drivers/gpu/drm/i2c/tda998x_drv.c

   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 #include <linux/component.h>
  19 #include <linux/gpio/consumer.h>
  20 #include <linux/hdmi.h>
  21 #include <linux/module.h>
  22 #include <linux/platform_data/tda9950.h>
  23 #include <linux/irq.h>
  24 #include <sound/asoundef.h>
  25 #include <sound/hdmi-codec.h>
  26
  27 #include <drm/drmP.h>
  28 #include <drm/drm_atomic_helper.h>
  29 #include <drm/drm_crtc_helper.h>
  30 #include <drm/drm_edid.h>
  31 #include <drm/drm_of.h>
  32 #include <drm/i2c/tda998x.h>
  33
  34 #include <media/cec-notifier.h>
  35
  36 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  37
  38 struct tda998x_audio_port {
  39         u8 format;              /* AFMT_xxx */
  40         u8 config;              /* AP value */
  41 };
  42
  43 struct tda998x_priv {
  44         struct i2c_client *cec;
  45         struct i2c_client *hdmi;
  46         struct mutex mutex;
  47         u16 rev;
  48         u8 cec_addr;
  49         u8 current_page;
  50         bool is_on;
  51         bool supports_infoframes;
  52         bool sink_has_audio;
  53         u8 vip_cntrl_0;
  54         u8 vip_cntrl_1;
  55         u8 vip_cntrl_2;
  56         unsigned long tmds_clock;
  57         struct tda998x_audio_params audio_params;
  58
  59         struct platform_device *audio_pdev;
  60         struct mutex audio_mutex;
  61
  62         struct mutex edid_mutex;
  63         wait_queue_head_t wq_edid;
  64         volatile int wq_edid_wait;
  65
  66         struct work_struct detect_work;
  67         struct timer_list edid_delay_timer;
  68         wait_queue_head_t edid_delay_waitq;
  69         bool edid_delay_active;
  70
  71         struct drm_encoder encoder;
  72         struct drm_connector connector;
  73
  74         struct tda998x_audio_port audio_port[2];
  75         struct tda9950_glue cec_glue;
  76         struct gpio_desc *calib;
  77         struct cec_notifier *cec_notify;
  78 };
  79
  80 #define conn_to_tda998x_priv(x) \
  81         container_of(x, struct tda998x_priv, connector)
  82
  83 #define enc_to_tda998x_priv(x) \
  84         container_of(x, struct tda998x_priv, encoder)
  85
  86 /* The TDA9988 series of devices use a paged register scheme.. to simplify
  87  * things we encode the page # in upper bits of the register #.  To read/
  88  * write a given register, we need to make sure CURPAGE register is set
  89  * appropriately.  Which implies reads/writes are not atomic.  Fun!
  90  */
  91
  92 #define REG(page, addr) (((page) << 8) | (addr))
  93 #define REG2ADDR(reg)   ((reg) & 0xff)
  94 #define REG2PAGE(reg)   (((reg) >> 8) & 0xff)
  95
  96 #define REG_CURPAGE               0xff                /* write */
  97
  98
  99 /* Page 00h: General Control */
 100 #define REG_VERSION_LSB           REG(0x00, 0x00)     /* read */
 101 #define REG_MAIN_CNTRL0           REG(0x00, 0x01)     /* read/write */
 102 # define MAIN_CNTRL0_SR           (1 << 0)
 103 # define MAIN_CNTRL0_DECS         (1 << 1)
 104 # define MAIN_CNTRL0_DEHS         (1 << 2)
 105 # define MAIN_CNTRL0_CECS         (1 << 3)
 106 # define MAIN_CNTRL0_CEHS         (1 << 4)
 107 # define MAIN_CNTRL0_SCALER       (1 << 7)
 108 #define REG_VERSION_MSB           REG(0x00, 0x02)     /* read */
 109 #define REG_SOFTRESET             REG(0x00, 0x0a)     /* write */
 110 # define SOFTRESET_AUDIO          (1 << 0)
 111 # define SOFTRESET_I2C_MASTER     (1 << 1)
 112 #define REG_DDC_DISABLE           REG(0x00, 0x0b)     /* read/write */
 113 #define REG_CCLK_ON               REG(0x00, 0x0c)     /* read/write */
 114 #define REG_I2C_MASTER            REG(0x00, 0x0d)     /* read/write */
 115 # define I2C_MASTER_DIS_MM        (1 << 0)
 116 # define I2C_MASTER_DIS_FILT      (1 << 1)
 117 # define I2C_MASTER_APP_STRT_LAT  (1 << 2)
 118 #define REG_FEAT_POWERDOWN        REG(0x00, 0x0e)     /* read/write */
 119 # define FEAT_POWERDOWN_PREFILT   BIT(0)
 120 # define FEAT_POWERDOWN_CSC       BIT(1)
 121 # define FEAT_POWERDOWN_SPDIF     (1 << 3)
 122 #define REG_INT_FLAGS_0           REG(0x00, 0x0f)     /* read/write */
 123 #define REG_INT_FLAGS_1           REG(0x00, 0x10)     /* read/write */
 124 #define REG_INT_FLAGS_2           REG(0x00, 0x11)     /* read/write */
 125 # define INT_FLAGS_2_EDID_BLK_RD  (1 << 1)
 126 #define REG_ENA_ACLK              REG(0x00, 0x16)     /* read/write */
 127 #define REG_ENA_VP_0              REG(0x00, 0x18)     /* read/write */
 128 #define REG_ENA_VP_1              REG(0x00, 0x19)     /* read/write */
 129 #define REG_ENA_VP_2              REG(0x00, 0x1a)     /* read/write */
 130 #define REG_ENA_AP                REG(0x00, 0x1e)     /* read/write */
 131 #define REG_VIP_CNTRL_0           REG(0x00, 0x20)     /* write */
 132 # define VIP_CNTRL_0_MIRR_A       (1 << 7)
 133 # define VIP_CNTRL_0_SWAP_A(x)    (((x) & 7) << 4)
 134 # define VIP_CNTRL_0_MIRR_B       (1 << 3)
 135 # define VIP_CNTRL_0_SWAP_B(x)    (((x) & 7) << 0)
 136 #define REG_VIP_CNTRL_1           REG(0x00, 0x21)     /* write */
 137 # define VIP_CNTRL_1_MIRR_C       (1 << 7)
 138 # define VIP_CNTRL_1_SWAP_C(x)    (((x) & 7) << 4)
 139 # define VIP_CNTRL_1_MIRR_D       (1 << 3)
 140 # define VIP_CNTRL_1_SWAP_D(x)    (((x) & 7) << 0)
 141 #define REG_VIP_CNTRL_2           REG(0x00, 0x22)     /* write */
 142 # define VIP_CNTRL_2_MIRR_E       (1 << 7)
 143 # define VIP_CNTRL_2_SWAP_E(x)    (((x) & 7) << 4)
 144 # define VIP_CNTRL_2_MIRR_F       (1 << 3)
 145 # define VIP_CNTRL_2_SWAP_F(x)    (((x) & 7) << 0)
 146 #define REG_VIP_CNTRL_3           REG(0x00, 0x23)     /* write */
 147 # define VIP_CNTRL_3_X_TGL        (1 << 0)
 148 # define VIP_CNTRL_3_H_TGL        (1 << 1)
 149 # define VIP_CNTRL_3_V_TGL        (1 << 2)
 150 # define VIP_CNTRL_3_EMB          (1 << 3)
 151 # define VIP_CNTRL_3_SYNC_DE      (1 << 4)
 152 # define VIP_CNTRL_3_SYNC_HS      (1 << 5)
 153 # define VIP_CNTRL_3_DE_INT       (1 << 6)
 154 # define VIP_CNTRL_3_EDGE         (1 << 7)
 155 #define REG_VIP_CNTRL_4           REG(0x00, 0x24)     /* write */
 156 # define VIP_CNTRL_4_BLC(x)       (((x) & 3) << 0)
 157 # define VIP_CNTRL_4_BLANKIT(x)   (((x) & 3) << 2)
 158 # define VIP_CNTRL_4_CCIR656      (1 << 4)
 159 # define VIP_CNTRL_4_656_ALT      (1 << 5)
 160 # define VIP_CNTRL_4_TST_656      (1 << 6)
 161 # define VIP_CNTRL_4_TST_PAT      (1 << 7)
 162 #define REG_VIP_CNTRL_5           REG(0x00, 0x25)     /* write */
 163 # define VIP_CNTRL_5_CKCASE       (1 << 0)
 164 # define VIP_CNTRL_5_SP_CNT(x)    (((x) & 3) << 1)
 165 #define REG_MUX_AP                REG(0x00, 0x26)     /* read/write */
 166 # define MUX_AP_SELECT_I2S        0x64
 167 # define MUX_AP_SELECT_SPDIF      0x40
 168 #define REG_MUX_VP_VIP_OUT        REG(0x00, 0x27)     /* read/write */
 169 #define REG_MAT_CONTRL            REG(0x00, 0x80)     /* write */
 170 # define MAT_CONTRL_MAT_SC(x)     (((x) & 3) << 0)
 171 # define MAT_CONTRL_MAT_BP        (1 << 2)
 172 #define REG_VIDFORMAT             REG(0x00, 0xa0)     /* write */
 173 #define REG_REFPIX_MSB            REG(0x00, 0xa1)     /* write */
 174 #define REG_REFPIX_LSB            REG(0x00, 0xa2)     /* write */
 175 #define REG_REFLINE_MSB           REG(0x00, 0xa3)     /* write */
 176 #define REG_REFLINE_LSB           REG(0x00, 0xa4)     /* write */
 177 #define REG_NPIX_MSB              REG(0x00, 0xa5)     /* write */
 178 #define REG_NPIX_LSB              REG(0x00, 0xa6)     /* write */
 179 #define REG_NLINE_MSB             REG(0x00, 0xa7)     /* write */
 180 #define REG_NLINE_LSB             REG(0x00, 0xa8)     /* write */
 181 #define REG_VS_LINE_STRT_1_MSB    REG(0x00, 0xa9)     /* write */
 182 #define REG_VS_LINE_STRT_1_LSB    REG(0x00, 0xaa)     /* write */
 183 #define REG_VS_PIX_STRT_1_MSB     REG(0x00, 0xab)     /* write */
 184 #define REG_VS_PIX_STRT_1_LSB     REG(0x00, 0xac)     /* write */
 185 #define REG_VS_LINE_END_1_MSB     REG(0x00, 0xad)     /* write */
 186 #define REG_VS_LINE_END_1_LSB     REG(0x00, 0xae)     /* write */
 187 #define REG_VS_PIX_END_1_MSB      REG(0x00, 0xaf)     /* write */
 188 #define REG_VS_PIX_END_1_LSB      REG(0x00, 0xb0)     /* write */
 189 #define REG_VS_LINE_STRT_2_MSB    REG(0x00, 0xb1)     /* write */
 190 #define REG_VS_LINE_STRT_2_LSB    REG(0x00, 0xb2)     /* write */
 191 #define REG_VS_PIX_STRT_2_MSB     REG(0x00, 0xb3)     /* write */
 192 #define REG_VS_PIX_STRT_2_LSB     REG(0x00, 0xb4)     /* write */
 193 #define REG_VS_LINE_END_2_MSB     REG(0x00, 0xb5)     /* write */
 194 #define REG_VS_LINE_END_2_LSB     REG(0x00, 0xb6)     /* write */
 195 #define REG_VS_PIX_END_2_MSB      REG(0x00, 0xb7)     /* write */
 196 #define REG_VS_PIX_END_2_LSB      REG(0x00, 0xb8)     /* write */
 197 #define REG_HS_PIX_START_MSB      REG(0x00, 0xb9)     /* write */
 198 #define REG_HS_PIX_START_LSB      REG(0x00, 0xba)     /* write */
 199 #define REG_HS_PIX_STOP_MSB       REG(0x00, 0xbb)     /* write */
 200 #define REG_HS_PIX_STOP_LSB       REG(0x00, 0xbc)     /* write */
 201 #define REG_VWIN_START_1_MSB      REG(0x00, 0xbd)     /* write */
 202 #define REG_VWIN_START_1_LSB      REG(0x00, 0xbe)     /* write */
 203 #define REG_VWIN_END_1_MSB        REG(0x00, 0xbf)     /* write */
 204 #define REG_VWIN_END_1_LSB        REG(0x00, 0xc0)     /* write */
 205 #define REG_VWIN_START_2_MSB      REG(0x00, 0xc1)     /* write */
 206 #define REG_VWIN_START_2_LSB      REG(0x00, 0xc2)     /* write */
 207 #define REG_VWIN_END_2_MSB        REG(0x00, 0xc3)     /* write */
 208 #define REG_VWIN_END_2_LSB        REG(0x00, 0xc4)     /* write */
 209 #define REG_DE_START_MSB          REG(0x00, 0xc5)     /* write */
 210 #define REG_DE_START_LSB          REG(0x00, 0xc6)     /* write */
 211 #define REG_DE_STOP_MSB           REG(0x00, 0xc7)     /* write */
 212 #define REG_DE_STOP_LSB           REG(0x00, 0xc8)     /* write */
 213 #define REG_TBG_CNTRL_0           REG(0x00, 0xca)     /* write */
 214 # define TBG_CNTRL_0_TOP_TGL      (1 << 0)
 215 # define TBG_CNTRL_0_TOP_SEL      (1 << 1)
 216 # define TBG_CNTRL_0_DE_EXT       (1 << 2)
 217 # define TBG_CNTRL_0_TOP_EXT      (1 << 3)
 218 # define TBG_CNTRL_0_FRAME_DIS    (1 << 5)
 219 # define TBG_CNTRL_0_SYNC_MTHD    (1 << 6)
 220 # define TBG_CNTRL_0_SYNC_ONCE    (1 << 7)
 221 #define REG_TBG_CNTRL_1           REG(0x00, 0xcb)     /* write */
 222 # define TBG_CNTRL_1_H_TGL        (1 << 0)
 223 # define TBG_CNTRL_1_V_TGL        (1 << 1)
 224 # define TBG_CNTRL_1_TGL_EN       (1 << 2)
 225 # define TBG_CNTRL_1_X_EXT        (1 << 3)
 226 # define TBG_CNTRL_1_H_EXT        (1 << 4)
 227 # define TBG_CNTRL_1_V_EXT        (1 << 5)
 228 # define TBG_CNTRL_1_DWIN_DIS     (1 << 6)
 229 #define REG_ENABLE_SPACE          REG(0x00, 0xd6)     /* write */
 230 #define REG_HVF_CNTRL_0           REG(0x00, 0xe4)     /* write */
 231 # define HVF_CNTRL_0_SM           (1 << 7)
 232 # define HVF_CNTRL_0_RWB          (1 << 6)
 233 # define HVF_CNTRL_0_PREFIL(x)    (((x) & 3) << 2)
 234 # define HVF_CNTRL_0_INTPOL(x)    (((x) & 3) << 0)
 235 #define REG_HVF_CNTRL_1           REG(0x00, 0xe5)     /* write */
 236 # define HVF_CNTRL_1_FOR          (1 << 0)
 237 # define HVF_CNTRL_1_YUVBLK       (1 << 1)
 238 # define HVF_CNTRL_1_VQR(x)       (((x) & 3) << 2)
 239 # define HVF_CNTRL_1_PAD(x)       (((x) & 3) << 4)
 240 # define HVF_CNTRL_1_SEMI_PLANAR  (1 << 6)
 241 #define REG_RPT_CNTRL             REG(0x00, 0xf0)     /* write */
 242 #define REG_I2S_FORMAT            REG(0x00, 0xfc)     /* read/write */
 243 # define I2S_FORMAT(x)            (((x) & 3) << 0)
 244 #define REG_AIP_CLKSEL            REG(0x00, 0xfd)     /* write */
 245 # define AIP_CLKSEL_AIP_SPDIF     (0 << 3)
 246 # define AIP_CLKSEL_AIP_I2S       (1 << 3)
 247 # define AIP_CLKSEL_FS_ACLK       (0 << 0)
 248 # define AIP_CLKSEL_FS_MCLK       (1 << 0)
 249 # define AIP_CLKSEL_FS_FS64SPDIF  (2 << 0)
 250
 251 /* Page 02h: PLL settings */
 252 #define REG_PLL_SERIAL_1          REG(0x02, 0x00)     /* read/write */
 253 # define PLL_SERIAL_1_SRL_FDN     (1 << 0)
 254 # define PLL_SERIAL_1_SRL_IZ(x)   (((x) & 3) << 1)
 255 # define PLL_SERIAL_1_SRL_MAN_IZ  (1 << 6)
 256 #define REG_PLL_SERIAL_2          REG(0x02, 0x01)     /* read/write */
 257 # define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0)
 258 # define PLL_SERIAL_2_SRL_PR(x)   (((x) & 0xf) << 4)
 259 #define REG_PLL_SERIAL_3          REG(0x02, 0x02)     /* read/write */
 260 # define PLL_SERIAL_3_SRL_CCIR    (1 << 0)
 261 # define PLL_SERIAL_3_SRL_DE      (1 << 2)
 262 # define PLL_SERIAL_3_SRL_PXIN_SEL (1 << 4)
 263 #define REG_SERIALIZER            REG(0x02, 0x03)     /* read/write */
 264 #define REG_BUFFER_OUT            REG(0x02, 0x04)     /* read/write */
 265 #define REG_PLL_SCG1              REG(0x02, 0x05)     /* read/write */
 266 #define REG_PLL_SCG2              REG(0x02, 0x06)     /* read/write */
 267 #define REG_PLL_SCGN1             REG(0x02, 0x07)     /* read/write */
 268 #define REG_PLL_SCGN2             REG(0x02, 0x08)     /* read/write */
 269 #define REG_PLL_SCGR1             REG(0x02, 0x09)     /* read/write */
 270 #define REG_PLL_SCGR2             REG(0x02, 0x0a)     /* read/write */
 271 #define REG_AUDIO_DIV             REG(0x02, 0x0e)     /* read/write */
 272 # define AUDIO_DIV_SERCLK_1       0
 273 # define AUDIO_DIV_SERCLK_2       1
 274 # define AUDIO_DIV_SERCLK_4       2
 275 # define AUDIO_DIV_SERCLK_8       3
 276 # define AUDIO_DIV_SERCLK_16      4
 277 # define AUDIO_DIV_SERCLK_32      5
 278 #define REG_SEL_CLK               REG(0x02, 0x11)     /* read/write */
 279 # define SEL_CLK_SEL_CLK1         (1 << 0)
 280 # define SEL_CLK_SEL_VRF_CLK(x)   (((x) & 3) << 1)
 281 # define SEL_CLK_ENA_SC_CLK       (1 << 3)
 282 #define REG_ANA_GENERAL           REG(0x02, 0x12)     /* read/write */
 283
 284
 285 /* Page 09h: EDID Control */
 286 #define REG_EDID_DATA_0           REG(0x09, 0x00)     /* read */
 287 /* next 127 successive registers are the EDID block */
 288 #define REG_EDID_CTRL             REG(0x09, 0xfa)     /* read/write */
 289 #define REG_DDC_ADDR              REG(0x09, 0xfb)     /* read/write */
 290 #define REG_DDC_OFFS              REG(0x09, 0xfc)     /* read/write */
 291 #define REG_DDC_SEGM_ADDR         REG(0x09, 0xfd)     /* read/write */
 292 #define REG_DDC_SEGM              REG(0x09, 0xfe)     /* read/write */
 293
 294
 295 /* Page 10h: information frames and packets */
 296 #define REG_IF1_HB0               REG(0x10, 0x20)     /* read/write */
 297 #define REG_IF2_HB0               REG(0x10, 0x40)     /* read/write */
 298 #define REG_IF3_HB0               REG(0x10, 0x60)     /* read/write */
 299 #define REG_IF4_HB0               REG(0x10, 0x80)     /* read/write */
 300 #define REG_IF5_HB0               REG(0x10, 0xa0)     /* read/write */
 301
 302
 303 /* Page 11h: audio settings and content info packets */
 304 #define REG_AIP_CNTRL_0           REG(0x11, 0x00)     /* read/write */
 305 # define AIP_CNTRL_0_RST_FIFO     (1 << 0)
 306 # define AIP_CNTRL_0_SWAP         (1 << 1)
 307 # define AIP_CNTRL_0_LAYOUT       (1 << 2)
 308 # define AIP_CNTRL_0_ACR_MAN      (1 << 5)
 309 # define AIP_CNTRL_0_RST_CTS      (1 << 6)
 310 #define REG_CA_I2S                REG(0x11, 0x01)     /* read/write */
 311 # define CA_I2S_CA_I2S(x)         (((x) & 31) << 0)
 312 # define CA_I2S_HBR_CHSTAT        (1 << 6)
 313 #define REG_LATENCY_RD            REG(0x11, 0x04)     /* read/write */
 314 #define REG_ACR_CTS_0             REG(0x11, 0x05)     /* read/write */
 315 #define REG_ACR_CTS_1             REG(0x11, 0x06)     /* read/write */
 316 #define REG_ACR_CTS_2             REG(0x11, 0x07)     /* read/write */
 317 #define REG_ACR_N_0               REG(0x11, 0x08)     /* read/write */
 318 #define REG_ACR_N_1               REG(0x11, 0x09)     /* read/write */
 319 #define REG_ACR_N_2               REG(0x11, 0x0a)     /* read/write */
 320 #define REG_CTS_N                 REG(0x11, 0x0c)     /* read/write */
 321 # define CTS_N_K(x)               (((x) & 7) << 0)
 322 # define CTS_N_M(x)               (((x) & 3) << 4)
 323 #define REG_ENC_CNTRL             REG(0x11, 0x0d)     /* read/write */
 324 # define ENC_CNTRL_RST_ENC        (1 << 0)
 325 # define ENC_CNTRL_RST_SEL        (1 << 1)
 326 # define ENC_CNTRL_CTL_CODE(x)    (((x) & 3) << 2)
 327 #define REG_DIP_FLAGS             REG(0x11, 0x0e)     /* read/write */
 328 # define DIP_FLAGS_ACR            (1 << 0)
 329 # define DIP_FLAGS_GC             (1 << 1)
 330 #define REG_DIP_IF_FLAGS          REG(0x11, 0x0f)     /* read/write */
 331 # define DIP_IF_FLAGS_IF1         (1 << 1)
 332 # define DIP_IF_FLAGS_IF2         (1 << 2)
 333 # define DIP_IF_FLAGS_IF3         (1 << 3)
 334 # define DIP_IF_FLAGS_IF4         (1 << 4)
 335 # define DIP_IF_FLAGS_IF5         (1 << 5)
 336 #define REG_CH_STAT_B(x)          REG(0x11, 0x14 + (x)) /* read/write */
 337
 338
 339 /* Page 12h: HDCP and OTP */
 340 #define REG_TX3                   REG(0x12, 0x9a)     /* read/write */
 341 #define REG_TX4                   REG(0x12, 0x9b)     /* read/write */
 342 # define TX4_PD_RAM               (1 << 1)
 343 #define REG_TX33                  REG(0x12, 0xb8)     /* read/write */
 344 # define TX33_HDMI                (1 << 1)
 345
 346
 347 /* Page 13h: Gamut related metadata packets */
 348
 349
 350
 351 /* CEC registers: (not paged)
 352  */
 353 #define REG_CEC_INTSTATUS         0xee                /* read */
 354 # define CEC_INTSTATUS_CEC        (1 << 0)
 355 # define CEC_INTSTATUS_HDMI       (1 << 1)
 356 #define REG_CEC_CAL_XOSC_CTRL1    0xf2
 357 # define CEC_CAL_XOSC_CTRL1_ENA_CAL     BIT(0)
 358 #define REG_CEC_DES_FREQ2         0xf5
 359 # define CEC_DES_FREQ2_DIS_AUTOCAL BIT(7)
 360 #define REG_CEC_CLK               0xf6
 361 # define CEC_CLK_FRO              0x11
 362 #define REG_CEC_FRO_IM_CLK_CTRL   0xfb                /* read/write */
 363 # define CEC_FRO_IM_CLK_CTRL_GHOST_DIS (1 << 7)
 364 # define CEC_FRO_IM_CLK_CTRL_ENA_OTP   (1 << 6)
 365 # define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL (1 << 1)
 366 # define CEC_FRO_IM_CLK_CTRL_FRO_DIV   (1 << 0)
 367 #define REG_CEC_RXSHPDINTENA      0xfc                /* read/write */
 368 #define REG_CEC_RXSHPDINT         0xfd                /* read */
 369 # define CEC_RXSHPDINT_RXSENS     BIT(0)
 370 # define CEC_RXSHPDINT_HPD        BIT(1)
 371 #define REG_CEC_RXSHPDLEV         0xfe                /* read */
 372 # define CEC_RXSHPDLEV_RXSENS     (1 << 0)
 373 # define CEC_RXSHPDLEV_HPD        (1 << 1)
 374
 375 #define REG_CEC_ENAMODS           0xff                /* read/write */
 376 # define CEC_ENAMODS_EN_CEC_CLK   (1 << 7)
 377 # define CEC_ENAMODS_DIS_FRO      (1 << 6)
 378 # define CEC_ENAMODS_DIS_CCLK     (1 << 5)
 379 # define CEC_ENAMODS_EN_RXSENS    (1 << 2)
 380 # define CEC_ENAMODS_EN_HDMI      (1 << 1)
 381 # define CEC_ENAMODS_EN_CEC       (1 << 0)
 382
 383
 384 /* Device versions: */
 385 #define TDA9989N2                 0x0101
 386 #define TDA19989                  0x0201
 387 #define TDA19989N2                0x0202
 388 #define TDA19988                  0x0301
 389
 390 static void
 391 cec_write(struct tda998x_priv *priv, u16 addr, u8 val)
 392 {
 393         u8 buf[] = {addr, val};
 394         struct i2c_msg msg = {
 395                 .addr = priv->cec_addr,
 396                 .len = 2,
 397                 .buf = buf,
 398         };
 399         int ret;
 400
 401         ret = i2c_transfer(priv->hdmi->adapter, &msg, 1);
 402         if (ret < 0)
 403                 dev_err(&priv->hdmi->dev, "Error %d writing to cec:0x%x\n",
 404                         ret, addr);
 405 }
 406
 407 static u8
 408 cec_read(struct tda998x_priv *priv, u8 addr)
 409 {
 410         u8 val;
 411         struct i2c_msg msg[2] = {
 412                 {
 413                         .addr = priv->cec_addr,
 414                         .len = 1,
 415                         .buf = &addr,
 416                 }, {
 417                         .addr = priv->cec_addr,
 418                         .flags = I2C_M_RD,
 419                         .len = 1,
 420                         .buf = &val,
 421                 },
 422         };
 423         int ret;
 424
 425         ret = i2c_transfer(priv->hdmi->adapter, msg, ARRAY_SIZE(msg));
 426         if (ret < 0) {
 427                 dev_err(&priv->hdmi->dev, "Error %d reading from cec:0x%x\n",
 428                         ret, addr);
 429                 val = 0;
 430         }
 431
 432         return val;
 433 }
 434
 435 static void cec_enamods(struct tda998x_priv *priv, u8 mods, bool enable)
 436 {
 437         int val = cec_read(priv, REG_CEC_ENAMODS);
 438
 439         if (val < 0)
 440                 return;
 441
 442         if (enable)
 443                 val |= mods;
 444         else
 445                 val &= ~mods;
 446
 447         cec_write(priv, REG_CEC_ENAMODS, val);
 448 }
 449
 450 static void tda998x_cec_set_calibration(struct tda998x_priv *priv, bool enable)
 451 {
 452         if (enable) {
 453                 u8 val;
 454
 455                 cec_write(priv, 0xf3, 0xc0);
 456                 cec_write(priv, 0xf4, 0xd4);
 457
 458                 /* Enable automatic calibration mode */
 459                 val = cec_read(priv, REG_CEC_DES_FREQ2);
 460                 val &= ~CEC_DES_FREQ2_DIS_AUTOCAL;
 461                 cec_write(priv, REG_CEC_DES_FREQ2, val);
 462
 463                 /* Enable free running oscillator */
 464                 cec_write(priv, REG_CEC_CLK, CEC_CLK_FRO);
 465                 cec_enamods(priv, CEC_ENAMODS_DIS_FRO, false);
 466
 467                 cec_write(priv, REG_CEC_CAL_XOSC_CTRL1,
 468                           CEC_CAL_XOSC_CTRL1_ENA_CAL);
 469         } else {
 470                 cec_write(priv, REG_CEC_CAL_XOSC_CTRL1, 0);
 471         }
 472 }
 473
 474 /*
 475  * Calibration for the internal oscillator: we need to set calibration mode,
 476  * and then pulse the IRQ line low for a 10ms ± 1% period.
 477  */
 478 static void tda998x_cec_calibration(struct tda998x_priv *priv)
 479 {
 480         struct gpio_desc *calib = priv->calib;
 481
 482         mutex_lock(&priv->edid_mutex);
 483         if (priv->hdmi->irq > 0)
 484                 disable_irq(priv->hdmi->irq);
 485         gpiod_direction_output(calib, 1);
 486         tda998x_cec_set_calibration(priv, true);
 487
 488         local_irq_disable();
 489         gpiod_set_value(calib, 0);
 490         mdelay(10);
 491         gpiod_set_value(calib, 1);
 492         local_irq_enable();
 493
 494         tda998x_cec_set_calibration(priv, false);
 495         gpiod_direction_input(calib);
 496         if (priv->hdmi->irq > 0)
 497                 enable_irq(priv->hdmi->irq);
 498         mutex_unlock(&priv->edid_mutex);
 499 }
 500
 501 static int tda998x_cec_hook_init(void *data)
 502 {
 503         struct tda998x_priv *priv = data;
 504         struct gpio_desc *calib;
 505
 506         calib = gpiod_get(&priv->hdmi->dev, "nxp,calib", GPIOD_ASIS);
 507         if (IS_ERR(calib)) {
 508                 dev_warn(&priv->hdmi->dev, "failed to get calibration gpio: %ld\n",
 509                          PTR_ERR(calib));
 510                 return PTR_ERR(calib);
 511         }
 512
 513         priv->calib = calib;
 514
 515         return 0;
 516 }
 517
 518 static void tda998x_cec_hook_exit(void *data)
 519 {
 520         struct tda998x_priv *priv = data;
 521
 522         gpiod_put(priv->calib);
 523         priv->calib = NULL;
 524 }
 525
 526 static int tda998x_cec_hook_open(void *data)
 527 {
 528         struct tda998x_priv *priv = data;
 529
 530         cec_enamods(priv, CEC_ENAMODS_EN_CEC_CLK | CEC_ENAMODS_EN_CEC, true);
 531         tda998x_cec_calibration(priv);
 532
 533         return 0;
 534 }
 535
 536 static void tda998x_cec_hook_release(void *data)
 537 {
 538         struct tda998x_priv *priv = data;
 539
 540         cec_enamods(priv, CEC_ENAMODS_EN_CEC_CLK | CEC_ENAMODS_EN_CEC, false);
 541 }
 542
 543 static int
 544 set_page(struct tda998x_priv *priv, u16 reg)
 545 {
 546         if (REG2PAGE(reg) != priv->current_page) {
 547                 struct i2c_client *client = priv->hdmi;
 548                 u8 buf[] = {
 549                                 REG_CURPAGE, REG2PAGE(reg)
 550                 };
 551                 int ret = i2c_master_send(client, buf, sizeof(buf));
 552                 if (ret < 0) {
 553                         dev_err(&client->dev, "%s %04x err %d\n", __func__,
 554                                         reg, ret);
 555                         return ret;
 556                 }
 557
 558                 priv->current_page = REG2PAGE(reg);
 559         }
 560         return 0;
 561 }
 562
 563 static int
 564 reg_read_range(struct tda998x_priv *priv, u16 reg, char *buf, int cnt)
 565 {
 566         struct i2c_client *client = priv->hdmi;
 567         u8 addr = REG2ADDR(reg);
 568         int ret;
 569
 570         mutex_lock(&priv->mutex);
 571         ret = set_page(priv, reg);
 572         if (ret < 0)
 573                 goto out;
 574
 575         ret = i2c_master_send(client, &addr, sizeof(addr));
 576         if (ret < 0)
 577                 goto fail;
 578
 579         ret = i2c_master_recv(client, buf, cnt);
 580         if (ret < 0)
 581                 goto fail;
 582
 583         goto out;
 584
 585 fail:
 586         dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg);
 587 out:
 588         mutex_unlock(&priv->mutex);
 589         return ret;
 590 }
 591
 592 static void
 593 reg_write_range(struct tda998x_priv *priv, u16 reg, u8 *p, int cnt)
 594 {
 595         struct i2c_client *client = priv->hdmi;
 596         u8 buf[cnt+1];
 597         int ret;
 598
 599         buf[0] = REG2ADDR(reg);
 600         memcpy(&buf[1], p, cnt);
 601
 602         mutex_lock(&priv->mutex);
 603         ret = set_page(priv, reg);
 604         if (ret < 0)
 605                 goto out;
 606
 607         ret = i2c_master_send(client, buf, cnt + 1);
 608         if (ret < 0)
 609                 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 610 out:
 611         mutex_unlock(&priv->mutex);
 612 }
 613
 614 static int
 615 reg_read(struct tda998x_priv *priv, u16 reg)
 616 {
 617         u8 val = 0;
 618         int ret;
 619
 620         ret = reg_read_range(priv, reg, &val, sizeof(val));
 621         if (ret < 0)
 622                 return ret;
 623         return val;
 624 }
 625
 626 static void
 627 reg_write(struct tda998x_priv *priv, u16 reg, u8 val)
 628 {
 629         struct i2c_client *client = priv->hdmi;
 630         u8 buf[] = {REG2ADDR(reg), val};
 631         int ret;
 632
 633         mutex_lock(&priv->mutex);
 634         ret = set_page(priv, reg);
 635         if (ret < 0)
 636                 goto out;
 637
 638         ret = i2c_master_send(client, buf, sizeof(buf));
 639         if (ret < 0)
 640                 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 641 out:
 642         mutex_unlock(&priv->mutex);
 643 }
 644
 645 static void
 646 reg_write16(struct tda998x_priv *priv, u16 reg, u16 val)
 647 {
 648         struct i2c_client *client = priv->hdmi;
 649         u8 buf[] = {REG2ADDR(reg), val >> 8, val};
 650         int ret;
 651
 652         mutex_lock(&priv->mutex);
 653         ret = set_page(priv, reg);
 654         if (ret < 0)
 655                 goto out;
 656
 657         ret = i2c_master_send(client, buf, sizeof(buf));
 658         if (ret < 0)
 659                 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 660 out:
 661         mutex_unlock(&priv->mutex);
 662 }
 663
 664 static void
 665 reg_set(struct tda998x_priv *priv, u16 reg, u8 val)
 666 {
 667         int old_val;
 668
 669         old_val = reg_read(priv, reg);
 670         if (old_val >= 0)
 671                 reg_write(priv, reg, old_val | val);
 672 }
 673
 674 static void
 675 reg_clear(struct tda998x_priv *priv, u16 reg, u8 val)
 676 {
 677         int old_val;
 678
 679         old_val = reg_read(priv, reg);
 680         if (old_val >= 0)
 681                 reg_write(priv, reg, old_val & ~val);
 682 }
 683
 684 static void
 685 tda998x_reset(struct tda998x_priv *priv)
 686 {
 687         /* reset audio and i2c master: */
 688         reg_write(priv, REG_SOFTRESET, SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER);
 689         msleep(50);
 690         reg_write(priv, REG_SOFTRESET, 0);
 691         msleep(50);
 692
 693         /* reset transmitter: */
 694         reg_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
 695         reg_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
 696
 697         /* PLL registers common configuration */
 698         reg_write(priv, REG_PLL_SERIAL_1, 0x00);
 699         reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(1));
 700         reg_write(priv, REG_PLL_SERIAL_3, 0x00);
 701         reg_write(priv, REG_SERIALIZER,   0x00);
 702         reg_write(priv, REG_BUFFER_OUT,   0x00);
 703         reg_write(priv, REG_PLL_SCG1,     0x00);
 704         reg_write(priv, REG_AUDIO_DIV,    AUDIO_DIV_SERCLK_8);
 705         reg_write(priv, REG_SEL_CLK,      SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
 706         reg_write(priv, REG_PLL_SCGN1,    0xfa);
 707         reg_write(priv, REG_PLL_SCGN2,    0x00);
 708         reg_write(priv, REG_PLL_SCGR1,    0x5b);
 709         reg_write(priv, REG_PLL_SCGR2,    0x00);
 710         reg_write(priv, REG_PLL_SCG2,     0x10);
 711
 712         /* Write the default value MUX register */
 713         reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
 714 }
 715
 716 /*
 717  * The TDA998x has a problem when trying to read the EDID close to a
 718  * HPD assertion: it needs a delay of 100ms to avoid timing out while
 719  * trying to read EDID data.
 720  *
 721  * However, tda998x_connector_get_modes() may be called at any moment
 722  * after tda998x_connector_detect() indicates that we are connected, so
 723  * we need to delay probing modes in tda998x_connector_get_modes() after
 724  * we have seen a HPD inactive->active transition.  This code implements
 725  * that delay.
 726  */
 727 static void tda998x_edid_delay_done(struct timer_list *t)
 728 {
 729         struct tda998x_priv *priv = from_timer(priv, t, edid_delay_timer);
 730
 731         priv->edid_delay_active = false;
 732         wake_up(&priv->edid_delay_waitq);
 733         schedule_work(&priv->detect_work);
 734 }
 735
 736 static void tda998x_edid_delay_start(struct tda998x_priv *priv)
 737 {
 738         priv->edid_delay_active = true;
 739         mod_timer(&priv->edid_delay_timer, jiffies + HZ/10);
 740 }
 741
 742 static int tda998x_edid_delay_wait(struct tda998x_priv *priv)
 743 {
 744         return wait_event_killable(priv->edid_delay_waitq, !priv->edid_delay_active);
 745 }
 746
 747 /*
 748  * We need to run the KMS hotplug event helper outside of our threaded
 749  * interrupt routine as this can call back into our get_modes method,
 750  * which will want to make use of interrupts.
 751  */
 752 static void tda998x_detect_work(struct work_struct *work)
 753 {
 754         struct tda998x_priv *priv =
 755                 container_of(work, struct tda998x_priv, detect_work);
 756         struct drm_device *dev = priv->encoder.dev;
 757
 758         if (dev)
 759                 drm_kms_helper_hotplug_event(dev);
 760 }
 761
 762 /*
 763  * only 2 interrupts may occur: screen plug/unplug and EDID read
 764  */
 765 static irqreturn_t tda998x_irq_thread(int irq, void *data)
 766 {
 767         struct tda998x_priv *priv = data;
 768         u8 sta, cec, lvl, flag0, flag1, flag2;
 769         bool handled = false;
 770
 771         sta = cec_read(priv, REG_CEC_INTSTATUS);
 772         if (sta & CEC_INTSTATUS_HDMI) {
 773                 cec = cec_read(priv, REG_CEC_RXSHPDINT);
 774                 lvl = cec_read(priv, REG_CEC_RXSHPDLEV);
 775                 flag0 = reg_read(priv, REG_INT_FLAGS_0);
 776                 flag1 = reg_read(priv, REG_INT_FLAGS_1);
 777                 flag2 = reg_read(priv, REG_INT_FLAGS_2);
 778                 DRM_DEBUG_DRIVER(
 779                         "tda irq sta %02x cec %02x lvl %02x f0 %02x f1 %02x f2 %02x\n",
 780                         sta, cec, lvl, flag0, flag1, flag2);
 781
 782                 if (cec & CEC_RXSHPDINT_HPD) {
 783                         if (lvl & CEC_RXSHPDLEV_HPD) {
 784                                 tda998x_edid_delay_start(priv);
 785                         } else {
 786                                 schedule_work(&priv->detect_work);
 787                                 cec_notifier_set_phys_addr(priv->cec_notify,
 788                                                    CEC_PHYS_ADDR_INVALID);
 789                         }
 790
 791                         handled = true;
 792                 }
 793
 794                 if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) {
 795                         priv->wq_edid_wait = 0;
 796                         wake_up(&priv->wq_edid);
 797                         handled = true;
 798                 }
 799         }
 800
 801         return IRQ_RETVAL(handled);
 802 }
 803
 804 static void
 805 tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr,
 806                  union hdmi_infoframe *frame)
 807 {
 808         u8 buf[32];
 809         ssize_t len;
 810
 811         len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
 812         if (len < 0) {
 813                 dev_err(&priv->hdmi->dev,
 814                         "hdmi_infoframe_pack() type=0x%02x failed: %zd\n",
 815                         frame->any.type, len);
 816                 return;
 817         }
 818
 819         reg_clear(priv, REG_DIP_IF_FLAGS, bit);
 820         reg_write_range(priv, addr, buf, len);
 821         reg_set(priv, REG_DIP_IF_FLAGS, bit);
 822 }
 823
 824 static int tda998x_write_aif(struct tda998x_priv *priv,
 825                              struct hdmi_audio_infoframe *cea)
 826 {
 827         union hdmi_infoframe frame;
 828
 829         frame.audio = *cea;
 830
 831         tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, &frame);
 832
 833         return 0;
 834 }
 835
 836 static void
 837 tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
 838 {
 839         union hdmi_infoframe frame;
 840
 841         drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
 842         frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
 843
 844         tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, &frame);
 845 }
 846
 847 /* Audio support */
 848
 849 static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
 850 {
 851         if (on) {
 852                 reg_set(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
 853                 reg_clear(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
 854                 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
 855         } else {
 856                 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
 857         }
 858 }
 859
 860 static int
 861 tda998x_configure_audio(struct tda998x_priv *priv,
 862                         struct tda998x_audio_params *params)
 863 {
 864         u8 buf[6], clksel_aip, clksel_fs, cts_n, adiv;
 865         u32 n;
 866
 867         /* Enable audio ports */
 868         reg_write(priv, REG_ENA_AP, params->config);
 869
 870         /* Set audio input source */
 871         switch (params->format) {
 872         case AFMT_SPDIF:
 873                 reg_write(priv, REG_ENA_ACLK, 0);
 874                 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF);
 875                 clksel_aip = AIP_CLKSEL_AIP_SPDIF;
 876                 clksel_fs = AIP_CLKSEL_FS_FS64SPDIF;
 877                 cts_n = CTS_N_M(3) | CTS_N_K(3);
 878                 break;
 879
 880         case AFMT_I2S:
 881                 reg_write(priv, REG_ENA_ACLK, 1);
 882                 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S);
 883                 clksel_aip = AIP_CLKSEL_AIP_I2S;
 884                 clksel_fs = AIP_CLKSEL_FS_ACLK;
 885                 switch (params->sample_width) {
 886                 case 16:
 887                         cts_n = CTS_N_M(3) | CTS_N_K(1);
 888                         break;
 889                 case 18:
 890                 case 20:
 891                 case 24:
 892                         cts_n = CTS_N_M(3) | CTS_N_K(2);
 893                         break;
 894                 default:
 895                 case 32:
 896                         cts_n = CTS_N_M(3) | CTS_N_K(3);
 897                         break;
 898                 }
 899                 break;
 900
 901         default:
 902                 dev_err(&priv->hdmi->dev, "Unsupported I2S format\n");
 903                 return -EINVAL;
 904         }
 905
 906         reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
 907         reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT |
 908                                         AIP_CNTRL_0_ACR_MAN);   /* auto CTS */
 909         reg_write(priv, REG_CTS_N, cts_n);
 910
 911         /*
 912          * Audio input somehow depends on HDMI line rate which is
 913          * related to pixclk. Testing showed that modes with pixclk
 914          * >100MHz need a larger divider while <40MHz need the default.
 915          * There is no detailed info in the datasheet, so we just
 916          * assume 100MHz requires larger divider.
 917          */
 918         adiv = AUDIO_DIV_SERCLK_8;
 919         if (priv->tmds_clock > 100000)
 920                 adiv++;                 /* AUDIO_DIV_SERCLK_16 */
 921
 922         /* S/PDIF asks for a larger divider */
 923         if (params->format == AFMT_SPDIF)
 924                 adiv++;                 /* AUDIO_DIV_SERCLK_16 or _32 */
 925
 926         reg_write(priv, REG_AUDIO_DIV, adiv);
 927
 928         /*
 929          * This is the approximate value of N, which happens to be
 930          * the recommended values for non-coherent clocks.
 931          */
 932         n = 128 * params->sample_rate / 1000;
 933
 934         /* Write the CTS and N values */
 935         buf[0] = 0x44;
 936         buf[1] = 0x42;
 937         buf[2] = 0x01;
 938         buf[3] = n;
 939         buf[4] = n >> 8;
 940         buf[5] = n >> 16;
 941         reg_write_range(priv, REG_ACR_CTS_0, buf, 6);
 942
 943         /* Set CTS clock reference */
 944         reg_write(priv, REG_AIP_CLKSEL, clksel_aip | clksel_fs);
 945
 946         /* Reset CTS generator */
 947         reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
 948         reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
 949
 950         /* Write the channel status
 951          * The REG_CH_STAT_B-registers skip IEC958 AES2 byte, because
 952          * there is a separate register for each I2S wire.
 953          */
 954         buf[0] = params->status[0];
 955         buf[1] = params->status[1];
 956         buf[2] = params->status[3];
 957         buf[3] = params->status[4];
 958         reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);
 959
 960         tda998x_audio_mute(priv, true);
 961         msleep(20);
 962         tda998x_audio_mute(priv, false);
 963
 964         return tda998x_write_aif(priv, &params->cea);
 965 }
 966
 967 static int tda998x_audio_hw_params(struct device *dev, void *data,
 968                                    struct hdmi_codec_daifmt *daifmt,
 969                                    struct hdmi_codec_params *params)
 970 {
 971         struct tda998x_priv *priv = dev_get_drvdata(dev);
 972         int i, ret;
 973         struct tda998x_audio_params audio = {
 974                 .sample_width = params->sample_width,
 975                 .sample_rate = params->sample_rate,
 976                 .cea = params->cea,
 977         };
 978
 979         memcpy(audio.status, params->iec.status,
 980                min(sizeof(audio.status), sizeof(params->iec.status)));
 981
 982         switch (daifmt->fmt) {
 983         case HDMI_I2S:
 984                 if (daifmt->bit_clk_inv || daifmt->frame_clk_inv ||
 985                     daifmt->bit_clk_master || daifmt->frame_clk_master) {
 986                         dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__,
 987                                 daifmt->bit_clk_inv, daifmt->frame_clk_inv,
 988                                 daifmt->bit_clk_master,
 989                                 daifmt->frame_clk_master);
 990                         return -EINVAL;
 991                 }
 992                 for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
 993                         if (priv->audio_port[i].format == AFMT_I2S)
 994                                 audio.config = priv->audio_port[i].config;
 995                 audio.format = AFMT_I2S;
 996                 break;
 997         case HDMI_SPDIF:
 998                 for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
 999                         if (priv->audio_port[i].format == AFMT_SPDIF)
1000                                 audio.config = priv->audio_port[i].config;
1001                 audio.format = AFMT_SPDIF;
1002                 break;
1003         default:
1004                 dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
1005                 return -EINVAL;
1006         }
1007
1008         if (audio.config == 0) {
1009                 dev_err(dev, "%s: No audio configuration found\n", __func__);
1010                 return -EINVAL;
1011         }
1012
1013         mutex_lock(&priv->audio_mutex);
1014         if (priv->supports_infoframes && priv->sink_has_audio)
1015                 ret = tda998x_configure_audio(priv, &audio);
1016         else
1017                 ret = 0;
1018
1019         if (ret == 0)
1020                 priv->audio_params = audio;
1021         mutex_unlock(&priv->audio_mutex);
1022
1023         return ret;
1024 }
1025
1026 static void tda998x_audio_shutdown(struct device *dev, void *data)
1027 {
1028         struct tda998x_priv *priv = dev_get_drvdata(dev);
1029
1030         mutex_lock(&priv->audio_mutex);
1031
1032         reg_write(priv, REG_ENA_AP, 0);
1033
1034         priv->audio_params.format = AFMT_UNUSED;
1035
1036         mutex_unlock(&priv->audio_mutex);
1037 }
1038
1039 int tda998x_audio_digital_mute(struct device *dev, void *data, bool enable)
1040 {
1041         struct tda998x_priv *priv = dev_get_drvdata(dev);
1042
1043         mutex_lock(&priv->audio_mutex);
1044
1045         tda998x_audio_mute(priv, enable);
1046
1047         mutex_unlock(&priv->audio_mutex);
1048         return 0;
1049 }
1050
1051 static int tda998x_audio_get_eld(struct device *dev, void *data,
1052                                  uint8_t *buf, size_t len)
1053 {
1054         struct tda998x_priv *priv = dev_get_drvdata(dev);
1055
1056         mutex_lock(&priv->audio_mutex);
1057         memcpy(buf, priv->connector.eld,
1058                min(sizeof(priv->connector.eld), len));
1059         mutex_unlock(&priv->audio_mutex);
1060
1061         return 0;
1062 }
1063
1064 static const struct hdmi_codec_ops audio_codec_ops = {
1065         .hw_params = tda998x_audio_hw_params,
1066         .audio_shutdown = tda998x_audio_shutdown,
1067         .digital_mute = tda998x_audio_digital_mute,
1068         .get_eld = tda998x_audio_get_eld,
1069 };
1070
1071 static int tda998x_audio_codec_init(struct tda998x_priv *priv,
1072                                     struct device *dev)
1073 {
1074         struct hdmi_codec_pdata codec_data = {
1075                 .ops = &audio_codec_ops,
1076                 .max_i2s_channels = 2,
1077         };
1078         int i;
1079
1080         for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++) {
1081                 if (priv->audio_port[i].format == AFMT_I2S &&
1082                     priv->audio_port[i].config != 0)
1083                         codec_data.i2s = 1;
1084                 if (priv->audio_port[i].format == AFMT_SPDIF &&
1085                     priv->audio_port[i].config != 0)
1086                         codec_data.spdif = 1;
1087         }
1088
1089         priv->audio_pdev = platform_device_register_data(
1090                 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
1091                 &codec_data, sizeof(codec_data));
1092
1093         return PTR_ERR_OR_ZERO(priv->audio_pdev);
1094 }
1095
1096 /* DRM connector functions */
1097
1098 static int tda998x_connector_fill_modes(struct drm_connector *connector,
1099                                         uint32_t maxX, uint32_t maxY)
1100 {
1101         struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1102         int ret;
1103
1104         mutex_lock(&priv->audio_mutex);
1105         ret = drm_helper_probe_single_connector_modes(connector, maxX, maxY);
1106
1107         if (connector->edid_blob_ptr) {
1108                 struct edid *edid = (void *)connector->edid_blob_ptr->data;
1109
1110                 cec_notifier_set_phys_addr_from_edid(priv->cec_notify, edid);
1111
1112                 priv->sink_has_audio = drm_detect_monitor_audio(edid);
1113         } else {
1114                 priv->sink_has_audio = false;
1115         }
1116         mutex_unlock(&priv->audio_mutex);
1117
1118         return ret;
1119 }
1120
1121 static enum drm_connector_status
1122 tda998x_connector_detect(struct drm_connector *connector, bool force)
1123 {
1124         struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1125         u8 val = cec_read(priv, REG_CEC_RXSHPDLEV);
1126
1127         return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected :
1128                         connector_status_disconnected;
1129 }
1130
1131 static void tda998x_connector_destroy(struct drm_connector *connector)
1132 {
1133         drm_connector_cleanup(connector);
1134 }
1135
1136 static const struct drm_connector_funcs tda998x_connector_funcs = {
1137         .dpms = drm_helper_connector_dpms,
1138         .reset = drm_atomic_helper_connector_reset,
1139         .fill_modes = tda998x_connector_fill_modes,
1140         .detect = tda998x_connector_detect,
1141         .destroy = tda998x_connector_destroy,
1142         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1143         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1144 };
1145
1146 static int read_edid_block(void *data, u8 *buf, unsigned int blk, size_t length)
1147 {
1148         struct tda998x_priv *priv = data;
1149         u8 offset, segptr;
1150         int ret, i;
1151
1152         offset = (blk & 1) ? 128 : 0;
1153         segptr = blk / 2;
1154
1155         mutex_lock(&priv->edid_mutex);
1156
1157         reg_write(priv, REG_DDC_ADDR, 0xa0);
1158         reg_write(priv, REG_DDC_OFFS, offset);
1159         reg_write(priv, REG_DDC_SEGM_ADDR, 0x60);
1160         reg_write(priv, REG_DDC_SEGM, segptr);
1161
1162         /* enable reading EDID: */
1163         priv->wq_edid_wait = 1;
1164         reg_write(priv, REG_EDID_CTRL, 0x1);
1165
1166         /* flag must be cleared by sw: */
1167         reg_write(priv, REG_EDID_CTRL, 0x0);
1168
1169         /* wait for block read to complete: */
1170         if (priv->hdmi->irq) {
1171                 i = wait_event_timeout(priv->wq_edid,
1172                                         !priv->wq_edid_wait,
1173                                         msecs_to_jiffies(100));
1174                 if (i < 0) {
1175                         dev_err(&priv->hdmi->dev, "read edid wait err %d\n", i);
1176                         ret = i;
1177                         goto failed;
1178                 }
1179         } else {
1180                 for (i = 100; i > 0; i--) {
1181                         msleep(1);
1182                         ret = reg_read(priv, REG_INT_FLAGS_2);
1183                         if (ret < 0)
1184                                 goto failed;
1185                         if (ret & INT_FLAGS_2_EDID_BLK_RD)
1186                                 break;
1187                 }
1188         }
1189
1190         if (i == 0) {
1191                 dev_err(&priv->hdmi->dev, "read edid timeout\n");
1192                 ret = -ETIMEDOUT;
1193                 goto failed;
1194         }
1195
1196         ret = reg_read_range(priv, REG_EDID_DATA_0, buf, length);
1197         if (ret != length) {
1198                 dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n",
1199                         blk, ret);
1200                 goto failed;
1201         }
1202
1203         ret = 0;
1204
1205  failed:
1206         mutex_unlock(&priv->edid_mutex);
1207         return ret;
1208 }
1209
1210 static int tda998x_connector_get_modes(struct drm_connector *connector)
1211 {
1212         struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1213         struct edid *edid;
1214         int n;
1215
1216         /*
1217          * If we get killed while waiting for the HPD timeout, return
1218          * no modes found: we are not in a restartable path, so we
1219          * can't handle signals gracefully.
1220          */
1221         if (tda998x_edid_delay_wait(priv))
1222                 return 0;
1223
1224         if (priv->rev == TDA19988)
1225                 reg_clear(priv, REG_TX4, TX4_PD_RAM);
1226
1227         edid = drm_do_get_edid(connector, read_edid_block, priv);
1228
1229         if (priv->rev == TDA19988)
1230                 reg_set(priv, REG_TX4, TX4_PD_RAM);
1231
1232         if (!edid) {
1233                 dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
1234                 return 0;
1235         }
1236
1237         drm_mode_connector_update_edid_property(connector, edid);
1238         n = drm_add_edid_modes(connector, edid);
1239
1240         kfree(edid);
1241
1242         return n;
1243 }
1244
1245 static enum drm_mode_status tda998x_connector_mode_valid(struct drm_connector *connector,
1246                                         struct drm_display_mode *mode)
1247 {
1248         /* TDA19988 dotclock can go up to 165MHz */
1249         struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1250
1251         if (mode->clock > ((priv->rev == TDA19988) ? 165000 : 150000))
1252                 return MODE_CLOCK_HIGH;
1253         if (mode->htotal >= BIT(13))
1254                 return MODE_BAD_HVALUE;
1255         if (mode->vtotal >= BIT(11))
1256                 return MODE_BAD_VVALUE;
1257         return MODE_OK;
1258 }
1259
1260 static struct drm_encoder *
1261 tda998x_connector_best_encoder(struct drm_connector *connector)
1262 {
1263         struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1264
1265         return &priv->encoder;
1266 }
1267
1268 static
1269 const struct drm_connector_helper_funcs tda998x_connector_helper_funcs = {
1270         .get_modes = tda998x_connector_get_modes,
1271         .mode_valid = tda998x_connector_mode_valid,
1272         .best_encoder = tda998x_connector_best_encoder,
1273 };
1274
1275 static int tda998x_connector_init(struct tda998x_priv *priv,
1276                                   struct drm_device *drm)
1277 {
1278         struct drm_connector *connector = &priv->connector;
1279         int ret;
1280
1281         connector->interlace_allowed = 1;
1282
1283         if (priv->hdmi->irq)
1284                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1285         else
1286                 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
1287                         DRM_CONNECTOR_POLL_DISCONNECT;
1288
1289         drm_connector_helper_add(connector, &tda998x_connector_helper_funcs);
1290         ret = drm_connector_init(drm, connector, &tda998x_connector_funcs,
1291                                  DRM_MODE_CONNECTOR_HDMIA);
1292         if (ret)
1293                 return ret;
1294
1295         drm_mode_connector_attach_encoder(&priv->connector, &priv->encoder);
1296
1297         return 0;
1298 }
1299
1300 /* DRM encoder functions */
1301
1302 static void tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
1303 {
1304         struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
1305         bool on;
1306
1307         /* we only care about on or off: */
1308         on = mode == DRM_MODE_DPMS_ON;
1309
1310         if (on == priv->is_on)
1311                 return;
1312
1313         if (on) {
1314                 /* enable video ports, audio will be enabled later */
1315                 reg_write(priv, REG_ENA_VP_0, 0xff);
1316                 reg_write(priv, REG_ENA_VP_1, 0xff);
1317                 reg_write(priv, REG_ENA_VP_2, 0xff);
1318                 /* set muxing after enabling ports: */
1319                 reg_write(priv, REG_VIP_CNTRL_0, priv->vip_cntrl_0);
1320                 reg_write(priv, REG_VIP_CNTRL_1, priv->vip_cntrl_1);
1321                 reg_write(priv, REG_VIP_CNTRL_2, priv->vip_cntrl_2);
1322
1323                 priv->is_on = true;
1324         } else {
1325                 /* disable video ports */
1326                 reg_write(priv, REG_ENA_VP_0, 0x00);
1327                 reg_write(priv, REG_ENA_VP_1, 0x00);
1328                 reg_write(priv, REG_ENA_VP_2, 0x00);
1329
1330                 priv->is_on = false;
1331         }
1332 }
1333
1334 static void
1335 tda998x_encoder_mode_set(struct drm_encoder *encoder,
1336                          struct drm_display_mode *mode,
1337                          struct drm_display_mode *adjusted_mode)
1338 {
1339         struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
1340         u16 ref_pix, ref_line, n_pix, n_line;
1341         u16 hs_pix_s, hs_pix_e;
1342         u16 vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
1343         u16 vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e;
1344         u16 vwin1_line_s, vwin1_line_e;
1345         u16 vwin2_line_s, vwin2_line_e;
1346         u16 de_pix_s, de_pix_e;
1347         u8 reg, div, rep;
1348
1349         /*
1350          * Internally TDA998x is using ITU-R BT.656 style sync but
1351          * we get VESA style sync. TDA998x is using a reference pixel
1352          * relative to ITU to sync to the input frame and for output
1353          * sync generation. Currently, we are using reference detection
1354          * from HS/VS, i.e. REFPIX/REFLINE denote frame start sync point
1355          * which is position of rising VS with coincident rising HS.
1356          *
1357          * Now there is some issues to take care of:
1358          * - HDMI data islands require sync-before-active
1359          * - TDA998x register values must be > 0 to be enabled
1360          * - REFLINE needs an additional offset of +1
1361          * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB
1362          *
1363          * So we add +1 to all horizontal and vertical register values,
1364          * plus an additional +3 for REFPIX as we are using RGB input only.
1365          */
1366         n_pix        = mode->htotal;
1367         n_line       = mode->vtotal;
1368
1369         hs_pix_e     = mode->hsync_end - mode->hdisplay;
1370         hs_pix_s     = mode->hsync_start - mode->hdisplay;
1371         de_pix_e     = mode->htotal;
1372         de_pix_s     = mode->htotal - mode->hdisplay;
1373         ref_pix      = 3 + hs_pix_s;
1374
1375         /*
1376          * Attached LCD controllers may generate broken sync. Allow
1377          * those to adjust the position of the rising VS edge by adding
1378          * HSKEW to ref_pix.
1379          */
1380         if (adjusted_mode->flags & DRM_MODE_FLAG_HSKEW)
1381                 ref_pix += adjusted_mode->hskew;
1382
1383         if ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0) {
1384                 ref_line     = 1 + mode->vsync_start - mode->vdisplay;
1385                 vwin1_line_s = mode->vtotal - mode->vdisplay - 1;
1386                 vwin1_line_e = vwin1_line_s + mode->vdisplay;
1387                 vs1_pix_s    = vs1_pix_e = hs_pix_s;
1388                 vs1_line_s   = mode->vsync_start - mode->vdisplay;
1389                 vs1_line_e   = vs1_line_s +
1390                                mode->vsync_end - mode->vsync_start;
1391                 vwin2_line_s = vwin2_line_e = 0;
1392                 vs2_pix_s    = vs2_pix_e  = 0;
1393                 vs2_line_s   = vs2_line_e = 0;
1394         } else {
1395                 ref_line     = 1 + (mode->vsync_start - mode->vdisplay)/2;
1396                 vwin1_line_s = (mode->vtotal - mode->vdisplay)/2;
1397                 vwin1_line_e = vwin1_line_s + mode->vdisplay/2;
1398                 vs1_pix_s    = vs1_pix_e = hs_pix_s;
1399                 vs1_line_s   = (mode->vsync_start - mode->vdisplay)/2;
1400                 vs1_line_e   = vs1_line_s +
1401                                (mode->vsync_end - mode->vsync_start)/2;
1402                 vwin2_line_s = vwin1_line_s + mode->vtotal/2;
1403                 vwin2_line_e = vwin2_line_s + mode->vdisplay/2;
1404                 vs2_pix_s    = vs2_pix_e = hs_pix_s + mode->htotal/2;
1405                 vs2_line_s   = vs1_line_s + mode->vtotal/2 ;
1406                 vs2_line_e   = vs2_line_s +
1407                                (mode->vsync_end - mode->vsync_start)/2;
1408         }
1409
1410         div = 148500 / mode->clock;
1411         if (div != 0) {
1412                 div--;
1413                 if (div > 3)
1414                         div = 3;
1415         }
1416
1417         mutex_lock(&priv->audio_mutex);
1418
1419         /* mute the audio FIFO: */
1420         reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
1421
1422         /* set HDMI HDCP mode off: */
1423         reg_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS);
1424         reg_clear(priv, REG_TX33, TX33_HDMI);
1425         reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0));
1426
1427         /* no pre-filter or interpolator: */
1428         reg_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) |
1429                         HVF_CNTRL_0_INTPOL(0));
1430         reg_set(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_PREFILT);
1431         reg_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0));
1432         reg_write(priv, REG_VIP_CNTRL_4, VIP_CNTRL_4_BLANKIT(0) |
1433                         VIP_CNTRL_4_BLC(0));
1434
1435         reg_clear(priv, REG_PLL_SERIAL_1, PLL_SERIAL_1_SRL_MAN_IZ);
1436         reg_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR |
1437                                           PLL_SERIAL_3_SRL_DE);
1438         reg_write(priv, REG_SERIALIZER, 0);
1439         reg_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0));
1440
1441         /* TODO enable pixel repeat for pixel rates less than 25Msamp/s */
1442         rep = 0;
1443         reg_write(priv, REG_RPT_CNTRL, 0);
1444         reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_VRF_CLK(0) |
1445                         SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
1446
1447         reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) |
1448                         PLL_SERIAL_2_SRL_PR(rep));
1449
1450         /* set color matrix bypass flag: */
1451         reg_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP |
1452                                 MAT_CONTRL_MAT_SC(1));
1453         reg_set(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_CSC);
1454
1455         /* set BIAS tmds value: */
1456         reg_write(priv, REG_ANA_GENERAL, 0x09);
1457
1458         /*
1459          * Sync on rising HSYNC/VSYNC
1460          */
1461         reg = VIP_CNTRL_3_SYNC_HS;
1462
1463         /*
1464          * TDA19988 requires high-active sync at input stage,
1465          * so invert low-active sync provided by master encoder here
1466          */
1467         if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1468                 reg |= VIP_CNTRL_3_H_TGL;
1469         if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1470                 reg |= VIP_CNTRL_3_V_TGL;
1471         reg_write(priv, REG_VIP_CNTRL_3, reg);
1472
1473         reg_write(priv, REG_VIDFORMAT, 0x00);
1474         reg_write16(priv, REG_REFPIX_MSB, ref_pix);
1475         reg_write16(priv, REG_REFLINE_MSB, ref_line);
1476         reg_write16(priv, REG_NPIX_MSB, n_pix);
1477         reg_write16(priv, REG_NLINE_MSB, n_line);
1478         reg_write16(priv, REG_VS_LINE_STRT_1_MSB, vs1_line_s);
1479         reg_write16(priv, REG_VS_PIX_STRT_1_MSB, vs1_pix_s);
1480         reg_write16(priv, REG_VS_LINE_END_1_MSB, vs1_line_e);
1481         reg_write16(priv, REG_VS_PIX_END_1_MSB, vs1_pix_e);
1482         reg_write16(priv, REG_VS_LINE_STRT_2_MSB, vs2_line_s);
1483         reg_write16(priv, REG_VS_PIX_STRT_2_MSB, vs2_pix_s);
1484         reg_write16(priv, REG_VS_LINE_END_2_MSB, vs2_line_e);
1485         reg_write16(priv, REG_VS_PIX_END_2_MSB, vs2_pix_e);
1486         reg_write16(priv, REG_HS_PIX_START_MSB, hs_pix_s);
1487         reg_write16(priv, REG_HS_PIX_STOP_MSB, hs_pix_e);
1488         reg_write16(priv, REG_VWIN_START_1_MSB, vwin1_line_s);
1489         reg_write16(priv, REG_VWIN_END_1_MSB, vwin1_line_e);
1490         reg_write16(priv, REG_VWIN_START_2_MSB, vwin2_line_s);
1491         reg_write16(priv, REG_VWIN_END_2_MSB, vwin2_line_e);
1492         reg_write16(priv, REG_DE_START_MSB, de_pix_s);
1493         reg_write16(priv, REG_DE_STOP_MSB, de_pix_e);
1494
1495         if (priv->rev == TDA19988) {
1496                 /* let incoming pixels fill the active space (if any) */
1497                 reg_write(priv, REG_ENABLE_SPACE, 0x00);
1498         }
1499
1500         /*
1501          * Always generate sync polarity relative to input sync and
1502          * revert input stage toggled sync at output stage
1503          */
1504         reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN;
1505         if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1506                 reg |= TBG_CNTRL_1_H_TGL;
1507         if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1508                 reg |= TBG_CNTRL_1_V_TGL;
1509         reg_write(priv, REG_TBG_CNTRL_1, reg);
1510
1511         /* must be last register set: */
1512         reg_write(priv, REG_TBG_CNTRL_0, 0);
1513
1514         priv->tmds_clock = adjusted_mode->clock;
1515
1516         /* CEA-861B section 6 says that:
1517          * CEA version 1 (CEA-861) has no support for infoframes.
1518          * CEA version 2 (CEA-861A) supports version 1 AVI infoframes,
1519          * and optional basic audio.
1520          * CEA version 3 (CEA-861B) supports version 1 and 2 AVI infoframes,
1521          * and optional digital audio, with audio infoframes.
1522          *
1523          * Since we only support generation of version 2 AVI infoframes,
1524          * ignore CEA version 2 and below (iow, behave as if we're a
1525          * CEA-861 source.)
1526          */
1527         priv->supports_infoframes = priv->connector.display_info.cea_rev >= 3;
1528
1529         if (priv->supports_infoframes) {
1530                 /* We need to turn HDMI HDCP stuff on to get audio through */
1531                 reg &= ~TBG_CNTRL_1_DWIN_DIS;
1532                 reg_write(priv, REG_TBG_CNTRL_1, reg);
1533                 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1));
1534                 reg_set(priv, REG_TX33, TX33_HDMI);
1535
1536                 tda998x_write_avi(priv, adjusted_mode);
1537
1538                 if (priv->audio_params.format != AFMT_UNUSED &&
1539                     priv->sink_has_audio)
1540                         tda998x_configure_audio(priv, &priv->audio_params);
1541         }
1542
1543         mutex_unlock(&priv->audio_mutex);
1544 }
1545
1546 static void tda998x_destroy(struct tda998x_priv *priv)
1547 {
1548         /* disable all IRQs and free the IRQ handler */
1549         cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1550         reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1551
1552         if (priv->audio_pdev)
1553                 platform_device_unregister(priv->audio_pdev);
1554
1555         if (priv->hdmi->irq)
1556                 free_irq(priv->hdmi->irq, priv);
1557
1558         del_timer_sync(&priv->edid_delay_timer);
1559         cancel_work_sync(&priv->detect_work);
1560
1561         i2c_unregister_device(priv->cec);
1562
1563         if (priv->cec_notify)
1564                 cec_notifier_put(priv->cec_notify);
1565 }
1566
1567 /* I2C driver functions */
1568
1569 static int tda998x_get_audio_ports(struct tda998x_priv *priv,
1570                                    struct device_node *np)
1571 {
1572         const u32 *port_data;
1573         u32 size;
1574         int i;
1575
1576         port_data = of_get_property(np, "audio-ports", &size);
1577         if (!port_data)
1578                 return 0;
1579
1580         size /= sizeof(u32);
1581         if (size > 2 * ARRAY_SIZE(priv->audio_port) || size % 2 != 0) {
1582                 dev_err(&priv->hdmi->dev,
1583                         "Bad number of elements in audio-ports dt-property\n");
1584                 return -EINVAL;
1585         }
1586
1587         size /= 2;
1588
1589         for (i = 0; i < size; i++) {
1590                 u8 afmt = be32_to_cpup(&port_data[2*i]);
1591                 u8 ena_ap = be32_to_cpup(&port_data[2*i+1]);
1592
1593                 if (afmt != AFMT_SPDIF && afmt != AFMT_I2S) {
1594                         dev_err(&priv->hdmi->dev,
1595                                 "Bad audio format %u\n", afmt);
1596                         return -EINVAL;
1597                 }
1598
1599                 priv->audio_port[i].format = afmt;
1600                 priv->audio_port[i].config = ena_ap;
1601         }
1602
1603         if (priv->audio_port[0].format == priv->audio_port[1].format) {
1604                 dev_err(&priv->hdmi->dev,
1605                         "There can only be on I2S port and one SPDIF port\n");
1606                 return -EINVAL;
1607         }
1608         return 0;
1609 }
1610
1611 static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
1612 {
1613         struct device_node *np = client->dev.of_node;
1614         struct i2c_board_info cec_info;
1615         u32 video;
1616         int rev_lo, rev_hi, ret;
1617
1618         mutex_init(&priv->mutex);       /* protect the page access */
1619         mutex_init(&priv->audio_mutex); /* protect access from audio thread */
1620         mutex_init(&priv->edid_mutex);
1621         init_waitqueue_head(&priv->edid_delay_waitq);
1622         timer_setup(&priv->edid_delay_timer, tda998x_edid_delay_done, 0);
1623         INIT_WORK(&priv->detect_work, tda998x_detect_work);
1624
1625         priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
1626         priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
1627         priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
1628
1629         /* CEC I2C address bound to TDA998x I2C addr by configuration pins */
1630         priv->cec_addr = 0x34 + (client->addr & 0x03);
1631         priv->current_page = 0xff;
1632         priv->hdmi = client;
1633
1634         /* wake up the device: */
1635         cec_write(priv, REG_CEC_ENAMODS,
1636                         CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
1637
1638         tda998x_reset(priv);
1639
1640         /* read version: */
1641         rev_lo = reg_read(priv, REG_VERSION_LSB);
1642         if (rev_lo < 0) {
1643                 dev_err(&client->dev, "failed to read version: %d\n", rev_lo);
1644                 return rev_lo;
1645         }
1646
1647         rev_hi = reg_read(priv, REG_VERSION_MSB);
1648         if (rev_hi < 0) {
1649                 dev_err(&client->dev, "failed to read version: %d\n", rev_hi);
1650                 return rev_hi;
1651         }
1652
1653         priv->rev = rev_lo | rev_hi << 8;
1654
1655         /* mask off feature bits: */
1656         priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */
1657
1658         switch (priv->rev) {
1659         case TDA9989N2:
1660                 dev_info(&client->dev, "found TDA9989 n2");
1661                 break;
1662         case TDA19989:
1663                 dev_info(&client->dev, "found TDA19989");
1664                 break;
1665         case TDA19989N2:
1666                 dev_info(&client->dev, "found TDA19989 n2");
1667                 break;
1668         case TDA19988:
1669                 dev_info(&client->dev, "found TDA19988");
1670                 break;
1671         default:
1672                 dev_err(&client->dev, "found unsupported device: %04x\n",
1673                         priv->rev);
1674                 return -ENXIO;
1675         }
1676
1677         /* after reset, enable DDC: */
1678         reg_write(priv, REG_DDC_DISABLE, 0x00);
1679
1680         /* set clock on DDC channel: */
1681         reg_write(priv, REG_TX3, 39);
1682
1683         /* if necessary, disable multi-master: */
1684         if (priv->rev == TDA19989)
1685                 reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
1686
1687         cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
1688                         CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
1689
1690         /* ensure interrupts are disabled */
1691         cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1692
1693         /* clear pending interrupts */
1694         cec_read(priv, REG_CEC_RXSHPDINT);
1695         reg_read(priv, REG_INT_FLAGS_0);
1696         reg_read(priv, REG_INT_FLAGS_1);
1697         reg_read(priv, REG_INT_FLAGS_2);
1698
1699         /* initialize the optional IRQ */
1700         if (client->irq) {
1701                 unsigned long irq_flags;
1702
1703                 /* init read EDID waitqueue and HDP work */
1704                 init_waitqueue_head(&priv->wq_edid);
1705
1706                 irq_flags =
1707                         irqd_get_trigger_type(irq_get_irq_data(client->irq));
1708
1709                 priv->cec_glue.irq_flags = irq_flags;
1710
1711                 irq_flags |= IRQF_SHARED | IRQF_ONESHOT;
1712                 ret = request_threaded_irq(client->irq, NULL,
1713                                            tda998x_irq_thread, irq_flags,
1714                                            "tda998x", priv);
1715                 if (ret) {
1716                         dev_err(&client->dev,
1717                                 "failed to request IRQ#%u: %d\n",
1718                                 client->irq, ret);
1719                         goto err_irq;
1720                 }
1721
1722                 /* enable HPD irq */
1723                 cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
1724         }
1725
1726         priv->cec_notify = cec_notifier_get(&client->dev);
1727         if (!priv->cec_notify) {
1728                 ret = -ENOMEM;
1729                 goto fail;
1730         }
1731
1732         priv->cec_glue.parent = &client->dev;
1733         priv->cec_glue.data = priv;
1734         priv->cec_glue.init = tda998x_cec_hook_init;
1735         priv->cec_glue.exit = tda998x_cec_hook_exit;
1736         priv->cec_glue.open = tda998x_cec_hook_open;
1737         priv->cec_glue.release = tda998x_cec_hook_release;
1738
1739         /*
1740          * Some TDA998x are actually two I2C devices merged onto one piece
1741          * of silicon: TDA9989 and TDA19989 combine the HDMI transmitter
1742          * with a slightly modified TDA9950 CEC device.  The CEC device
1743          * is at the TDA9950 address, with the address pins strapped across
1744          * to the TDA998x address pins.  Hence, it always has the same
1745          * offset.
1746          */
1747         memset(&cec_info, 0, sizeof(cec_info));
1748         strlcpy(cec_info.type, "tda9950", sizeof(cec_info.type));
1749         cec_info.addr = priv->cec_addr;
1750         cec_info.platform_data = &priv->cec_glue;
1751         cec_info.irq = client->irq;
1752
1753         priv->cec = i2c_new_device(client->adapter, &cec_info);
1754         if (!priv->cec) {
1755                 ret = -ENODEV;
1756                 goto fail;
1757         }
1758
1759         /* enable EDID read irq: */
1760         reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1761
1762         if (!np)
1763                 return 0;               /* non-DT */
1764
1765         /* get the device tree parameters */
1766         ret = of_property_read_u32(np, "video-ports", &video);
1767         if (ret == 0) {
1768                 priv->vip_cntrl_0 = video >> 16;
1769                 priv->vip_cntrl_1 = video >> 8;
1770                 priv->vip_cntrl_2 = video;
1771         }
1772
1773         ret = tda998x_get_audio_ports(priv, np);
1774         if (ret)
1775                 goto fail;
1776
1777         if (priv->audio_port[0].format != AFMT_UNUSED)
1778                 tda998x_audio_codec_init(priv, &client->dev);
1779
1780         return 0;
1781
1782 fail:
1783         /* if encoder_init fails, the encoder slave is never registered,
1784          * so cleanup here:
1785          */
1786         i2c_unregister_device(priv->cec);
1787         if (priv->cec_notify)
1788                 cec_notifier_put(priv->cec_notify);
1789         if (client->irq)
1790                 free_irq(client->irq, priv);
1791 err_irq:
1792         return ret;
1793 }
1794
1795 static void tda998x_encoder_prepare(struct drm_encoder *encoder)
1796 {
1797         tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
1798 }
1799
1800 static void tda998x_encoder_commit(struct drm_encoder *encoder)
1801 {
1802         tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
1803 }
1804
1805 static const struct drm_encoder_helper_funcs tda998x_encoder_helper_funcs = {
1806         .dpms = tda998x_encoder_dpms,
1807         .prepare = tda998x_encoder_prepare,
1808         .commit = tda998x_encoder_commit,
1809         .mode_set = tda998x_encoder_mode_set,
1810 };
1811
1812 static void tda998x_encoder_destroy(struct drm_encoder *encoder)
1813 {
1814         struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
1815
1816         tda998x_destroy(priv);
1817         drm_encoder_cleanup(encoder);
1818 }
1819
1820 static const struct drm_encoder_funcs tda998x_encoder_funcs = {
1821         .destroy = tda998x_encoder_destroy,
1822 };
1823
1824 static void tda998x_set_config(struct tda998x_priv *priv,
1825                                const struct tda998x_encoder_params *p)
1826 {
1827         priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) |
1828                             (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) |
1829                             VIP_CNTRL_0_SWAP_B(p->swap_b) |
1830                             (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0);
1831         priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) |
1832                             (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) |
1833                             VIP_CNTRL_1_SWAP_D(p->swap_d) |
1834                             (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0);
1835         priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) |
1836                             (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) |
1837                             VIP_CNTRL_2_SWAP_F(p->swap_f) |
1838                             (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
1839
1840         priv->audio_params = p->audio_params;
1841 }
1842
1843 static int tda998x_bind(struct device *dev, struct device *master, void *data)
1844 {
1845         struct tda998x_encoder_params *params = dev->platform_data;
1846         struct i2c_client *client = to_i2c_client(dev);
1847         struct drm_device *drm = data;
1848         struct tda998x_priv *priv;
1849         u32 crtcs = 0;
1850         int ret;
1851
1852         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1853         if (!priv)
1854                 return -ENOMEM;
1855
1856         dev_set_drvdata(dev, priv);
1857
1858         if (dev->of_node)
1859                 crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
1860
1861         /* If no CRTCs were found, fall back to our old behaviour */
1862         if (crtcs == 0) {
1863                 dev_warn(dev, "Falling back to first CRTC\n");
1864                 crtcs = 1 << 0;
1865         }
1866
1867         priv->encoder.possible_crtcs = crtcs;
1868
1869         ret = tda998x_create(client, priv);
1870         if (ret)
1871                 return ret;
1872
1873         if (!dev->of_node && params)
1874                 tda998x_set_config(priv, params);
1875
1876         drm_encoder_helper_add(&priv->encoder, &tda998x_encoder_helper_funcs);
1877         ret = drm_encoder_init(drm, &priv->encoder, &tda998x_encoder_funcs,
1878                                DRM_MODE_ENCODER_TMDS, NULL);
1879         if (ret)
1880                 goto err_encoder;
1881
1882         ret = tda998x_connector_init(priv, drm);
1883         if (ret)
1884                 goto err_connector;
1885
1886         return 0;
1887
1888 err_connector:
1889         drm_encoder_cleanup(&priv->encoder);
1890 err_encoder:
1891         tda998x_destroy(priv);
1892         return ret;
1893 }
1894
1895 static void tda998x_unbind(struct device *dev, struct device *master,
1896                            void *data)
1897 {
1898         struct tda998x_priv *priv = dev_get_drvdata(dev);
1899
1900         drm_connector_cleanup(&priv->connector);
1901         drm_encoder_cleanup(&priv->encoder);
1902         tda998x_destroy(priv);
1903 }
1904
1905 static const struct component_ops tda998x_ops = {
1906         .bind = tda998x_bind,
1907         .unbind = tda998x_unbind,
1908 };
1909
1910 static int
1911 tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
1912 {
1913         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
1914                 dev_warn(&client->dev, "adapter does not support I2C\n");
1915                 return -EIO;
1916         }
1917         return component_add(&client->dev, &tda998x_ops);
1918 }
1919
1920 static int tda998x_remove(struct i2c_client *client)
1921 {
1922         component_del(&client->dev, &tda998x_ops);
1923         return 0;
1924 }
1925
1926 #ifdef CONFIG_OF
1927 static const struct of_device_id tda998x_dt_ids[] = {
1928         { .compatible = "nxp,tda998x", },
1929         { }
1930 };
1931 MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
1932 #endif
1933
1934 static const struct i2c_device_id tda998x_ids[] = {
1935         { "tda998x", 0 },
1936         { }
1937 };
1938 MODULE_DEVICE_TABLE(i2c, tda998x_ids);
1939
1940 static struct i2c_driver tda998x_driver = {
1941         .probe = tda998x_probe,
1942         .remove = tda998x_remove,
1943         .driver = {
1944                 .name = "tda998x",
1945                 .of_match_table = of_match_ptr(tda998x_dt_ids),
1946         },
1947         .id_table = tda998x_ids,
1948 };
1949
1950 module_i2c_driver(tda998x_driver);
1951
1952 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1953 MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder");
1954 MODULE_LICENSE("GPL");