1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (C) 2012 Texas Instruments
   4 * Author: Rob Clark <robdclark@gmail.com>
   5 */
   6
   7#include <linux/component.h>
   8#include <linux/gpio/consumer.h>
   9#include <linux/hdmi.h>
  10#include <linux/module.h>
  11#include <linux/platform_data/tda9950.h>
  12#include <linux/irq.h>
  13#include <sound/asoundef.h>
  14#include <sound/hdmi-codec.h>
  15
  16#include <drm/drm_atomic_helper.h>
  17#include <drm/drm_bridge.h>
  18#include <drm/drm_edid.h>
  19#include <drm/drm_of.h>
  20#include <drm/drm_print.h>
  21#include <drm/drm_probe_helper.h>
  22#include <drm/drm_simple_kms_helper.h>
  23#include <drm/i2c/tda998x.h>
  24
  25#include <media/cec-notifier.h>
  26
  27#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  28
  29enum {
  30	AUDIO_ROUTE_I2S,
  31	AUDIO_ROUTE_SPDIF,
  32	AUDIO_ROUTE_NUM
  33};
  34
  35struct tda998x_audio_route {
  36	u8 ena_aclk;
  37	u8 mux_ap;
  38	u8 aip_clksel;
  39};
  40
  41struct tda998x_audio_settings {
  42	const struct tda998x_audio_route *route;
  43	struct hdmi_audio_infoframe cea;
  44	unsigned int sample_rate;
  45	u8 status[5];
  46	u8 ena_ap;
  47	u8 i2s_format;
  48	u8 cts_n;
  49};
  50
  51struct tda998x_priv {
  52	struct i2c_client *cec;
  53	struct i2c_client *hdmi;
  54	struct mutex mutex;
  55	u16 rev;
  56	u8 cec_addr;
  57	u8 current_page;
  58	bool is_on;
  59	bool supports_infoframes;
  60	bool sink_has_audio;
  61	enum hdmi_quantization_range rgb_quant_range;
  62	u8 vip_cntrl_0;
  63	u8 vip_cntrl_1;
  64	u8 vip_cntrl_2;
  65	unsigned long tmds_clock;
  66	struct tda998x_audio_settings audio;
  67
  68	struct platform_device *audio_pdev;
  69	struct mutex audio_mutex;
  70
  71	struct mutex edid_mutex;
  72	wait_queue_head_t wq_edid;
  73	volatile int wq_edid_wait;
  74
  75	struct work_struct detect_work;
  76	struct timer_list edid_delay_timer;
  77	wait_queue_head_t edid_delay_waitq;
  78	bool edid_delay_active;
  79
  80	struct drm_encoder encoder;
  81	struct drm_bridge bridge;
  82	struct drm_connector connector;
  83
  84	u8 audio_port_enable[AUDIO_ROUTE_NUM];
  85	struct tda9950_glue cec_glue;
  86	struct gpio_desc *calib;
  87	struct cec_notifier *cec_notify;
  88};
  89
  90#define conn_to_tda998x_priv(x) \
  91	container_of(x, struct tda998x_priv, connector)
  92#define enc_to_tda998x_priv(x) \
  93	container_of(x, struct tda998x_priv, encoder)
  94#define bridge_to_tda998x_priv(x) \
  95	container_of(x, struct tda998x_priv, bridge)
  96
  97/* The TDA9988 series of devices use a paged register scheme.. to simplify
  98 * things we encode the page # in upper bits of the register #.  To read/
  99 * write a given register, we need to make sure CURPAGE register is set
 100 * appropriately.  Which implies reads/writes are not atomic.  Fun!
 101 */
 102
 103#define REG(page, addr) (((page) << 8) | (addr))
 104#define REG2ADDR(reg)   ((reg) & 0xff)
 105#define REG2PAGE(reg)   (((reg) >> 8) & 0xff)
 106
 107#define REG_CURPAGE               0xff                /* write */
 108
 109
 110/* Page 00h: General Control */
 111#define REG_VERSION_LSB           REG(0x00, 0x00)     /* read */
 112#define REG_MAIN_CNTRL0           REG(0x00, 0x01)     /* read/write */
 113# define MAIN_CNTRL0_SR           (1 << 0)
 114# define MAIN_CNTRL0_DECS         (1 << 1)
 115# define MAIN_CNTRL0_DEHS         (1 << 2)
 116# define MAIN_CNTRL0_CECS         (1 << 3)
 117# define MAIN_CNTRL0_CEHS         (1 << 4)
 118# define MAIN_CNTRL0_SCALER       (1 << 7)
 119#define REG_VERSION_MSB           REG(0x00, 0x02)     /* read */
 120#define REG_SOFTRESET             REG(0x00, 0x0a)     /* write */
 121# define SOFTRESET_AUDIO          (1 << 0)
 122# define SOFTRESET_I2C_MASTER     (1 << 1)
 123#define REG_DDC_DISABLE           REG(0x00, 0x0b)     /* read/write */
 124#define REG_CCLK_ON               REG(0x00, 0x0c)     /* read/write */
 125#define REG_I2C_MASTER            REG(0x00, 0x0d)     /* read/write */
 126# define I2C_MASTER_DIS_MM        (1 << 0)
 127# define I2C_MASTER_DIS_FILT      (1 << 1)
 128# define I2C_MASTER_APP_STRT_LAT  (1 << 2)
 129#define REG_FEAT_POWERDOWN        REG(0x00, 0x0e)     /* read/write */
 130# define FEAT_POWERDOWN_PREFILT   BIT(0)
 131# define FEAT_POWERDOWN_CSC       BIT(1)
 132# define FEAT_POWERDOWN_SPDIF     (1 << 3)
 133#define REG_INT_FLAGS_0           REG(0x00, 0x0f)     /* read/write */
 134#define REG_INT_FLAGS_1           REG(0x00, 0x10)     /* read/write */
 135#define REG_INT_FLAGS_2           REG(0x00, 0x11)     /* read/write */
 136# define INT_FLAGS_2_EDID_BLK_RD  (1 << 1)
 137#define REG_ENA_ACLK              REG(0x00, 0x16)     /* read/write */
 138#define REG_ENA_VP_0              REG(0x00, 0x18)     /* read/write */
 139#define REG_ENA_VP_1              REG(0x00, 0x19)     /* read/write */
 140#define REG_ENA_VP_2              REG(0x00, 0x1a)     /* read/write */
 141#define REG_ENA_AP                REG(0x00, 0x1e)     /* read/write */
 142#define REG_VIP_CNTRL_0           REG(0x00, 0x20)     /* write */
 143# define VIP_CNTRL_0_MIRR_A       (1 << 7)
 144# define VIP_CNTRL_0_SWAP_A(x)    (((x) & 7) << 4)
 145# define VIP_CNTRL_0_MIRR_B       (1 << 3)
 146# define VIP_CNTRL_0_SWAP_B(x)    (((x) & 7) << 0)
 147#define REG_VIP_CNTRL_1           REG(0x00, 0x21)     /* write */
 148# define VIP_CNTRL_1_MIRR_C       (1 << 7)
 149# define VIP_CNTRL_1_SWAP_C(x)    (((x) & 7) << 4)
 150# define VIP_CNTRL_1_MIRR_D       (1 << 3)
 151# define VIP_CNTRL_1_SWAP_D(x)    (((x) & 7) << 0)
 152#define REG_VIP_CNTRL_2           REG(0x00, 0x22)     /* write */
 153# define VIP_CNTRL_2_MIRR_E       (1 << 7)
 154# define VIP_CNTRL_2_SWAP_E(x)    (((x) & 7) << 4)
 155# define VIP_CNTRL_2_MIRR_F       (1 << 3)
 156# define VIP_CNTRL_2_SWAP_F(x)    (((x) & 7) << 0)
 157#define REG_VIP_CNTRL_3           REG(0x00, 0x23)     /* write */
 158# define VIP_CNTRL_3_X_TGL        (1 << 0)
 159# define VIP_CNTRL_3_H_TGL        (1 << 1)
 160# define VIP_CNTRL_3_V_TGL        (1 << 2)
 161# define VIP_CNTRL_3_EMB          (1 << 3)
 162# define VIP_CNTRL_3_SYNC_DE      (1 << 4)
 163# define VIP_CNTRL_3_SYNC_HS      (1 << 5)
 164# define VIP_CNTRL_3_DE_INT       (1 << 6)
 165# define VIP_CNTRL_3_EDGE         (1 << 7)
 166#define REG_VIP_CNTRL_4           REG(0x00, 0x24)     /* write */
 167# define VIP_CNTRL_4_BLC(x)       (((x) & 3) << 0)
 168# define VIP_CNTRL_4_BLANKIT(x)   (((x) & 3) << 2)
 169# define VIP_CNTRL_4_CCIR656      (1 << 4)
 170# define VIP_CNTRL_4_656_ALT      (1 << 5)
 171# define VIP_CNTRL_4_TST_656      (1 << 6)
 172# define VIP_CNTRL_4_TST_PAT      (1 << 7)
 173#define REG_VIP_CNTRL_5           REG(0x00, 0x25)     /* write */
 174# define VIP_CNTRL_5_CKCASE       (1 << 0)
 175# define VIP_CNTRL_5_SP_CNT(x)    (((x) & 3) << 1)
 176#define REG_MUX_AP                REG(0x00, 0x26)     /* read/write */
 177# define MUX_AP_SELECT_I2S	  0x64
 178# define MUX_AP_SELECT_SPDIF	  0x40
 179#define REG_MUX_VP_VIP_OUT        REG(0x00, 0x27)     /* read/write */
 180#define REG_MAT_CONTRL            REG(0x00, 0x80)     /* write */
 181# define MAT_CONTRL_MAT_SC(x)     (((x) & 3) << 0)
 182# define MAT_CONTRL_MAT_BP        (1 << 2)
 183#define REG_VIDFORMAT             REG(0x00, 0xa0)     /* write */
 184#define REG_REFPIX_MSB            REG(0x00, 0xa1)     /* write */
 185#define REG_REFPIX_LSB            REG(0x00, 0xa2)     /* write */
 186#define REG_REFLINE_MSB           REG(0x00, 0xa3)     /* write */
 187#define REG_REFLINE_LSB           REG(0x00, 0xa4)     /* write */
 188#define REG_NPIX_MSB              REG(0x00, 0xa5)     /* write */
 189#define REG_NPIX_LSB              REG(0x00, 0xa6)     /* write */
 190#define REG_NLINE_MSB             REG(0x00, 0xa7)     /* write */
 191#define REG_NLINE_LSB             REG(0x00, 0xa8)     /* write */
 192#define REG_VS_LINE_STRT_1_MSB    REG(0x00, 0xa9)     /* write */
 193#define REG_VS_LINE_STRT_1_LSB    REG(0x00, 0xaa)     /* write */
 194#define REG_VS_PIX_STRT_1_MSB     REG(0x00, 0xab)     /* write */
 195#define REG_VS_PIX_STRT_1_LSB     REG(0x00, 0xac)     /* write */
 196#define REG_VS_LINE_END_1_MSB     REG(0x00, 0xad)     /* write */
 197#define REG_VS_LINE_END_1_LSB     REG(0x00, 0xae)     /* write */
 198#define REG_VS_PIX_END_1_MSB      REG(0x00, 0xaf)     /* write */
 199#define REG_VS_PIX_END_1_LSB      REG(0x00, 0xb0)     /* write */
 200#define REG_VS_LINE_STRT_2_MSB    REG(0x00, 0xb1)     /* write */
 201#define REG_VS_LINE_STRT_2_LSB    REG(0x00, 0xb2)     /* write */
 202#define REG_VS_PIX_STRT_2_MSB     REG(0x00, 0xb3)     /* write */
 203#define REG_VS_PIX_STRT_2_LSB     REG(0x00, 0xb4)     /* write */
 204#define REG_VS_LINE_END_2_MSB     REG(0x00, 0xb5)     /* write */
 205#define REG_VS_LINE_END_2_LSB     REG(0x00, 0xb6)     /* write */
 206#define REG_VS_PIX_END_2_MSB      REG(0x00, 0xb7)     /* write */
 207#define REG_VS_PIX_END_2_LSB      REG(0x00, 0xb8)     /* write */
 208#define REG_HS_PIX_START_MSB      REG(0x00, 0xb9)     /* write */
 209#define REG_HS_PIX_START_LSB      REG(0x00, 0xba)     /* write */
 210#define REG_HS_PIX_STOP_MSB       REG(0x00, 0xbb)     /* write */
 211#define REG_HS_PIX_STOP_LSB       REG(0x00, 0xbc)     /* write */
 212#define REG_VWIN_START_1_MSB      REG(0x00, 0xbd)     /* write */
 213#define REG_VWIN_START_1_LSB      REG(0x00, 0xbe)     /* write */
 214#define REG_VWIN_END_1_MSB        REG(0x00, 0xbf)     /* write */
 215#define REG_VWIN_END_1_LSB        REG(0x00, 0xc0)     /* write */
 216#define REG_VWIN_START_2_MSB      REG(0x00, 0xc1)     /* write */
 217#define REG_VWIN_START_2_LSB      REG(0x00, 0xc2)     /* write */
 218#define REG_VWIN_END_2_MSB        REG(0x00, 0xc3)     /* write */
 219#define REG_VWIN_END_2_LSB        REG(0x00, 0xc4)     /* write */
 220#define REG_DE_START_MSB          REG(0x00, 0xc5)     /* write */
 221#define REG_DE_START_LSB          REG(0x00, 0xc6)     /* write */
 222#define REG_DE_STOP_MSB           REG(0x00, 0xc7)     /* write */
 223#define REG_DE_STOP_LSB           REG(0x00, 0xc8)     /* write */
 224#define REG_TBG_CNTRL_0           REG(0x00, 0xca)     /* write */
 225# define TBG_CNTRL_0_TOP_TGL      (1 << 0)
 226# define TBG_CNTRL_0_TOP_SEL      (1 << 1)
 227# define TBG_CNTRL_0_DE_EXT       (1 << 2)
 228# define TBG_CNTRL_0_TOP_EXT      (1 << 3)
 229# define TBG_CNTRL_0_FRAME_DIS    (1 << 5)
 230# define TBG_CNTRL_0_SYNC_MTHD    (1 << 6)
 231# define TBG_CNTRL_0_SYNC_ONCE    (1 << 7)
 232#define REG_TBG_CNTRL_1           REG(0x00, 0xcb)     /* write */
 233# define TBG_CNTRL_1_H_TGL        (1 << 0)
 234# define TBG_CNTRL_1_V_TGL        (1 << 1)
 235# define TBG_CNTRL_1_TGL_EN       (1 << 2)
 236# define TBG_CNTRL_1_X_EXT        (1 << 3)
 237# define TBG_CNTRL_1_H_EXT        (1 << 4)
 238# define TBG_CNTRL_1_V_EXT        (1 << 5)
 239# define TBG_CNTRL_1_DWIN_DIS     (1 << 6)
 240#define REG_ENABLE_SPACE          REG(0x00, 0xd6)     /* write */
 241#define REG_HVF_CNTRL_0           REG(0x00, 0xe4)     /* write */
 242# define HVF_CNTRL_0_SM           (1 << 7)
 243# define HVF_CNTRL_0_RWB          (1 << 6)
 244# define HVF_CNTRL_0_PREFIL(x)    (((x) & 3) << 2)
 245# define HVF_CNTRL_0_INTPOL(x)    (((x) & 3) << 0)
 246#define REG_HVF_CNTRL_1           REG(0x00, 0xe5)     /* write */
 247# define HVF_CNTRL_1_FOR          (1 << 0)
 248# define HVF_CNTRL_1_YUVBLK       (1 << 1)
 249# define HVF_CNTRL_1_VQR(x)       (((x) & 3) << 2)
 250# define HVF_CNTRL_1_PAD(x)       (((x) & 3) << 4)
 251# define HVF_CNTRL_1_SEMI_PLANAR  (1 << 6)
 252#define REG_RPT_CNTRL             REG(0x00, 0xf0)     /* write */
 253# define RPT_CNTRL_REPEAT(x)      ((x) & 15)
 254#define REG_I2S_FORMAT            REG(0x00, 0xfc)     /* read/write */
 255# define I2S_FORMAT_PHILIPS       (0 << 0)
 256# define I2S_FORMAT_LEFT_J        (2 << 0)
 257# define I2S_FORMAT_RIGHT_J       (3 << 0)
 258#define REG_AIP_CLKSEL            REG(0x00, 0xfd)     /* write */
 259# define AIP_CLKSEL_AIP_SPDIF	  (0 << 3)
 260# define AIP_CLKSEL_AIP_I2S	  (1 << 3)
 261# define AIP_CLKSEL_FS_ACLK	  (0 << 0)
 262# define AIP_CLKSEL_FS_MCLK	  (1 << 0)
 263# define AIP_CLKSEL_FS_FS64SPDIF  (2 << 0)
 264
 265/* Page 02h: PLL settings */
 266#define REG_PLL_SERIAL_1          REG(0x02, 0x00)     /* read/write */
 267# define PLL_SERIAL_1_SRL_FDN     (1 << 0)
 268# define PLL_SERIAL_1_SRL_IZ(x)   (((x) & 3) << 1)
 269# define PLL_SERIAL_1_SRL_MAN_IZ  (1 << 6)
 270#define REG_PLL_SERIAL_2          REG(0x02, 0x01)     /* read/write */
 271# define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0)
 272# define PLL_SERIAL_2_SRL_PR(x)   (((x) & 0xf) << 4)
 273#define REG_PLL_SERIAL_3          REG(0x02, 0x02)     /* read/write */
 274# define PLL_SERIAL_3_SRL_CCIR    (1 << 0)
 275# define PLL_SERIAL_3_SRL_DE      (1 << 2)
 276# define PLL_SERIAL_3_SRL_PXIN_SEL (1 << 4)
 277#define REG_SERIALIZER            REG(0x02, 0x03)     /* read/write */
 278#define REG_BUFFER_OUT            REG(0x02, 0x04)     /* read/write */
 279#define REG_PLL_SCG1              REG(0x02, 0x05)     /* read/write */
 280#define REG_PLL_SCG2              REG(0x02, 0x06)     /* read/write */
 281#define REG_PLL_SCGN1             REG(0x02, 0x07)     /* read/write */
 282#define REG_PLL_SCGN2             REG(0x02, 0x08)     /* read/write */
 283#define REG_PLL_SCGR1             REG(0x02, 0x09)     /* read/write */
 284#define REG_PLL_SCGR2             REG(0x02, 0x0a)     /* read/write */
 285#define REG_AUDIO_DIV             REG(0x02, 0x0e)     /* read/write */
 286# define AUDIO_DIV_SERCLK_1       0
 287# define AUDIO_DIV_SERCLK_2       1
 288# define AUDIO_DIV_SERCLK_4       2
 289# define AUDIO_DIV_SERCLK_8       3
 290# define AUDIO_DIV_SERCLK_16      4
 291# define AUDIO_DIV_SERCLK_32      5
 292#define REG_SEL_CLK               REG(0x02, 0x11)     /* read/write */
 293# define SEL_CLK_SEL_CLK1         (1 << 0)
 294# define SEL_CLK_SEL_VRF_CLK(x)   (((x) & 3) << 1)
 295# define SEL_CLK_ENA_SC_CLK       (1 << 3)
 296#define REG_ANA_GENERAL           REG(0x02, 0x12)     /* read/write */
 297
 298
 299/* Page 09h: EDID Control */
 300#define REG_EDID_DATA_0           REG(0x09, 0x00)     /* read */
 301/* next 127 successive registers are the EDID block */
 302#define REG_EDID_CTRL             REG(0x09, 0xfa)     /* read/write */
 303#define REG_DDC_ADDR              REG(0x09, 0xfb)     /* read/write */
 304#define REG_DDC_OFFS              REG(0x09, 0xfc)     /* read/write */
 305#define REG_DDC_SEGM_ADDR         REG(0x09, 0xfd)     /* read/write */
 306#define REG_DDC_SEGM              REG(0x09, 0xfe)     /* read/write */
 307
 308
 309/* Page 10h: information frames and packets */
 310#define REG_IF1_HB0               REG(0x10, 0x20)     /* read/write */
 311#define REG_IF2_HB0               REG(0x10, 0x40)     /* read/write */
 312#define REG_IF3_HB0               REG(0x10, 0x60)     /* read/write */
 313#define REG_IF4_HB0               REG(0x10, 0x80)     /* read/write */
 314#define REG_IF5_HB0               REG(0x10, 0xa0)     /* read/write */
 315
 316
 317/* Page 11h: audio settings and content info packets */
 318#define REG_AIP_CNTRL_0           REG(0x11, 0x00)     /* read/write */
 319# define AIP_CNTRL_0_RST_FIFO     (1 << 0)
 320# define AIP_CNTRL_0_SWAP         (1 << 1)
 321# define AIP_CNTRL_0_LAYOUT       (1 << 2)
 322# define AIP_CNTRL_0_ACR_MAN      (1 << 5)
 323# define AIP_CNTRL_0_RST_CTS      (1 << 6)
 324#define REG_CA_I2S                REG(0x11, 0x01)     /* read/write */
 325# define CA_I2S_CA_I2S(x)         (((x) & 31) << 0)
 326# define CA_I2S_HBR_CHSTAT        (1 << 6)
 327#define REG_LATENCY_RD            REG(0x11, 0x04)     /* read/write */
 328#define REG_ACR_CTS_0             REG(0x11, 0x05)     /* read/write */
 329#define REG_ACR_CTS_1             REG(0x11, 0x06)     /* read/write */
 330#define REG_ACR_CTS_2             REG(0x11, 0x07)     /* read/write */
 331#define REG_ACR_N_0               REG(0x11, 0x08)     /* read/write */
 332#define REG_ACR_N_1               REG(0x11, 0x09)     /* read/write */
 333#define REG_ACR_N_2               REG(0x11, 0x0a)     /* read/write */
 334#define REG_CTS_N                 REG(0x11, 0x0c)     /* read/write */
 335# define CTS_N_K(x)               (((x) & 7) << 0)
 336# define CTS_N_M(x)               (((x) & 3) << 4)
 337#define REG_ENC_CNTRL             REG(0x11, 0x0d)     /* read/write */
 338# define ENC_CNTRL_RST_ENC        (1 << 0)
 339# define ENC_CNTRL_RST_SEL        (1 << 1)
 340# define ENC_CNTRL_CTL_CODE(x)    (((x) & 3) << 2)
 341#define REG_DIP_FLAGS             REG(0x11, 0x0e)     /* read/write */
 342# define DIP_FLAGS_ACR            (1 << 0)
 343# define DIP_FLAGS_GC             (1 << 1)
 344#define REG_DIP_IF_FLAGS          REG(0x11, 0x0f)     /* read/write */
 345# define DIP_IF_FLAGS_IF1         (1 << 1)
 346# define DIP_IF_FLAGS_IF2         (1 << 2)
 347# define DIP_IF_FLAGS_IF3         (1 << 3)
 348# define DIP_IF_FLAGS_IF4         (1 << 4)
 349# define DIP_IF_FLAGS_IF5         (1 << 5)
 350#define REG_CH_STAT_B(x)          REG(0x11, 0x14 + (x)) /* read/write */
 351
 352
 353/* Page 12h: HDCP and OTP */
 354#define REG_TX3                   REG(0x12, 0x9a)     /* read/write */
 355#define REG_TX4                   REG(0x12, 0x9b)     /* read/write */
 356# define TX4_PD_RAM               (1 << 1)
 357#define REG_TX33                  REG(0x12, 0xb8)     /* read/write */
 358# define TX33_HDMI                (1 << 1)
 359
 360
 361/* Page 13h: Gamut related metadata packets */
 362
 363
 364
 365/* CEC registers: (not paged)
 366 */
 367#define REG_CEC_INTSTATUS	  0xee		      /* read */
 368# define CEC_INTSTATUS_CEC	  (1 << 0)
 369# define CEC_INTSTATUS_HDMI	  (1 << 1)
 370#define REG_CEC_CAL_XOSC_CTRL1    0xf2
 371# define CEC_CAL_XOSC_CTRL1_ENA_CAL	BIT(0)
 372#define REG_CEC_DES_FREQ2         0xf5
 373# define CEC_DES_FREQ2_DIS_AUTOCAL BIT(7)
 374#define REG_CEC_CLK               0xf6
 375# define CEC_CLK_FRO              0x11
 376#define REG_CEC_FRO_IM_CLK_CTRL   0xfb                /* read/write */
 377# define CEC_FRO_IM_CLK_CTRL_GHOST_DIS (1 << 7)
 378# define CEC_FRO_IM_CLK_CTRL_ENA_OTP   (1 << 6)
 379# define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL (1 << 1)
 380# define CEC_FRO_IM_CLK_CTRL_FRO_DIV   (1 << 0)
 381#define REG_CEC_RXSHPDINTENA	  0xfc		      /* read/write */
 382#define REG_CEC_RXSHPDINT	  0xfd		      /* read */
 383# define CEC_RXSHPDINT_RXSENS     BIT(0)
 384# define CEC_RXSHPDINT_HPD        BIT(1)
 385#define REG_CEC_RXSHPDLEV         0xfe                /* read */
 386# define CEC_RXSHPDLEV_RXSENS     (1 << 0)
 387# define CEC_RXSHPDLEV_HPD        (1 << 1)
 388
 389#define REG_CEC_ENAMODS           0xff                /* read/write */
 390# define CEC_ENAMODS_EN_CEC_CLK   (1 << 7)
 391# define CEC_ENAMODS_DIS_FRO      (1 << 6)
 392# define CEC_ENAMODS_DIS_CCLK     (1 << 5)
 393# define CEC_ENAMODS_EN_RXSENS    (1 << 2)
 394# define CEC_ENAMODS_EN_HDMI      (1 << 1)
 395# define CEC_ENAMODS_EN_CEC       (1 << 0)
 396
 397
 398/* Device versions: */
 399#define TDA9989N2                 0x0101
 400#define TDA19989                  0x0201
 401#define TDA19989N2                0x0202
 402#define TDA19988                  0x0301
 403
 404static void
 405cec_write(struct tda998x_priv *priv, u16 addr, u8 val)
 406{
 407	u8 buf[] = {addr, val};
 408	struct i2c_msg msg = {
 409		.addr = priv->cec_addr,
 410		.len = 2,
 411		.buf = buf,
 412	};
 413	int ret;
 414
 415	ret = i2c_transfer(priv->hdmi->adapter, &msg, 1);
 416	if (ret < 0)
 417		dev_err(&priv->hdmi->dev, "Error %d writing to cec:0x%x\n",
 418			ret, addr);
 419}
 420
 421static u8
 422cec_read(struct tda998x_priv *priv, u8 addr)
 423{
 424	u8 val;
 425	struct i2c_msg msg[2] = {
 426		{
 427			.addr = priv->cec_addr,
 428			.len = 1,
 429			.buf = &addr,
 430		}, {
 431			.addr = priv->cec_addr,
 432			.flags = I2C_M_RD,
 433			.len = 1,
 434			.buf = &val,
 435		},
 436	};
 437	int ret;
 438
 439	ret = i2c_transfer(priv->hdmi->adapter, msg, ARRAY_SIZE(msg));
 440	if (ret < 0) {
 441		dev_err(&priv->hdmi->dev, "Error %d reading from cec:0x%x\n",
 442			ret, addr);
 443		val = 0;
 444	}
 445
 446	return val;
 447}
 448
 449static void cec_enamods(struct tda998x_priv *priv, u8 mods, bool enable)
 450{
 451	int val = cec_read(priv, REG_CEC_ENAMODS);
 452
 453	if (val < 0)
 454		return;
 455
 456	if (enable)
 457		val |= mods;
 458	else
 459		val &= ~mods;
 460
 461	cec_write(priv, REG_CEC_ENAMODS, val);
 462}
 463
 464static void tda998x_cec_set_calibration(struct tda998x_priv *priv, bool enable)
 465{
 466	if (enable) {
 467		u8 val;
 468
 469		cec_write(priv, 0xf3, 0xc0);
 470		cec_write(priv, 0xf4, 0xd4);
 471
 472		/* Enable automatic calibration mode */
 473		val = cec_read(priv, REG_CEC_DES_FREQ2);
 474		val &= ~CEC_DES_FREQ2_DIS_AUTOCAL;
 475		cec_write(priv, REG_CEC_DES_FREQ2, val);
 476
 477		/* Enable free running oscillator */
 478		cec_write(priv, REG_CEC_CLK, CEC_CLK_FRO);
 479		cec_enamods(priv, CEC_ENAMODS_DIS_FRO, false);
 480
 481		cec_write(priv, REG_CEC_CAL_XOSC_CTRL1,
 482			  CEC_CAL_XOSC_CTRL1_ENA_CAL);
 483	} else {
 484		cec_write(priv, REG_CEC_CAL_XOSC_CTRL1, 0);
 485	}
 486}
 487
 488/*
 489 * Calibration for the internal oscillator: we need to set calibration mode,
 490 * and then pulse the IRQ line low for a 10ms ± 1% period.
 491 */
 492static void tda998x_cec_calibration(struct tda998x_priv *priv)
 493{
 494	struct gpio_desc *calib = priv->calib;
 495
 496	mutex_lock(&priv->edid_mutex);
 497	if (priv->hdmi->irq > 0)
 498		disable_irq(priv->hdmi->irq);
 499	gpiod_direction_output(calib, 1);
 500	tda998x_cec_set_calibration(priv, true);
 501
 502	local_irq_disable();
 503	gpiod_set_value(calib, 0);
 504	mdelay(10);
 505	gpiod_set_value(calib, 1);
 506	local_irq_enable();
 507
 508	tda998x_cec_set_calibration(priv, false);
 509	gpiod_direction_input(calib);
 510	if (priv->hdmi->irq > 0)
 511		enable_irq(priv->hdmi->irq);
 512	mutex_unlock(&priv->edid_mutex);
 513}
 514
 515static int tda998x_cec_hook_init(void *data)
 516{
 517	struct tda998x_priv *priv = data;
 518	struct gpio_desc *calib;
 519
 520	calib = gpiod_get(&priv->hdmi->dev, "nxp,calib", GPIOD_ASIS);
 521	if (IS_ERR(calib)) {
 522		dev_warn(&priv->hdmi->dev, "failed to get calibration gpio: %ld\n",
 523			 PTR_ERR(calib));
 524		return PTR_ERR(calib);
 525	}
 526
 527	priv->calib = calib;
 528
 529	return 0;
 530}
 531
 532static void tda998x_cec_hook_exit(void *data)
 533{
 534	struct tda998x_priv *priv = data;
 535
 536	gpiod_put(priv->calib);
 537	priv->calib = NULL;
 538}
 539
 540static int tda998x_cec_hook_open(void *data)
 541{
 542	struct tda998x_priv *priv = data;
 543
 544	cec_enamods(priv, CEC_ENAMODS_EN_CEC_CLK | CEC_ENAMODS_EN_CEC, true);
 545	tda998x_cec_calibration(priv);
 546
 547	return 0;
 548}
 549
 550static void tda998x_cec_hook_release(void *data)
 551{
 552	struct tda998x_priv *priv = data;
 553
 554	cec_enamods(priv, CEC_ENAMODS_EN_CEC_CLK | CEC_ENAMODS_EN_CEC, false);
 555}
 556
 557static int
 558set_page(struct tda998x_priv *priv, u16 reg)
 559{
 560	if (REG2PAGE(reg) != priv->current_page) {
 561		struct i2c_client *client = priv->hdmi;
 562		u8 buf[] = {
 563				REG_CURPAGE, REG2PAGE(reg)
 564		};
 565		int ret = i2c_master_send(client, buf, sizeof(buf));
 566		if (ret < 0) {
 567			dev_err(&client->dev, "%s %04x err %d\n", __func__,
 568					reg, ret);
 569			return ret;
 570		}
 571
 572		priv->current_page = REG2PAGE(reg);
 573	}
 574	return 0;
 575}
 576
 577static int
 578reg_read_range(struct tda998x_priv *priv, u16 reg, char *buf, int cnt)
 579{
 580	struct i2c_client *client = priv->hdmi;
 581	u8 addr = REG2ADDR(reg);
 582	int ret;
 583
 584	mutex_lock(&priv->mutex);
 585	ret = set_page(priv, reg);
 586	if (ret < 0)
 587		goto out;
 588
 589	ret = i2c_master_send(client, &addr, sizeof(addr));
 590	if (ret < 0)
 591		goto fail;
 592
 593	ret = i2c_master_recv(client, buf, cnt);
 594	if (ret < 0)
 595		goto fail;
 596
 597	goto out;
 598
 599fail:
 600	dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg);
 601out:
 602	mutex_unlock(&priv->mutex);
 603	return ret;
 604}
 605
 606#define MAX_WRITE_RANGE_BUF 32
 607
 608static void
 609reg_write_range(struct tda998x_priv *priv, u16 reg, u8 *p, int cnt)
 610{
 611	struct i2c_client *client = priv->hdmi;
 612	/* This is the maximum size of the buffer passed in */
 613	u8 buf[MAX_WRITE_RANGE_BUF + 1];
 614	int ret;
 615
 616	if (cnt > MAX_WRITE_RANGE_BUF) {
 617		dev_err(&client->dev, "Fixed write buffer too small (%d)\n",
 618				MAX_WRITE_RANGE_BUF);
 619		return;
 620	}
 621
 622	buf[0] = REG2ADDR(reg);
 623	memcpy(&buf[1], p, cnt);
 624
 625	mutex_lock(&priv->mutex);
 626	ret = set_page(priv, reg);
 627	if (ret < 0)
 628		goto out;
 629
 630	ret = i2c_master_send(client, buf, cnt + 1);
 631	if (ret < 0)
 632		dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 633out:
 634	mutex_unlock(&priv->mutex);
 635}
 636
 637static int
 638reg_read(struct tda998x_priv *priv, u16 reg)
 639{
 640	u8 val = 0;
 641	int ret;
 642
 643	ret = reg_read_range(priv, reg, &val, sizeof(val));
 644	if (ret < 0)
 645		return ret;
 646	return val;
 647}
 648
 649static void
 650reg_write(struct tda998x_priv *priv, u16 reg, u8 val)
 651{
 652	struct i2c_client *client = priv->hdmi;
 653	u8 buf[] = {REG2ADDR(reg), val};
 654	int ret;
 655
 656	mutex_lock(&priv->mutex);
 657	ret = set_page(priv, reg);
 658	if (ret < 0)
 659		goto out;
 660
 661	ret = i2c_master_send(client, buf, sizeof(buf));
 662	if (ret < 0)
 663		dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 664out:
 665	mutex_unlock(&priv->mutex);
 666}
 667
 668static void
 669reg_write16(struct tda998x_priv *priv, u16 reg, u16 val)
 670{
 671	struct i2c_client *client = priv->hdmi;
 672	u8 buf[] = {REG2ADDR(reg), val >> 8, val};
 673	int ret;
 674
 675	mutex_lock(&priv->mutex);
 676	ret = set_page(priv, reg);
 677	if (ret < 0)
 678		goto out;
 679
 680	ret = i2c_master_send(client, buf, sizeof(buf));
 681	if (ret < 0)
 682		dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
 683out:
 684	mutex_unlock(&priv->mutex);
 685}
 686
 687static void
 688reg_set(struct tda998x_priv *priv, u16 reg, u8 val)
 689{
 690	int old_val;
 691
 692	old_val = reg_read(priv, reg);
 693	if (old_val >= 0)
 694		reg_write(priv, reg, old_val | val);
 695}
 696
 697static void
 698reg_clear(struct tda998x_priv *priv, u16 reg, u8 val)
 699{
 700	int old_val;
 701
 702	old_val = reg_read(priv, reg);
 703	if (old_val >= 0)
 704		reg_write(priv, reg, old_val & ~val);
 705}
 706
 707static void
 708tda998x_reset(struct tda998x_priv *priv)
 709{
 710	/* reset audio and i2c master: */
 711	reg_write(priv, REG_SOFTRESET, SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER);
 712	msleep(50);
 713	reg_write(priv, REG_SOFTRESET, 0);
 714	msleep(50);
 715
 716	/* reset transmitter: */
 717	reg_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
 718	reg_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
 719
 720	/* PLL registers common configuration */
 721	reg_write(priv, REG_PLL_SERIAL_1, 0x00);
 722	reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(1));
 723	reg_write(priv, REG_PLL_SERIAL_3, 0x00);
 724	reg_write(priv, REG_SERIALIZER,   0x00);
 725	reg_write(priv, REG_BUFFER_OUT,   0x00);
 726	reg_write(priv, REG_PLL_SCG1,     0x00);
 727	reg_write(priv, REG_AUDIO_DIV,    AUDIO_DIV_SERCLK_8);
 728	reg_write(priv, REG_SEL_CLK,      SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
 729	reg_write(priv, REG_PLL_SCGN1,    0xfa);
 730	reg_write(priv, REG_PLL_SCGN2,    0x00);
 731	reg_write(priv, REG_PLL_SCGR1,    0x5b);
 732	reg_write(priv, REG_PLL_SCGR2,    0x00);
 733	reg_write(priv, REG_PLL_SCG2,     0x10);
 734
 735	/* Write the default value MUX register */
 736	reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
 737}
 738
 739/*
 740 * The TDA998x has a problem when trying to read the EDID close to a
 741 * HPD assertion: it needs a delay of 100ms to avoid timing out while
 742 * trying to read EDID data.
 743 *
 744 * However, tda998x_connector_get_modes() may be called at any moment
 745 * after tda998x_connector_detect() indicates that we are connected, so
 746 * we need to delay probing modes in tda998x_connector_get_modes() after
 747 * we have seen a HPD inactive->active transition.  This code implements
 748 * that delay.
 749 */
 750static void tda998x_edid_delay_done(struct timer_list *t)
 751{
 752	struct tda998x_priv *priv = from_timer(priv, t, edid_delay_timer);
 753
 754	priv->edid_delay_active = false;
 755	wake_up(&priv->edid_delay_waitq);
 756	schedule_work(&priv->detect_work);
 757}
 758
 759static void tda998x_edid_delay_start(struct tda998x_priv *priv)
 760{
 761	priv->edid_delay_active = true;
 762	mod_timer(&priv->edid_delay_timer, jiffies + HZ/10);
 763}
 764
 765static int tda998x_edid_delay_wait(struct tda998x_priv *priv)
 766{
 767	return wait_event_killable(priv->edid_delay_waitq, !priv->edid_delay_active);
 768}
 769
 770/*
 771 * We need to run the KMS hotplug event helper outside of our threaded
 772 * interrupt routine as this can call back into our get_modes method,
 773 * which will want to make use of interrupts.
 774 */
 775static void tda998x_detect_work(struct work_struct *work)
 776{
 777	struct tda998x_priv *priv =
 778		container_of(work, struct tda998x_priv, detect_work);
 779	struct drm_device *dev = priv->connector.dev;
 780
 781	if (dev)
 782		drm_kms_helper_hotplug_event(dev);
 783}
 784
 785/*
 786 * only 2 interrupts may occur: screen plug/unplug and EDID read
 787 */
 788static irqreturn_t tda998x_irq_thread(int irq, void *data)
 789{
 790	struct tda998x_priv *priv = data;
 791	u8 sta, cec, lvl, flag0, flag1, flag2;
 792	bool handled = false;
 793
 794	sta = cec_read(priv, REG_CEC_INTSTATUS);
 795	if (sta & CEC_INTSTATUS_HDMI) {
 796		cec = cec_read(priv, REG_CEC_RXSHPDINT);
 797		lvl = cec_read(priv, REG_CEC_RXSHPDLEV);
 798		flag0 = reg_read(priv, REG_INT_FLAGS_0);
 799		flag1 = reg_read(priv, REG_INT_FLAGS_1);
 800		flag2 = reg_read(priv, REG_INT_FLAGS_2);
 801		DRM_DEBUG_DRIVER(
 802			"tda irq sta %02x cec %02x lvl %02x f0 %02x f1 %02x f2 %02x\n",
 803			sta, cec, lvl, flag0, flag1, flag2);
 804
 805		if (cec & CEC_RXSHPDINT_HPD) {
 806			if (lvl & CEC_RXSHPDLEV_HPD) {
 807				tda998x_edid_delay_start(priv);
 808			} else {
 809				schedule_work(&priv->detect_work);
 810				cec_notifier_phys_addr_invalidate(
 811						priv->cec_notify);
 812			}
 813
 814			handled = true;
 815		}
 816
 817		if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) {
 818			priv->wq_edid_wait = 0;
 819			wake_up(&priv->wq_edid);
 820			handled = true;
 821		}
 822	}
 823
 824	return IRQ_RETVAL(handled);
 825}
 826
 827static void
 828tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr,
 829		 union hdmi_infoframe *frame)
 830{
 831	u8 buf[MAX_WRITE_RANGE_BUF];
 832	ssize_t len;
 833
 834	len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
 835	if (len < 0) {
 836		dev_err(&priv->hdmi->dev,
 837			"hdmi_infoframe_pack() type=0x%02x failed: %zd\n",
 838			frame->any.type, len);
 839		return;
 840	}
 841
 842	reg_clear(priv, REG_DIP_IF_FLAGS, bit);
 843	reg_write_range(priv, addr, buf, len);
 844	reg_set(priv, REG_DIP_IF_FLAGS, bit);
 845}
 846
 847static void tda998x_write_aif(struct tda998x_priv *priv,
 848			      const struct hdmi_audio_infoframe *cea)
 849{
 850	union hdmi_infoframe frame;
 851
 852	frame.audio = *cea;
 853
 854	tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, &frame);
 855}
 856
 857static void
 858tda998x_write_avi(struct tda998x_priv *priv, const struct drm_display_mode *mode)
 859{
 860	union hdmi_infoframe frame;
 861
 862	drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
 863						 &priv->connector, mode);
 864	frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
 865	drm_hdmi_avi_infoframe_quant_range(&frame.avi, &priv->connector, mode,
 866					   priv->rgb_quant_range);
 867
 868	tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, &frame);
 869}
 870
 871static void tda998x_write_vsi(struct tda998x_priv *priv,
 872			      const struct drm_display_mode *mode)
 873{
 874	union hdmi_infoframe frame;
 875
 876	if (drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
 877							&priv->connector,
 878							mode))
 879		reg_clear(priv, REG_DIP_IF_FLAGS, DIP_IF_FLAGS_IF1);
 880	else
 881		tda998x_write_if(priv, DIP_IF_FLAGS_IF1, REG_IF1_HB0, &frame);
 882}
 883
 884/* Audio support */
 885
 886static const struct tda998x_audio_route tda998x_audio_route[AUDIO_ROUTE_NUM] = {
 887	[AUDIO_ROUTE_I2S] = {
 888		.ena_aclk = 1,
 889		.mux_ap = MUX_AP_SELECT_I2S,
 890		.aip_clksel = AIP_CLKSEL_AIP_I2S | AIP_CLKSEL_FS_ACLK,
 891	},
 892	[AUDIO_ROUTE_SPDIF] = {
 893		.ena_aclk = 0,
 894		.mux_ap = MUX_AP_SELECT_SPDIF,
 895		.aip_clksel = AIP_CLKSEL_AIP_SPDIF | AIP_CLKSEL_FS_FS64SPDIF,
 896	},
 897};
 898
 899/* Configure the TDA998x audio data and clock routing. */
 900static int tda998x_derive_routing(struct tda998x_priv *priv,
 901				  struct tda998x_audio_settings *s,
 902				  unsigned int route)
 903{
 904	s->route = &tda998x_audio_route[route];
 905	s->ena_ap = priv->audio_port_enable[route];
 906	if (s->ena_ap == 0) {
 907		dev_err(&priv->hdmi->dev, "no audio configuration found\n");
 908		return -EINVAL;
 909	}
 910
 911	return 0;
 912}
 913
 914/*
 915 * The audio clock divisor register controls a divider producing Audio_Clk_Out
 916 * from SERclk by dividing it by 2^n where 0 <= n <= 5.  We don't know what
 917 * Audio_Clk_Out or SERclk are. We guess SERclk is the same as TMDS clock.
 918 *
 919 * It seems that Audio_Clk_Out must be the smallest value that is greater
 920 * than 128*fs, otherwise audio does not function. There is some suggestion
 921 * that 126*fs is a better value.
 922 */
 923static u8 tda998x_get_adiv(struct tda998x_priv *priv, unsigned int fs)
 924{
 925	unsigned long min_audio_clk = fs * 128;
 926	unsigned long ser_clk = priv->tmds_clock * 1000;
 927	u8 adiv;
 928
 929	for (adiv = AUDIO_DIV_SERCLK_32; adiv != AUDIO_DIV_SERCLK_1; adiv--)
 930		if (ser_clk > min_audio_clk << adiv)
 931			break;
 932
 933	dev_dbg(&priv->hdmi->dev,
 934		"ser_clk=%luHz fs=%uHz min_aclk=%luHz adiv=%d\n",
 935		ser_clk, fs, min_audio_clk, adiv);
 936
 937	return adiv;
 938}
 939
 940/*
 941 * In auto-CTS mode, the TDA998x uses a "measured time stamp" counter to
 942 * generate the CTS value.  It appears that the "measured time stamp" is
 943 * the number of TDMS clock cycles within a number of audio input clock
 944 * cycles defined by the k and N parameters defined below, in a similar
 945 * way to that which is set out in the CTS generation in the HDMI spec.
 946 *
 947 *  tmdsclk ----> mts -> /m ---> CTS
 948 *                 ^
 949 *  sclk -> /k -> /N
 950 *
 951 * CTS = mts / m, where m is 2^M.
 952 * /k is a divider based on the K value below, K+1 for K < 4, or 8 for K >= 4
 953 * /N is a divider based on the HDMI specified N value.
 954 *
 955 * This produces the following equation:
 956 *  CTS = tmds_clock * k * N / (sclk * m)
 957 *
 958 * When combined with the sink-side equation, and realising that sclk is
 959 * bclk_ratio * fs, we end up with:
 960 *  k = m * bclk_ratio / 128.
 961 *
 962 * Note: S/PDIF always uses a bclk_ratio of 64.
 963 */
 964static int tda998x_derive_cts_n(struct tda998x_priv *priv,
 965				struct tda998x_audio_settings *settings,
 966				unsigned int ratio)
 967{
 968	switch (ratio) {
 969	case 16:
 970		settings->cts_n = CTS_N_M(3) | CTS_N_K(0);
 971		break;
 972	case 32:
 973		settings->cts_n = CTS_N_M(3) | CTS_N_K(1);
 974		break;
 975	case 48:
 976		settings->cts_n = CTS_N_M(3) | CTS_N_K(2);
 977		break;
 978	case 64:
 979		settings->cts_n = CTS_N_M(3) | CTS_N_K(3);
 980		break;
 981	case 128:
 982		settings->cts_n = CTS_N_M(0) | CTS_N_K(0);
 983		break;
 984	default:
 985		dev_err(&priv->hdmi->dev, "unsupported bclk ratio %ufs\n",
 986			ratio);
 987		return -EINVAL;
 988	}
 989	return 0;
 990}
 991
 992static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
 993{
 994	if (on) {
 995		reg_set(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
 996		reg_clear(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
 997		reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
 998	} else {
 999		reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
1000	}
1001}
1002
1003static void tda998x_configure_audio(struct tda998x_priv *priv)
1004{
1005	const struct tda998x_audio_settings *settings = &priv->audio;
1006	u8 buf[6], adiv;
1007	u32 n;
1008
1009	/* If audio is not configured, there is nothing to do. */
1010	if (settings->ena_ap == 0)
1011		return;
1012
1013	adiv = tda998x_get_adiv(priv, settings->sample_rate);
1014
1015	/* Enable audio ports */
1016	reg_write(priv, REG_ENA_AP, settings->ena_ap);
1017	reg_write(priv, REG_ENA_ACLK, settings->route->ena_aclk);
1018	reg_write(priv, REG_MUX_AP, settings->route->mux_ap);
1019	reg_write(priv, REG_I2S_FORMAT, settings->i2s_format);
1020	reg_write(priv, REG_AIP_CLKSEL, settings->route->aip_clksel);
1021	reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT |
1022					AIP_CNTRL_0_ACR_MAN);	/* auto CTS */
1023	reg_write(priv, REG_CTS_N, settings->cts_n);
1024	reg_write(priv, REG_AUDIO_DIV, adiv);
1025
1026	/*
1027	 * This is the approximate value of N, which happens to be
1028	 * the recommended values for non-coherent clocks.
1029	 */
1030	n = 128 * settings->sample_rate / 1000;
1031
1032	/* Write the CTS and N values */
1033	buf[0] = 0x44;
1034	buf[1] = 0x42;
1035	buf[2] = 0x01;
1036	buf[3] = n;
1037	buf[4] = n >> 8;
1038	buf[5] = n >> 16;
1039	reg_write_range(priv, REG_ACR_CTS_0, buf, 6);
1040
1041	/* Reset CTS generator */
1042	reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
1043	reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
1044
1045	/* Write the channel status
1046	 * The REG_CH_STAT_B-registers skip IEC958 AES2 byte, because
1047	 * there is a separate register for each I2S wire.
1048	 */
1049	buf[0] = settings->status[0];
1050	buf[1] = settings->status[1];
1051	buf[2] = settings->status[3];
1052	buf[3] = settings->status[4];
1053	reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);
1054
1055	tda998x_audio_mute(priv, true);
1056	msleep(20);
1057	tda998x_audio_mute(priv, false);
1058
1059	tda998x_write_aif(priv, &settings->cea);
1060}
1061
1062static int tda998x_audio_hw_params(struct device *dev, void *data,
1063				   struct hdmi_codec_daifmt *daifmt,
1064				   struct hdmi_codec_params *params)
1065{
1066	struct tda998x_priv *priv = dev_get_drvdata(dev);
1067	unsigned int bclk_ratio;
1068	bool spdif = daifmt->fmt == HDMI_SPDIF;
1069	int ret;
1070	struct tda998x_audio_settings audio = {
1071		.sample_rate = params->sample_rate,
1072		.cea = params->cea,
1073	};
1074
1075	memcpy(audio.status, params->iec.status,
1076	       min(sizeof(audio.status), sizeof(params->iec.status)));
1077
1078	switch (daifmt->fmt) {
1079	case HDMI_I2S:
1080		audio.i2s_format = I2S_FORMAT_PHILIPS;
1081		break;
1082	case HDMI_LEFT_J:
1083		audio.i2s_format = I2S_FORMAT_LEFT_J;
1084		break;
1085	case HDMI_RIGHT_J:
1086		audio.i2s_format = I2S_FORMAT_RIGHT_J;
1087		break;
1088	case HDMI_SPDIF:
1089		audio.i2s_format = 0;
1090		break;
1091	default:
1092		dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
1093		return -EINVAL;
1094	}
1095
1096	if (!spdif &&
1097	    (daifmt->bit_clk_inv || daifmt->frame_clk_inv ||
1098	     daifmt->bit_clk_master || daifmt->frame_clk_master)) {
1099		dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__,
1100			daifmt->bit_clk_inv, daifmt->frame_clk_inv,
1101			daifmt->bit_clk_master,
1102			daifmt->frame_clk_master);
1103		return -EINVAL;
1104	}
1105
1106	ret = tda998x_derive_routing(priv, &audio, AUDIO_ROUTE_I2S + spdif);
1107	if (ret < 0)
1108		return ret;
1109
1110	bclk_ratio = spdif ? 64 : params->sample_width * 2;
1111	ret = tda998x_derive_cts_n(priv, &audio, bclk_ratio);
1112	if (ret < 0)
1113		return ret;
1114
1115	mutex_lock(&priv->audio_mutex);
1116	priv->audio = audio;
1117	if (priv->supports_infoframes && priv->sink_has_audio)
1118		tda998x_configure_audio(priv);
1119	mutex_unlock(&priv->audio_mutex);
1120
1121	return 0;
1122}
1123
1124static void tda998x_audio_shutdown(struct device *dev, void *data)
1125{
1126	struct tda998x_priv *priv = dev_get_drvdata(dev);
1127
1128	mutex_lock(&priv->audio_mutex);
1129
1130	reg_write(priv, REG_ENA_AP, 0);
1131	priv->audio.ena_ap = 0;
1132
1133	mutex_unlock(&priv->audio_mutex);
1134}
1135
1136static int tda998x_audio_mute_stream(struct device *dev, void *data,
1137				     bool enable, int direction)
1138{
1139	struct tda998x_priv *priv = dev_get_drvdata(dev);
1140
1141	mutex_lock(&priv->audio_mutex);
1142
1143	tda998x_audio_mute(priv, enable);
1144
1145	mutex_unlock(&priv->audio_mutex);
1146	return 0;
1147}
1148
1149static int tda998x_audio_get_eld(struct device *dev, void *data,
1150				 uint8_t *buf, size_t len)
1151{
1152	struct tda998x_priv *priv = dev_get_drvdata(dev);
1153
1154	mutex_lock(&priv->audio_mutex);
1155	memcpy(buf, priv->connector.eld,
1156	       min(sizeof(priv->connector.eld), len));
1157	mutex_unlock(&priv->audio_mutex);
1158
1159	return 0;
1160}
1161
1162static const struct hdmi_codec_ops audio_codec_ops = {
1163	.hw_params = tda998x_audio_hw_params,
1164	.audio_shutdown = tda998x_audio_shutdown,
1165	.mute_stream = tda998x_audio_mute_stream,
1166	.get_eld = tda998x_audio_get_eld,
1167	.no_capture_mute = 1,
1168};
1169
1170static int tda998x_audio_codec_init(struct tda998x_priv *priv,
1171				    struct device *dev)
1172{
1173	struct hdmi_codec_pdata codec_data = {
1174		.ops = &audio_codec_ops,
1175		.max_i2s_channels = 2,
1176	};
1177
1178	if (priv->audio_port_enable[AUDIO_ROUTE_I2S])
1179		codec_data.i2s = 1;
1180	if (priv->audio_port_enable[AUDIO_ROUTE_SPDIF])
1181		codec_data.spdif = 1;
1182
1183	priv->audio_pdev = platform_device_register_data(
1184		dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
1185		&codec_data, sizeof(codec_data));
1186
1187	return PTR_ERR_OR_ZERO(priv->audio_pdev);
1188}
1189
1190/* DRM connector functions */
1191
1192static enum drm_connector_status
1193tda998x_connector_detect(struct drm_connector *connector, bool force)
1194{
1195	struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1196	u8 val = cec_read(priv, REG_CEC_RXSHPDLEV);
1197
1198	return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected :
1199			connector_status_disconnected;
1200}
1201
1202static void tda998x_connector_destroy(struct drm_connector *connector)
1203{
1204	drm_connector_cleanup(connector);
1205}
1206
1207static const struct drm_connector_funcs tda998x_connector_funcs = {
1208	.reset = drm_atomic_helper_connector_reset,
1209	.fill_modes = drm_helper_probe_single_connector_modes,
1210	.detect = tda998x_connector_detect,
1211	.destroy = tda998x_connector_destroy,
1212	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1213	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1214};
1215
1216static int read_edid_block(void *data, u8 *buf, unsigned int blk, size_t length)
1217{
1218	struct tda998x_priv *priv = data;
1219	u8 offset, segptr;
1220	int ret, i;
1221
1222	offset = (blk & 1) ? 128 : 0;
1223	segptr = blk / 2;
1224
1225	mutex_lock(&priv->edid_mutex);
1226
1227	reg_write(priv, REG_DDC_ADDR, 0xa0);
1228	reg_write(priv, REG_DDC_OFFS, offset);
1229	reg_write(priv, REG_DDC_SEGM_ADDR, 0x60);
1230	reg_write(priv, REG_DDC_SEGM, segptr);
1231
1232	/* enable reading EDID: */
1233	priv->wq_edid_wait = 1;
1234	reg_write(priv, REG_EDID_CTRL, 0x1);
1235
1236	/* flag must be cleared by sw: */
1237	reg_write(priv, REG_EDID_CTRL, 0x0);
1238
1239	/* wait for block read to complete: */
1240	if (priv->hdmi->irq) {
1241		i = wait_event_timeout(priv->wq_edid,
1242					!priv->wq_edid_wait,
1243					msecs_to_jiffies(100));
1244		if (i < 0) {
1245			dev_err(&priv->hdmi->dev, "read edid wait err %d\n", i);
1246			ret = i;
1247			goto failed;
1248		}
1249	} else {
1250		for (i = 100; i > 0; i--) {
1251			msleep(1);
1252			ret = reg_read(priv, REG_INT_FLAGS_2);
1253			if (ret < 0)
1254				goto failed;
1255			if (ret & INT_FLAGS_2_EDID_BLK_RD)
1256				break;
1257		}
1258	}
1259
1260	if (i == 0) {
1261		dev_err(&priv->hdmi->dev, "read edid timeout\n");
1262		ret = -ETIMEDOUT;
1263		goto failed;
1264	}
1265
1266	ret = reg_read_range(priv, REG_EDID_DATA_0, buf, length);
1267	if (ret != length) {
1268		dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n",
1269			blk, ret);
1270		goto failed;
1271	}
1272
1273	ret = 0;
1274
1275 failed:
1276	mutex_unlock(&priv->edid_mutex);
1277	return ret;
1278}
1279
1280static int tda998x_connector_get_modes(struct drm_connector *connector)
1281{
1282	struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1283	struct edid *edid;
1284	int n;
1285
1286	/*
1287	 * If we get killed while waiting for the HPD timeout, return
1288	 * no modes found: we are not in a restartable path, so we
1289	 * can't handle signals gracefully.
1290	 */
1291	if (tda998x_edid_delay_wait(priv))
1292		return 0;
1293
1294	if (priv->rev == TDA19988)
1295		reg_clear(priv, REG_TX4, TX4_PD_RAM);
1296
1297	edid = drm_do_get_edid(connector, read_edid_block, priv);
1298
1299	if (priv->rev == TDA19988)
1300		reg_set(priv, REG_TX4, TX4_PD_RAM);
1301
1302	if (!edid) {
1303		dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
1304		return 0;
1305	}
1306
1307	drm_connector_update_edid_property(connector, edid);
1308	cec_notifier_set_phys_addr_from_edid(priv->cec_notify, edid);
1309
1310	mutex_lock(&priv->audio_mutex);
1311	n = drm_add_edid_modes(connector, edid);
1312	priv->sink_has_audio = drm_detect_monitor_audio(edid);
1313	mutex_unlock(&priv->audio_mutex);
1314
1315	kfree(edid);
1316
1317	return n;
1318}
1319
1320static struct drm_encoder *
1321tda998x_connector_best_encoder(struct drm_connector *connector)
1322{
1323	struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
1324
1325	return priv->bridge.encoder;
1326}
1327
1328static
1329const struct drm_connector_helper_funcs tda998x_connector_helper_funcs = {
1330	.get_modes = tda998x_connector_get_modes,
1331	.best_encoder = tda998x_connector_best_encoder,
1332};
1333
1334static int tda998x_connector_init(struct tda998x_priv *priv,
1335				  struct drm_device *drm)
1336{
1337	struct drm_connector *connector = &priv->connector;
1338	int ret;
1339
1340	connector->interlace_allowed = 1;
1341
1342	if (priv->hdmi->irq)
1343		connector->polled = DRM_CONNECTOR_POLL_HPD;
1344	else
1345		connector->polled = DRM_CONNECTOR_POLL_CONNECT |
1346			DRM_CONNECTOR_POLL_DISCONNECT;
1347
1348	drm_connector_helper_add(connector, &tda998x_connector_helper_funcs);
1349	ret = drm_connector_init(drm, connector, &tda998x_connector_funcs,
1350				 DRM_MODE_CONNECTOR_HDMIA);
1351	if (ret)
1352		return ret;
1353
1354	drm_connector_attach_encoder(&priv->connector,
1355				     priv->bridge.encoder);
1356
1357	return 0;
1358}
1359
1360/* DRM bridge functions */
1361
1362static int tda998x_bridge_attach(struct drm_bridge *bridge,
1363				 enum drm_bridge_attach_flags flags)
1364{
1365	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1366
1367	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
1368		DRM_ERROR("Fix bridge driver to make connector optional!");
1369		return -EINVAL;
1370	}
1371
1372	return tda998x_connector_init(priv, bridge->dev);
1373}
1374
1375static void tda998x_bridge_detach(struct drm_bridge *bridge)
1376{
1377	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1378
1379	drm_connector_cleanup(&priv->connector);
1380}
1381
1382static enum drm_mode_status tda998x_bridge_mode_valid(struct drm_bridge *bridge,
1383				     const struct drm_display_info *info,
1384				     const struct drm_display_mode *mode)
1385{
1386	/* TDA19988 dotclock can go up to 165MHz */
1387	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1388
1389	if (mode->clock > ((priv->rev == TDA19988) ? 165000 : 150000))
1390		return MODE_CLOCK_HIGH;
1391	if (mode->htotal >= BIT(13))
1392		return MODE_BAD_HVALUE;
1393	if (mode->vtotal >= BIT(11))
1394		return MODE_BAD_VVALUE;
1395	return MODE_OK;
1396}
1397
1398static void tda998x_bridge_enable(struct drm_bridge *bridge)
1399{
1400	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1401
1402	if (!priv->is_on) {
1403		/* enable video ports, audio will be enabled later */
1404		reg_write(priv, REG_ENA_VP_0, 0xff);
1405		reg_write(priv, REG_ENA_VP_1, 0xff);
1406		reg_write(priv, REG_ENA_VP_2, 0xff);
1407		/* set muxing after enabling ports: */
1408		reg_write(priv, REG_VIP_CNTRL_0, priv->vip_cntrl_0);
1409		reg_write(priv, REG_VIP_CNTRL_1, priv->vip_cntrl_1);
1410		reg_write(priv, REG_VIP_CNTRL_2, priv->vip_cntrl_2);
1411
1412		priv->is_on = true;
1413	}
1414}
1415
1416static void tda998x_bridge_disable(struct drm_bridge *bridge)
1417{
1418	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1419
1420	if (priv->is_on) {
1421		/* disable video ports */
1422		reg_write(priv, REG_ENA_VP_0, 0x00);
1423		reg_write(priv, REG_ENA_VP_1, 0x00);
1424		reg_write(priv, REG_ENA_VP_2, 0x00);
1425
1426		priv->is_on = false;
1427	}
1428}
1429
1430static void tda998x_bridge_mode_set(struct drm_bridge *bridge,
1431				    const struct drm_display_mode *mode,
1432				    const struct drm_display_mode *adjusted_mode)
1433{
1434	struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
1435	unsigned long tmds_clock;
1436	u16 ref_pix, ref_line, n_pix, n_line;
1437	u16 hs_pix_s, hs_pix_e;
1438	u16 vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
1439	u16 vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e;
1440	u16 vwin1_line_s, vwin1_line_e;
1441	u16 vwin2_line_s, vwin2_line_e;
1442	u16 de_pix_s, de_pix_e;
1443	u8 reg, div, rep, sel_clk;
1444
1445	/*
1446	 * Since we are "computer" like, our source invariably produces
1447	 * full-range RGB.  If the monitor supports full-range, then use
1448	 * it, otherwise reduce to limited-range.
1449	 */
1450	priv->rgb_quant_range =
1451		priv->connector.display_info.rgb_quant_range_selectable ?
1452		HDMI_QUANTIZATION_RANGE_FULL :
1453		drm_default_rgb_quant_range(adjusted_mode);
1454
1455	/*
1456	 * Internally TDA998x is using ITU-R BT.656 style sync but
1457	 * we get VESA style sync. TDA998x is using a reference pixel
1458	 * relative to ITU to sync to the input frame and for output
1459	 * sync generation. Currently, we are using reference detection
1460	 * from HS/VS, i.e. REFPIX/REFLINE denote frame start sync point
1461	 * which is position of rising VS with coincident rising HS.
1462	 *
1463	 * Now there is some issues to take care of:
1464	 * - HDMI data islands require sync-before-active
1465	 * - TDA998x register values must be > 0 to be enabled
1466	 * - REFLINE needs an additional offset of +1
1467	 * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB
1468	 *
1469	 * So we add +1 to all horizontal and vertical register values,
1470	 * plus an additional +3 for REFPIX as we are using RGB input only.
1471	 */
1472	n_pix        = mode->htotal;
1473	n_line       = mode->vtotal;
1474
1475	hs_pix_e     = mode->hsync_end - mode->hdisplay;
1476	hs_pix_s     = mode->hsync_start - mode->hdisplay;
1477	de_pix_e     = mode->htotal;
1478	de_pix_s     = mode->htotal - mode->hdisplay;
1479	ref_pix      = 3 + hs_pix_s;
1480
1481	/*
1482	 * Attached LCD controllers may generate broken sync. Allow
1483	 * those to adjust the position of the rising VS edge by adding
1484	 * HSKEW to ref_pix.
1485	 */
1486	if (adjusted_mode->flags & DRM_MODE_FLAG_HSKEW)
1487		ref_pix += adjusted_mode->hskew;
1488
1489	if ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0) {
1490		ref_line     = 1 + mode->vsync_start - mode->vdisplay;
1491		vwin1_line_s = mode->vtotal - mode->vdisplay - 1;
1492		vwin1_line_e = vwin1_line_s + mode->vdisplay;
1493		vs1_pix_s    = vs1_pix_e = hs_pix_s;
1494		vs1_line_s   = mode->vsync_start - mode->vdisplay;
1495		vs1_line_e   = vs1_line_s +
1496			       mode->vsync_end - mode->vsync_start;
1497		vwin2_line_s = vwin2_line_e = 0;
1498		vs2_pix_s    = vs2_pix_e  = 0;
1499		vs2_line_s   = vs2_line_e = 0;
1500	} else {
1501		ref_line     = 1 + (mode->vsync_start - mode->vdisplay)/2;
1502		vwin1_line_s = (mode->vtotal - mode->vdisplay)/2;
1503		vwin1_line_e = vwin1_line_s + mode->vdisplay/2;
1504		vs1_pix_s    = vs1_pix_e = hs_pix_s;
1505		vs1_line_s   = (mode->vsync_start - mode->vdisplay)/2;
1506		vs1_line_e   = vs1_line_s +
1507			       (mode->vsync_end - mode->vsync_start)/2;
1508		vwin2_line_s = vwin1_line_s + mode->vtotal/2;
1509		vwin2_line_e = vwin2_line_s + mode->vdisplay/2;
1510		vs2_pix_s    = vs2_pix_e = hs_pix_s + mode->htotal/2;
1511		vs2_line_s   = vs1_line_s + mode->vtotal/2 ;
1512		vs2_line_e   = vs2_line_s +
1513			       (mode->vsync_end - mode->vsync_start)/2;
1514	}
1515
1516	/*
1517	 * Select pixel repeat depending on the double-clock flag
1518	 * (which means we have to repeat each pixel once.)
1519	 */
1520	rep = mode->flags & DRM_MODE_FLAG_DBLCLK ? 1 : 0;
1521	sel_clk = SEL_CLK_ENA_SC_CLK | SEL_CLK_SEL_CLK1 |
1522		  SEL_CLK_SEL_VRF_CLK(rep ? 2 : 0);
1523
1524	/* the TMDS clock is scaled up by the pixel repeat */
1525	tmds_clock = mode->clock * (1 + rep);
1526
1527	/*
1528	 * The divisor is power-of-2. The TDA9983B datasheet gives
1529	 * this as ranges of Msample/s, which is 10x the TMDS clock:
1530	 *   0 - 800 to 1500 Msample/s
1531	 *   1 - 400 to 800 Msample/s
1532	 *   2 - 200 to 400 Msample/s
1533	 *   3 - as 2 above
1534	 */
1535	for (div = 0; div < 3; div++)
1536		if (80000 >> div <= tmds_clock)
1537			break;
1538
1539	mutex_lock(&priv->audio_mutex);
1540
1541	priv->tmds_clock = tmds_clock;
1542
1543	/* mute the audio FIFO: */
1544	reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
1545
1546	/* set HDMI HDCP mode off: */
1547	reg_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS);
1548	reg_clear(priv, REG_TX33, TX33_HDMI);
1549	reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0));
1550
1551	/* no pre-filter or interpolator: */
1552	reg_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) |
1553			HVF_CNTRL_0_INTPOL(0));
1554	reg_set(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_PREFILT);
1555	reg_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0));
1556	reg_write(priv, REG_VIP_CNTRL_4, VIP_CNTRL_4_BLANKIT(0) |
1557			VIP_CNTRL_4_BLC(0));
1558
1559	reg_clear(priv, REG_PLL_SERIAL_1, PLL_SERIAL_1_SRL_MAN_IZ);
1560	reg_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR |
1561					  PLL_SERIAL_3_SRL_DE);
1562	reg_write(priv, REG_SERIALIZER, 0);
1563	reg_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0));
1564
1565	reg_write(priv, REG_RPT_CNTRL, RPT_CNTRL_REPEAT(rep));
1566	reg_write(priv, REG_SEL_CLK, sel_clk);
1567	reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) |
1568			PLL_SERIAL_2_SRL_PR(rep));
1569
1570	/* set color matrix according to output rgb quant range */
1571	if (priv->rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) {
1572		static u8 tda998x_full_to_limited_range[] = {
1573			MAT_CONTRL_MAT_SC(2),
1574			0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1575			0x03, 0x6f, 0x00, 0x00, 0x00, 0x00,
1576			0x00, 0x00, 0x03, 0x6f, 0x00, 0x00,
1577			0x00, 0x00, 0x00, 0x00, 0x03, 0x6f,
1578			0x00, 0x40, 0x00, 0x40, 0x00, 0x40
1579		};
1580		reg_clear(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_CSC);
1581		reg_write_range(priv, REG_MAT_CONTRL,
1582				tda998x_full_to_limited_range,
1583				sizeof(tda998x_full_to_limited_range));
1584	} else {
1585		reg_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP |
1586					MAT_CONTRL_MAT_SC(1));
1587		reg_set(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_CSC);
1588	}
1589
1590	/* set BIAS tmds value: */
1591	reg_write(priv, REG_ANA_GENERAL, 0x09);
1592
1593	/*
1594	 * Sync on rising HSYNC/VSYNC
1595	 */
1596	reg = VIP_CNTRL_3_SYNC_HS;
1597
1598	/*
1599	 * TDA19988 requires high-active sync at input stage,
1600	 * so invert low-active sync provided by master encoder here
1601	 */
1602	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1603		reg |= VIP_CNTRL_3_H_TGL;
1604	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1605		reg |= VIP_CNTRL_3_V_TGL;
1606	reg_write(priv, REG_VIP_CNTRL_3, reg);
1607
1608	reg_write(priv, REG_VIDFORMAT, 0x00);
1609	reg_write16(priv, REG_REFPIX_MSB, ref_pix);
1610	reg_write16(priv, REG_REFLINE_MSB, ref_line);
1611	reg_write16(priv, REG_NPIX_MSB, n_pix);
1612	reg_write16(priv, REG_NLINE_MSB, n_line);
1613	reg_write16(priv, REG_VS_LINE_STRT_1_MSB, vs1_line_s);
1614	reg_write16(priv, REG_VS_PIX_STRT_1_MSB, vs1_pix_s);
1615	reg_write16(priv, REG_VS_LINE_END_1_MSB, vs1_line_e);
1616	reg_write16(priv, REG_VS_PIX_END_1_MSB, vs1_pix_e);
1617	reg_write16(priv, REG_VS_LINE_STRT_2_MSB, vs2_line_s);
1618	reg_write16(priv, REG_VS_PIX_STRT_2_MSB, vs2_pix_s);
1619	reg_write16(priv, REG_VS_LINE_END_2_MSB, vs2_line_e);
1620	reg_write16(priv, REG_VS_PIX_END_2_MSB, vs2_pix_e);
1621	reg_write16(priv, REG_HS_PIX_START_MSB, hs_pix_s);
1622	reg_write16(priv, REG_HS_PIX_STOP_MSB, hs_pix_e);
1623	reg_write16(priv, REG_VWIN_START_1_MSB, vwin1_line_s);
1624	reg_write16(priv, REG_VWIN_END_1_MSB, vwin1_line_e);
1625	reg_write16(priv, REG_VWIN_START_2_MSB, vwin2_line_s);
1626	reg_write16(priv, REG_VWIN_END_2_MSB, vwin2_line_e);
1627	reg_write16(priv, REG_DE_START_MSB, de_pix_s);
1628	reg_write16(priv, REG_DE_STOP_MSB, de_pix_e);
1629
1630	if (priv->rev == TDA19988) {
1631		/* let incoming pixels fill the active space (if any) */
1632		reg_write(priv, REG_ENABLE_SPACE, 0x00);
1633	}
1634
1635	/*
1636	 * Always generate sync polarity relative to input sync and
1637	 * revert input stage toggled sync at output stage
1638	 */
1639	reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN;
1640	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1641		reg |= TBG_CNTRL_1_H_TGL;
1642	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1643		reg |= TBG_CNTRL_1_V_TGL;
1644	reg_write(priv, REG_TBG_CNTRL_1, reg);
1645
1646	/* must be last register set: */
1647	reg_write(priv, REG_TBG_CNTRL_0, 0);
1648
1649	/* CEA-861B section 6 says that:
1650	 * CEA version 1 (CEA-861) has no support for infoframes.
1651	 * CEA version 2 (CEA-861A) supports version 1 AVI infoframes,
1652	 * and optional basic audio.
1653	 * CEA version 3 (CEA-861B) supports version 1 and 2 AVI infoframes,
1654	 * and optional digital audio, with audio infoframes.
1655	 *
1656	 * Since we only support generation of version 2 AVI infoframes,
1657	 * ignore CEA version 2 and below (iow, behave as if we're a
1658	 * CEA-861 source.)
1659	 */
1660	priv->supports_infoframes = priv->connector.display_info.cea_rev >= 3;
1661
1662	if (priv->supports_infoframes) {
1663		/* We need to turn HDMI HDCP stuff on to get audio through */
1664		reg &= ~TBG_CNTRL_1_DWIN_DIS;
1665		reg_write(priv, REG_TBG_CNTRL_1, reg);
1666		reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1));
1667		reg_set(priv, REG_TX33, TX33_HDMI);
1668
1669		tda998x_write_avi(priv, adjusted_mode);
1670		tda998x_write_vsi(priv, adjusted_mode);
1671
1672		if (priv->sink_has_audio)
1673			tda998x_configure_audio(priv);
1674	}
1675
1676	mutex_unlock(&priv->audio_mutex);
1677}
1678
1679static const struct drm_bridge_funcs tda998x_bridge_funcs = {
1680	.attach = tda998x_bridge_attach,
1681	.detach = tda998x_bridge_detach,
1682	.mode_valid = tda998x_bridge_mode_valid,
1683	.disable = tda998x_bridge_disable,
1684	.mode_set = tda998x_bridge_mode_set,
1685	.enable = tda998x_bridge_enable,
1686};
1687
1688/* I2C driver functions */
1689
1690static int tda998x_get_audio_ports(struct tda998x_priv *priv,
1691				   struct device_node *np)
1692{
1693	const u32 *port_data;
1694	u32 size;
1695	int i;
1696
1697	port_data = of_get_property(np, "audio-ports", &size);
1698	if (!port_data)
1699		return 0;
1700
1701	size /= sizeof(u32);
1702	if (size > 2 * ARRAY_SIZE(priv->audio_port_enable) || size % 2 != 0) {
1703		dev_err(&priv->hdmi->dev,
1704			"Bad number of elements in audio-ports dt-property\n");
1705		return -EINVAL;
1706	}
1707
1708	size /= 2;
1709
1710	for (i = 0; i < size; i++) {
1711		unsigned int route;
1712		u8 afmt = be32_to_cpup(&port_data[2*i]);
1713		u8 ena_ap = be32_to_cpup(&port_data[2*i+1]);
1714
1715		switch (afmt) {
1716		case AFMT_I2S:
1717			route = AUDIO_ROUTE_I2S;
1718			break;
1719		case AFMT_SPDIF:
1720			route = AUDIO_ROUTE_SPDIF;
1721			break;
1722		default:
1723			dev_err(&priv->hdmi->dev,
1724				"Bad audio format %u\n", afmt);
1725			return -EINVAL;
1726		}
1727
1728		if (!ena_ap) {
1729			dev_err(&priv->hdmi->dev, "invalid zero port config\n");
1730			continue;
1731		}
1732
1733		if (priv->audio_port_enable[route]) {
1734			dev_err(&priv->hdmi->dev,
1735				"%s format already configured\n",
1736				route == AUDIO_ROUTE_SPDIF ? "SPDIF" : "I2S");
1737			return -EINVAL;
1738		}
1739
1740		priv->audio_port_enable[route] = ena_ap;
1741	}
1742	return 0;
1743}
1744
1745static int tda998x_set_config(struct tda998x_priv *priv,
1746			      const struct tda998x_encoder_params *p)
1747{
1748	priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) |
1749			    (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) |
1750			    VIP_CNTRL_0_SWAP_B(p->swap_b) |
1751			    (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0);
1752	priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) |
1753			    (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) |
1754			    VIP_CNTRL_1_SWAP_D(p->swap_d) |
1755			    (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0);
1756	priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) |
1757			    (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) |
1758			    VIP_CNTRL_2_SWAP_F(p->swap_f) |
1759			    (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
1760
1761	if (p->audio_params.format != AFMT_UNUSED) {
1762		unsigned int ratio, route;
1763		bool spdif = p->audio_params.format == AFMT_SPDIF;
1764
1765		route = AUDIO_ROUTE_I2S + spdif;
1766
1767		priv->audio.route = &tda998x_audio_route[route];
1768		priv->audio.cea = p->audio_params.cea;
1769		priv->audio.sample_rate = p->audio_params.sample_rate;
1770		memcpy(priv->audio.status, p->audio_params.status,
1771		       min(sizeof(priv->audio.status),
1772			   sizeof(p->audio_params.status)));
1773		priv->audio.ena_ap = p->audio_params.config;
1774		priv->audio.i2s_format = I2S_FORMAT_PHILIPS;
1775
1776		ratio = spdif ? 64 : p->audio_params.sample_width * 2;
1777		return tda998x_derive_cts_n(priv, &priv->audio, ratio);
1778	}
1779
1780	return 0;
1781}
1782
1783static void tda998x_destroy(struct device *dev)
1784{
1785	struct tda998x_priv *priv = dev_get_drvdata(dev);
1786
1787	drm_bridge_remove(&priv->bridge);
1788
1789	/* disable all IRQs and free the IRQ handler */
1790	cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1791	reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1792
1793	if (priv->audio_pdev)
1794		platform_device_unregister(priv->audio_pdev);
1795
1796	if (priv->hdmi->irq)
1797		free_irq(priv->hdmi->irq, priv);
1798
1799	del_timer_sync(&priv->edid_delay_timer);
1800	cancel_work_sync(&priv->detect_work);
1801
1802	i2c_unregister_device(priv->cec);
1803
1804	cec_notifier_conn_unregister(priv->cec_notify);
 
1805}
1806
1807static int tda998x_create(struct device *dev)
1808{
1809	struct i2c_client *client = to_i2c_client(dev);
1810	struct device_node *np = client->dev.of_node;
1811	struct i2c_board_info cec_info;
1812	struct tda998x_priv *priv;
1813	u32 video;
1814	int rev_lo, rev_hi, ret;
1815
1816	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1817	if (!priv)
1818		return -ENOMEM;
1819
1820	dev_set_drvdata(dev, priv);
1821
1822	mutex_init(&priv->mutex);	/* protect the page access */
1823	mutex_init(&priv->audio_mutex); /* protect access from audio thread */
1824	mutex_init(&priv->edid_mutex);
1825	INIT_LIST_HEAD(&priv->bridge.list);
1826	init_waitqueue_head(&priv->edid_delay_waitq);
1827	timer_setup(&priv->edid_delay_timer, tda998x_edid_delay_done, 0);
1828	INIT_WORK(&priv->detect_work, tda998x_detect_work);
1829
1830	priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
1831	priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
1832	priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
1833
1834	/* CEC I2C address bound to TDA998x I2C addr by configuration pins */
1835	priv->cec_addr = 0x34 + (client->addr & 0x03);
1836	priv->current_page = 0xff;
1837	priv->hdmi = client;
1838
1839	/* wake up the device: */
1840	cec_write(priv, REG_CEC_ENAMODS,
1841			CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
1842
1843	tda998x_reset(priv);
1844
1845	/* read version: */
1846	rev_lo = reg_read(priv, REG_VERSION_LSB);
1847	if (rev_lo < 0) {
1848		dev_err(dev, "failed to read version: %d\n", rev_lo);
1849		return rev_lo;
1850	}
1851
1852	rev_hi = reg_read(priv, REG_VERSION_MSB);
1853	if (rev_hi < 0) {
1854		dev_err(dev, "failed to read version: %d\n", rev_hi);
1855		return rev_hi;
1856	}
1857
1858	priv->rev = rev_lo | rev_hi << 8;
1859
1860	/* mask off feature bits: */
1861	priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */
1862
1863	switch (priv->rev) {
1864	case TDA9989N2:
1865		dev_info(dev, "found TDA9989 n2");
1866		break;
1867	case TDA19989:
1868		dev_info(dev, "found TDA19989");
1869		break;
1870	case TDA19989N2:
1871		dev_info(dev, "found TDA19989 n2");
1872		break;
1873	case TDA19988:
1874		dev_info(dev, "found TDA19988");
1875		break;
1876	default:
1877		dev_err(dev, "found unsupported device: %04x\n", priv->rev);
1878		return -ENXIO;
1879	}
1880
1881	/* after reset, enable DDC: */
1882	reg_write(priv, REG_DDC_DISABLE, 0x00);
1883
1884	/* set clock on DDC channel: */
1885	reg_write(priv, REG_TX3, 39);
1886
1887	/* if necessary, disable multi-master: */
1888	if (priv->rev == TDA19989)
1889		reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
1890
1891	cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
1892			CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
1893
1894	/* ensure interrupts are disabled */
1895	cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1896
1897	/* clear pending interrupts */
1898	cec_read(priv, REG_CEC_RXSHPDINT);
1899	reg_read(priv, REG_INT_FLAGS_0);
1900	reg_read(priv, REG_INT_FLAGS_1);
1901	reg_read(priv, REG_INT_FLAGS_2);
1902
1903	/* initialize the optional IRQ */
1904	if (client->irq) {
1905		unsigned long irq_flags;
1906
1907		/* init read EDID waitqueue and HDP work */
1908		init_waitqueue_head(&priv->wq_edid);
1909
1910		irq_flags =
1911			irqd_get_trigger_type(irq_get_irq_data(client->irq));
1912
1913		priv->cec_glue.irq_flags = irq_flags;
1914
1915		irq_flags |= IRQF_SHARED | IRQF_ONESHOT;
1916		ret = request_threaded_irq(client->irq, NULL,
1917					   tda998x_irq_thread, irq_flags,
1918					   "tda998x", priv);
1919		if (ret) {
1920			dev_err(dev, "failed to request IRQ#%u: %d\n",
1921				client->irq, ret);
1922			goto err_irq;
1923		}
1924
1925		/* enable HPD irq */
1926		cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
1927	}
1928
1929	priv->cec_notify = cec_notifier_conn_register(dev, NULL, NULL);
1930	if (!priv->cec_notify) {
1931		ret = -ENOMEM;
1932		goto fail;
1933	}
1934
1935	priv->cec_glue.parent = dev;
1936	priv->cec_glue.data = priv;
1937	priv->cec_glue.init = tda998x_cec_hook_init;
1938	priv->cec_glue.exit = tda998x_cec_hook_exit;
1939	priv->cec_glue.open = tda998x_cec_hook_open;
1940	priv->cec_glue.release = tda998x_cec_hook_release;
1941
1942	/*
1943	 * Some TDA998x are actually two I2C devices merged onto one piece
1944	 * of silicon: TDA9989 and TDA19989 combine the HDMI transmitter
1945	 * with a slightly modified TDA9950 CEC device.  The CEC device
1946	 * is at the TDA9950 address, with the address pins strapped across
1947	 * to the TDA998x address pins.  Hence, it always has the same
1948	 * offset.
1949	 */
1950	memset(&cec_info, 0, sizeof(cec_info));
1951	strlcpy(cec_info.type, "tda9950", sizeof(cec_info.type));
1952	cec_info.addr = priv->cec_addr;
1953	cec_info.platform_data = &priv->cec_glue;
1954	cec_info.irq = client->irq;
1955
1956	priv->cec = i2c_new_client_device(client->adapter, &cec_info);
1957	if (IS_ERR(priv->cec)) {
1958		ret = PTR_ERR(priv->cec);
1959		goto fail;
1960	}
1961
1962	/* enable EDID read irq: */
1963	reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1964
1965	if (np) {
1966		/* get the device tree parameters */
1967		ret = of_property_read_u32(np, "video-ports", &video);
1968		if (ret == 0) {
1969			priv->vip_cntrl_0 = video >> 16;
1970			priv->vip_cntrl_1 = video >> 8;
1971			priv->vip_cntrl_2 = video;
1972		}
1973
1974		ret = tda998x_get_audio_ports(priv, np);
1975		if (ret)
1976			goto fail;
1977
1978		if (priv->audio_port_enable[AUDIO_ROUTE_I2S] ||
1979		    priv->audio_port_enable[AUDIO_ROUTE_SPDIF])
1980			tda998x_audio_codec_init(priv, &client->dev);
1981	} else if (dev->platform_data) {
1982		ret = tda998x_set_config(priv, dev->platform_data);
1983		if (ret)
1984			goto fail;
1985	}
1986
1987	priv->bridge.funcs = &tda998x_bridge_funcs;
1988#ifdef CONFIG_OF
1989	priv->bridge.of_node = dev->of_node;
1990#endif
1991
1992	drm_bridge_add(&priv->bridge);
1993
1994	return 0;
1995
1996fail:
1997	tda998x_destroy(dev);
1998err_irq:
1999	return ret;
2000}
2001
2002/* DRM encoder functions */
2003
 
 
 
 
 
 
 
 
 
2004static int tda998x_encoder_init(struct device *dev, struct drm_device *drm)
2005{
2006	struct tda998x_priv *priv = dev_get_drvdata(dev);
2007	u32 crtcs = 0;
2008	int ret;
2009
2010	if (dev->of_node)
2011		crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
2012
2013	/* If no CRTCs were found, fall back to our old behaviour */
2014	if (crtcs == 0) {
2015		dev_warn(dev, "Falling back to first CRTC\n");
2016		crtcs = 1 << 0;
2017	}
2018
2019	priv->encoder.possible_crtcs = crtcs;
2020
2021	ret = drm_simple_encoder_init(drm, &priv->encoder,
2022				      DRM_MODE_ENCODER_TMDS);
2023	if (ret)
2024		goto err_encoder;
2025
2026	ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL, 0);
2027	if (ret)
2028		goto err_bridge;
2029
2030	return 0;
2031
2032err_bridge:
2033	drm_encoder_cleanup(&priv->encoder);
2034err_encoder:
2035	return ret;
2036}
2037
2038static int tda998x_bind(struct device *dev, struct device *master, void *data)
2039{
2040	struct drm_device *drm = data;
2041
2042	return tda998x_encoder_init(dev, drm);
2043}
2044
2045static void tda998x_unbind(struct device *dev, struct device *master,
2046			   void *data)
2047{
2048	struct tda998x_priv *priv = dev_get_drvdata(dev);
2049
2050	drm_encoder_cleanup(&priv->encoder);
2051}
2052
2053static const struct component_ops tda998x_ops = {
2054	.bind = tda998x_bind,
2055	.unbind = tda998x_unbind,
2056};
2057
2058static int
2059tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
2060{
2061	int ret;
2062
2063	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
2064		dev_warn(&client->dev, "adapter does not support I2C\n");
2065		return -EIO;
2066	}
2067
2068	ret = tda998x_create(&client->dev);
2069	if (ret)
2070		return ret;
2071
2072	ret = component_add(&client->dev, &tda998x_ops);
2073	if (ret)
2074		tda998x_destroy(&client->dev);
2075	return ret;
2076}
2077
2078static int tda998x_remove(struct i2c_client *client)
2079{
2080	component_del(&client->dev, &tda998x_ops);
2081	tda998x_destroy(&client->dev);
2082	return 0;
2083}
2084
2085#ifdef CONFIG_OF
2086static const struct of_device_id tda998x_dt_ids[] = {
2087	{ .compatible = "nxp,tda998x", },
2088	{ }
2089};
2090MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
2091#endif
2092
2093static const struct i2c_device_id tda998x_ids[] = {
2094	{ "tda998x", 0 },
2095	{ }
2096};
2097MODULE_DEVICE_TABLE(i2c, tda998x_ids);
2098
2099static struct i2c_driver tda998x_driver = {
2100	.probe = tda998x_probe,
2101	.remove = tda998x_remove,
2102	.driver = {
2103		.name = "tda998x",
2104		.of_match_table = of_match_ptr(tda998x_dt_ids),
2105	},
2106	.id_table = tda998x_ids,
2107};
2108
2109module_i2c_driver(tda998x_driver);
2110
2111MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
2112MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder");
2113MODULE_LICENSE("GPL");