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u-boot/drivers/video/dw_hdmi.c
Jernej Skrabec cc232a9d07 rockchip: video: Split out HDMI controller code 
Designware HDMI controller and phy are used in other SoCs as well. Split
out platform independent code.

DW HDMI has 8 bit registers but they can be represented as 32 bit
registers as well. Add support to select access mode.

EDID reading code use reading by blocks which is not supported by other
SoCs in general. Make it more general using byte by byte approach, which
is also used in Linux driver.

Finally, not all DW HDMI controllers are accompanied with DW HDMI phy.
Support custom phys by making controller code independent from phy code.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Nickey Yang <nickey.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-04-04 20:01:57 -06:00

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/*
* Copyright (c) 2015 Google, Inc
* Copyright 2014 Rockchip Inc.
* Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <asm/io.h>
#include "dw_hdmi.h"
struct tmds_n_cts {
u32 tmds;
u32 cts;
u32 n;
};
static const struct tmds_n_cts n_cts_table[] = {
{
.tmds = 25175000, .n = 6144, .cts = 25175,
}, {
.tmds = 25200000, .n = 6144, .cts = 25200,
}, {
.tmds = 27000000, .n = 6144, .cts = 27000,
}, {
.tmds = 27027000, .n = 6144, .cts = 27027,
}, {
.tmds = 40000000, .n = 6144, .cts = 40000,
}, {
.tmds = 54000000, .n = 6144, .cts = 54000,
}, {
.tmds = 54054000, .n = 6144, .cts = 54054,
}, {
.tmds = 65000000, .n = 6144, .cts = 65000,
}, {
.tmds = 74176000, .n = 11648, .cts = 140625,
}, {
.tmds = 74250000, .n = 6144, .cts = 74250,
}, {
.tmds = 83500000, .n = 6144, .cts = 83500,
}, {
.tmds = 106500000, .n = 6144, .cts = 106500,
}, {
.tmds = 108000000, .n = 6144, .cts = 108000,
}, {
.tmds = 148352000, .n = 5824, .cts = 140625,
}, {
.tmds = 148500000, .n = 6144, .cts = 148500,
}, {
.tmds = 297000000, .n = 5120, .cts = 247500,
}
};
static void hdmi_write(struct dw_hdmi *hdmi, u8 val, int offset)
{
switch (hdmi->reg_io_width) {
case 1:
writeb(val, hdmi->ioaddr + offset);
break;
case 4:
writel(val, hdmi->ioaddr + (offset << 2));
break;
default:
debug("reg_io_width has unsupported width!\n");
break;
}
}
static u8 hdmi_read(struct dw_hdmi *hdmi, int offset)
{
switch (hdmi->reg_io_width) {
case 1:
return readb(hdmi->ioaddr + offset);
case 4:
return readl(hdmi->ioaddr + (offset << 2));
default:
debug("reg_io_width has unsupported width!\n");
break;
}
return 0;
}
static void hdmi_mod(struct dw_hdmi *hdmi, unsigned reg, u8 mask, u8 data)
{
u8 val = hdmi_read(hdmi, reg) & ~mask;
val |= data & mask;
hdmi_write(hdmi, val, reg);
}
static void hdmi_set_clock_regenerator(struct dw_hdmi *hdmi, u32 n, u32 cts)
{
uint cts3;
uint n3;
/* first set ncts_atomic_write (if present) */
n3 = HDMI_AUD_N3_NCTS_ATOMIC_WRITE;
hdmi_write(hdmi, n3, HDMI_AUD_N3);
/* set cts_manual (if present) */
cts3 = HDMI_AUD_CTS3_CTS_MANUAL;
cts3 |= HDMI_AUD_CTS3_N_SHIFT_1 << HDMI_AUD_CTS3_N_SHIFT_OFFSET;
cts3 |= (cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK;
/* write cts values; cts3 must be written first */
hdmi_write(hdmi, cts3, HDMI_AUD_CTS3);
hdmi_write(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
hdmi_write(hdmi, cts & 0xff, HDMI_AUD_CTS1);
/* write n values; n1 must be written last */
n3 |= (n >> 16) & HDMI_AUD_N3_AUDN19_16_MASK;
hdmi_write(hdmi, n3, HDMI_AUD_N3);
hdmi_write(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
hdmi_write(hdmi, n & 0xff, HDMI_AUD_N3);
hdmi_write(hdmi, HDMI_AUD_INPUTCLKFS_128, HDMI_AUD_INPUTCLKFS);
}
static int hdmi_lookup_n_cts(u32 pixel_clk)
{
int i;
for (i = 0; i < ARRAY_SIZE(n_cts_table); i++)
if (pixel_clk <= n_cts_table[i].tmds)
break;
if (i >= ARRAY_SIZE(n_cts_table))
return -1;
return i;
}
static void hdmi_audio_set_samplerate(struct dw_hdmi *hdmi, u32 pixel_clk)
{
u32 clk_n, clk_cts;
int index;
index = hdmi_lookup_n_cts(pixel_clk);
if (index == -1) {
debug("audio not supported for pixel clk %d\n", pixel_clk);
return;
}
clk_n = n_cts_table[index].n;
clk_cts = n_cts_table[index].cts;
hdmi_set_clock_regenerator(hdmi, clk_n, clk_cts);
}
/*
* this submodule is responsible for the video data synchronization.
* for example, for rgb 4:4:4 input, the data map is defined as
* pin{47~40} <==> r[7:0]
* pin{31~24} <==> g[7:0]
* pin{15~8} <==> b[7:0]
*/
static void hdmi_video_sample(struct dw_hdmi *hdmi)
{
u32 color_format = 0x01;
uint val;
val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
hdmi_write(hdmi, val, HDMI_TX_INVID0);
/* enable tx stuffing: when de is inactive, fix the output data to 0 */
val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
hdmi_write(hdmi, val, HDMI_TX_INSTUFFING);
hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA0);
hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA1);
hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA0);
hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA1);
hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA0);
hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA1);
}
static void hdmi_video_packetize(struct dw_hdmi *hdmi)
{
u32 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
u32 remap_size = HDMI_VP_REMAP_YCC422_16BIT;
u32 color_depth = 0;
uint val, vp_conf;
/* set the packetizer registers */
val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
((0 << HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
hdmi_write(hdmi, val, HDMI_VP_PR_CD);
hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PR_STUFFING_MASK,
HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE);
/* data from pixel repeater block */
vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_PR_EN_MASK |
HDMI_VP_CONF_BYPASS_SELECT_MASK, vp_conf);
hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_IDEFAULT_PHASE_MASK,
1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET);
hdmi_write(hdmi, remap_size, HDMI_VP_REMAP);
vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
HDMI_VP_CONF_PP_EN_DISABLE |
HDMI_VP_CONF_YCC422_EN_DISABLE;
hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_BYPASS_EN_MASK |
HDMI_VP_CONF_PP_EN_ENMASK | HDMI_VP_CONF_YCC422_EN_MASK,
vp_conf);
hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PP_STUFFING_MASK |
HDMI_VP_STUFF_YCC422_STUFFING_MASK,
HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE);
hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
output_select);
}
static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi, uint bit)
{
hdmi_mod(hdmi, HDMI_PHY_TST0, HDMI_PHY_TST0_TSTCLR_MASK,
bit << HDMI_PHY_TST0_TSTCLR_OFFSET);
}
static int hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, u32 msec)
{
ulong start;
u32 val;
start = get_timer(0);
do {
val = hdmi_read(hdmi, HDMI_IH_I2CMPHY_STAT0);
if (val & 0x3) {
hdmi_write(hdmi, val, HDMI_IH_I2CMPHY_STAT0);
return 0;
}
udelay(100);
} while (get_timer(start) < msec);
return 1;
}
static void hdmi_phy_i2c_write(struct dw_hdmi *hdmi, uint data, uint addr)
{
hdmi_write(hdmi, 0xff, HDMI_IH_I2CMPHY_STAT0);
hdmi_write(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
hdmi_write(hdmi, (u8)(data >> 8), HDMI_PHY_I2CM_DATAO_1_ADDR);
hdmi_write(hdmi, (u8)(data >> 0), HDMI_PHY_I2CM_DATAO_0_ADDR);
hdmi_write(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
HDMI_PHY_I2CM_OPERATION_ADDR);
hdmi_phy_wait_i2c_done(hdmi, 1000);
}
static void hdmi_phy_enable_power(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_PDZ_MASK,
enable << HDMI_PHY_CONF0_PDZ_OFFSET);
}
static void hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_ENTMDS_MASK,
enable << HDMI_PHY_CONF0_ENTMDS_OFFSET);
}
static void hdmi_phy_enable_spare(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SPARECTRL_MASK,
enable << HDMI_PHY_CONF0_SPARECTRL_OFFSET);
}
static void hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_GEN2_PDDQ_MASK,
enable << HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET);
}
static void hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0,
HDMI_PHY_CONF0_GEN2_TXPWRON_MASK,
enable << HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET);
}
static void hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0,
HDMI_PHY_CONF0_SELDATAENPOL_MASK,
enable << HDMI_PHY_CONF0_SELDATAENPOL_OFFSET);
}
static void hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi,
uint enable)
{
hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SELDIPIF_MASK,
enable << HDMI_PHY_CONF0_SELDIPIF_OFFSET);
}
static int hdmi_phy_configure(struct dw_hdmi *hdmi, u32 mpixelclock)
{
ulong start;
uint i, val;
if (!hdmi->mpll_cfg || !hdmi->phy_cfg)
return -1;
/* gen2 tx power off */
hdmi_phy_gen2_txpwron(hdmi, 0);
/* gen2 pddq */
hdmi_phy_gen2_pddq(hdmi, 1);
/* phy reset */
hdmi_write(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ);
hdmi_write(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ);
hdmi_write(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);
hdmi_phy_test_clear(hdmi, 1);
hdmi_write(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2,
HDMI_PHY_I2CM_SLAVE_ADDR);
hdmi_phy_test_clear(hdmi, 0);
/* pll/mpll cfg - always match on final entry */
for (i = 0; hdmi->mpll_cfg[i].mpixelclock != (~0ul); i++)
if (mpixelclock <= hdmi->mpll_cfg[i].mpixelclock)
break;
hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].cpce, PHY_OPMODE_PLLCFG);
hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].gmp, PHY_PLLGMPCTRL);
hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].curr, PHY_PLLCURRCTRL);
hdmi_phy_i2c_write(hdmi, 0x0000, PHY_PLLPHBYCTRL);
hdmi_phy_i2c_write(hdmi, 0x0006, PHY_PLLCLKBISTPHASE);
for (i = 0; hdmi->phy_cfg[i].mpixelclock != (~0ul); i++)
if (mpixelclock <= hdmi->phy_cfg[i].mpixelclock)
break;
/*
* resistance term 133ohm cfg
* preemp cgf 0.00
* tx/ck lvl 10
*/
hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].term, PHY_TXTERM);
hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].sym_ctr, PHY_CKSYMTXCTRL);
hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].vlev_ctr, PHY_VLEVCTRL);
/* remove clk term */
hdmi_phy_i2c_write(hdmi, 0x8000, PHY_CKCALCTRL);
hdmi_phy_enable_power(hdmi, 1);
/* toggle tmds enable */
hdmi_phy_enable_tmds(hdmi, 0);
hdmi_phy_enable_tmds(hdmi, 1);
/* gen2 tx power on */
hdmi_phy_gen2_txpwron(hdmi, 1);
hdmi_phy_gen2_pddq(hdmi, 0);
hdmi_phy_enable_spare(hdmi, 1);
/* wait for phy pll lock */
start = get_timer(0);
do {
val = hdmi_read(hdmi, HDMI_PHY_STAT0);
if (!(val & HDMI_PHY_TX_PHY_LOCK))
return 0;
udelay(100);
} while (get_timer(start) < 5);
return -1;
}
static void hdmi_av_composer(struct dw_hdmi *hdmi,
const struct display_timing *edid)
{
bool mdataenablepolarity = true;
uint inv_val;
uint hbl;
uint vbl;
hbl = edid->hback_porch.typ + edid->hfront_porch.typ +
edid->hsync_len.typ;
vbl = edid->vback_porch.typ + edid->vfront_porch.typ +
edid->vsync_len.typ;
/* set up hdmi_fc_invidconf */
inv_val = HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE;
inv_val |= (edid->flags & DISPLAY_FLAGS_HSYNC_HIGH ?
HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW);
inv_val |= (edid->flags & DISPLAY_FLAGS_VSYNC_HIGH ?
HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW);
inv_val |= (mdataenablepolarity ?
HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
/*
* TODO(sjg@chromium.org>: Need to check for HDMI / DVI
* inv_val |= (edid->hdmi_monitor_detected ?
* HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
* HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE);
*/
inv_val |= HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE;
inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
inv_val |= HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
hdmi_write(hdmi, inv_val, HDMI_FC_INVIDCONF);
/* set up horizontal active pixel width */
hdmi_write(hdmi, edid->hactive.typ >> 8, HDMI_FC_INHACTV1);
hdmi_write(hdmi, edid->hactive.typ, HDMI_FC_INHACTV0);
/* set up vertical active lines */
hdmi_write(hdmi, edid->vactive.typ >> 8, HDMI_FC_INVACTV1);
hdmi_write(hdmi, edid->vactive.typ, HDMI_FC_INVACTV0);
/* set up horizontal blanking pixel region width */
hdmi_write(hdmi, hbl >> 8, HDMI_FC_INHBLANK1);
hdmi_write(hdmi, hbl, HDMI_FC_INHBLANK0);
/* set up vertical blanking pixel region width */
hdmi_write(hdmi, vbl, HDMI_FC_INVBLANK);
/* set up hsync active edge delay width (in pixel clks) */
hdmi_write(hdmi, edid->hfront_porch.typ >> 8, HDMI_FC_HSYNCINDELAY1);
hdmi_write(hdmi, edid->hfront_porch.typ, HDMI_FC_HSYNCINDELAY0);
/* set up vsync active edge delay (in lines) */
hdmi_write(hdmi, edid->vfront_porch.typ, HDMI_FC_VSYNCINDELAY);
/* set up hsync active pulse width (in pixel clks) */
hdmi_write(hdmi, edid->hsync_len.typ >> 8, HDMI_FC_HSYNCINWIDTH1);
hdmi_write(hdmi, edid->hsync_len.typ, HDMI_FC_HSYNCINWIDTH0);
/* set up vsync active edge delay (in lines) */
hdmi_write(hdmi, edid->vsync_len.typ, HDMI_FC_VSYNCINWIDTH);
}
/* hdmi initialization step b.4 */
static void hdmi_enable_video_path(struct dw_hdmi *hdmi)
{
uint clkdis;
/* control period minimum duration */
hdmi_write(hdmi, 12, HDMI_FC_CTRLDUR);
hdmi_write(hdmi, 32, HDMI_FC_EXCTRLDUR);
hdmi_write(hdmi, 1, HDMI_FC_EXCTRLSPAC);
/* set to fill tmds data channels */
hdmi_write(hdmi, 0x0b, HDMI_FC_CH0PREAM);
hdmi_write(hdmi, 0x16, HDMI_FC_CH1PREAM);
hdmi_write(hdmi, 0x21, HDMI_FC_CH2PREAM);
hdmi_write(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
HDMI_MC_FLOWCTRL);
/* enable pixel clock and tmds data path */
clkdis = 0x7f;
clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
}
/* workaround to clear the overflow condition */
static void hdmi_clear_overflow(struct dw_hdmi *hdmi)
{
uint val, count;
/* tmds software reset */
hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);
val = hdmi_read(hdmi, HDMI_FC_INVIDCONF);
for (count = 0; count < 4; count++)
hdmi_write(hdmi, val, HDMI_FC_INVIDCONF);
}
static void hdmi_audio_set_format(struct dw_hdmi *hdmi)
{
hdmi_write(hdmi, HDMI_AUD_CONF0_I2S_SELECT | HDMI_AUD_CONF0_I2S_IN_EN_0,
HDMI_AUD_CONF0);
hdmi_write(hdmi, HDMI_AUD_CONF1_I2S_MODE_STANDARD_MODE |
HDMI_AUD_CONF1_I2S_WIDTH_16BIT, HDMI_AUD_CONF1);
hdmi_write(hdmi, 0x00, HDMI_AUD_CONF2);
}
static void hdmi_audio_fifo_reset(struct dw_hdmi *hdmi)
{
hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_II2SSWRST_REQ, HDMI_MC_SWRSTZ);
hdmi_write(hdmi, HDMI_AUD_CONF0_SW_AUDIO_FIFO_RST, HDMI_AUD_CONF0);
hdmi_write(hdmi, 0x00, HDMI_AUD_INT);
hdmi_write(hdmi, 0x00, HDMI_AUD_INT1);
}
static int hdmi_get_plug_in_status(struct dw_hdmi *hdmi)
{
uint val = hdmi_read(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD;
return !!val;
}
static int hdmi_ddc_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
{
u32 val;
ulong start;
start = get_timer(0);
do {
val = hdmi_read(hdmi, HDMI_IH_I2CM_STAT0);
if (val & 0x2) {
hdmi_write(hdmi, val, HDMI_IH_I2CM_STAT0);
return 0;
}
udelay(100);
} while (get_timer(start) < msec);
return 1;
}
static void hdmi_ddc_reset(struct dw_hdmi *hdmi)
{
hdmi_mod(hdmi, HDMI_I2CM_SOFTRSTZ, HDMI_I2CM_SOFTRSTZ_MASK, 0);
}
static int hdmi_read_edid(struct dw_hdmi *hdmi, int block, u8 *buff)
{
int shift = (block % 2) * 0x80;
int edid_read_err = 0;
u32 trytime = 5;
u32 n;
/* set ddc i2c clk which devided from ddc_clk to 100khz */
hdmi_write(hdmi, hdmi->i2c_clk_high, HDMI_I2CM_SS_SCL_HCNT_0_ADDR);
hdmi_write(hdmi, hdmi->i2c_clk_low, HDMI_I2CM_SS_SCL_LCNT_0_ADDR);
hdmi_mod(hdmi, HDMI_I2CM_DIV, HDMI_I2CM_DIV_FAST_STD_MODE,
HDMI_I2CM_DIV_STD_MODE);
hdmi_write(hdmi, HDMI_I2CM_SLAVE_DDC_ADDR, HDMI_I2CM_SLAVE);
hdmi_write(hdmi, HDMI_I2CM_SEGADDR_DDC, HDMI_I2CM_SEGADDR);
hdmi_write(hdmi, block >> 1, HDMI_I2CM_SEGPTR);
while (trytime--) {
edid_read_err = 0;
for (n = 0; n < HDMI_EDID_BLOCK_SIZE; n++) {
hdmi_write(hdmi, shift + n, HDMI_I2CM_ADDRESS);
if (block == 0)
hdmi_write(hdmi, HDMI_I2CM_OP_RD8,
HDMI_I2CM_OPERATION);
else
hdmi_write(hdmi, HDMI_I2CM_OP_RD8_EXT,
HDMI_I2CM_OPERATION);
if (hdmi_ddc_wait_i2c_done(hdmi, 10)) {
hdmi_ddc_reset(hdmi);
edid_read_err = 1;
break;
}
buff[n] = hdmi_read(hdmi, HDMI_I2CM_DATAI);
}
if (!edid_read_err)
break;
}
return edid_read_err;
}
static const u8 pre_buf[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
0x04, 0x69, 0xfa, 0x23, 0xc8, 0x28, 0x01, 0x00,
0x10, 0x17, 0x01, 0x03, 0x80, 0x33, 0x1d, 0x78,
0x2a, 0xd9, 0x45, 0xa2, 0x55, 0x4d, 0xa0, 0x27,
0x12, 0x50, 0x54, 0xb7, 0xef, 0x00, 0x71, 0x4f,
0x81, 0x40, 0x81, 0x80, 0x95, 0x00, 0xb3, 0x00,
0xd1, 0xc0, 0x81, 0xc0, 0x81, 0x00, 0x02, 0x3a,
0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
0x45, 0x00, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e,
0x00, 0x00, 0x00, 0xff, 0x00, 0x44, 0x34, 0x4c,
0x4d, 0x54, 0x46, 0x30, 0x37, 0x35, 0x39, 0x37,
0x36, 0x0a, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
0x4b, 0x18, 0x53, 0x11, 0x00, 0x0a, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x41, 0x53, 0x55, 0x53, 0x20, 0x56, 0x53,
0x32, 0x33, 0x38, 0x0a, 0x20, 0x20, 0x01, 0xb0,
0x02, 0x03, 0x22, 0x71, 0x4f, 0x01, 0x02, 0x03,
0x11, 0x12, 0x13, 0x04, 0x14, 0x05, 0x0e, 0x0f,
0x1d, 0x1e, 0x1f, 0x10, 0x23, 0x09, 0x17, 0x07,
0x83, 0x01, 0x00, 0x00, 0x65, 0x03, 0x0c, 0x00,
0x10, 0x00, 0x8c, 0x0a, 0xd0, 0x8a, 0x20, 0xe0,
0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xfd, 0x1e,
0x11, 0x00, 0x00, 0x18, 0x01, 0x1d, 0x00, 0x72,
0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00,
0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 0x01, 0x1d,
0x00, 0xbc, 0x52, 0xd0, 0x1e, 0x20, 0xb8, 0x28,
0x55, 0x40, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e,
0x8c, 0x0a, 0xd0, 0x90, 0x20, 0x40, 0x31, 0x20,
0x0c, 0x40, 0x55, 0x00, 0xfd, 0x1e, 0x11, 0x00,
0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe9,
};
int dw_hdmi_phy_cfg(struct dw_hdmi *hdmi, uint mpixelclock)
{
int i, ret;
/* hdmi phy spec says to do the phy initialization sequence twice */
for (i = 0; i < 2; i++) {
hdmi_phy_sel_data_en_pol(hdmi, 1);
hdmi_phy_sel_interface_control(hdmi, 0);
hdmi_phy_enable_tmds(hdmi, 0);
hdmi_phy_enable_power(hdmi, 0);
ret = hdmi_phy_configure(hdmi, mpixelclock);
if (ret) {
debug("hdmi phy config failure %d\n", ret);
return ret;
}
}
return 0;
}
int dw_hdmi_phy_wait_for_hpd(struct dw_hdmi *hdmi)
{
ulong start;
start = get_timer(0);
do {
if (hdmi_get_plug_in_status(hdmi))
return 0;
udelay(100);
} while (get_timer(start) < 300);
return -1;
}
void dw_hdmi_phy_init(struct dw_hdmi *hdmi)
{
/* enable phy i2cm done irq */
hdmi_write(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
HDMI_PHY_I2CM_INT_ADDR);
/* enable phy i2cm nack & arbitration error irq */
hdmi_write(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
HDMI_PHY_I2CM_CTLINT_ADDR);
/* enable cable hot plug irq */
hdmi_write(hdmi, (u8)~HDMI_PHY_HPD, HDMI_PHY_MASK0);
/* clear hotplug interrupts */
hdmi_write(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0);
}
int dw_hdmi_read_edid(struct dw_hdmi *hdmi, u8 *buf, int buf_size)
{
u32 edid_size = HDMI_EDID_BLOCK_SIZE;
int ret;
if (0) {
edid_size = sizeof(pre_buf);
memcpy(buf, pre_buf, edid_size);
} else {
ret = hdmi_read_edid(hdmi, 0, buf);
if (ret) {
debug("failed to read edid.\n");
return -1;
}
if (buf[0x7e] != 0) {
hdmi_read_edid(hdmi, 1, buf + HDMI_EDID_BLOCK_SIZE);
edid_size += HDMI_EDID_BLOCK_SIZE;
}
}
return edid_size;
}
int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid)
{
int ret;
debug("hdmi, mode info : clock %d hdis %d vdis %d\n",
edid->pixelclock.typ, edid->hactive.typ, edid->vactive.typ);
hdmi_av_composer(hdmi, edid);
ret = hdmi->phy_set(hdmi, edid->pixelclock.typ);
if (ret)
return ret;
hdmi_enable_video_path(hdmi);
hdmi_audio_fifo_reset(hdmi);
hdmi_audio_set_format(hdmi);
hdmi_audio_set_samplerate(hdmi, edid->pixelclock.typ);
hdmi_video_packetize(hdmi);
hdmi_video_sample(hdmi);
hdmi_clear_overflow(hdmi);
return 0;
}
void dw_hdmi_init(struct dw_hdmi *hdmi)
{
uint ih_mute;
/*
* boot up defaults are:
* hdmi_ih_mute = 0x03 (disabled)
* hdmi_ih_mute_* = 0x00 (enabled)
*
* disable top level interrupt bits in hdmi block
*/
ih_mute = /*hdmi_read(hdmi, HDMI_IH_MUTE) |*/
HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
hdmi_write(hdmi, ih_mute, HDMI_IH_MUTE);
/* enable i2c master done irq */
hdmi_write(hdmi, ~0x04, HDMI_I2CM_INT);
/* enable i2c client nack % arbitration error irq */
hdmi_write(hdmi, ~0x44, HDMI_I2CM_CTLINT);
}
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