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u-boot/drivers/video/tda19988.c

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video: Add support for NXP's TDA19988 HDMI encoder Add support for the NXP TDA19988 HDMI encoder as used on the Juno development board from Arm. Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
2018-09-28 12:49:31 +00:00
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2018 Liviu Dudau <liviu@dudau.co.uk>
*
* Based on the Linux driver, (C) 2012 Texas Instruments
*/
#include <common.h>
#include <dm.h>
#include <display.h>
#include <i2c.h>
/*
* TDA19988 uses paged registers. We encode the page# in the upper
* bits of the register#. It also means that reads/writes to a register
* have to ensure that the register's page is selected as the current
* page.
*/
#define REG(page, addr) (((page) << 8) | (addr))
#define REG2ADDR(reg) ((reg) & 0xff)
#define REG2PAGE(reg) (((reg) >> 8) & 0xff)
/* register for setting current page */
#define REG_CURRENT_PAGE 0xff
/* Page 00h: General Control */
#define REG_VERSION_LSB REG(0x00, 0x00) /* read */
#define REG_MAIN_CNTRL0 REG(0x00, 0x01) /* read/write */
#define MAIN_CNTRL0_SR BIT(0)
#define MAIN_CNTRL0_DECS BIT(1)
#define MAIN_CNTRL0_DEHS BIT(2)
#define MAIN_CNTRL0_CECS BIT(3)
#define MAIN_CNTRL0_CEHS BIT(4)
#define MAIN_CNTRL0_SCALER BIT(7)
#define REG_VERSION_MSB REG(0x00, 0x02) /* read */
#define REG_SOFTRESET REG(0x00, 0x0a) /* write */
#define SOFTRESET_AUDIO BIT(0)
#define SOFTRESET_I2C_MASTER BIT(1)
#define REG_DDC_DISABLE REG(0x00, 0x0b) /* read/write */
#define REG_I2C_MASTER REG(0x00, 0x0d) /* read/write */
#define I2C_MASTER_DIS_MM BIT(0)
#define I2C_MASTER_DIS_FILT BIT(1)
#define I2C_MASTER_APP_STRT_LAT BIT(2)
#define REG_FEAT_POWERDOWN REG(0x00, 0x0e) /* read/write */
#define FEAT_POWERDOWN_PREFILT BIT(0)
#define FEAT_POWERDOWN_CSC BIT(1)
#define FEAT_POWERDOWN_SPDIF BIT(3)
#define REG_INT_FLAGS_0 REG(0x00, 0x0f) /* read/write */
#define REG_INT_FLAGS_1 REG(0x00, 0x10) /* read/write */
#define REG_INT_FLAGS_2 REG(0x00, 0x11) /* read/write */
#define INT_FLAGS_2_EDID_BLK_RD BIT(1)
#define REG_ENA_VP_0 REG(0x00, 0x18) /* read/write */
#define REG_ENA_VP_1 REG(0x00, 0x19) /* read/write */
#define REG_ENA_VP_2 REG(0x00, 0x1a) /* read/write */
#define REG_ENA_AP REG(0x00, 0x1e) /* read/write */
#define REG_VIP_CNTRL_0 REG(0x00, 0x20) /* write */
#define VIP_CNTRL_0_MIRR_A BIT(7)
#define VIP_CNTRL_0_SWAP_A(x) (((x) & 7) << 4)
#define VIP_CNTRL_0_MIRR_B BIT(3)
#define VIP_CNTRL_0_SWAP_B(x) (((x) & 7) << 0)
#define REG_VIP_CNTRL_1 REG(0x00, 0x21) /* write */
#define VIP_CNTRL_1_MIRR_C BIT(7)
#define VIP_CNTRL_1_SWAP_C(x) (((x) & 7) << 4)
#define VIP_CNTRL_1_MIRR_D BIT(3)
#define VIP_CNTRL_1_SWAP_D(x) (((x) & 7) << 0)
#define REG_VIP_CNTRL_2 REG(0x00, 0x22) /* write */
#define VIP_CNTRL_2_MIRR_E BIT(7)
#define VIP_CNTRL_2_SWAP_E(x) (((x) & 7) << 4)
#define VIP_CNTRL_2_MIRR_F BIT(3)
#define VIP_CNTRL_2_SWAP_F(x) (((x) & 7) << 0)
#define REG_VIP_CNTRL_3 REG(0x00, 0x23) /* write */
#define VIP_CNTRL_3_X_TGL BIT(0)
#define VIP_CNTRL_3_H_TGL BIT(1)
#define VIP_CNTRL_3_V_TGL BIT(2)
#define VIP_CNTRL_3_EMB BIT(3)
#define VIP_CNTRL_3_SYNC_DE BIT(4)
#define VIP_CNTRL_3_SYNC_HS BIT(5)
#define VIP_CNTRL_3_DE_INT BIT(6)
#define VIP_CNTRL_3_EDGE BIT(7)
#define REG_VIP_CNTRL_4 REG(0x00, 0x24) /* write */
#define VIP_CNTRL_4_BLC(x) (((x) & 3) << 0)
#define VIP_CNTRL_4_BLANKIT(x) (((x) & 3) << 2)
#define VIP_CNTRL_4_CCIR656 BIT(4)
#define VIP_CNTRL_4_656_ALT BIT(5)
#define VIP_CNTRL_4_TST_656 BIT(6)
#define VIP_CNTRL_4_TST_PAT BIT(7)
#define REG_VIP_CNTRL_5 REG(0x00, 0x25) /* write */
#define VIP_CNTRL_5_CKCASE BIT(0)
#define VIP_CNTRL_5_SP_CNT(x) (((x) & 3) << 1)
#define REG_MUX_VP_VIP_OUT REG(0x00, 0x27) /* read/write */
#define REG_MAT_CONTRL REG(0x00, 0x80) /* write */
#define MAT_CONTRL_MAT_SC(x) (((x) & 3) << 0)
#define MAT_CONTRL_MAT_BP BIT(2)
#define REG_VIDFORMAT REG(0x00, 0xa0) /* write */
#define REG_REFPIX_MSB REG(0x00, 0xa1) /* write */
#define REG_REFPIX_LSB REG(0x00, 0xa2) /* write */
#define REG_REFLINE_MSB REG(0x00, 0xa3) /* write */
#define REG_REFLINE_LSB REG(0x00, 0xa4) /* write */
#define REG_NPIX_MSB REG(0x00, 0xa5) /* write */
#define REG_NPIX_LSB REG(0x00, 0xa6) /* write */
#define REG_NLINE_MSB REG(0x00, 0xa7) /* write */
#define REG_NLINE_LSB REG(0x00, 0xa8) /* write */
#define REG_VS_LINE_STRT_1_MSB REG(0x00, 0xa9) /* write */
#define REG_VS_LINE_STRT_1_LSB REG(0x00, 0xaa) /* write */
#define REG_VS_PIX_STRT_1_MSB REG(0x00, 0xab) /* write */
#define REG_VS_PIX_STRT_1_LSB REG(0x00, 0xac) /* write */
#define REG_VS_LINE_END_1_MSB REG(0x00, 0xad) /* write */
#define REG_VS_LINE_END_1_LSB REG(0x00, 0xae) /* write */
#define REG_VS_PIX_END_1_MSB REG(0x00, 0xaf) /* write */
#define REG_VS_PIX_END_1_LSB REG(0x00, 0xb0) /* write */
#define REG_VS_LINE_STRT_2_MSB REG(0x00, 0xb1) /* write */
#define REG_VS_LINE_STRT_2_LSB REG(0x00, 0xb2) /* write */
#define REG_VS_PIX_STRT_2_MSB REG(0x00, 0xb3) /* write */
#define REG_VS_PIX_STRT_2_LSB REG(0x00, 0xb4) /* write */
#define REG_VS_LINE_END_2_MSB REG(0x00, 0xb5) /* write */
#define REG_VS_LINE_END_2_LSB REG(0x00, 0xb6) /* write */
#define REG_VS_PIX_END_2_MSB REG(0x00, 0xb7) /* write */
#define REG_VS_PIX_END_2_LSB REG(0x00, 0xb8) /* write */
#define REG_HS_PIX_START_MSB REG(0x00, 0xb9) /* write */
#define REG_HS_PIX_START_LSB REG(0x00, 0xba) /* write */
#define REG_HS_PIX_STOP_MSB REG(0x00, 0xbb) /* write */
#define REG_HS_PIX_STOP_LSB REG(0x00, 0xbc) /* write */
#define REG_VWIN_START_1_MSB REG(0x00, 0xbd) /* write */
#define REG_VWIN_START_1_LSB REG(0x00, 0xbe) /* write */
#define REG_VWIN_END_1_MSB REG(0x00, 0xbf) /* write */
#define REG_VWIN_END_1_LSB REG(0x00, 0xc0) /* write */
#define REG_VWIN_START_2_MSB REG(0x00, 0xc1) /* write */
#define REG_VWIN_START_2_LSB REG(0x00, 0xc2) /* write */
#define REG_VWIN_END_2_MSB REG(0x00, 0xc3) /* write */
#define REG_VWIN_END_2_LSB REG(0x00, 0xc4) /* write */
#define REG_DE_START_MSB REG(0x00, 0xc5) /* write */
#define REG_DE_START_LSB REG(0x00, 0xc6) /* write */
#define REG_DE_STOP_MSB REG(0x00, 0xc7) /* write */
#define REG_DE_STOP_LSB REG(0x00, 0xc8) /* write */
#define REG_TBG_CNTRL_0 REG(0x00, 0xca) /* write */
#define TBG_CNTRL_0_TOP_TGL BIT(0)
#define TBG_CNTRL_0_TOP_SEL BIT(1)
#define TBG_CNTRL_0_DE_EXT BIT(2)
#define TBG_CNTRL_0_TOP_EXT BIT(3)
#define TBG_CNTRL_0_FRAME_DIS BIT(5)
#define TBG_CNTRL_0_SYNC_MTHD BIT(6)
#define TBG_CNTRL_0_SYNC_ONCE BIT(7)
#define REG_TBG_CNTRL_1 REG(0x00, 0xcb) /* write */
#define TBG_CNTRL_1_H_TGL BIT(0)
#define TBG_CNTRL_1_V_TGL BIT(1)
#define TBG_CNTRL_1_TGL_EN BIT(2)
#define TBG_CNTRL_1_X_EXT BIT(3)
#define TBG_CNTRL_1_H_EXT BIT(4)
#define TBG_CNTRL_1_V_EXT BIT(5)
#define TBG_CNTRL_1_DWIN_DIS BIT(6)
#define REG_ENABLE_SPACE REG(0x00, 0xd6) /* write */
#define REG_HVF_CNTRL_0 REG(0x00, 0xe4) /* write */
#define HVF_CNTRL_0_SM BIT(7)
#define HVF_CNTRL_0_RWB BIT(6)
#define HVF_CNTRL_0_PREFIL(x) (((x) & 3) << 2)
#define HVF_CNTRL_0_INTPOL(x) (((x) & 3) << 0)
#define REG_HVF_CNTRL_1 REG(0x00, 0xe5) /* write */
#define HVF_CNTRL_1_FOR BIT(0)
#define HVF_CNTRL_1_YUVBLK BIT(1)
#define HVF_CNTRL_1_VQR(x) (((x) & 3) << 2)
#define HVF_CNTRL_1_PAD(x) (((x) & 3) << 4)
#define REG_RPT_CNTRL REG(0x00, 0xf0) /* write */
#define REG_AIP_CLKSEL REG(0x00, 0xfd) /* write */
#define AIP_CLKSEL_AIP_SPDIF (0 << 3)
#define AIP_CLKSEL_AIP_I2S BIT(3)
#define AIP_CLKSEL_FS_ACLK (0 << 0)
#define AIP_CLKSEL_FS_MCLK BIT(0)
/* Page 02h: PLL settings */
#define REG_PLL_SERIAL_1 REG(0x02, 0x00) /* read/write */
#define PLL_SERIAL_1_SRL_FDN BIT(0)
#define PLL_SERIAL_1_SRL_IZ(x) (((x) & 3) << 1)
#define PLL_SERIAL_1_SRL_MAN_IZ BIT(6)
#define REG_PLL_SERIAL_2 REG(0x02, 0x01) /* read/write */
#define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0)
#define PLL_SERIAL_2_SRL_PR(x) (((x) & 0xf) << 4)
#define REG_PLL_SERIAL_3 REG(0x02, 0x02) /* read/write */
#define PLL_SERIAL_3_SRL_CCIR BIT(0)
#define PLL_SERIAL_3_SRL_DE BIT(2)
#define PLL_SERIAL_3_SRL_PXIN_SEL BIT(4)
#define REG_SERIALIZER REG(0x02, 0x03) /* read/write */
#define REG_BUFFER_OUT REG(0x02, 0x04) /* read/write */
#define REG_PLL_SCG1 REG(0x02, 0x05) /* read/write */
#define REG_PLL_SCG2 REG(0x02, 0x06) /* read/write */
#define REG_PLL_SCGN1 REG(0x02, 0x07) /* read/write */
#define REG_PLL_SCGN2 REG(0x02, 0x08) /* read/write */
#define REG_PLL_SCGR1 REG(0x02, 0x09) /* read/write */
#define REG_PLL_SCGR2 REG(0x02, 0x0a) /* read/write */
#define REG_AUDIO_DIV REG(0x02, 0x0e) /* read/write */
#define AUDIO_DIV_SERCLK_1 0
#define AUDIO_DIV_SERCLK_2 1
#define AUDIO_DIV_SERCLK_4 2
#define AUDIO_DIV_SERCLK_8 3
#define AUDIO_DIV_SERCLK_16 4
#define AUDIO_DIV_SERCLK_32 5
#define REG_SEL_CLK REG(0x02, 0x11) /* read/write */
#define SEL_CLK_SEL_CLK1 BIT(0)
#define SEL_CLK_SEL_VRF_CLK(x) (((x) & 3) << 1)
#define SEL_CLK_ENA_SC_CLK BIT(3)
#define REG_ANA_GENERAL REG(0x02, 0x12) /* read/write */
/* Page 09h: EDID Control */
#define REG_EDID_DATA_0 REG(0x09, 0x00) /* read */
/* next 127 successive registers are the EDID block */
#define REG_EDID_CTRL REG(0x09, 0xfa) /* read/write */
#define REG_DDC_ADDR REG(0x09, 0xfb) /* read/write */
#define REG_DDC_OFFS REG(0x09, 0xfc) /* read/write */
#define REG_DDC_SEGM_ADDR REG(0x09, 0xfd) /* read/write */
#define REG_DDC_SEGM REG(0x09, 0xfe) /* read/write */
/* Page 11h: audio settings and content info packets */
#define REG_AIP_CNTRL_0 REG(0x11, 0x00) /* read/write */
#define AIP_CNTRL_0_RST_FIFO BIT(0)
#define REG_ENC_CNTRL REG(0x11, 0x0d) /* read/write */
#define ENC_CNTRL_RST_ENC BIT(0)
#define ENC_CNTRL_RST_SEL BIT(1)
#define ENC_CNTRL_CTL_CODE(x) (((x) & 3) << 2)
/* Page 12h: HDCP and OTP */
#define REG_TX3 REG(0x12, 0x9a) /* read/write */
#define REG_TX4 REG(0x12, 0x9b) /* read/write */
#define TX4_PD_RAM BIT(1)
#define REG_TX33 REG(0x12, 0xb8) /* read/write */
#define TX33_HDMI BIT(1)
/* CEC registers, not paged */
#define REG_CEC_FRO_IM_CLK_CTRL 0xfb /* read/write */
#define CEC_FRO_IM_CLK_CTRL_GHOST_DIS BIT(7)
#define CEC_FRO_IM_CLK_CTRL_ENA_OTP BIT(6)
#define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL BIT(1)
#define CEC_FRO_IM_CLK_CTRL_FRO_DIV BIT(0)
#define REG_CEC_RXSHPDINTENA 0xfc /* read/write */
#define REG_CEC_RXSHPDINT 0xfd /* read */
#define CEC_RXSHPDINT_RXSENS BIT(0)
#define CEC_RXSHPDINT_HPD BIT(1)
#define TDA19988_CEC_ENAMODS 0xff /* read/write */
#define CEC_ENAMODS_EN_RXSENS BIT(2)
#define CEC_ENAMODS_EN_HDMI BIT(1)
#define CEC_ENAMODS_EN_CEC BIT(0)
/* Device versions */
#define TDA9989N2 0x0101
#define TDA19989 0x0201
#define TDA19989N2 0x0202
#define TDA19988 0x0301
struct tda19988_priv {
struct udevice *chip;
struct udevice *cec_chip;
u16 revision;
u8 current_page;
};
static void tda19988_register_set(struct tda19988_priv *priv, u16 reg, u8 val)
{
u8 old_val, page = REG2PAGE(reg);
if (priv->current_page != page) {
dm_i2c_reg_write(priv->chip, REG_CURRENT_PAGE, page);
priv->current_page = page;
}
old_val = dm_i2c_reg_read(priv->chip, REG2ADDR(reg));
old_val |= val;
dm_i2c_reg_write(priv->chip, REG2ADDR(reg), old_val);
}
static void tda19988_register_clear(struct tda19988_priv *priv, u16 reg, u8 val)
{
u8 old_val, page = REG2PAGE(reg);
if (priv->current_page != page) {
dm_i2c_reg_write(priv->chip, REG_CURRENT_PAGE, page);
priv->current_page = page;
}
old_val = dm_i2c_reg_read(priv->chip, REG2ADDR(reg));
old_val &= ~val;
dm_i2c_reg_write(priv->chip, REG2ADDR(reg), old_val);
}
static void tda19988_register_write(struct tda19988_priv *priv, u16 reg, u8 val)
{
u8 page = REG2PAGE(reg);
if (priv->current_page != page) {
dm_i2c_reg_write(priv->chip, REG_CURRENT_PAGE, page);
priv->current_page = page;
}
dm_i2c_reg_write(priv->chip, REG2ADDR(reg), val);
}
static int tda19988_register_read(struct tda19988_priv *priv, u16 reg)
{
u8 page = REG2PAGE(reg);
if (priv->current_page != page) {
dm_i2c_reg_write(priv->chip, REG_CURRENT_PAGE, page);
priv->current_page = page;
}
return dm_i2c_reg_read(priv->chip, REG2ADDR(reg));
}
static void tda19988_register_write16(struct tda19988_priv *priv,
u16 reg, u16 val)
{
u8 buf[] = { val >> 8, val }, page = REG2PAGE(reg);
if (priv->current_page != page) {
dm_i2c_reg_write(priv->chip, REG_CURRENT_PAGE, page);
priv->current_page = page;
}
dm_i2c_write(priv->chip, REG2ADDR(reg), buf, 2);
}
static int tda19988_read_edid(struct udevice *dev, u8 *buf, int buf_size)
{
struct tda19988_priv *priv = dev_get_priv(dev);
int i, val = 0, offset = 0;
/*
* The TDA998x has a problem when trying to read the EDID close to a
* HPD assertion: it needs a delay of 100ms to avoid timing out while
* trying to read EDID data.
*/
mdelay(120);
if (priv->revision == TDA19988)
tda19988_register_clear(priv, REG_TX4, TX4_PD_RAM);
while (offset < buf_size) {
tda19988_register_write(priv, REG_DDC_ADDR, 0xa0);
tda19988_register_write(priv, REG_DDC_OFFS, offset);
tda19988_register_write(priv, REG_DDC_SEGM_ADDR, 0x60);
tda19988_register_write(priv, REG_DDC_SEGM, 0);
/* enable reading EDID */
tda19988_register_write(priv, REG_EDID_CTRL, 1);
/* flags must be cleared by software */
tda19988_register_write(priv, REG_EDID_CTRL, 0);
/* wait for block read to complete */
for (i = 300; i > 0; i--) {
mdelay(1);
val = tda19988_register_read(priv, REG_INT_FLAGS_2);
if (val < 0)
return val;
if (val & INT_FLAGS_2_EDID_BLK_RD)
break;
}
if (i == 0)
return -ETIMEDOUT;
priv->current_page = REG2PAGE(REG_EDID_DATA_0);
dm_i2c_reg_write(priv->chip,
REG_CURRENT_PAGE, REG2PAGE(REG_EDID_DATA_0));
val = dm_i2c_read(priv->chip,
REG2ADDR(REG_EDID_DATA_0), buf + offset, 128);
offset += 128;
}
if (priv->revision == TDA19988)
tda19988_register_set(priv, REG_TX4, TX4_PD_RAM);
return offset;
}
static int tda19988_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *timing)
{
struct tda19988_priv *priv = dev_get_priv(dev);
u8 div = 148500000 / timing->pixelclock.typ, reg;
u16 line_clocks, lines;
if (dev != 0) {
div--;
if (div > 3)
div = 3;
}
/* first disable the video ports */
tda19988_register_write(priv, REG_ENA_VP_0, 0);
tda19988_register_write(priv, REG_ENA_VP_1, 0);
tda19988_register_write(priv, REG_ENA_VP_2, 0);
/* shutdown audio */
tda19988_register_write(priv, REG_ENA_AP, 0);
line_clocks = timing->hsync_len.typ + timing->hback_porch.typ +
timing->hactive.typ + timing->hfront_porch.typ;
lines = timing->vsync_len.typ + timing->vback_porch.typ +
timing->vactive.typ + timing->vfront_porch.typ;
/* mute the audio FIFO */
tda19988_register_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
/* HDMI HDCP: off */
tda19988_register_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS);
tda19988_register_clear(priv, REG_TX33, TX33_HDMI);
tda19988_register_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0));
/* no pre-filter or interpolator */
tda19988_register_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) |
HVF_CNTRL_0_INTPOL(0));
tda19988_register_set(priv, REG_FEAT_POWERDOWN,
FEAT_POWERDOWN_PREFILT);
tda19988_register_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0));
tda19988_register_write(priv, REG_VIP_CNTRL_4,
VIP_CNTRL_4_BLANKIT(0) | VIP_CNTRL_4_BLC(0) |
VIP_CNTRL_4_TST_PAT);
tda19988_register_clear(priv, REG_PLL_SERIAL_1,
PLL_SERIAL_1_SRL_MAN_IZ);
tda19988_register_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR |
PLL_SERIAL_3_SRL_DE);
tda19988_register_write(priv, REG_SERIALIZER, 0);
tda19988_register_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0));
tda19988_register_write(priv, REG_RPT_CNTRL, 0);
tda19988_register_write(priv, REG_SEL_CLK, SEL_CLK_SEL_VRF_CLK(0) |
SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
tda19988_register_write(priv, REG_PLL_SERIAL_2,
PLL_SERIAL_2_SRL_NOSC(div) |
PLL_SERIAL_2_SRL_PR(0));
/* set color matrix bypass flag: */
tda19988_register_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP |
MAT_CONTRL_MAT_SC(1));
tda19988_register_set(priv, REG_FEAT_POWERDOWN, FEAT_POWERDOWN_CSC);
/* set BIAS tmds value: */
tda19988_register_write(priv, REG_ANA_GENERAL, 0x09);
/*
* Sync on rising HSYNC/VSYNC
*/
reg = VIP_CNTRL_3_SYNC_HS;
/*
* TDA19988 requires high-active sync at input stage,
* so invert low-active sync provided by master encoder here
*/
if (timing->flags & DISPLAY_FLAGS_HSYNC_LOW)
reg |= VIP_CNTRL_3_H_TGL;
if (timing->flags & DISPLAY_FLAGS_VSYNC_LOW)
reg |= VIP_CNTRL_3_V_TGL;
tda19988_register_write(priv, REG_VIP_CNTRL_3, reg);
tda19988_register_write(priv, REG_VIDFORMAT, 0x00);
tda19988_register_write16(priv, REG_REFPIX_MSB,
timing->hfront_porch.typ + 3);
tda19988_register_write16(priv, REG_REFLINE_MSB,
timing->vfront_porch.typ + 1);
tda19988_register_write16(priv, REG_NPIX_MSB, line_clocks);
tda19988_register_write16(priv, REG_NLINE_MSB, lines);
tda19988_register_write16(priv, REG_VS_LINE_STRT_1_MSB,
timing->vfront_porch.typ);
tda19988_register_write16(priv, REG_VS_PIX_STRT_1_MSB,
timing->hfront_porch.typ);
tda19988_register_write16(priv, REG_VS_LINE_END_1_MSB,
timing->vfront_porch.typ +
timing->vsync_len.typ);
tda19988_register_write16(priv, REG_VS_PIX_END_1_MSB,
timing->hfront_porch.typ);
tda19988_register_write16(priv, REG_VS_LINE_STRT_2_MSB, 0);
tda19988_register_write16(priv, REG_VS_PIX_STRT_2_MSB, 0);
tda19988_register_write16(priv, REG_VS_LINE_END_2_MSB, 0);
tda19988_register_write16(priv, REG_VS_PIX_END_2_MSB, 0);
tda19988_register_write16(priv, REG_HS_PIX_START_MSB,
timing->hfront_porch.typ);
tda19988_register_write16(priv, REG_HS_PIX_STOP_MSB,
timing->hfront_porch.typ +
timing->hsync_len.typ);
tda19988_register_write16(priv, REG_VWIN_START_1_MSB,
lines - timing->vactive.typ - 1);
tda19988_register_write16(priv, REG_VWIN_END_1_MSB, lines - 1);
tda19988_register_write16(priv, REG_VWIN_START_2_MSB, 0);
tda19988_register_write16(priv, REG_VWIN_END_2_MSB, 0);
tda19988_register_write16(priv, REG_DE_START_MSB,
line_clocks - timing->hactive.typ);
tda19988_register_write16(priv, REG_DE_STOP_MSB, line_clocks);
if (priv->revision == TDA19988) {
/* let incoming pixels fill the active space (if any) */
tda19988_register_write(priv, REG_ENABLE_SPACE, 0x00);
}
/*
* Always generate sync polarity relative to input sync and
* revert input stage toggled sync at output stage
*/
reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN;
if (timing->flags & DISPLAY_FLAGS_HSYNC_LOW)
reg |= TBG_CNTRL_1_H_TGL;
if (timing->flags & DISPLAY_FLAGS_VSYNC_LOW)
reg |= TBG_CNTRL_1_V_TGL;
tda19988_register_write(priv, REG_TBG_CNTRL_1, reg);
/* must be last register set: */
tda19988_register_write(priv, REG_TBG_CNTRL_0, 0);
/* turn on HDMI HDCP */
reg &= ~TBG_CNTRL_1_DWIN_DIS;
tda19988_register_write(priv, REG_TBG_CNTRL_1, reg);
tda19988_register_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1));
tda19988_register_set(priv, REG_TX33, TX33_HDMI);
mdelay(400);
/* enable video ports */
tda19988_register_write(priv, REG_ENA_VP_0, 0xff);
tda19988_register_write(priv, REG_ENA_VP_1, 0xff);
tda19988_register_write(priv, REG_ENA_VP_2, 0xff);
/* set muxing after enabling ports: */
tda19988_register_write(priv, REG_VIP_CNTRL_0,
VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3));
tda19988_register_write(priv, REG_VIP_CNTRL_1,
VIP_CNTRL_1_SWAP_C(4) | VIP_CNTRL_1_SWAP_D(5));
tda19988_register_write(priv, REG_VIP_CNTRL_2,
VIP_CNTRL_2_SWAP_E(0) | VIP_CNTRL_2_SWAP_F(1));
return 0;
}
struct dm_display_ops tda19988_ops = {
.read_edid = tda19988_read_edid,
.enable = tda19988_enable,
};
static const struct udevice_id tda19988_ids[] = {
{ .compatible = "nxp,tda998x" },
{ }
};
static int tda19988_probe(struct udevice *dev)
{
u8 cec_addr, chip_addr, rev_lo, rev_hi;
int err;
struct tda19988_priv *priv = dev_get_priv(dev);
chip_addr = dev_read_addr(dev);
/* CEC I2C address is using TDA19988 I2C address configuration pins */
cec_addr = 0x34 + (chip_addr & 0x03);
err = i2c_get_chip_for_busnum(0, cec_addr, 1, &priv->cec_chip);
if (err) {
printf("cec i2c_get_chip_for_busnum returned %d\n", err);
return err;
}
err = i2c_get_chip_for_busnum(0, chip_addr, 1, &priv->chip);
if (err) {
printf("i2c_get_chip_for_busnum returned %d\n", err);
return err;
}
priv->current_page = 0xff;
/* wake up device */
dm_i2c_reg_write(priv->cec_chip, TDA19988_CEC_ENAMODS,
CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
/* reset audio and I2C master */
tda19988_register_write(priv, REG_SOFTRESET,
SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER);
mdelay(50);
tda19988_register_write(priv, REG_SOFTRESET, 0);
mdelay(50);
/* reset transmitter */
tda19988_register_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
tda19988_register_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
/* PLL registers common configuration */
tda19988_register_write(priv, REG_PLL_SERIAL_1, 0x00);
tda19988_register_write(priv, REG_PLL_SERIAL_2,
PLL_SERIAL_2_SRL_NOSC(1));
tda19988_register_write(priv, REG_PLL_SERIAL_3, 0x00);
tda19988_register_write(priv, REG_SERIALIZER, 0x00);
tda19988_register_write(priv, REG_BUFFER_OUT, 0x00);
tda19988_register_write(priv, REG_PLL_SCG1, 0x00);
tda19988_register_write(priv, REG_AUDIO_DIV, AUDIO_DIV_SERCLK_8);
tda19988_register_write(priv, REG_SEL_CLK,
SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
tda19988_register_write(priv, REG_PLL_SCGN1, 0xfa);
tda19988_register_write(priv, REG_PLL_SCGN2, 0x00);
tda19988_register_write(priv, REG_PLL_SCGR1, 0x5b);
tda19988_register_write(priv, REG_PLL_SCGR2, 0x00);
tda19988_register_write(priv, REG_PLL_SCG2, 0x10);
/* Write the default value MUX register */
tda19988_register_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
/* read version */
rev_lo = dm_i2c_reg_read(priv->chip, REG_VERSION_LSB);
rev_hi = dm_i2c_reg_read(priv->chip, REG_VERSION_MSB);
/* mask off feature bits */
priv->revision = ((rev_hi << 8) | rev_lo) & ~0x30;
printf("HDMI: ");
switch (priv->revision) {
case TDA9989N2:
printf("TDA9989 n2\n");
break;
case TDA19989:
printf("TDA19989\n");
break;
case TDA19989N2:
printf("TDA19989 n2\n");
break;
case TDA19988:
printf("TDA19988\n");
break;
default:
printf("unknown TDA device: 0x%04x\n", priv->revision);
return -ENXIO;
}
/* after reset, enable DDC */
tda19988_register_write(priv, REG_DDC_DISABLE, 0x00);
/* set clock on DDC channel */
tda19988_register_write(priv, REG_TX3, 39);
/* if necessary, disable multi-master */
if (priv->revision == TDA19989)
tda19988_register_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
dm_i2c_reg_write(priv->cec_chip, REG_CEC_FRO_IM_CLK_CTRL,
CEC_FRO_IM_CLK_CTRL_GHOST_DIS |
CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
/* ensure interrupts are disabled */
dm_i2c_reg_write(priv->cec_chip, REG_CEC_RXSHPDINTENA, 0);
/* clear pending interrupts */
dm_i2c_reg_read(priv->cec_chip, REG_CEC_RXSHPDINT);
tda19988_register_read(priv, REG_INT_FLAGS_0);
tda19988_register_read(priv, REG_INT_FLAGS_1);
tda19988_register_read(priv, REG_INT_FLAGS_2);
/* enable EDID read irq */
tda19988_register_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
return 0;
}
U_BOOT_DRIVER(tda19988) = {
.name = "tda19988",
.id = UCLASS_DISPLAY,
.of_match = tda19988_ids,
.ops = &tda19988_ops,
.probe = tda19988_probe,
.priv_auto_alloc_size = sizeof(struct tda19988_priv),
};
Reference in a new issue Copy permalink