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kernel-ark/drivers/gpu/host1x/drm/hdmi.c
Dave Airlie ef25bd84ed drm/tegra: Changes for v3.12-rc1 
Only a couple of small patches this time around. These are mostly fixes
 for minor bugs that showed up, but there is also some preparatory work
 that will come in handy for future patches.
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Merge tag 'drm/for-3.12-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v3.12-rc1

Only a couple of small patches this time around. These are mostly fixes
for minor bugs that showed up, but there is also some preparatory work
that will come in handy for future patches.

* tag 'drm/for-3.12-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: Parse device tree earlier
  gpu: host1x: Sort drivers by probe order
  gpu: host1x: Check for valid host1x pointer
  gpu: host1x: returning success instead of -ENOMEM
  gpu: host1x: fix an integer overflow check
  drm/tegra: hdmi: Make sure clock is enabled before dumping registers
2013-09-04 09:01:02 +10:00

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/*
* Copyright (C) 2012 Avionic Design GmbH
* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/gpio.h>
#include <linux/hdmi.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/clk/tegra.h>
#include <drm/drm_edid.h>
#include "hdmi.h"
#include "drm.h"
#include "dc.h"
#include "host1x_client.h"
struct tegra_hdmi {
struct host1x_client client;
struct tegra_output output;
struct device *dev;
struct regulator *vdd;
struct regulator *pll;
void __iomem *regs;
unsigned int irq;
struct clk *clk_parent;
struct clk *clk;
unsigned int audio_source;
unsigned int audio_freq;
bool stereo;
bool dvi;
struct drm_info_list *debugfs_files;
struct drm_minor *minor;
struct dentry *debugfs;
};
static inline struct tegra_hdmi *
host1x_client_to_hdmi(struct host1x_client *client)
{
return container_of(client, struct tegra_hdmi, client);
}
static inline struct tegra_hdmi *to_hdmi(struct tegra_output *output)
{
return container_of(output, struct tegra_hdmi, output);
}
#define HDMI_AUDIOCLK_FREQ 216000000
#define HDMI_REKEY_DEFAULT 56
enum {
AUTO = 0,
SPDIF,
HDA,
};
static inline unsigned long tegra_hdmi_readl(struct tegra_hdmi *hdmi,
unsigned long reg)
{
return readl(hdmi->regs + (reg << 2));
}
static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, unsigned long val,
unsigned long reg)
{
writel(val, hdmi->regs + (reg << 2));
}
struct tegra_hdmi_audio_config {
unsigned int pclk;
unsigned int n;
unsigned int cts;
unsigned int aval;
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_32k[] = {
{ 25200000, 4096, 25200, 24000 },
{ 27000000, 4096, 27000, 24000 },
{ 74250000, 4096, 74250, 24000 },
{ 148500000, 4096, 148500, 24000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_44_1k[] = {
{ 25200000, 5880, 26250, 25000 },
{ 27000000, 5880, 28125, 25000 },
{ 74250000, 4704, 61875, 20000 },
{ 148500000, 4704, 123750, 20000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_48k[] = {
{ 25200000, 6144, 25200, 24000 },
{ 27000000, 6144, 27000, 24000 },
{ 74250000, 6144, 74250, 24000 },
{ 148500000, 6144, 148500, 24000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_88_2k[] = {
{ 25200000, 11760, 26250, 25000 },
{ 27000000, 11760, 28125, 25000 },
{ 74250000, 9408, 61875, 20000 },
{ 148500000, 9408, 123750, 20000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_96k[] = {
{ 25200000, 12288, 25200, 24000 },
{ 27000000, 12288, 27000, 24000 },
{ 74250000, 12288, 74250, 24000 },
{ 148500000, 12288, 148500, 24000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_176_4k[] = {
{ 25200000, 23520, 26250, 25000 },
{ 27000000, 23520, 28125, 25000 },
{ 74250000, 18816, 61875, 20000 },
{ 148500000, 18816, 123750, 20000 },
{ 0, 0, 0, 0 },
};
static const struct tegra_hdmi_audio_config tegra_hdmi_audio_192k[] = {
{ 25200000, 24576, 25200, 24000 },
{ 27000000, 24576, 27000, 24000 },
{ 74250000, 24576, 74250, 24000 },
{ 148500000, 24576, 148500, 24000 },
{ 0, 0, 0, 0 },
};
struct tmds_config {
unsigned int pclk;
u32 pll0;
u32 pll1;
u32 pe_current;
u32 drive_current;
};
static const struct tmds_config tegra2_tmds_config[] = {
{ /* slow pixel clock modes */
.pclk = 27000000,
.pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
SOR_PLL_TX_REG_LOAD(3),
.pll1 = SOR_PLL_TMDS_TERM_ENABLE,
.pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
PE_CURRENT1(PE_CURRENT_0_0_mA) |
PE_CURRENT2(PE_CURRENT_0_0_mA) |
PE_CURRENT3(PE_CURRENT_0_0_mA),
.drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
},
{ /* high pixel clock modes */
.pclk = UINT_MAX,
.pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
SOR_PLL_TX_REG_LOAD(3),
.pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
.pe_current = PE_CURRENT0(PE_CURRENT_6_0_mA) |
PE_CURRENT1(PE_CURRENT_6_0_mA) |
PE_CURRENT2(PE_CURRENT_6_0_mA) |
PE_CURRENT3(PE_CURRENT_6_0_mA),
.drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
},
};
static const struct tmds_config tegra3_tmds_config[] = {
{ /* 480p modes */
.pclk = 27000000,
.pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
SOR_PLL_TX_REG_LOAD(0),
.pll1 = SOR_PLL_TMDS_TERM_ENABLE,
.pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
PE_CURRENT1(PE_CURRENT_0_0_mA) |
PE_CURRENT2(PE_CURRENT_0_0_mA) |
PE_CURRENT3(PE_CURRENT_0_0_mA),
.drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
}, { /* 720p modes */
.pclk = 74250000,
.pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
SOR_PLL_TX_REG_LOAD(0),
.pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
.pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
PE_CURRENT1(PE_CURRENT_5_0_mA) |
PE_CURRENT2(PE_CURRENT_5_0_mA) |
PE_CURRENT3(PE_CURRENT_5_0_mA),
.drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
}, { /* 1080p modes */
.pclk = UINT_MAX,
.pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(3) |
SOR_PLL_TX_REG_LOAD(0),
.pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
.pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
PE_CURRENT1(PE_CURRENT_5_0_mA) |
PE_CURRENT2(PE_CURRENT_5_0_mA) |
PE_CURRENT3(PE_CURRENT_5_0_mA),
.drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
},
};
static const struct tegra_hdmi_audio_config *
tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pclk)
{
const struct tegra_hdmi_audio_config *table;
switch (audio_freq) {
case 32000:
table = tegra_hdmi_audio_32k;
break;
case 44100:
table = tegra_hdmi_audio_44_1k;
break;
case 48000:
table = tegra_hdmi_audio_48k;
break;
case 88200:
table = tegra_hdmi_audio_88_2k;
break;
case 96000:
table = tegra_hdmi_audio_96k;
break;
case 176400:
table = tegra_hdmi_audio_176_4k;
break;
case 192000:
table = tegra_hdmi_audio_192k;
break;
default:
return NULL;
}
while (table->pclk) {
if (table->pclk == pclk)
return table;
table++;
}
return NULL;
}
static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi)
{
const unsigned int freqs[] = {
32000, 44100, 48000, 88200, 96000, 176400, 192000
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(freqs); i++) {
unsigned int f = freqs[i];
unsigned int eight_half;
unsigned long value;
unsigned int delta;
if (f > 96000)
delta = 2;
else if (f > 480000)
delta = 6;
else
delta = 9;
eight_half = (8 * HDMI_AUDIOCLK_FREQ) / (f * 128);
value = AUDIO_FS_LOW(eight_half - delta) |
AUDIO_FS_HIGH(eight_half + delta);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_FS(i));
}
}
static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi, unsigned int pclk)
{
struct device_node *node = hdmi->dev->of_node;
const struct tegra_hdmi_audio_config *config;
unsigned int offset = 0;
unsigned long value;
switch (hdmi->audio_source) {
case HDA:
value = AUDIO_CNTRL0_SOURCE_SELECT_HDAL;
break;
case SPDIF:
value = AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
break;
default:
value = AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
break;
}
if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) {
value |= AUDIO_CNTRL0_ERROR_TOLERANCE(6) |
AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
} else {
value |= AUDIO_CNTRL0_INJECT_NULLSMPL;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
value = AUDIO_CNTRL0_ERROR_TOLERANCE(6) |
AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
}
config = tegra_hdmi_get_audio_config(hdmi->audio_freq, pclk);
if (!config) {
dev_err(hdmi->dev, "cannot set audio to %u at %u pclk\n",
hdmi->audio_freq, pclk);
return -EINVAL;
}
tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_ACR_CTRL);
value = AUDIO_N_RESETF | AUDIO_N_GENERATE_ALTERNATE |
AUDIO_N_VALUE(config->n - 1);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
tegra_hdmi_writel(hdmi, ACR_SUBPACK_N(config->n) | ACR_ENABLE,
HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
value = ACR_SUBPACK_CTS(config->cts);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
value = SPARE_HW_CTS | SPARE_FORCE_SW_CTS | SPARE_CTS_RESET_VAL(1);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_SPARE);
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_AUDIO_N);
value &= ~AUDIO_N_RESETF;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) {
switch (hdmi->audio_freq) {
case 32000:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0320;
break;
case 44100:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0441;
break;
case 48000:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0480;
break;
case 88200:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0882;
break;
case 96000:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0960;
break;
case 176400:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1764;
break;
case 192000:
offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1920;
break;
}
tegra_hdmi_writel(hdmi, config->aval, offset);
}
tegra_hdmi_setup_audio_fs_tables(hdmi);
return 0;
}
static inline unsigned long tegra_hdmi_subpack(const u8 *ptr, size_t size)
{
unsigned long value = 0;
size_t i;
for (i = size; i > 0; i--)
value = (value << 8) | ptr[i - 1];
return value;
}
static void tegra_hdmi_write_infopack(struct tegra_hdmi *hdmi, const void *data,
size_t size)
{
const u8 *ptr = data;
unsigned long offset;
unsigned long value;
size_t i, j;
switch (ptr[0]) {
case HDMI_INFOFRAME_TYPE_AVI:
offset = HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER;
break;
case HDMI_INFOFRAME_TYPE_AUDIO:
offset = HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER;
break;
case HDMI_INFOFRAME_TYPE_VENDOR:
offset = HDMI_NV_PDISP_HDMI_GENERIC_HEADER;
break;
default:
dev_err(hdmi->dev, "unsupported infoframe type: %02x\n",
ptr[0]);
return;
}
value = INFOFRAME_HEADER_TYPE(ptr[0]) |
INFOFRAME_HEADER_VERSION(ptr[1]) |
INFOFRAME_HEADER_LEN(ptr[2]);
tegra_hdmi_writel(hdmi, value, offset);
offset++;
/*
* Each subpack contains 7 bytes, divided into:
* - subpack_low: bytes 0 - 3
* - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00)
*/
for (i = 3, j = 0; i < size; i += 7, j += 8) {
size_t rem = size - i, num = min_t(size_t, rem, 4);
value = tegra_hdmi_subpack(&ptr[i], num);
tegra_hdmi_writel(hdmi, value, offset++);
num = min_t(size_t, rem - num, 3);
value = tegra_hdmi_subpack(&ptr[i + 4], num);
tegra_hdmi_writel(hdmi, value, offset++);
}
}
static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
struct drm_display_mode *mode)
{
struct hdmi_avi_infoframe frame;
u8 buffer[17];
ssize_t err;
if (hdmi->dvi) {
tegra_hdmi_writel(hdmi, 0,
HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
return;
}
err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
if (err < 0) {
dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err);
return;
}
err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
if (err < 0) {
dev_err(hdmi->dev, "failed to pack AVI infoframe: %zd\n", err);
return;
}
tegra_hdmi_write_infopack(hdmi, buffer, err);
tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE,
HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
}
static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi)
{
struct hdmi_audio_infoframe frame;
u8 buffer[14];
ssize_t err;
if (hdmi->dvi) {
tegra_hdmi_writel(hdmi, 0,
HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
return;
}
err = hdmi_audio_infoframe_init(&frame);
if (err < 0) {
dev_err(hdmi->dev, "failed to initialize audio infoframe: %d\n",
err);
return;
}
frame.channels = 2;
err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
if (err < 0) {
dev_err(hdmi->dev, "failed to pack audio infoframe: %zd\n",
err);
return;
}
/*
* The audio infoframe has only one set of subpack registers, so the
* infoframe needs to be truncated. One set of subpack registers can
* contain 7 bytes. Including the 3 byte header only the first 10
* bytes can be programmed.
*/
tegra_hdmi_write_infopack(hdmi, buffer, min(10, err));
tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE,
HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
}
static void tegra_hdmi_setup_stereo_infoframe(struct tegra_hdmi *hdmi)
{
struct hdmi_vendor_infoframe frame;
unsigned long value;
u8 buffer[10];
ssize_t err;
if (!hdmi->stereo) {
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
value &= ~GENERIC_CTRL_ENABLE;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
return;
}
hdmi_vendor_infoframe_init(&frame);
frame.s3d_struct = HDMI_3D_STRUCTURE_FRAME_PACKING;
err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
if (err < 0) {
dev_err(hdmi->dev, "failed to pack vendor infoframe: %zd\n",
err);
return;
}
tegra_hdmi_write_infopack(hdmi, buffer, err);
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
value |= GENERIC_CTRL_ENABLE;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
}
static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi,
const struct tmds_config *tmds)
{
unsigned long value;
tegra_hdmi_writel(hdmi, tmds->pll0, HDMI_NV_PDISP_SOR_PLL0);
tegra_hdmi_writel(hdmi, tmds->pll1, HDMI_NV_PDISP_SOR_PLL1);
tegra_hdmi_writel(hdmi, tmds->pe_current, HDMI_NV_PDISP_PE_CURRENT);
value = tmds->drive_current | DRIVE_CURRENT_FUSE_OVERRIDE;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
}
static int tegra_output_hdmi_enable(struct tegra_output *output)
{
unsigned int h_sync_width, h_front_porch, h_back_porch, i, rekey;
struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc);
struct drm_display_mode *mode = &dc->base.mode;
struct tegra_hdmi *hdmi = to_hdmi(output);
struct device_node *node = hdmi->dev->of_node;
unsigned int pulse_start, div82, pclk;
const struct tmds_config *tmds;
unsigned int num_tmds;
unsigned long value;
int retries = 1000;
int err;
pclk = mode->clock * 1000;
h_sync_width = mode->hsync_end - mode->hsync_start;
h_back_porch = mode->htotal - mode->hsync_end;
h_front_porch = mode->hsync_start - mode->hdisplay;
err = regulator_enable(hdmi->vdd);
if (err < 0) {
dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
return err;
}
err = regulator_enable(hdmi->pll);
if (err < 0) {
dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
return err;
}
/*
* This assumes that the display controller will divide its parent
* clock by 2 to generate the pixel clock.
*/
err = tegra_output_setup_clock(output, hdmi->clk, pclk * 2);
if (err < 0) {
dev_err(hdmi->dev, "failed to setup clock: %d\n", err);
return err;
}
err = clk_set_rate(hdmi->clk, pclk);
if (err < 0)
return err;
err = clk_enable(hdmi->clk);
if (err < 0) {
dev_err(hdmi->dev, "failed to enable clock: %d\n", err);
return err;
}
tegra_periph_reset_assert(hdmi->clk);
usleep_range(1000, 2000);
tegra_periph_reset_deassert(hdmi->clk);
tegra_dc_writel(dc, VSYNC_H_POSITION(1),
DC_DISP_DISP_TIMING_OPTIONS);
tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888,
DC_DISP_DISP_COLOR_CONTROL);
/* video_preamble uses h_pulse2 */
pulse_start = 1 + h_sync_width + h_back_porch - 10;
tegra_dc_writel(dc, H_PULSE_2_ENABLE, DC_DISP_DISP_SIGNAL_OPTIONS0);
value = PULSE_MODE_NORMAL | PULSE_POLARITY_HIGH | PULSE_QUAL_VACTIVE |
PULSE_LAST_END_A;
tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL);
value = PULSE_START(pulse_start) | PULSE_END(pulse_start + 8);
tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A);
value = VSYNC_WINDOW_END(0x210) | VSYNC_WINDOW_START(0x200) |
VSYNC_WINDOW_ENABLE;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
if (dc->pipe)
value = HDMI_SRC_DISPLAYB;
else
value = HDMI_SRC_DISPLAYA;
if ((mode->hdisplay == 720) && ((mode->vdisplay == 480) ||
(mode->vdisplay == 576)))
tegra_hdmi_writel(hdmi,
value | ARM_VIDEO_RANGE_FULL,
HDMI_NV_PDISP_INPUT_CONTROL);
else
tegra_hdmi_writel(hdmi,
value | ARM_VIDEO_RANGE_LIMITED,
HDMI_NV_PDISP_INPUT_CONTROL);
div82 = clk_get_rate(hdmi->clk) / 1000000 * 4;
value = SOR_REFCLK_DIV_INT(div82 >> 2) | SOR_REFCLK_DIV_FRAC(div82);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_REFCLK);
if (!hdmi->dvi) {
err = tegra_hdmi_setup_audio(hdmi, pclk);
if (err < 0)
hdmi->dvi = true;
}
if (of_device_is_compatible(node, "nvidia,tegra20-hdmi")) {
/*
* TODO: add ELD support
*/
}
rekey = HDMI_REKEY_DEFAULT;
value = HDMI_CTRL_REKEY(rekey);
value |= HDMI_CTRL_MAX_AC_PACKET((h_sync_width + h_back_porch +
h_front_porch - rekey - 18) / 32);
if (!hdmi->dvi)
value |= HDMI_CTRL_ENABLE;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_CTRL);
if (hdmi->dvi)
tegra_hdmi_writel(hdmi, 0x0,
HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
else
tegra_hdmi_writel(hdmi, GENERIC_CTRL_AUDIO,
HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
tegra_hdmi_setup_avi_infoframe(hdmi, mode);
tegra_hdmi_setup_audio_infoframe(hdmi);
tegra_hdmi_setup_stereo_infoframe(hdmi);
/* TMDS CONFIG */
if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) {
num_tmds = ARRAY_SIZE(tegra3_tmds_config);
tmds = tegra3_tmds_config;
} else {
num_tmds = ARRAY_SIZE(tegra2_tmds_config);
tmds = tegra2_tmds_config;
}
for (i = 0; i < num_tmds; i++) {
if (pclk <= tmds[i].pclk) {
tegra_hdmi_setup_tmds(hdmi, &tmds[i]);
break;
}
}
tegra_hdmi_writel(hdmi,
SOR_SEQ_CTL_PU_PC(0) |
SOR_SEQ_PU_PC_ALT(0) |
SOR_SEQ_PD_PC(8) |
SOR_SEQ_PD_PC_ALT(8),
HDMI_NV_PDISP_SOR_SEQ_CTL);
value = SOR_SEQ_INST_WAIT_TIME(1) |
SOR_SEQ_INST_WAIT_UNITS_VSYNC |
SOR_SEQ_INST_HALT |
SOR_SEQ_INST_PIN_A_LOW |
SOR_SEQ_INST_PIN_B_LOW |
SOR_SEQ_INST_DRIVE_PWM_OUT_LO;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0));
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8));
value = 0x1c800;
value &= ~SOR_CSTM_ROTCLK(~0);
value |= SOR_CSTM_ROTCLK(2);
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM);
tegra_dc_writel(dc, DISP_CTRL_MODE_STOP, DC_CMD_DISPLAY_COMMAND);
tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
/* start SOR */
tegra_hdmi_writel(hdmi,
SOR_PWR_NORMAL_STATE_PU |
SOR_PWR_NORMAL_START_NORMAL |
SOR_PWR_SAFE_STATE_PD |
SOR_PWR_SETTING_NEW_TRIGGER,
HDMI_NV_PDISP_SOR_PWR);
tegra_hdmi_writel(hdmi,
SOR_PWR_NORMAL_STATE_PU |
SOR_PWR_NORMAL_START_NORMAL |
SOR_PWR_SAFE_STATE_PD |
SOR_PWR_SETTING_NEW_DONE,
HDMI_NV_PDISP_SOR_PWR);
do {
BUG_ON(--retries < 0);
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PWR);
} while (value & SOR_PWR_SETTING_NEW_PENDING);
value = SOR_STATE_ASY_CRCMODE_COMPLETE |
SOR_STATE_ASY_OWNER_HEAD0 |
SOR_STATE_ASY_SUBOWNER_BOTH |
SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A |
SOR_STATE_ASY_DEPOL_POS;
/* setup sync polarities */
if (mode->flags & DRM_MODE_FLAG_PHSYNC)
value |= SOR_STATE_ASY_HSYNCPOL_POS;
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
value |= SOR_STATE_ASY_HSYNCPOL_NEG;
if (mode->flags & DRM_MODE_FLAG_PVSYNC)
value |= SOR_STATE_ASY_VSYNCPOL_POS;
if (mode->flags & DRM_MODE_FLAG_NVSYNC)
value |= SOR_STATE_ASY_VSYNCPOL_NEG;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE2);
value = SOR_STATE_ASY_HEAD_OPMODE_AWAKE | SOR_STATE_ASY_ORMODE_NORMAL;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE1);
tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
tegra_hdmi_writel(hdmi, SOR_STATE_UPDATE, HDMI_NV_PDISP_SOR_STATE0);
tegra_hdmi_writel(hdmi, value | SOR_STATE_ATTACHED,
HDMI_NV_PDISP_SOR_STATE1);
tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
tegra_dc_writel(dc, HDMI_ENABLE, DC_DISP_DISP_WIN_OPTIONS);
value = PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
value = DISP_CTRL_MODE_C_DISPLAY;
tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
/* TODO: add HDCP support */
return 0;
}
static int tegra_output_hdmi_disable(struct tegra_output *output)
{
struct tegra_hdmi *hdmi = to_hdmi(output);
tegra_periph_reset_assert(hdmi->clk);
clk_disable(hdmi->clk);
regulator_disable(hdmi->pll);
regulator_disable(hdmi->vdd);
return 0;
}
static int tegra_output_hdmi_setup_clock(struct tegra_output *output,
struct clk *clk, unsigned long pclk)
{
struct tegra_hdmi *hdmi = to_hdmi(output);
struct clk *base;
int err;
err = clk_set_parent(clk, hdmi->clk_parent);
if (err < 0) {
dev_err(output->dev, "failed to set parent: %d\n", err);
return err;
}
base = clk_get_parent(hdmi->clk_parent);
/*
* This assumes that the parent clock is pll_d_out0 or pll_d2_out
* respectively, each of which divides the base pll_d by 2.
*/
err = clk_set_rate(base, pclk * 2);
if (err < 0)
dev_err(output->dev,
"failed to set base clock rate to %lu Hz\n",
pclk * 2);
return 0;
}
static int tegra_output_hdmi_check_mode(struct tegra_output *output,
struct drm_display_mode *mode,
enum drm_mode_status *status)
{
struct tegra_hdmi *hdmi = to_hdmi(output);
unsigned long pclk = mode->clock * 1000;
struct clk *parent;
long err;
parent = clk_get_parent(hdmi->clk_parent);
err = clk_round_rate(parent, pclk * 4);
if (err < 0)
*status = MODE_NOCLOCK;
else
*status = MODE_OK;
return 0;
}
static const struct tegra_output_ops hdmi_ops = {
.enable = tegra_output_hdmi_enable,
.disable = tegra_output_hdmi_disable,
.setup_clock = tegra_output_hdmi_setup_clock,
.check_mode = tegra_output_hdmi_check_mode,
};
static int tegra_hdmi_show_regs(struct seq_file *s, void *data)
{
struct drm_info_node *node = s->private;
struct tegra_hdmi *hdmi = node->info_ent->data;
int err;
err = clk_enable(hdmi->clk);
if (err)
return err;
#define DUMP_REG(name) \
seq_printf(s, "%-56s %#05x %08lx\n", #name, name, \
tegra_hdmi_readl(hdmi, name))
DUMP_REG(HDMI_CTXSW);
DUMP_REG(HDMI_NV_PDISP_SOR_STATE0);
DUMP_REG(HDMI_NV_PDISP_SOR_STATE1);
DUMP_REG(HDMI_NV_PDISP_SOR_STATE2);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CTRL);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CMODE);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_LSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB2);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB1);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_RI);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_MSB);
DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_LSB);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU0);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU_RDATA0);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU1);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU2);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_STATUS);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_STATUS);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_STATUS);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_HEADER);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_LOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_HIGH);
DUMP_REG(HDMI_NV_PDISP_HDMI_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_KEEPOUT);
DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_CTRL);
DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_STATUS);
DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_SUBPACK);
DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS1);
DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS2);
DUMP_REG(HDMI_NV_PDISP_HDMI_EMU0);
DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1);
DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1_RDATA);
DUMP_REG(HDMI_NV_PDISP_HDMI_SPARE);
DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS1);
DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS2);
DUMP_REG(HDMI_NV_PDISP_HDMI_HDCPRIF_ROM_CTRL);
DUMP_REG(HDMI_NV_PDISP_SOR_CAP);
DUMP_REG(HDMI_NV_PDISP_SOR_PWR);
DUMP_REG(HDMI_NV_PDISP_SOR_TEST);
DUMP_REG(HDMI_NV_PDISP_SOR_PLL0);
DUMP_REG(HDMI_NV_PDISP_SOR_PLL1);
DUMP_REG(HDMI_NV_PDISP_SOR_PLL2);
DUMP_REG(HDMI_NV_PDISP_SOR_CSTM);
DUMP_REG(HDMI_NV_PDISP_SOR_LVDS);
DUMP_REG(HDMI_NV_PDISP_SOR_CRCA);
DUMP_REG(HDMI_NV_PDISP_SOR_CRCB);
DUMP_REG(HDMI_NV_PDISP_SOR_BLANK);
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_CTL);
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(0));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(1));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(2));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(3));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(4));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(5));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(6));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(7));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(8));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(9));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(10));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(11));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(12));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(13));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(14));
DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(15));
DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA0);
DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA1);
DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA0);
DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA1);
DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA0);
DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA1);
DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA0);
DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA1);
DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA0);
DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA1);
DUMP_REG(HDMI_NV_PDISP_SOR_TRIG);
DUMP_REG(HDMI_NV_PDISP_SOR_MSCHECK);
DUMP_REG(HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG0);
DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG1);
DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG2);
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(0));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(1));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(2));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(3));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(4));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(5));
DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(6));
DUMP_REG(HDMI_NV_PDISP_AUDIO_PULSE_WIDTH);
DUMP_REG(HDMI_NV_PDISP_AUDIO_THRESHOLD);
DUMP_REG(HDMI_NV_PDISP_AUDIO_CNTRL0);
DUMP_REG(HDMI_NV_PDISP_AUDIO_N);
DUMP_REG(HDMI_NV_PDISP_HDCPRIF_ROM_TIMING);
DUMP_REG(HDMI_NV_PDISP_SOR_REFCLK);
DUMP_REG(HDMI_NV_PDISP_CRC_CONTROL);
DUMP_REG(HDMI_NV_PDISP_INPUT_CONTROL);
DUMP_REG(HDMI_NV_PDISP_SCRATCH);
DUMP_REG(HDMI_NV_PDISP_PE_CURRENT);
DUMP_REG(HDMI_NV_PDISP_KEY_CTRL);
DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG0);
DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG1);
DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG2);
DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_0);
DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_1);
DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_2);
DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_3);
DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_TRIG);
DUMP_REG(HDMI_NV_PDISP_KEY_SKEY_INDEX);
DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
#undef DUMP_REG
clk_disable(hdmi->clk);
return 0;
}
static struct drm_info_list debugfs_files[] = {
{ "regs", tegra_hdmi_show_regs, 0, NULL },
};
static int tegra_hdmi_debugfs_init(struct tegra_hdmi *hdmi,
struct drm_minor *minor)
{
unsigned int i;
int err;
hdmi->debugfs = debugfs_create_dir("hdmi", minor->debugfs_root);
if (!hdmi->debugfs)
return -ENOMEM;
hdmi->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
GFP_KERNEL);
if (!hdmi->debugfs_files) {
err = -ENOMEM;
goto remove;
}
for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
hdmi->debugfs_files[i].data = hdmi;
err = drm_debugfs_create_files(hdmi->debugfs_files,
ARRAY_SIZE(debugfs_files),
hdmi->debugfs, minor);
if (err < 0)
goto free;
hdmi->minor = minor;
return 0;
free:
kfree(hdmi->debugfs_files);
hdmi->debugfs_files = NULL;
remove:
debugfs_remove(hdmi->debugfs);
hdmi->debugfs = NULL;
return err;
}
static int tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi)
{
drm_debugfs_remove_files(hdmi->debugfs_files, ARRAY_SIZE(debugfs_files),
hdmi->minor);
hdmi->minor = NULL;
kfree(hdmi->debugfs_files);
hdmi->debugfs_files = NULL;
debugfs_remove(hdmi->debugfs);
hdmi->debugfs = NULL;
return 0;
}
static int tegra_hdmi_drm_init(struct host1x_client *client,
struct drm_device *drm)
{
struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
int err;
hdmi->output.type = TEGRA_OUTPUT_HDMI;
hdmi->output.dev = client->dev;
hdmi->output.ops = &hdmi_ops;
err = tegra_output_init(drm, &hdmi->output);
if (err < 0) {
dev_err(client->dev, "output setup failed: %d\n", err);
return err;
}
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
err = tegra_hdmi_debugfs_init(hdmi, drm->primary);
if (err < 0)
dev_err(client->dev, "debugfs setup failed: %d\n", err);
}
return 0;
}
static int tegra_hdmi_drm_exit(struct host1x_client *client)
{
struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
int err;
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
err = tegra_hdmi_debugfs_exit(hdmi);
if (err < 0)
dev_err(client->dev, "debugfs cleanup failed: %d\n",
err);
}
err = tegra_output_disable(&hdmi->output);
if (err < 0) {
dev_err(client->dev, "output failed to disable: %d\n", err);
return err;
}
err = tegra_output_exit(&hdmi->output);
if (err < 0) {
dev_err(client->dev, "output cleanup failed: %d\n", err);
return err;
}
return 0;
}
static const struct host1x_client_ops hdmi_client_ops = {
.drm_init = tegra_hdmi_drm_init,
.drm_exit = tegra_hdmi_drm_exit,
};
static int tegra_hdmi_probe(struct platform_device *pdev)
{
struct host1x_drm *host1x = host1x_get_drm_data(pdev->dev.parent);
struct tegra_hdmi *hdmi;
struct resource *regs;
int err;
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
hdmi->dev = &pdev->dev;
hdmi->audio_source = AUTO;
hdmi->audio_freq = 44100;
hdmi->stereo = false;
hdmi->dvi = false;
hdmi->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(hdmi->clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(hdmi->clk);
}
err = clk_prepare(hdmi->clk);
if (err < 0)
return err;
hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent");
if (IS_ERR(hdmi->clk_parent))
return PTR_ERR(hdmi->clk_parent);
err = clk_prepare(hdmi->clk_parent);
if (err < 0)
return err;
err = clk_set_parent(hdmi->clk, hdmi->clk_parent);
if (err < 0) {
dev_err(&pdev->dev, "failed to setup clocks: %d\n", err);
return err;
}
hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd");
if (IS_ERR(hdmi->vdd)) {
dev_err(&pdev->dev, "failed to get VDD regulator\n");
return PTR_ERR(hdmi->vdd);
}
hdmi->pll = devm_regulator_get(&pdev->dev, "pll");
if (IS_ERR(hdmi->pll)) {
dev_err(&pdev->dev, "failed to get PLL regulator\n");
return PTR_ERR(hdmi->pll);
}
hdmi->output.dev = &pdev->dev;
err = tegra_output_parse_dt(&hdmi->output);
if (err < 0)
return err;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs)
return -ENXIO;
hdmi->regs = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(hdmi->regs))
return PTR_ERR(hdmi->regs);
err = platform_get_irq(pdev, 0);
if (err < 0)
return err;
hdmi->irq = err;
hdmi->client.ops = &hdmi_client_ops;
INIT_LIST_HEAD(&hdmi->client.list);
hdmi->client.dev = &pdev->dev;
err = host1x_register_client(host1x, &hdmi->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to register host1x client: %d\n",
err);
return err;
}
platform_set_drvdata(pdev, hdmi);
return 0;
}
static int tegra_hdmi_remove(struct platform_device *pdev)
{
struct host1x_drm *host1x = host1x_get_drm_data(pdev->dev.parent);
struct tegra_hdmi *hdmi = platform_get_drvdata(pdev);
int err;
err = host1x_unregister_client(host1x, &hdmi->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
err);
return err;
}
clk_unprepare(hdmi->clk_parent);
clk_unprepare(hdmi->clk);
return 0;
}
static struct of_device_id tegra_hdmi_of_match[] = {
{ .compatible = "nvidia,tegra30-hdmi", },
{ .compatible = "nvidia,tegra20-hdmi", },
{ },
};
struct platform_driver tegra_hdmi_driver = {
.driver = {
.name = "tegra-hdmi",
.owner = THIS_MODULE,
.of_match_table = tegra_hdmi_of_match,
},
.probe = tegra_hdmi_probe,
.remove = tegra_hdmi_remove,
};
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