include <linux/gpio/consumer.h> |
| 11 | #include <linux/i2c.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/regmap.h> |
| 14 | #include <linux/slab.h> |
| 15 | |
| 16 | #include <drm/drmP.h> |
| 17 | #include <drm/drm_crtc_helper.h> |
| 18 | #include <drm/drm_edid.h> |
| 19 | #include <drm/drm_encoder_slave.h> |
| 20 | |
| 21 | #include "adv7511.h" |
| 22 | |
| 23 | struct adv7511 { |
| 24 | struct i2c_client *i2c_main; |
| 25 | struct i2c_client *i2c_edid; |
| 26 | |
| 27 | struct regmap *regmap; |
| 28 | struct regmap *packet_memory_regmap; |
| 29 | enum drm_connector_status status; |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 30 | bool powered; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 31 | |
| 32 | unsigned int f_tmds; |
| 33 | |
| 34 | unsigned int current_edid_segment; |
| 35 | uint8_t edid_buf[256]; |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 36 | bool edid_read; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 37 | |
| 38 | wait_queue_head_t wq; |
| 39 | struct drm_encoder *encoder; |
| 40 | |
| 41 | bool embedded_sync; |
| 42 | enum adv7511_sync_polarity vsync_polarity; |
| 43 | enum adv7511_sync_polarity hsync_polarity; |
| 44 | bool rgb; |
| 45 | |
| 46 | struct edid *edid; |
| 47 | |
| 48 | struct gpio_desc *gpio_pd; |
| 49 | }; |
| 50 | |
| 51 | static struct adv7511 *encoder_to_adv7511(struct drm_encoder *encoder) |
| 52 | { |
| 53 | return to_encoder_slave(encoder)->slave_priv; |
| 54 | } |
| 55 | |
| 56 | /* ADI recommended values for proper operation. */ |
Nariman Poushin | 8019ff6 | 2015-07-16 16:36:21 +0100 | [diff] [blame] | 57 | static const struct reg_sequence adv7511_fixed_registers[] = { |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 58 | { 0x98, 0x03 }, |
| 59 | { 0x9a, 0xe0 }, |
| 60 | { 0x9c, 0x30 }, |
| 61 | { 0x9d, 0x61 }, |
| 62 | { 0xa2, 0xa4 }, |
| 63 | { 0xa3, 0xa4 }, |
| 64 | { 0xe0, 0xd0 }, |
| 65 | { 0xf9, 0x00 }, |
| 66 | { 0x55, 0x02 }, |
| 67 | }; |
| 68 | |
| 69 | /* ----------------------------------------------------------------------------- |
| 70 | * Register access |
| 71 | */ |
| 72 | |
| 73 | static const uint8_t adv7511_register_defaults[] = { |
| 74 | 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */ |
| 75 | 0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13, |
| 76 | 0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */ |
| 77 | 0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84, |
| 78 | 0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */ |
| 79 | 0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac, |
| 80 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */ |
| 81 | 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0, |
| 82 | 0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */ |
| 83 | 0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 84 | 0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */ |
| 85 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 86 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */ |
| 87 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 88 | 0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */ |
| 89 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 90 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */ |
| 91 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 92 | 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */ |
| 93 | 0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00, |
| 94 | 0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */ |
| 95 | 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14, |
| 96 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */ |
| 97 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 98 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */ |
| 99 | 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04, |
| 100 | 0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */ |
| 101 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01, |
| 102 | 0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */ |
| 103 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 104 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */ |
| 105 | 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 106 | }; |
| 107 | |
| 108 | static bool adv7511_register_volatile(struct device *dev, unsigned int reg) |
| 109 | { |
| 110 | switch (reg) { |
| 111 | case ADV7511_REG_CHIP_REVISION: |
| 112 | case ADV7511_REG_SPDIF_FREQ: |
| 113 | case ADV7511_REG_CTS_AUTOMATIC1: |
| 114 | case ADV7511_REG_CTS_AUTOMATIC2: |
| 115 | case ADV7511_REG_VIC_DETECTED: |
| 116 | case ADV7511_REG_VIC_SEND: |
| 117 | case ADV7511_REG_AUX_VIC_DETECTED: |
| 118 | case ADV7511_REG_STATUS: |
| 119 | case ADV7511_REG_GC(1): |
| 120 | case ADV7511_REG_INT(0): |
| 121 | case ADV7511_REG_INT(1): |
| 122 | case ADV7511_REG_PLL_STATUS: |
| 123 | case ADV7511_REG_AN(0): |
| 124 | case ADV7511_REG_AN(1): |
| 125 | case ADV7511_REG_AN(2): |
| 126 | case ADV7511_REG_AN(3): |
| 127 | case ADV7511_REG_AN(4): |
| 128 | case ADV7511_REG_AN(5): |
| 129 | case ADV7511_REG_AN(6): |
| 130 | case ADV7511_REG_AN(7): |
| 131 | case ADV7511_REG_HDCP_STATUS: |
| 132 | case ADV7511_REG_BCAPS: |
| 133 | case ADV7511_REG_BKSV(0): |
| 134 | case ADV7511_REG_BKSV(1): |
| 135 | case ADV7511_REG_BKSV(2): |
| 136 | case ADV7511_REG_BKSV(3): |
| 137 | case ADV7511_REG_BKSV(4): |
| 138 | case ADV7511_REG_DDC_STATUS: |
Wolfram Sang | cd38a33 | 2016-01-04 03:33:46 +0100 | [diff] [blame] | 139 | case ADV7511_REG_EDID_READ_CTRL: |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 140 | case ADV7511_REG_BSTATUS(0): |
| 141 | case ADV7511_REG_BSTATUS(1): |
| 142 | case ADV7511_REG_CHIP_ID_HIGH: |
| 143 | case ADV7511_REG_CHIP_ID_LOW: |
| 144 | return true; |
| 145 | } |
| 146 | |
| 147 | return false; |
| 148 | } |
| 149 | |
| 150 | static const struct regmap_config adv7511_regmap_config = { |
| 151 | .reg_bits = 8, |
| 152 | .val_bits = 8, |
| 153 | |
| 154 | .max_register = 0xff, |
| 155 | .cache_type = REGCACHE_RBTREE, |
| 156 | .reg_defaults_raw = adv7511_register_defaults, |
| 157 | .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults), |
| 158 | |
| 159 | .volatile_reg = adv7511_register_volatile, |
| 160 | }; |
| 161 | |
| 162 | /* ----------------------------------------------------------------------------- |
| 163 | * Hardware configuration |
| 164 | */ |
| 165 | |
| 166 | static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable, |
| 167 | const uint16_t *coeff, |
| 168 | unsigned int scaling_factor) |
| 169 | { |
| 170 | unsigned int i; |
| 171 | |
| 172 | regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), |
| 173 | ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE); |
| 174 | |
| 175 | if (enable) { |
| 176 | for (i = 0; i < 12; ++i) { |
| 177 | regmap_update_bits(adv7511->regmap, |
| 178 | ADV7511_REG_CSC_UPPER(i), |
| 179 | 0x1f, coeff[i] >> 8); |
| 180 | regmap_write(adv7511->regmap, |
| 181 | ADV7511_REG_CSC_LOWER(i), |
| 182 | coeff[i] & 0xff); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | if (enable) |
| 187 | regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), |
| 188 | 0xe0, 0x80 | (scaling_factor << 5)); |
| 189 | else |
| 190 | regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), |
| 191 | 0x80, 0x00); |
| 192 | |
| 193 | regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), |
| 194 | ADV7511_CSC_UPDATE_MODE, 0); |
| 195 | } |
| 196 | |
| 197 | static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet) |
| 198 | { |
| 199 | if (packet & 0xff) |
| 200 | regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, |
| 201 | packet, 0xff); |
| 202 | |
| 203 | if (packet & 0xff00) { |
| 204 | packet >>= 8; |
| 205 | regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, |
| 206 | packet, 0xff); |
| 207 | } |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet) |
| 213 | { |
| 214 | if (packet & 0xff) |
| 215 | regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, |
| 216 | packet, 0x00); |
| 217 | |
| 218 | if (packet & 0xff00) { |
| 219 | packet >>= 8; |
| 220 | regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, |
| 221 | packet, 0x00); |
| 222 | } |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | /* Coefficients for adv7511 color space conversion */ |
| 228 | static const uint16_t adv7511_csc_ycbcr_to_rgb[] = { |
| 229 | 0x0734, 0x04ad, 0x0000, 0x1c1b, |
| 230 | 0x1ddc, 0x04ad, 0x1f24, 0x0135, |
| 231 | 0x0000, 0x04ad, 0x087c, 0x1b77, |
| 232 | }; |
| 233 | |
| 234 | static void adv7511_set_config_csc(struct adv7511 *adv7511, |
| 235 | struct drm_connector *connector, |
| 236 | bool rgb) |
| 237 | { |
| 238 | struct adv7511_video_config config; |
| 239 | bool output_format_422, output_format_ycbcr; |
| 240 | unsigned int mode; |
| 241 | uint8_t infoframe[17]; |
| 242 | |
| 243 | if (adv7511->edid) |
| 244 | config.hdmi_mode = drm_detect_hdmi_monitor(adv7511->edid); |
| 245 | else |
| 246 | config.hdmi_mode = false; |
| 247 | |
| 248 | hdmi_avi_infoframe_init(&config.avi_infoframe); |
| 249 | |
| 250 | config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN; |
| 251 | |
| 252 | if (rgb) { |
| 253 | config.csc_enable = false; |
| 254 | config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; |
| 255 | } else { |
| 256 | config.csc_scaling_factor = ADV7511_CSC_SCALING_4; |
| 257 | config.csc_coefficents = adv7511_csc_ycbcr_to_rgb; |
| 258 | |
| 259 | if ((connector->display_info.color_formats & |
| 260 | DRM_COLOR_FORMAT_YCRCB422) && |
| 261 | config.hdmi_mode) { |
| 262 | config.csc_enable = false; |
| 263 | config.avi_infoframe.colorspace = |
| 264 | HDMI_COLORSPACE_YUV422; |
| 265 | } else { |
| 266 | config.csc_enable = true; |
| 267 | config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | if (config.hdmi_mode) { |
| 272 | mode = ADV7511_HDMI_CFG_MODE_HDMI; |
| 273 | |
| 274 | switch (config.avi_infoframe.colorspace) { |
| 275 | case HDMI_COLORSPACE_YUV444: |
| 276 | output_format_422 = false; |
| 277 | output_format_ycbcr = true; |
| 278 | break; |
| 279 | case HDMI_COLORSPACE_YUV422: |
| 280 | output_format_422 = true; |
| 281 | output_format_ycbcr = true; |
| 282 | break; |
| 283 | default: |
| 284 | output_format_422 = false; |
| 285 | output_format_ycbcr = false; |
| 286 | break; |
| 287 | } |
| 288 | } else { |
| 289 | mode = ADV7511_HDMI_CFG_MODE_DVI; |
| 290 | output_format_422 = false; |
| 291 | output_format_ycbcr = false; |
| 292 | } |
| 293 | |
| 294 | adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); |
| 295 | |
| 296 | adv7511_set_colormap(adv7511, config.csc_enable, |
| 297 | config.csc_coefficents, |
| 298 | config.csc_scaling_factor); |
| 299 | |
| 300 | regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81, |
| 301 | (output_format_422 << 7) | output_format_ycbcr); |
| 302 | |
| 303 | regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG, |
| 304 | ADV7511_HDMI_CFG_MODE_MASK, mode); |
| 305 | |
| 306 | hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe, |
| 307 | sizeof(infoframe)); |
| 308 | |
| 309 | /* The AVI infoframe id is not configurable */ |
| 310 | regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION, |
| 311 | infoframe + 1, sizeof(infoframe) - 1); |
| 312 | |
| 313 | adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); |
| 314 | } |
| 315 | |
| 316 | static void adv7511_set_link_config(struct adv7511 *adv7511, |
| 317 | const struct adv7511_link_config *config) |
| 318 | { |
| 319 | /* |
| 320 | * The input style values documented in the datasheet don't match the |
| 321 | * hardware register field values :-( |
| 322 | */ |
| 323 | static const unsigned int input_styles[4] = { 0, 2, 1, 3 }; |
| 324 | |
| 325 | unsigned int clock_delay; |
| 326 | unsigned int color_depth; |
| 327 | unsigned int input_id; |
| 328 | |
| 329 | clock_delay = (config->clock_delay + 1200) / 400; |
| 330 | color_depth = config->input_color_depth == 8 ? 3 |
| 331 | : (config->input_color_depth == 10 ? 1 : 2); |
| 332 | |
| 333 | /* TODO Support input ID 6 */ |
| 334 | if (config->input_colorspace != HDMI_COLORSPACE_YUV422) |
| 335 | input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR |
| 336 | ? 5 : 0; |
| 337 | else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR) |
| 338 | input_id = config->embedded_sync ? 8 : 7; |
| 339 | else if (config->input_clock == ADV7511_INPUT_CLOCK_2X) |
| 340 | input_id = config->embedded_sync ? 4 : 3; |
| 341 | else |
| 342 | input_id = config->embedded_sync ? 2 : 1; |
| 343 | |
| 344 | regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf, |
| 345 | input_id); |
| 346 | regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e, |
| 347 | (color_depth << 4) | |
| 348 | (input_styles[config->input_style] << 2)); |
| 349 | regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2, |
| 350 | config->input_justification << 3); |
| 351 | regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ, |
| 352 | config->sync_pulse << 2); |
| 353 | |
| 354 | regmap_write(adv7511->regmap, 0xba, clock_delay << 5); |
| 355 | |
| 356 | adv7511->embedded_sync = config->embedded_sync; |
| 357 | adv7511->hsync_polarity = config->hsync_polarity; |
| 358 | adv7511->vsync_polarity = config->vsync_polarity; |
| 359 | adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB; |
| 360 | } |
| 361 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 362 | static void adv7511_power_on(struct adv7511 *adv7511) |
| 363 | { |
| 364 | adv7511->current_edid_segment = -1; |
| 365 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 366 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, |
| 367 | ADV7511_POWER_POWER_DOWN, 0); |
Wolfram Sang | d0be858 | 2016-01-04 03:33:45 +0100 | [diff] [blame] | 368 | if (adv7511->i2c_main->irq) { |
| 369 | /* |
| 370 | * Documentation says the INT_ENABLE registers are reset in |
| 371 | * POWER_DOWN mode. My 7511w preserved the bits, however. |
| 372 | * Still, let's be safe and stick to the documentation. |
| 373 | */ |
| 374 | regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), |
| 375 | ADV7511_INT0_EDID_READY); |
| 376 | regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), |
| 377 | ADV7511_INT1_DDC_ERROR); |
| 378 | } |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 379 | |
| 380 | /* |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 381 | * Per spec it is allowed to pulse the HPD signal to indicate that the |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 382 | * EDID information has changed. Some monitors do this when they wakeup |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 383 | * from standby or are enabled. When the HPD goes low the adv7511 is |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 384 | * reset and the outputs are disabled which might cause the monitor to |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 385 | * go to standby again. To avoid this we ignore the HPD pin for the |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 386 | * first few seconds after enabling the output. |
| 387 | */ |
| 388 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 389 | ADV7511_REG_POWER2_HPD_SRC_MASK, |
| 390 | ADV7511_REG_POWER2_HPD_SRC_NONE); |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 391 | |
| 392 | /* |
| 393 | * Most of the registers are reset during power down or when HPD is low. |
| 394 | */ |
| 395 | regcache_sync(adv7511->regmap); |
| 396 | |
| 397 | adv7511->powered = true; |
| 398 | } |
| 399 | |
| 400 | static void adv7511_power_off(struct adv7511 *adv7511) |
| 401 | { |
| 402 | /* TODO: setup additional power down modes */ |
| 403 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, |
| 404 | ADV7511_POWER_POWER_DOWN, |
| 405 | ADV7511_POWER_POWER_DOWN); |
| 406 | regcache_mark_dirty(adv7511->regmap); |
| 407 | |
| 408 | adv7511->powered = false; |
| 409 | } |
| 410 | |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 411 | /* ----------------------------------------------------------------------------- |
| 412 | * Interrupt and hotplug detection |
| 413 | */ |
| 414 | |
| 415 | static bool adv7511_hpd(struct adv7511 *adv7511) |
| 416 | { |
| 417 | unsigned int irq0; |
| 418 | int ret; |
| 419 | |
| 420 | ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); |
| 421 | if (ret < 0) |
| 422 | return false; |
| 423 | |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 424 | if (irq0 & ADV7511_INT0_HPD) { |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 425 | regmap_write(adv7511->regmap, ADV7511_REG_INT(0), |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 426 | ADV7511_INT0_HPD); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 427 | return true; |
| 428 | } |
| 429 | |
| 430 | return false; |
| 431 | } |
| 432 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 433 | static int adv7511_irq_process(struct adv7511 *adv7511) |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 434 | { |
| 435 | unsigned int irq0, irq1; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 436 | int ret; |
| 437 | |
| 438 | ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); |
| 439 | if (ret < 0) |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 440 | return ret; |
| 441 | |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 442 | ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1); |
| 443 | if (ret < 0) |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 444 | return ret; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 445 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 446 | regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); |
| 447 | regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 448 | |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 449 | if (irq0 & ADV7511_INT0_HPD && adv7511->encoder) |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 450 | drm_helper_hpd_irq_event(adv7511->encoder->dev); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 451 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 452 | if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { |
| 453 | adv7511->edid_read = true; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 454 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 455 | if (adv7511->i2c_main->irq) |
| 456 | wake_up_all(&adv7511->wq); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 457 | } |
| 458 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 459 | return 0; |
| 460 | } |
| 461 | |
| 462 | static irqreturn_t adv7511_irq_handler(int irq, void *devid) |
| 463 | { |
| 464 | struct adv7511 *adv7511 = devid; |
| 465 | int ret; |
| 466 | |
| 467 | ret = adv7511_irq_process(adv7511); |
| 468 | return ret < 0 ? IRQ_NONE : IRQ_HANDLED; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | /* ----------------------------------------------------------------------------- |
| 472 | * EDID retrieval |
| 473 | */ |
| 474 | |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 475 | static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout) |
| 476 | { |
| 477 | int ret; |
| 478 | |
| 479 | if (adv7511->i2c_main->irq) { |
| 480 | ret = wait_event_interruptible_timeout(adv7511->wq, |
| 481 | adv7511->edid_read, msecs_to_jiffies(timeout)); |
| 482 | } else { |
| 483 | for (; timeout > 0; timeout -= 25) { |
| 484 | ret = adv7511_irq_process(adv7511); |
| 485 | if (ret < 0) |
| 486 | break; |
| 487 | |
| 488 | if (adv7511->edid_read) |
| 489 | break; |
| 490 | |
| 491 | msleep(25); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | return adv7511->edid_read ? 0 : -EIO; |
| 496 | } |
| 497 | |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 498 | static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block, |
| 499 | size_t len) |
| 500 | { |
| 501 | struct adv7511 *adv7511 = data; |
| 502 | struct i2c_msg xfer[2]; |
| 503 | uint8_t offset; |
| 504 | unsigned int i; |
| 505 | int ret; |
| 506 | |
| 507 | if (len > 128) |
| 508 | return -EINVAL; |
| 509 | |
| 510 | if (adv7511->current_edid_segment != block / 2) { |
| 511 | unsigned int status; |
| 512 | |
| 513 | ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS, |
| 514 | &status); |
| 515 | if (ret < 0) |
| 516 | return ret; |
| 517 | |
| 518 | if (status != 2) { |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 519 | adv7511->edid_read = false; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 520 | regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT, |
| 521 | block); |
Laurent Pinchart | a524128 | 2015-02-18 15:19:33 +0200 | [diff] [blame] | 522 | ret = adv7511_wait_for_edid(adv7511, 200); |
| 523 | if (ret < 0) |
| 524 | return ret; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 525 | } |
| 526 | |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 527 | /* Break this apart, hopefully more I2C controllers will |
| 528 | * support 64 byte transfers than 256 byte transfers |
| 529 | */ |
| 530 | |
| 531 | xfer[0].addr = adv7511->i2c_edid->addr; |
| 532 | xfer[0].flags = 0; |
| 533 | xfer[0].len = 1; |
| 534 | xfer[0].buf = &offset; |
| 535 | xfer[1].addr = adv7511->i2c_edid->addr; |
| 536 | xfer[1].flags = I2C_M_RD; |
| 537 | xfer[1].len = 64; |
| 538 | xfer[1].buf = adv7511->edid_buf; |
| 539 | |
| 540 | offset = 0; |
| 541 | |
| 542 | for (i = 0; i < 4; ++i) { |
| 543 | ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer, |
| 544 | ARRAY_SIZE(xfer)); |
| 545 | if (ret < 0) |
| 546 | return ret; |
| 547 | else if (ret != 2) |
| 548 | return -EIO; |
| 549 | |
| 550 | xfer[1].buf += 64; |
| 551 | offset += 64; |
| 552 | } |
| 553 | |
| 554 | adv7511->current_edid_segment = block / 2; |
| 555 | } |
| 556 | |
| 557 | if (block % 2 == 0) |
| 558 | memcpy(buf, adv7511->edid_buf, len); |
| 559 | else |
| 560 | memcpy(buf, adv7511->edid_buf + 128, len); |
| 561 | |
| 562 | return 0; |
| 563 | } |
| 564 | |
| 565 | /* ----------------------------------------------------------------------------- |
| 566 | * Encoder operations |
| 567 | */ |
| 568 | |
| 569 | static int adv7511_get_modes(struct drm_encoder *encoder, |
| 570 | struct drm_connector *connector) |
| 571 | { |
| 572 | struct adv7511 *adv7511 = encoder_to_adv7511(encoder); |
| 573 | struct edid *edid; |
| 574 | unsigned int count; |
| 575 | |
| 576 | /* Reading the EDID only works if the device is powered */ |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 577 | if (!adv7511->powered) { |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 578 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, |
| 579 | ADV7511_POWER_POWER_DOWN, 0); |
Wolfram Sang | d0be858 | 2016-01-04 03:33:45 +0100 | [diff] [blame] | 580 | if (adv7511->i2c_main->irq) { |
| 581 | regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), |
| 582 | ADV7511_INT0_EDID_READY); |
| 583 | regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), |
| 584 | ADV7511_INT1_DDC_ERROR); |
| 585 | } |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 586 | adv7511->current_edid_segment = -1; |
| 587 | } |
| 588 | |
| 589 | edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511); |
| 590 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 591 | if (!adv7511->powered) |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 592 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, |
| 593 | ADV7511_POWER_POWER_DOWN, |
| 594 | ADV7511_POWER_POWER_DOWN); |
| 595 | |
| 596 | kfree(adv7511->edid); |
| 597 | adv7511->edid = edid; |
| 598 | if (!edid) |
| 599 | return 0; |
| 600 | |
| 601 | drm_mode_connector_update_edid_property(connector, edid); |
| 602 | count = drm_add_edid_modes(connector, edid); |
| 603 | |
| 604 | adv7511_set_config_csc(adv7511, connector, adv7511->rgb); |
| 605 | |
| 606 | return count; |
| 607 | } |
| 608 | |
| 609 | static void adv7511_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 610 | { |
| 611 | struct adv7511 *adv7511 = encoder_to_adv7511(encoder); |
| 612 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 613 | if (mode == DRM_MODE_DPMS_ON) |
| 614 | adv7511_power_on(adv7511); |
| 615 | else |
| 616 | adv7511_power_off(adv7511); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | static enum drm_connector_status |
| 620 | adv7511_encoder_detect(struct drm_encoder *encoder, |
| 621 | struct drm_connector *connector) |
| 622 | { |
| 623 | struct adv7511 *adv7511 = encoder_to_adv7511(encoder); |
| 624 | enum drm_connector_status status; |
| 625 | unsigned int val; |
| 626 | bool hpd; |
| 627 | int ret; |
| 628 | |
| 629 | ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); |
| 630 | if (ret < 0) |
| 631 | return connector_status_disconnected; |
| 632 | |
| 633 | if (val & ADV7511_STATUS_HPD) |
| 634 | status = connector_status_connected; |
| 635 | else |
| 636 | status = connector_status_disconnected; |
| 637 | |
| 638 | hpd = adv7511_hpd(adv7511); |
| 639 | |
| 640 | /* The chip resets itself when the cable is disconnected, so in case |
| 641 | * there is a pending HPD interrupt and the cable is connected there was |
| 642 | * at least one transition from disconnected to connected and the chip |
| 643 | * has to be reinitialized. */ |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 644 | if (status == connector_status_connected && hpd && adv7511->powered) { |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 645 | regcache_mark_dirty(adv7511->regmap); |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 646 | adv7511_power_on(adv7511); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 647 | adv7511_get_modes(encoder, connector); |
| 648 | if (adv7511->status == connector_status_connected) |
| 649 | status = connector_status_disconnected; |
| 650 | } else { |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 651 | /* Renable HPD sensing */ |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 652 | regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, |
Wolfram Sang | 29ce4ed | 2016-01-04 03:33:47 +0100 | [diff] [blame] | 653 | ADV7511_REG_POWER2_HPD_SRC_MASK, |
| 654 | ADV7511_REG_POWER2_HPD_SRC_BOTH); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | adv7511->status = status; |
| 658 | return status; |
| 659 | } |
| 660 | |
| 661 | static int adv7511_encoder_mode_valid(struct drm_encoder *encoder, |
| 662 | struct drm_display_mode *mode) |
| 663 | { |
| 664 | if (mode->clock > 165000) |
| 665 | return MODE_CLOCK_HIGH; |
| 666 | |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 667 | return MODE_OK; |
| 668 | } |
| 669 | |
| 670 | static void adv7511_encoder_mode_set(struct drm_encoder *encoder, |
| 671 | struct drm_display_mode *mode, |
| 672 | struct drm_display_mode *adj_mode) |
| 673 | { |
| 674 | struct adv7511 *adv7511 = encoder_to_adv7511(encoder); |
| 675 | unsigned int low_refresh_rate; |
| 676 | unsigned int hsync_polarity = 0; |
| 677 | unsigned int vsync_polarity = 0; |
| 678 | |
| 679 | if (adv7511->embedded_sync) { |
| 680 | unsigned int hsync_offset, hsync_len; |
| 681 | unsigned int vsync_offset, vsync_len; |
| 682 | |
| 683 | hsync_offset = adj_mode->crtc_hsync_start - |
| 684 | adj_mode->crtc_hdisplay; |
| 685 | vsync_offset = adj_mode->crtc_vsync_start - |
| 686 | adj_mode->crtc_vdisplay; |
| 687 | hsync_len = adj_mode->crtc_hsync_end - |
| 688 | adj_mode->crtc_hsync_start; |
| 689 | vsync_len = adj_mode->crtc_vsync_end - |
| 690 | adj_mode->crtc_vsync_start; |
| 691 | |
| 692 | /* The hardware vsync generator has a off-by-one bug */ |
| 693 | vsync_offset += 1; |
| 694 | |
| 695 | regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, |
| 696 | ((hsync_offset >> 10) & 0x7) << 5); |
| 697 | regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), |
| 698 | (hsync_offset >> 2) & 0xff); |
| 699 | regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), |
| 700 | ((hsync_offset & 0x3) << 6) | |
| 701 | ((hsync_len >> 4) & 0x3f)); |
| 702 | regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), |
| 703 | ((hsync_len & 0xf) << 4) | |
| 704 | ((vsync_offset >> 6) & 0xf)); |
| 705 | regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), |
| 706 | ((vsync_offset & 0x3f) << 2) | |
| 707 | ((vsync_len >> 8) & 0x3)); |
| 708 | regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), |
| 709 | vsync_len & 0xff); |
| 710 | |
| 711 | hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); |
| 712 | vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); |
| 713 | } else { |
| 714 | enum adv7511_sync_polarity mode_hsync_polarity; |
| 715 | enum adv7511_sync_polarity mode_vsync_polarity; |
| 716 | |
| 717 | /** |
| 718 | * If the input signal is always low or always high we want to |
| 719 | * invert or let it passthrough depending on the polarity of the |
| 720 | * current mode. |
| 721 | **/ |
| 722 | if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) |
| 723 | mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; |
| 724 | else |
| 725 | mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; |
| 726 | |
| 727 | if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) |
| 728 | mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; |
| 729 | else |
| 730 | mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; |
| 731 | |
| 732 | if (adv7511->hsync_polarity != mode_hsync_polarity && |
| 733 | adv7511->hsync_polarity != |
| 734 | ADV7511_SYNC_POLARITY_PASSTHROUGH) |
| 735 | hsync_polarity = 1; |
| 736 | |
| 737 | if (adv7511->vsync_polarity != mode_vsync_polarity && |
| 738 | adv7511->vsync_polarity != |
| 739 | ADV7511_SYNC_POLARITY_PASSTHROUGH) |
| 740 | vsync_polarity = 1; |
| 741 | } |
| 742 | |
| 743 | if (mode->vrefresh <= 24000) |
| 744 | low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; |
| 745 | else if (mode->vrefresh <= 25000) |
| 746 | low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; |
| 747 | else if (mode->vrefresh <= 30000) |
| 748 | low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; |
| 749 | else |
| 750 | low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; |
| 751 | |
| 752 | regmap_update_bits(adv7511->regmap, 0xfb, |
| 753 | 0x6, low_refresh_rate << 1); |
| 754 | regmap_update_bits(adv7511->regmap, 0x17, |
| 755 | 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); |
| 756 | |
| 757 | /* |
| 758 | * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is |
| 759 | * supposed to give better results. |
| 760 | */ |
| 761 | |
| 762 | adv7511->f_tmds = mode->clock; |
| 763 | } |
| 764 | |
Ville Syrjälä | d2267b9 | 2015-12-15 12:21:07 +0100 | [diff] [blame] | 765 | static const struct drm_encoder_slave_funcs adv7511_encoder_funcs = { |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 766 | .dpms = adv7511_encoder_dpms, |
| 767 | .mode_valid = adv7511_encoder_mode_valid, |
| 768 | .mode_set = adv7511_encoder_mode_set, |
| 769 | .detect = adv7511_encoder_detect, |
| 770 | .get_modes = adv7511_get_modes, |
| 771 | }; |
| 772 | |
| 773 | /* ----------------------------------------------------------------------------- |
| 774 | * Probe & remove |
| 775 | */ |
| 776 | |
| 777 | static int adv7511_parse_dt(struct device_node *np, |
| 778 | struct adv7511_link_config *config) |
| 779 | { |
| 780 | const char *str; |
| 781 | int ret; |
| 782 | |
| 783 | memset(config, 0, sizeof(*config)); |
| 784 | |
| 785 | of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); |
| 786 | if (config->input_color_depth != 8 && config->input_color_depth != 10 && |
| 787 | config->input_color_depth != 12) |
| 788 | return -EINVAL; |
| 789 | |
| 790 | ret = of_property_read_string(np, "adi,input-colorspace", &str); |
| 791 | if (ret < 0) |
| 792 | return ret; |
| 793 | |
| 794 | if (!strcmp(str, "rgb")) |
| 795 | config->input_colorspace = HDMI_COLORSPACE_RGB; |
| 796 | else if (!strcmp(str, "yuv422")) |
| 797 | config->input_colorspace = HDMI_COLORSPACE_YUV422; |
| 798 | else if (!strcmp(str, "yuv444")) |
| 799 | config->input_colorspace = HDMI_COLORSPACE_YUV444; |
| 800 | else |
| 801 | return -EINVAL; |
| 802 | |
| 803 | ret = of_property_read_string(np, "adi,input-clock", &str); |
| 804 | if (ret < 0) |
| 805 | return ret; |
| 806 | |
| 807 | if (!strcmp(str, "1x")) |
| 808 | config->input_clock = ADV7511_INPUT_CLOCK_1X; |
| 809 | else if (!strcmp(str, "2x")) |
| 810 | config->input_clock = ADV7511_INPUT_CLOCK_2X; |
| 811 | else if (!strcmp(str, "ddr")) |
| 812 | config->input_clock = ADV7511_INPUT_CLOCK_DDR; |
| 813 | else |
| 814 | return -EINVAL; |
| 815 | |
| 816 | if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || |
| 817 | config->input_clock != ADV7511_INPUT_CLOCK_1X) { |
| 818 | ret = of_property_read_u32(np, "adi,input-style", |
| 819 | &config->input_style); |
| 820 | if (ret) |
| 821 | return ret; |
| 822 | |
| 823 | if (config->input_style < 1 || config->input_style > 3) |
| 824 | return -EINVAL; |
| 825 | |
| 826 | ret = of_property_read_string(np, "adi,input-justification", |
| 827 | &str); |
| 828 | if (ret < 0) |
| 829 | return ret; |
| 830 | |
| 831 | if (!strcmp(str, "left")) |
| 832 | config->input_justification = |
| 833 | ADV7511_INPUT_JUSTIFICATION_LEFT; |
| 834 | else if (!strcmp(str, "evenly")) |
| 835 | config->input_justification = |
| 836 | ADV7511_INPUT_JUSTIFICATION_EVENLY; |
| 837 | else if (!strcmp(str, "right")) |
| 838 | config->input_justification = |
| 839 | ADV7511_INPUT_JUSTIFICATION_RIGHT; |
| 840 | else |
| 841 | return -EINVAL; |
| 842 | |
| 843 | } else { |
| 844 | config->input_style = 1; |
| 845 | config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; |
| 846 | } |
| 847 | |
| 848 | of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); |
| 849 | if (config->clock_delay < -1200 || config->clock_delay > 1600) |
| 850 | return -EINVAL; |
| 851 | |
| 852 | config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); |
| 853 | |
| 854 | /* Hardcode the sync pulse configurations for now. */ |
| 855 | config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; |
| 856 | config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; |
| 857 | config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; |
| 858 | |
| 859 | return 0; |
| 860 | } |
| 861 | |
| 862 | static const int edid_i2c_addr = 0x7e; |
| 863 | static const int packet_i2c_addr = 0x70; |
| 864 | static const int cec_i2c_addr = 0x78; |
| 865 | |
| 866 | static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) |
| 867 | { |
| 868 | struct adv7511_link_config link_config; |
| 869 | struct adv7511 *adv7511; |
| 870 | struct device *dev = &i2c->dev; |
| 871 | unsigned int val; |
| 872 | int ret; |
| 873 | |
| 874 | if (!dev->of_node) |
| 875 | return -EINVAL; |
| 876 | |
| 877 | adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); |
| 878 | if (!adv7511) |
| 879 | return -ENOMEM; |
| 880 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 881 | adv7511->powered = false; |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 882 | adv7511->status = connector_status_disconnected; |
| 883 | |
| 884 | ret = adv7511_parse_dt(dev->of_node, &link_config); |
| 885 | if (ret) |
| 886 | return ret; |
| 887 | |
| 888 | /* |
| 889 | * The power down GPIO is optional. If present, toggle it from active to |
| 890 | * inactive to wake up the encoder. |
| 891 | */ |
| 892 | adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); |
| 893 | if (IS_ERR(adv7511->gpio_pd)) |
| 894 | return PTR_ERR(adv7511->gpio_pd); |
| 895 | |
| 896 | if (adv7511->gpio_pd) { |
| 897 | mdelay(5); |
| 898 | gpiod_set_value_cansleep(adv7511->gpio_pd, 0); |
| 899 | } |
| 900 | |
| 901 | adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); |
| 902 | if (IS_ERR(adv7511->regmap)) |
| 903 | return PTR_ERR(adv7511->regmap); |
| 904 | |
| 905 | ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); |
| 906 | if (ret) |
| 907 | return ret; |
| 908 | dev_dbg(dev, "Rev. %d\n", val); |
| 909 | |
| 910 | ret = regmap_register_patch(adv7511->regmap, adv7511_fixed_registers, |
| 911 | ARRAY_SIZE(adv7511_fixed_registers)); |
| 912 | if (ret) |
| 913 | return ret; |
| 914 | |
| 915 | regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr); |
| 916 | regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, |
| 917 | packet_i2c_addr); |
| 918 | regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR, cec_i2c_addr); |
| 919 | adv7511_packet_disable(adv7511, 0xffff); |
| 920 | |
| 921 | adv7511->i2c_main = i2c; |
| 922 | adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1); |
| 923 | if (!adv7511->i2c_edid) |
| 924 | return -ENOMEM; |
| 925 | |
| 926 | if (i2c->irq) { |
| 927 | init_waitqueue_head(&adv7511->wq); |
| 928 | |
| 929 | ret = devm_request_threaded_irq(dev, i2c->irq, NULL, |
| 930 | adv7511_irq_handler, |
| 931 | IRQF_ONESHOT, dev_name(dev), |
| 932 | adv7511); |
| 933 | if (ret) |
| 934 | goto err_i2c_unregister_device; |
| 935 | } |
| 936 | |
| 937 | /* CEC is unused for now */ |
| 938 | regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, |
| 939 | ADV7511_CEC_CTRL_POWER_DOWN); |
| 940 | |
Laurent Pinchart | c6169e4 | 2015-03-02 14:38:52 +0200 | [diff] [blame] | 941 | adv7511_power_off(adv7511); |
Lars-Peter Clausen | 9c8af88 | 2012-03-05 16:30:57 +0100 | [diff] [blame] | 942 | |
| 943 | i2c_set_clientdata(i2c, adv7511); |
| 944 | |
| 945 | adv7511_set_link_config(adv7511, &link_config); |
| 946 | |
| 947 | return 0; |
| 948 | |
| 949 | err_i2c_unregister_device: |
| 950 | i2c_unregister_device(adv7511->i2c_edid); |
| 951 | |
| 952 | return ret; |
| 953 | } |
| 954 | |
| 955 | static int adv7511_remove(struct i2c_client *i2c) |
| 956 | { |
| 957 | struct adv7511 *adv7511 = i2c_get_clientdata(i2c); |
| 958 | |
| 959 | i2c_unregister_device(adv7511->i2c_edid); |
| 960 | |
| 961 | kfree(adv7511->edid); |
| 962 | |
| 963 | return 0; |
| 964 | } |
| 965 | |
| 966 | static int adv7511_encoder_init(struct i2c_client *i2c, struct drm_device *dev, |
| 967 | struct drm_encoder_slave *encoder) |
| 968 | { |
| 969 | |
| 970 | struct adv7511 *adv7511 = i2c_get_clientdata(i2c); |
| 971 | |
| 972 | encoder->slave_priv = adv7511; |
| 973 | encoder->slave_funcs = &adv7511_encoder_funcs; |
| 974 | |
| 975 | adv7511->encoder = &encoder->base; |
| 976 | |
| 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | static const struct i2c_device_id adv7511_i2c_ids[] = { |
| 981 | { "adv7511", 0 }, |
| 982 | { "adv7511w", 0 }, |
| 983 | { "adv7513", 0 }, |
| 984 | { } |
| 985 | }; |
| 986 | MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); |
| 987 | |
| 988 | static const struct of_device_id adv7511_of_ids[] = { |
| 989 | { .compatible = "adi,adv7511", }, |
| 990 | { .compatible = "adi,adv7511w", }, |
| 991 | { .compatible = "adi,adv7513", }, |
| 992 | { } |
| 993 | }; |
| 994 | MODULE_DEVICE_TABLE(of, adv7511_of_ids); |
| 995 | |
| 996 | static struct drm_i2c_encoder_driver adv7511_driver = { |
| 997 | .i2c_driver = { |
| 998 | .driver = { |
| 999 | .name = "adv7511", |
| 1000 | .of_match_table = adv7511_of_ids, |
| 1001 | }, |
| 1002 | .id_table = adv7511_i2c_ids, |
| 1003 | .probe = adv7511_probe, |
| 1004 | .remove = adv7511_remove, |
| 1005 | }, |
| 1006 | |
| 1007 | .encoder_init = adv7511_encoder_init, |
| 1008 | }; |
| 1009 | |
| 1010 | static int __init adv7511_init(void) |
| 1011 | { |
| 1012 | return drm_i2c_encoder_register(THIS_MODULE, &adv7511_driver); |
| 1013 | } |
| 1014 | module_init(adv7511_init); |
| 1015 | |
| 1016 | static void __exit adv7511_exit(void) |
| 1017 | { |
| 1018 | drm_i2c_encoder_unregister(&adv7511_driver); |
| 1019 | } |
| 1020 | module_exit(adv7511_exit); |
| 1021 | |
| 1022 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); |
| 1023 | MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); |
| 1024 | MODULE_LICENSE("GPL"); |