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adv7511_drv.c
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adv7511_drv.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Analog Devices ADV7511 HDMI transmitter driver
*
* Copyright 2012 Analog Devices Inc.
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/slab.h>
#include <media/cec.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "adv7511.h"
/* ADI recommended values for proper operation. */
static const struct reg_sequence 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_EDID_READ_CTRL:
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, bool hdmi_mode)
{
struct adv7511_video_config config;
bool output_format_422, output_format_ycbcr;
unsigned int mode;
uint8_t infoframe[17];
config.hdmi_mode = hdmi_mode;
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_YCBCR422) &&
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;
}
static void __adv7511_power_on(struct adv7511 *adv7511)
{
adv7511->current_edid_segment = -1;
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN, 0);
if (adv7511->i2c_main->irq) {
/*
* Documentation says the INT_ENABLE registers are reset in
* POWER_DOWN mode. My 7511w preserved the bits, however.
* Still, let's be safe and stick to the documentation.
*/
regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0),
ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD);
regmap_update_bits(adv7511->regmap,
ADV7511_REG_INT_ENABLE(1),
ADV7511_INT1_DDC_ERROR,
ADV7511_INT1_DDC_ERROR);
}
/*
* Per spec it is allowed to pulse the HPD signal to indicate that the
* EDID information has changed. Some monitors do this when they wakeup
* from standby or are enabled. When the HPD 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 HPD pin for the
* first few seconds after enabling the output. On the other hand
* adv7535 require to enable HPD Override bit for proper HPD.
*/
if (adv7511->type == ADV7535)
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7535_REG_POWER2_HPD_OVERRIDE,
ADV7535_REG_POWER2_HPD_OVERRIDE);
else
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7511_REG_POWER2_HPD_SRC_MASK,
ADV7511_REG_POWER2_HPD_SRC_NONE);
}
static void adv7511_power_on(struct adv7511 *adv7511)
{
__adv7511_power_on(adv7511);
/*
* Most of the registers are reset during power down or when HPD is low.
*/
regcache_sync(adv7511->regmap);
if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
adv7533_dsi_power_on(adv7511);
adv7511->powered = true;
}
static void __adv7511_power_off(struct adv7511 *adv7511)
{
/* TODO: setup additional power down modes */
if (adv7511->type == ADV7535)
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7535_REG_POWER2_HPD_OVERRIDE, 0);
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
ADV7511_POWER_POWER_DOWN,
ADV7511_POWER_POWER_DOWN);
regmap_update_bits(adv7511->regmap,
ADV7511_REG_INT_ENABLE(1),
ADV7511_INT1_DDC_ERROR, 0);
regcache_mark_dirty(adv7511->regmap);
}
static void adv7511_power_off(struct adv7511 *adv7511)
{
__adv7511_power_off(adv7511);
if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
adv7533_dsi_power_off(adv7511);
adv7511->powered = false;
}
/* -----------------------------------------------------------------------------
* 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_HPD) {
regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
ADV7511_INT0_HPD);
return true;
}
return false;
}
static void adv7511_hpd_work(struct work_struct *work)
{
struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
enum drm_connector_status status;
unsigned int val;
int ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
if (ret < 0)
status = connector_status_disconnected;
else if (val & ADV7511_STATUS_HPD)
status = connector_status_connected;
else
status = connector_status_disconnected;
/*
* The bridge resets its registers on unplug. So when we get a plug
* event and we're already supposed to be powered, cycle the bridge to
* restore its state.
*/
if (status == connector_status_connected &&
adv7511->connector.status == connector_status_disconnected &&
adv7511->powered) {
regcache_mark_dirty(adv7511->regmap);
adv7511_power_on(adv7511);
}
if (adv7511->connector.status != status) {
adv7511->connector.status = status;
if (adv7511->connector.dev) {
if (status == connector_status_disconnected)
cec_phys_addr_invalidate(adv7511->cec_adap);
drm_kms_helper_hotplug_event(adv7511->connector.dev);
} else {
drm_bridge_hpd_notify(&adv7511->bridge, status);
}
}
}
static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
{
unsigned int irq0, irq1;
int ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
if (ret < 0)
return ret;
ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
if (ret < 0)
return ret;
regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
schedule_work(&adv7511->hpd_work);
if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
adv7511->edid_read = true;
if (adv7511->i2c_main->irq)
wake_up_all(&adv7511->wq);
}
#ifdef CONFIG_DRM_I2C_ADV7511_CEC
adv7511_cec_irq_process(adv7511, irq1);
#endif
return 0;
}
static irqreturn_t adv7511_irq_handler(int irq, void *devid)
{
struct adv7511 *adv7511 = devid;
int ret;
ret = adv7511_irq_process(adv7511, true);
return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
}
/* -----------------------------------------------------------------------------
* EDID retrieval
*/
static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
{
int ret;
if (adv7511->i2c_main->irq) {
ret = wait_event_interruptible_timeout(adv7511->wq,
adv7511->edid_read, msecs_to_jiffies(timeout));
} else {
for (; timeout > 0; timeout -= 25) {
ret = adv7511_irq_process(adv7511, false);
if (ret < 0)
break;
if (adv7511->edid_read)
break;
msleep(25);
}
}
return adv7511->edid_read ? 0 : -EIO;
}
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) {
adv7511->edid_read = false;
regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
block);
ret = adv7511_wait_for_edid(adv7511, 200);
if (ret < 0)
return ret;
}
/* 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;
}
/* -----------------------------------------------------------------------------
* ADV75xx helpers
*/
static struct edid *adv7511_get_edid(struct adv7511 *adv7511,
struct drm_connector *connector)
{
struct edid *edid;
/* Reading the EDID only works if the device is powered */
if (!adv7511->powered) {
unsigned int edid_i2c_addr =
(adv7511->i2c_edid->addr << 1);
__adv7511_power_on(adv7511);
/* Reset the EDID_I2C_ADDR register as it might be cleared */
regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
edid_i2c_addr);
}
edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
if (!adv7511->powered)
__adv7511_power_off(adv7511);
adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
drm_detect_hdmi_monitor(edid));
cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
return edid;
}
static int adv7511_get_modes(struct adv7511 *adv7511,
struct drm_connector *connector)
{
struct edid *edid;
unsigned int count;
edid = adv7511_get_edid(adv7511, connector);
drm_connector_update_edid_property(connector, edid);
count = drm_add_edid_modes(connector, edid);
kfree(edid);
return count;
}
static enum drm_connector_status
adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
{
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->powered) {
regcache_mark_dirty(adv7511->regmap);
adv7511_power_on(adv7511);
if (connector)
adv7511_get_modes(adv7511, connector);
if (adv7511->status == connector_status_connected)
status = connector_status_disconnected;
} else {
/* Renable HPD sensing */
if (adv7511->type == ADV7535)
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7535_REG_POWER2_HPD_OVERRIDE,
ADV7535_REG_POWER2_HPD_OVERRIDE);
else
regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
ADV7511_REG_POWER2_HPD_SRC_MASK,
ADV7511_REG_POWER2_HPD_SRC_BOTH);
}
adv7511->status = status;
return status;
}
static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
const struct drm_display_mode *mode)
{
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static void adv7511_mode_set(struct adv7511 *adv7511,
const struct drm_display_mode *mode,
const struct drm_display_mode *adj_mode)
{
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 (drm_mode_vrefresh(mode) <= 24)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
else if (drm_mode_vrefresh(mode) <= 25)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
else if (drm_mode_vrefresh(mode) <= 30)
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
else
low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
if (adv7511->type == ADV7511)
regmap_update_bits(adv7511->regmap, 0xfb,
0x6, low_refresh_rate << 1);
else
regmap_update_bits(adv7511->regmap, 0x4a,
0xc, low_refresh_rate << 2);
regmap_update_bits(adv7511->regmap, 0x17,
0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
drm_mode_copy(&adv7511->curr_mode, adj_mode);
/*
* 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;
}
/* -----------------------------------------------------------------------------
* DRM Connector Operations
*/
static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
{
return container_of(connector, struct adv7511, connector);
}
static int adv7511_connector_get_modes(struct drm_connector *connector)
{
struct adv7511 *adv = connector_to_adv7511(connector);
return adv7511_get_modes(adv, connector);
}
static enum drm_mode_status
adv7511_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct adv7511 *adv = connector_to_adv7511(connector);
return adv7511_mode_valid(adv, mode);
}
static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
.get_modes = adv7511_connector_get_modes,
.mode_valid = adv7511_connector_mode_valid,
};
static enum drm_connector_status
adv7511_connector_detect(struct drm_connector *connector, bool force)
{
struct adv7511 *adv = connector_to_adv7511(connector);
return adv7511_detect(adv, connector);
}
static const struct drm_connector_funcs adv7511_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = adv7511_connector_detect,
.destroy = drm_connector_cleanup,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int adv7511_connector_init(struct adv7511 *adv)
{
struct drm_bridge *bridge = &adv->bridge;
int ret;
if (!bridge->encoder) {
DRM_ERROR("Parent encoder object not found");
return -ENODEV;
}
if (adv->i2c_main->irq)
adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
else
adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
ret = drm_connector_init(bridge->dev, &adv->connector,
&adv7511_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
if (ret < 0) {
DRM_ERROR("Failed to initialize connector with drm\n");
return ret;
}
drm_connector_helper_add(&adv->connector,
&adv7511_connector_helper_funcs);
drm_connector_attach_encoder(&adv->connector, bridge->encoder);
return 0;
}
/* -----------------------------------------------------------------------------
* DRM Bridge Operations
*/
static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
{
return container_of(bridge, struct adv7511, bridge);
}
static void adv7511_bridge_enable(struct drm_bridge *bridge)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
adv7511_power_on(adv);
}
static void adv7511_bridge_disable(struct drm_bridge *bridge)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
adv7511_power_off(adv);
}
static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
const struct drm_display_mode *adj_mode)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
adv7511_mode_set(adv, mode, adj_mode);
}
static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_info *info,
const struct drm_display_mode *mode)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
if (adv->type == ADV7533 || adv->type == ADV7535)
return adv7533_mode_valid(adv, mode);
else
return adv7511_mode_valid(adv, mode);
}
static int adv7511_bridge_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
int ret = 0;
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
ret = adv7511_connector_init(adv);
if (ret < 0)
return ret;
}
if (adv->i2c_main->irq)
regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
ADV7511_INT0_HPD);
return ret;
}
static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
return adv7511_detect(adv, NULL);
}
static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge,
struct drm_connector *connector)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
return adv7511_get_edid(adv, connector);
}
static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
enum drm_connector_status status)
{
struct adv7511 *adv = bridge_to_adv7511(bridge);
if (status == connector_status_disconnected)
cec_phys_addr_invalidate(adv->cec_adap);
}
static const struct drm_bridge_funcs adv7511_bridge_funcs = {
.enable = adv7511_bridge_enable,
.disable = adv7511_bridge_disable,
.mode_set = adv7511_bridge_mode_set,
.mode_valid = adv7511_bridge_mode_valid,
.attach = adv7511_bridge_attach,
.detect = adv7511_bridge_detect,
.get_edid = adv7511_bridge_get_edid,
.hpd_notify = adv7511_bridge_hpd_notify,
};
/* -----------------------------------------------------------------------------
* Probe & remove
*/
static const char * const adv7511_supply_names[] = {
"avdd",
"dvdd",
"pvdd",
"bgvdd",
"dvdd-3v",
};
static const char * const adv7533_supply_names[] = {
"avdd",
"dvdd",
"pvdd",
"a2vdd",