Commit 9c8af882 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Laurent Pinchart

drm: Add adv7511 encoder driver

This patch adds a driver for the Analog Devices adv7511. The adv7511 is
a standalone HDMI transmitter chip. It features a HDMI output interface
on one end and video and audio input interfaces on the other.
Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
parent 53d7437a
menu "I2C encoder or helper chips"
depends on DRM && DRM_KMS_HELPER && I2C
config DRM_I2C_ADV7511
tristate "AV7511 encoder"
select REGMAP_I2C
help
Support for the Analog Device ADV7511(W) and ADV7513 HDMI encoders.
config DRM_I2C_CH7006
tristate "Chrontel ch7006 TV encoder"
default m if DRM_NOUVEAU
......
ccflags-y := -Iinclude/drm
obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511.o
ch7006-y := ch7006_drv.o ch7006_mode.o
obj-$(CONFIG_DRM_I2C_CH7006) += ch7006.o
......
/*
* Analog Devices ADV7511 HDMI transmitter driver
*
* Copyright 2012 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_encoder_slave.h>
#include "adv7511.h"
struct adv7511 {
struct i2c_client *i2c_main;
struct i2c_client *i2c_edid;
struct regmap *regmap;
struct regmap *packet_memory_regmap;
enum drm_connector_status status;
int dpms_mode;
unsigned int f_tmds;
unsigned int current_edid_segment;
uint8_t edid_buf[256];
wait_queue_head_t wq;
struct drm_encoder *encoder;
bool embedded_sync;
enum adv7511_sync_polarity vsync_polarity;
enum adv7511_sync_polarity hsync_polarity;
bool rgb;
struct edid *edid;
struct gpio_desc *gpio_pd;
};
static struct adv7511 *encoder_to_adv7511(struct drm_encoder *encoder)
{
return to_encoder_slave(encoder)->slave_priv;
}
/* ADI recommended values for proper operation. */
static const struct reg_default adv7511_fixed_registers[] = {
{ 0x98, 0x03 },
{ 0x9a, 0xe0 },
{ 0x9c, 0x30 },
{ 0x9d, 0x61 },
{ 0xa2, 0xa4 },
{ 0xa3, 0xa4 },
{ 0xe0, 0xd0 },
{ 0xf9, 0x00 },
{ 0x55, 0x02 },
};
/* -----------------------------------------------------------------------------
* Register access
*/
static const uint8_t adv7511_register_defaults[] = {
0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */
0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13,
0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */
0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84,
0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */
0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */
0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0,
0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */
0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */
0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00,
0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */
0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */
0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04,
0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01,
0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */
0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static bool adv7511_register_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case ADV7511_REG_CHIP_REVISION:
case ADV7511_REG_SPDIF_FREQ:
case ADV7511_REG_CTS_AUTOMATIC1:
case ADV7511_REG_CTS_AUTOMATIC2:
case ADV7511_REG_VIC_DETECTED:
case ADV7511_REG_VIC_SEND:
case ADV7511_REG_AUX_VIC_DETECTED:
case ADV7511_REG_STATUS:
case ADV7511_REG_GC(1):
case ADV7511_REG_INT(0):
case ADV7511_REG_INT(1):
case ADV7511_REG_PLL_STATUS:
case ADV7511_REG_AN(0):
case ADV7511_REG_AN(1):
case ADV7511_REG_AN(2):
case ADV7511_REG_AN(3):
case ADV7511_REG_AN(4):
case ADV7511_REG_AN(5):
case ADV7511_REG_AN(6):
case ADV7511_REG_AN(7):
case ADV7511_REG_HDCP_STATUS:
case ADV7511_REG_BCAPS:
case ADV7511_REG_BKSV(0):
case ADV7511_REG_BKSV(1):
case ADV7511_REG_BKSV(2):
case ADV7511_REG_BKSV(3):
case ADV7511_REG_BKSV(4):
case ADV7511_REG_DDC_STATUS:
case ADV7511_REG_BSTATUS(0):
case ADV7511_REG_BSTATUS(1):
case ADV7511_REG_CHIP_ID_HIGH:
case ADV7511_REG_CHIP_ID_LOW:
return true;
}
return false;
}
static const struct regmap_config adv7511_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xff,
.cache_type = REGCACHE_RBTREE,
.reg_defaults_raw = adv7511_register_defaults,
.num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults),
.volatile_reg = adv7511_register_volatile,
};
/* -----------------------------------------------------------------------------
* Hardware configuration
*/
static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable,
const uint16_t *coeff,
unsigned int scaling_factor)
{
unsigned int i;
regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE);
if (enable) {
for (i = 0; i < 12; ++i) {
regmap_update_bits(adv7511->regmap,
ADV7511_REG_CSC_UPPER(i),
0x1f, coeff[i] >> 8);
regmap_write(adv7511->regmap,
ADV7511_REG_CSC_LOWER(i),
coeff[i] & 0xff);
}
}
if (enable)
regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
0xe0, 0x80 | (scaling_factor << 5));
else
regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
0x80, 0x00);
regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
ADV7511_CSC_UPDATE_MODE, 0);
}
static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet)
{
if (packet & 0xff)
regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
packet, 0xff);
if (packet & 0xff00) {
packet >>= 8;
regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
packet, 0xff);
}
return 0;
}
static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet)
{
if (packet & 0xff)
regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
packet, 0x00);
if (packet & 0xff00) {
packet >>= 8;
regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
packet, 0x00);
}
return 0;
}
/* Coefficients for adv7511 color space conversion */
static const uint16_t adv7511_csc_ycbcr_to_rgb[] = {
0x0734, 0x04ad, 0x0000, 0x1c1b,
0x1ddc, 0x04ad, 0x1f24, 0x0135,
0x0000, 0x04ad, 0x087c, 0x1b77,
};
static void adv7511_set_config_csc(struct adv7511 *adv7511,
struct drm_connector *connector,
bool rgb)
{
struct adv7511_video_config config;
bool output_format_422, output_format_ycbcr;
unsigned int mode;
uint8_t infoframe[17];
if (adv7511->edid)
config.hdmi_mode = drm_detect_hdmi_monitor(adv7511->edid);
else
config.hdmi_mode = false;
hdmi_avi_infoframe_init(&config.avi_infoframe);
config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN;
if (rgb) {
config.csc_enable = false;
config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
} else {
config.csc_scaling_factor = ADV7511_CSC_SCALING_4;
config.csc_coefficents = adv7511_csc_ycbcr_to_rgb;
if ((connector->display_info.color_formats &
DRM_COLOR_FORMAT_YCRCB422) &&
config.hdmi_mode) {
config.csc_enable = false;
config.avi_infoframe.colorspace =
HDMI_COLORSPACE_YUV422;
} else {
config.csc_enable = true;
config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
}
}
if (config.hdmi_mode) {
mode = ADV7511_HDMI_CFG_MODE_HDMI;
switch (config.avi_infoframe.colorspace) {
case HDMI_COLORSPACE_YUV444:
output_format_422 = false;
output_format_ycbcr = true;
break;
case HDMI_COLORSPACE_YUV422:
output_format_422 = true;
output_format_ycbcr = true;
break;
default:
output_format_422 = false;
output_format_ycbcr = false;
break;
}
} else {
mode = ADV7511_HDMI_CFG_MODE_DVI;
output_format_422 = false;
output_format_ycbcr = false;
}
adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
adv7511_set_colormap(adv7511, config.csc_enable,
config.csc_coefficents,
config.csc_scaling_factor);
regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81,
(output_format_422 << 7) | output_format_ycbcr);
regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG,
ADV7511_HDMI_CFG_MODE_MASK, mode);
hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe,
sizeof(infoframe));
/* The AVI infoframe id is not configurable */
regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION,
infoframe + 1, sizeof(infoframe) - 1);
adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
}
static void adv7511_set_link_config(struct adv7511 *adv7511,
const struct adv7511_link_config *config)
{
/*
* The input style values documented in the datasheet don't match the
* hardware register field values :-(
*/
static const unsigned int input_styles[4] = { 0, 2, 1, 3 };
unsigned int clock_delay;
unsigned int color_depth;
unsigned int input_id;
clock_delay = (config->clock_delay + 1200) / 400;
color_depth = config->input_color_depth == 8 ? 3
: (config->input_color_depth == 10 ? 1 : 2);
/* TODO Support input ID 6 */
if (config->input_colorspace != HDMI_COLORSPACE_YUV422)
input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR
? 5 : 0;
else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR)
input_id = config->embedded_sync ? 8 : 7;
else if (config->input_clock == ADV7511_INPUT_CLOCK_2X)
input_id = config->embedded_sync ? 4 : 3;
else
input_id = config->embedded_sync ? 2 : 1;
regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf,
input_id);
regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e,
(color_depth << 4) |
(input_styles[config->input_style] << 2));
regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2,
config->input_justification << 3);
regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ,
config->sync_pulse << 2);
regmap_write(adv7511->regmap, 0xba, clock_delay << 5);
adv7511->embedded_sync = config->embedded_sync;
adv7511->hsync_polarity = config->hsync_polarity;
adv7511->vsync_polarity = config->vsync_polarity;
adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB;
}
/* -----------------------------------------------------------------------------
* Interrupt and hotplug detection
*/
static bool adv7511_hpd(struct adv7511 *adv7511)
{
unsigned int irq0;
int ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
if (ret < 0)
return false;
if (irq0 & ADV7511_INT0_HDP) {
regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
ADV7511_INT0_HDP);
return true;
}
return false;
}
static irqreturn_t adv7511_irq_handler(int irq, void *devid)
{
struct adv7511 *adv7511 = devid;
if (adv7511_hpd(adv7511))
drm_helper_hpd_irq_event(adv7511->encoder->dev);
wake_up_all(&adv7511->wq);
return IRQ_HANDLED;
}
static unsigned int adv7511_is_interrupt_pending(struct adv7511 *adv7511,
unsigned int irq)
{
unsigned int irq0, irq1;
unsigned int pending;
int ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
if (ret < 0)
return 0;
ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
if (ret < 0)
return 0;
pending = (irq1 << 8) | irq0;
return pending & irq;
}
static int adv7511_wait_for_interrupt(struct adv7511 *adv7511, int irq,
int timeout)
{
unsigned int pending;
int ret;
if (adv7511->i2c_main->irq) {
ret = wait_event_interruptible_timeout(adv7511->wq,
adv7511_is_interrupt_pending(adv7511, irq),
msecs_to_jiffies(timeout));
if (ret <= 0)
return 0;
pending = adv7511_is_interrupt_pending(adv7511, irq);
} else {
if (timeout < 25)
timeout = 25;
do {
pending = adv7511_is_interrupt_pending(adv7511, irq);
if (pending)
break;
msleep(25);
timeout -= 25;
} while (timeout >= 25);
}
return pending;
}
/* -----------------------------------------------------------------------------
* EDID retrieval
*/
static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
size_t len)
{
struct adv7511 *adv7511 = data;
struct i2c_msg xfer[2];
uint8_t offset;
unsigned int i;
int ret;
if (len > 128)
return -EINVAL;
if (adv7511->current_edid_segment != block / 2) {
unsigned int status;
ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
&status);
if (ret < 0)
return ret;
if (status != 2) {
regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
block);
ret = adv7511_wait_for_interrupt(adv7511,
ADV7511_INT0_EDID_READY |
ADV7511_INT1_DDC_ERROR, 200);
if (!(ret & ADV7511_INT0_EDID_READY))
return -EIO;
}
regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
ADV7511_INT0_EDID_READY | ADV7511_INT1_DDC_ERROR);
/* Break this apart, hopefully more I2C controllers will
* support 64 byte transfers than 256 byte transfers
*/
xfer[0].addr = adv7511->i2c_edid->addr;
xfer[0].flags = 0;
xfer[0].len = 1;
xfer[0].buf = &offset;
xfer[1].addr = adv7511->i2c_edid->addr;
xfer[1].flags = I2C_M_RD;
xfer[1].len = 64;
xfer[1].buf = adv7511->edid_buf;
offset = 0;
for (i = 0; i < 4; ++i) {
ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
ARRAY_SIZE(xfer));
if (ret < 0)
return ret;
else if (ret != 2)
return -EIO;
xfer[1].buf += 64;
offset += 64;
}
adv7511->current_edid_segment = block / 2;
}
if (block % 2 == 0)
memcpy(buf, adv7511->edid_buf, len);
else
memcpy(buf, adv7511->edid_buf + 128, len);
return 0;
}
/* -----------------------------------------------------------------------------
* Encoder operations
*/
static int adv7511_get_modes(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct adv7511 *adv7511 = encoder_to_adv7511(encoder);
struct edid *edid;
unsigned int count;
/* Reading the EDID only works if the device is powered */
if (adv7511->dpms_mode != DRM_MODE_DPMS_ON) {
regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
ADV7511_INT0_EDID_READY | ADV7511_INT1_DDC_ERROR);
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN, 0);
adv7511->current_edid_segment = -1;
}
edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
if (adv7511->dpms_mode != DRM_MODE_DPMS_ON)
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN,
ADV7511_POWER_POWER_DOWN);
kfree(adv7511->edid);
adv7511->edid = edid;
if (!edid)
return 0;
drm_mode_connector_update_edid_property(connector, edid);
count = drm_add_edid_modes(connector, edid);
adv7511_set_config_csc(adv7511, connector, adv7511->rgb);
return count;
}
static void adv7511_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct adv7511 *adv7511 = encoder_to_adv7511(encoder);
switch (mode) {
case DRM_MODE_DPMS_ON:
adv7511->current_edid_segment = -1;
regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
ADV7511_INT0_EDID_READY | ADV7511_INT1_DDC_ERROR);
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN, 0);
/*
* Per spec it is allowed to pulse the HDP signal to indicate
* that the EDID information has changed. Some monitors do this
* when they wakeup from standby or are enabled. When the HDP
* goes low the adv7511 is reset and the outputs are disabled
* which might cause the monitor to go to standby again. To
* avoid this we ignore the HDP pin for the first few seconds
* after enabeling the output.
*/
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7511_REG_POWER2_HDP_SRC_MASK,
ADV7511_REG_POWER2_HDP_SRC_NONE);
/* Most of the registers are reset during power down or
* when HPD is low
*/
regcache_sync(adv7511->regmap);
break;
default:
/* TODO: setup additional power down modes */
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN,
ADV7511_POWER_POWER_DOWN);
regcache_mark_dirty(adv7511->regmap);
break;
}
adv7511->dpms_mode = mode;
}
static enum drm_connector_status
adv7511_encoder_detect(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct adv7511 *adv7511 = encoder_to_adv7511(encoder);
enum drm_connector_status status;
unsigned int val;
bool hpd;
int ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
if (ret < 0)
return connector_status_disconnected;
if (val & ADV7511_STATUS_HPD)
status = connector_status_connected;
else
status = connector_status_disconnected;
hpd = adv7511_hpd(adv7511);
/* The chip resets itself when the cable is disconnected, so in case
* there is a pending HPD interrupt and the cable is connected there was
* at least one transition from disconnected to connected and the chip
* has to be reinitialized. */
if (status == connector_status_connected && hpd &&
adv7511->dpms_mode == DRM_MODE_DPMS_ON) {
regcache_mark_dirty(adv7511->regmap);
adv7511_encoder_dpms(encoder, adv7511->dpms_mode);
adv7511_get_modes(encoder, connector);
if (adv7511->status == connector_status_connected)
status = connector_status_disconnected;
} else {
/* Renable HDP sensing */
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7511_REG_POWER2_HDP_SRC_MASK,
ADV7511_REG_POWER2_HDP_SRC_BOTH);
}
adv7511->status = status;
return status;
}
static int adv7511_encoder_mode_valid(struct drm_encoder *encoder,
struct drm_display_mode *mode)
{
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
return MODE_NO_INTERLACE;
return MODE_OK;
}
static void adv7511_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
struct adv7511 *adv7511 = encoder_to_adv7511(encoder);
unsigned int low_refresh_rate;
unsigned int hsync_polarity = 0;
unsigned int vsync_polarity = 0;
if (adv7511->embedded_sync) {
unsigned int hsync_offset, hsync_len;
unsigned int vsync_offset, vsync_len;
hsync_offset = adj_mode->crtc_hsync_start -
adj_mode->crtc_hdisplay;
vsync_offset = adj_mode->crtc_vsync_start -
adj_mode->crtc_vdisplay;
hsync_len = adj_mode->crtc_hsync_end -
adj_mode->crtc_hsync_start;
vsync_len = adj_mode->crtc_vsync_end -
adj_mode->crtc_vsync_start;
/* The hardware vsync generator has a off-by-one bug */
vsync_offset += 1;
regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
((hsync_offset >> 10) & 0x7) << 5);
regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
(hsync_offset >> 2) & 0xff);
regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
((hsync_offset & 0x3) << 6) |
((hsync_len >> 4) & 0x3f));
regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
((hsync_len & 0xf) << 4) |
((vsync_offset >> 6) & 0xf));
regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
((vsync_offset & 0x3f) << 2) |
((vsync_len >> 8) & 0x3));
regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
vsync_len & 0xff);
hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
} else {
enum adv7511_sync_polarity mode_hsync_polarity;
enum adv7511_sync_polarity mode_vsync_polarity;
/**
* If the input signal is always low or always high we want to
* invert or let it passthrough depending on the polarity of the
* current mode.
**/
if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
else
mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
else
mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
if (adv7511->hsync_polarity != mode_hsync_polarity &&
adv7511->hsync_polarity !=
ADV7511_SYNC_POLARITY_PASSTHROUGH)
hsync_polarity = 1;
if (adv7511->vsync_polarity != mode_vsync_polarity &&
adv7511->vsync_polarity !=
ADV7511_SYNC_POLARITY_PASSTHROUGH)
vsync_polarity = 1;
}
if (mode->vrefresh <= 24000)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
else if (mode->vrefresh <= 25000)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
else if (mode->vrefresh <= 30000)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
else
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
regmap_update_bits(adv7511->regmap, 0xfb,
0x6, low_refresh_rate << 1);
regmap_update_bits(adv7511->regmap, 0x17,
0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
/*
* TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
* supposed to give better results.
*/
adv7511->f_tmds = mode->clock;
}
static struct drm_encoder_slave_funcs adv7511_encoder_funcs = {
.dpms = adv7511_encoder_dpms,
.mode_valid = adv7511_encoder_mode_valid,
.mode_set = adv7511_encoder_mode_set,
.detect = adv7511_encoder_detect,
.get_modes = adv7511_get_modes,
};
/* -----------------------------------------------------------------------------
* Probe & remove
*/
static int adv7511_parse_dt(struct device_node *np,
struct adv7511_link_config *config)
{
const char *str;
int ret;
memset(config, 0, sizeof(*config));
of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
config->input_color_depth != 12)
return -EINVAL;
ret = of_property_read_string(np, "adi,input-colorspace", &str);
if (ret < 0)
return ret;
if (!strcmp(str, "rgb"))
config->input_colorspace = HDMI_COLORSPACE_RGB;
else if (!strcmp(str, "yuv422"))
config->input_colorspace = HDMI_COLORSPACE_YUV422;
else if (!strcmp(str, "yuv444"))
config->input_colorspace = HDMI_COLORSPACE_YUV444;
else
return -EINVAL;
ret = of_property_read_string(np, "adi,input-clock", &str);
if (ret < 0)
return ret;
if (!strcmp(str, "1x"))
config->input_clock = ADV7511_INPUT_CLOCK_1X;
else if (!strcmp(str, "2x"))
config->input_clock = ADV7511_INPUT_CLOCK_2X;
else if (!strcmp(str, "ddr"))
config->input_clock = ADV7511_INPUT_CLOCK_DDR;
else
return -EINVAL;
if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
config->input_clock != ADV7511_INPUT_CLOCK_1X) {
ret = of_property_read_u32(np, "adi,input-style",
&config->input_style);
if (ret)
return ret;
if (config->input_style < 1 || config->input_style > 3)
return -EINVAL;
ret = of_property_read_string(np, "adi,input-justification",
&str);
if (ret < 0)
return ret;
if (!strcmp(str, "left"))
config->input_justification =
ADV7511_INPUT_JUSTIFICATION_LEFT;
else if (!strcmp(str, "evenly"))
config->input_justification =
ADV7511_INPUT_JUSTIFICATION_EVENLY;
else if (!strcmp(str, "right"))
config->input_justification =
ADV7511_INPUT_JUSTIFICATION_RIGHT;
else
return -EINVAL;
} else {
config->input_style = 1;
config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
}
of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
if (config->clock_delay < -1200 || config->clock_delay > 1600)
return -EINVAL;
config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
/* Hardcode the sync pulse configurations for now. */
config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
return 0;
}
static const int edid_i2c_addr = 0x7e;
static const int packet_i2c_addr = 0x70;
static const int cec_i2c_addr = 0x78;
static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
{
struct adv7511_link_config link_config;
struct adv7511 *adv7511;
struct device *dev = &i2c->dev;
unsigned int val;
int ret;
if (!dev->of_node)
return -EINVAL;
adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
if (!adv7511)
return -ENOMEM;
adv7511->dpms_mode = DRM_MODE_DPMS_OFF;
adv7511->status = connector_status_disconnected;
ret = adv7511_parse_dt(dev->of_node, &link_config);
if (ret)
return ret;
/*
* The power down GPIO is optional. If present, toggle it from active to
* inactive to wake up the encoder.
*/
adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
if (IS_ERR(adv7511->gpio_pd))
return PTR_ERR(adv7511->gpio_pd);
if (adv7511->gpio_pd) {
mdelay(5);
gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
}
adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
if (IS_ERR(adv7511->regmap))
return PTR_ERR(adv7511->regmap);
ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
if (ret)
return ret;
dev_dbg(dev, "Rev. %d\n", val);
ret = regmap_register_patch(adv7511->regmap, adv7511_fixed_registers,
ARRAY_SIZE(adv7511_fixed_registers));
if (ret)
return ret;
regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr);
regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
packet_i2c_addr);
regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR, cec_i2c_addr);
adv7511_packet_disable(adv7511, 0xffff);
adv7511->i2c_main = i2c;
adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1);
if (!adv7511->i2c_edid)
return -ENOMEM;
if (i2c->irq) {
init_waitqueue_head(&adv7511->wq);
ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
adv7511_irq_handler,
IRQF_ONESHOT, dev_name(dev),
adv7511);
if (ret)
goto err_i2c_unregister_device;
}
/* CEC is unused for now */
regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL,
ADV7511_CEC_CTRL_POWER_DOWN);
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN, ADV7511_POWER_POWER_DOWN);
adv7511->current_edid_segment = -1;
i2c_set_clientdata(i2c, adv7511);
adv7511_set_link_config(adv7511, &link_config);
return 0;
err_i2c_unregister_device:
i2c_unregister_device(adv7511->i2c_edid);
return ret;
}
static int adv7511_remove(struct i2c_client *i2c)
{
struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
i2c_unregister_device(adv7511->i2c_edid);
kfree(adv7511->edid);
return 0;
}
static int adv7511_encoder_init(struct i2c_client *i2c, struct drm_device *dev,
struct drm_encoder_slave *encoder)
{
struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
encoder->slave_priv = adv7511;
encoder->slave_funcs = &adv7511_encoder_funcs;
adv7511->encoder = &encoder->base;
return 0;
}
static const struct i2c_device_id adv7511_i2c_ids[] = {
{ "adv7511", 0 },
{ "adv7511w", 0 },
{ "adv7513", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
static const struct of_device_id adv7511_of_ids[] = {
{ .compatible = "adi,adv7511", },
{ .compatible = "adi,adv7511w", },
{ .compatible = "adi,adv7513", },
{ }
};
MODULE_DEVICE_TABLE(of, adv7511_of_ids);
static struct drm_i2c_encoder_driver adv7511_driver = {
.i2c_driver = {
.driver = {
.name = "adv7511",
.of_match_table = adv7511_of_ids,
},
.id_table = adv7511_i2c_ids,
.probe = adv7511_probe,
.remove = adv7511_remove,
},
.encoder_init = adv7511_encoder_init,
};
static int __init adv7511_init(void)
{
return drm_i2c_encoder_register(THIS_MODULE, &adv7511_driver);
}
module_init(adv7511_init);
static void __exit adv7511_exit(void)
{
drm_i2c_encoder_unregister(&adv7511_driver);
}
module_exit(adv7511_exit);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
MODULE_LICENSE("GPL");
/*
* Analog Devices ADV7511 HDMI transmitter driver
*
* Copyright 2012 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#ifndef __DRM_I2C_ADV7511_H__
#define __DRM_I2C_ADV7511_H__
#include <linux/hdmi.h>
#define ADV7511_REG_CHIP_REVISION 0x00
#define ADV7511_REG_N0 0x01
#define ADV7511_REG_N1 0x02
#define ADV7511_REG_N2 0x03
#define ADV7511_REG_SPDIF_FREQ 0x04
#define ADV7511_REG_CTS_AUTOMATIC1 0x05
#define ADV7511_REG_CTS_AUTOMATIC2 0x06
#define ADV7511_REG_CTS_MANUAL0 0x07
#define ADV7511_REG_CTS_MANUAL1 0x08
#define ADV7511_REG_CTS_MANUAL2 0x09
#define ADV7511_REG_AUDIO_SOURCE 0x0a
#define ADV7511_REG_AUDIO_CONFIG 0x0b
#define ADV7511_REG_I2S_CONFIG 0x0c
#define ADV7511_REG_I2S_WIDTH 0x0d
#define ADV7511_REG_AUDIO_SUB_SRC0 0x0e
#define ADV7511_REG_AUDIO_SUB_SRC1 0x0f
#define ADV7511_REG_AUDIO_SUB_SRC2 0x10
#define ADV7511_REG_AUDIO_SUB_SRC3 0x11
#define ADV7511_REG_AUDIO_CFG1 0x12
#define ADV7511_REG_AUDIO_CFG2 0x13
#define ADV7511_REG_AUDIO_CFG3 0x14
#define ADV7511_REG_I2C_FREQ_ID_CFG 0x15
#define ADV7511_REG_VIDEO_INPUT_CFG1 0x16
#define ADV7511_REG_CSC_UPPER(x) (0x18 + (x) * 2)
#define ADV7511_REG_CSC_LOWER(x) (0x19 + (x) * 2)
#define ADV7511_REG_SYNC_DECODER(x) (0x30 + (x))
#define ADV7511_REG_DE_GENERATOR (0x35 + (x))
#define ADV7511_REG_PIXEL_REPETITION 0x3b
#define ADV7511_REG_VIC_MANUAL 0x3c
#define ADV7511_REG_VIC_SEND 0x3d
#define ADV7511_REG_VIC_DETECTED 0x3e
#define ADV7511_REG_AUX_VIC_DETECTED 0x3f
#define ADV7511_REG_PACKET_ENABLE0 0x40
#define ADV7511_REG_POWER 0x41
#define ADV7511_REG_STATUS 0x42
#define ADV7511_REG_EDID_I2C_ADDR 0x43
#define ADV7511_REG_PACKET_ENABLE1 0x44
#define ADV7511_REG_PACKET_I2C_ADDR 0x45
#define ADV7511_REG_DSD_ENABLE 0x46
#define ADV7511_REG_VIDEO_INPUT_CFG2 0x48
#define ADV7511_REG_INFOFRAME_UPDATE 0x4a
#define ADV7511_REG_GC(x) (0x4b + (x)) /* 0x4b - 0x51 */
#define ADV7511_REG_AVI_INFOFRAME_VERSION 0x52
#define ADV7511_REG_AVI_INFOFRAME_LENGTH 0x53
#define ADV7511_REG_AVI_INFOFRAME_CHECKSUM 0x54
#define ADV7511_REG_AVI_INFOFRAME(x) (0x55 + (x)) /* 0x55 - 0x6f */
#define ADV7511_REG_AUDIO_INFOFRAME_VERSION 0x70
#define ADV7511_REG_AUDIO_INFOFRAME_LENGTH 0x71
#define ADV7511_REG_AUDIO_INFOFRAME_CHECKSUM 0x72
#define ADV7511_REG_AUDIO_INFOFRAME(x) (0x73 + (x)) /* 0x73 - 0x7c */
#define ADV7511_REG_INT_ENABLE(x) (0x94 + (x))
#define ADV7511_REG_INT(x) (0x96 + (x))
#define ADV7511_REG_INPUT_CLK_DIV 0x9d
#define ADV7511_REG_PLL_STATUS 0x9e
#define ADV7511_REG_HDMI_POWER 0xa1
#define ADV7511_REG_HDCP_HDMI_CFG 0xaf
#define ADV7511_REG_AN(x) (0xb0 + (x)) /* 0xb0 - 0xb7 */
#define ADV7511_REG_HDCP_STATUS 0xb8
#define ADV7511_REG_BCAPS 0xbe
#define ADV7511_REG_BKSV(x) (0xc0 + (x)) /* 0xc0 - 0xc3 */
#define ADV7511_REG_EDID_SEGMENT 0xc4
#define ADV7511_REG_DDC_STATUS 0xc8
#define ADV7511_REG_EDID_READ_CTRL 0xc9
#define ADV7511_REG_BSTATUS(x) (0xca + (x)) /* 0xca - 0xcb */
#define ADV7511_REG_TIMING_GEN_SEQ 0xd0
#define ADV7511_REG_POWER2 0xd6
#define ADV7511_REG_HSYNC_PLACEMENT_MSB 0xfa
#define ADV7511_REG_SYNC_ADJUSTMENT(x) (0xd7 + (x)) /* 0xd7 - 0xdc */
#define ADV7511_REG_TMDS_CLOCK_INV 0xde
#define ADV7511_REG_ARC_CTRL 0xdf
#define ADV7511_REG_CEC_I2C_ADDR 0xe1
#define ADV7511_REG_CEC_CTRL 0xe2
#define ADV7511_REG_CHIP_ID_HIGH 0xf5
#define ADV7511_REG_CHIP_ID_LOW 0xf6
#define ADV7511_CSC_ENABLE BIT(7)
#define ADV7511_CSC_UPDATE_MODE BIT(5)
#define ADV7511_INT0_HDP BIT(7)
#define ADV7511_INT0_VSYNC BIT(5)
#define ADV7511_INT0_AUDIO_FIFO_FULL BIT(4)
#define ADV7511_INT0_EDID_READY BIT(2)
#define ADV7511_INT0_HDCP_AUTHENTICATED BIT(1)
#define ADV7511_INT1_DDC_ERROR BIT(7)
#define ADV7511_INT1_BKSV BIT(6)
#define ADV7511_INT1_CEC_TX_READY BIT(5)
#define ADV7511_INT1_CEC_TX_ARBIT_LOST BIT(4)
#define ADV7511_INT1_CEC_TX_RETRY_TIMEOUT BIT(3)
#define ADV7511_INT1_CEC_RX_READY3 BIT(2)
#define ADV7511_INT1_CEC_RX_READY2 BIT(1)
#define ADV7511_INT1_CEC_RX_READY1 BIT(0)
#define ADV7511_ARC_CTRL_POWER_DOWN BIT(0)
#define ADV7511_CEC_CTRL_POWER_DOWN BIT(0)
#define ADV7511_POWER_POWER_DOWN BIT(6)
#define ADV7511_HDMI_CFG_MODE_MASK 0x2
#define ADV7511_HDMI_CFG_MODE_DVI 0x0
#define ADV7511_HDMI_CFG_MODE_HDMI 0x2
#define ADV7511_AUDIO_SELECT_I2C 0x0
#define ADV7511_AUDIO_SELECT_SPDIF 0x1
#define ADV7511_AUDIO_SELECT_DSD 0x2
#define ADV7511_AUDIO_SELECT_HBR 0x3
#define ADV7511_AUDIO_SELECT_DST 0x4
#define ADV7511_I2S_SAMPLE_LEN_16 0x2
#define ADV7511_I2S_SAMPLE_LEN_20 0x3
#define ADV7511_I2S_SAMPLE_LEN_18 0x4
#define ADV7511_I2S_SAMPLE_LEN_22 0x5
#define ADV7511_I2S_SAMPLE_LEN_19 0x8
#define ADV7511_I2S_SAMPLE_LEN_23 0x9
#define ADV7511_I2S_SAMPLE_LEN_24 0xb
#define ADV7511_I2S_SAMPLE_LEN_17 0xc
#define ADV7511_I2S_SAMPLE_LEN_21 0xd
#define ADV7511_SAMPLE_FREQ_44100 0x0
#define ADV7511_SAMPLE_FREQ_48000 0x2
#define ADV7511_SAMPLE_FREQ_32000 0x3
#define ADV7511_SAMPLE_FREQ_88200 0x8
#define ADV7511_SAMPLE_FREQ_96000 0xa
#define ADV7511_SAMPLE_FREQ_176400 0xc
#define ADV7511_SAMPLE_FREQ_192000 0xe
#define ADV7511_STATUS_POWER_DOWN_POLARITY BIT(7)
#define ADV7511_STATUS_HPD BIT(6)
#define ADV7511_STATUS_MONITOR_SENSE BIT(5)
#define ADV7511_STATUS_I2S_32BIT_MODE BIT(3)
#define ADV7511_PACKET_ENABLE_N_CTS BIT(8+6)
#define ADV7511_PACKET_ENABLE_AUDIO_SAMPLE BIT(8+5)
#define ADV7511_PACKET_ENABLE_AVI_INFOFRAME BIT(8+4)
#define ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME BIT(8+3)
#define ADV7511_PACKET_ENABLE_GC BIT(7)
#define ADV7511_PACKET_ENABLE_SPD BIT(6)
#define ADV7511_PACKET_ENABLE_MPEG BIT(5)
#define ADV7511_PACKET_ENABLE_ACP BIT(4)
#define ADV7511_PACKET_ENABLE_ISRC BIT(3)
#define ADV7511_PACKET_ENABLE_GM BIT(2)
#define ADV7511_PACKET_ENABLE_SPARE2 BIT(1)
#define ADV7511_PACKET_ENABLE_SPARE1 BIT(0)
#define ADV7511_REG_POWER2_HDP_SRC_MASK 0xc0
#define ADV7511_REG_POWER2_HDP_SRC_BOTH 0x00
#define ADV7511_REG_POWER2_HDP_SRC_HDP 0x40
#define ADV7511_REG_POWER2_HDP_SRC_CEC 0x80
#define ADV7511_REG_POWER2_HDP_SRC_NONE 0xc0
#define ADV7511_REG_POWER2_TDMS_ENABLE BIT(4)
#define ADV7511_REG_POWER2_GATE_INPUT_CLK BIT(0)
#define ADV7511_LOW_REFRESH_RATE_NONE 0x0
#define ADV7511_LOW_REFRESH_RATE_24HZ 0x1
#define ADV7511_LOW_REFRESH_RATE_25HZ 0x2
#define ADV7511_LOW_REFRESH_RATE_30HZ 0x3
#define ADV7511_AUDIO_CFG3_LEN_MASK 0x0f
#define ADV7511_I2C_FREQ_ID_CFG_RATE_MASK 0xf0
#define ADV7511_AUDIO_SOURCE_I2S 0
#define ADV7511_AUDIO_SOURCE_SPDIF 1
#define ADV7511_I2S_FORMAT_I2S 0
#define ADV7511_I2S_FORMAT_RIGHT_J 1
#define ADV7511_I2S_FORMAT_LEFT_J 2
#define ADV7511_PACKET(p, x) ((p) * 0x20 + (x))
#define ADV7511_PACKET_SDP(x) ADV7511_PACKET(0, x)
#define ADV7511_PACKET_MPEG(x) ADV7511_PACKET(1, x)
#define ADV7511_PACKET_ACP(x) ADV7511_PACKET(2, x)
#define ADV7511_PACKET_ISRC1(x) ADV7511_PACKET(3, x)
#define ADV7511_PACKET_ISRC2(x) ADV7511_PACKET(4, x)
#define ADV7511_PACKET_GM(x) ADV7511_PACKET(5, x)
#define ADV7511_PACKET_SPARE(x) ADV7511_PACKET(6, x)
enum adv7511_input_clock {
ADV7511_INPUT_CLOCK_1X,
ADV7511_INPUT_CLOCK_2X,
ADV7511_INPUT_CLOCK_DDR,
};
enum adv7511_input_justification {
ADV7511_INPUT_JUSTIFICATION_EVENLY = 0,
ADV7511_INPUT_JUSTIFICATION_RIGHT = 1,
ADV7511_INPUT_JUSTIFICATION_LEFT = 2,
};
enum adv7511_input_sync_pulse {
ADV7511_INPUT_SYNC_PULSE_DE = 0,
ADV7511_INPUT_SYNC_PULSE_HSYNC = 1,
ADV7511_INPUT_SYNC_PULSE_VSYNC = 2,
ADV7511_INPUT_SYNC_PULSE_NONE = 3,
};
/**
* enum adv7511_sync_polarity - Polarity for the input sync signals
* @ADV7511_SYNC_POLARITY_PASSTHROUGH: Sync polarity matches that of
* the currently configured mode.
* @ADV7511_SYNC_POLARITY_LOW: Sync polarity is low
* @ADV7511_SYNC_POLARITY_HIGH: Sync polarity is high
*
* If the polarity is set to either LOW or HIGH the driver will configure the
* ADV7511 to internally invert the sync signal if required to match the sync
* polarity setting for the currently selected output mode.
*
* If the polarity is set to PASSTHROUGH, the ADV7511 will route the signal
* unchanged. This is used when the upstream graphics core already generates
* the sync signals with the correct polarity.
*/
enum adv7511_sync_polarity {
ADV7511_SYNC_POLARITY_PASSTHROUGH,
ADV7511_SYNC_POLARITY_LOW,
ADV7511_SYNC_POLARITY_HIGH,
};
/**
* struct adv7511_link_config - Describes adv7511 hardware configuration
* @input_color_depth: Number of bits per color component (8, 10 or 12)
* @input_colorspace: The input colorspace (RGB, YUV444, YUV422)
* @input_clock: The input video clock style (1x, 2x, DDR)
* @input_style: The input component arrangement variant
* @input_justification: Video input format bit justification
* @clock_delay: Clock delay for the input clock (in ps)
* @embedded_sync: Video input uses BT.656-style embedded sync
* @sync_pulse: Select the sync pulse
* @vsync_polarity: vsync input signal configuration
* @hsync_polarity: hsync input signal configuration
*/
struct adv7511_link_config {
unsigned int input_color_depth;
enum hdmi_colorspace input_colorspace;
enum adv7511_input_clock input_clock;
unsigned int input_style;
enum adv7511_input_justification input_justification;
int clock_delay;
bool embedded_sync;
enum adv7511_input_sync_pulse sync_pulse;
enum adv7511_sync_polarity vsync_polarity;
enum adv7511_sync_polarity hsync_polarity;
};
/**
* enum adv7511_csc_scaling - Scaling factor for the ADV7511 CSC
* @ADV7511_CSC_SCALING_1: CSC results are not scaled
* @ADV7511_CSC_SCALING_2: CSC results are scaled by a factor of two
* @ADV7511_CSC_SCALING_4: CSC results are scalled by a factor of four
*/
enum adv7511_csc_scaling {
ADV7511_CSC_SCALING_1 = 0,
ADV7511_CSC_SCALING_2 = 1,
ADV7511_CSC_SCALING_4 = 2,
};
/**
* struct adv7511_video_config - Describes adv7511 hardware configuration
* @csc_enable: Whether to enable color space conversion
* @csc_scaling_factor: Color space conversion scaling factor
* @csc_coefficents: Color space conversion coefficents
* @hdmi_mode: Whether to use HDMI or DVI output mode
* @avi_infoframe: HDMI infoframe
*/
struct adv7511_video_config {
bool csc_enable;
enum adv7511_csc_scaling csc_scaling_factor;
const uint16_t *csc_coefficents;
bool hdmi_mode;
struct hdmi_avi_infoframe avi_infoframe;
};
#endif /* __DRM_I2C_ADV7511_H__ */
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment