Release 4.11 drivers/gpu/drm/msm/hdmi/hdmi_connector.c
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/gpio.h>
#include <linux/pinctrl/consumer.h>
#include "msm_kms.h"
#include "hdmi.h"
struct hdmi_connector {
struct drm_connector base;
struct hdmi *hdmi;
struct work_struct hpd_work;
};
#define to_hdmi_connector(x) container_of(x, struct hdmi_connector, base)
static void msm_hdmi_phy_reset(struct hdmi *hdmi)
{
unsigned int val;
val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET);
} else {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET);
}
if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
} else {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET_PLL);
}
msleep(100);
if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET);
} else {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET);
}
if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET_PLL);
} else {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Stephane Viau | 172 | 99.42% | 1 | 50.00% |
| Arnd Bergmann | 1 | 0.58% | 1 | 50.00% |
| Total | 173 | 100.00% | 2 | 100.00% |
static int gpio_config(struct hdmi *hdmi, bool on)
{
struct device *dev = &hdmi->pdev->dev;
const struct hdmi_platform_config *config = hdmi->config;
int ret, i;
if (on) {
for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
struct hdmi_gpio_data gpio = config->gpios[i];
if (gpio.num != -1) {
ret = gpio_request(gpio.num, gpio.label);
if (ret) {
dev_err(dev,
"'%s'(%d) gpio_request failed: %d\n",
gpio.label, gpio.num, ret);
goto err;
}
if (gpio.output) {
gpio_direction_output(gpio.num,
gpio.value);
} else {
gpio_direction_input(gpio.num);
gpio_set_value_cansleep(gpio.num,
gpio.value);
}
}
}
DBG("gpio on");
} else {
for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
struct hdmi_gpio_data gpio = config->gpios[i];
if (gpio.num == -1)
continue;
if (gpio.output) {
int value = gpio.value ? 0 : 1;
gpio_set_value_cansleep(gpio.num, value);
}
gpio_free(gpio.num);
};
DBG("gpio off");
}
return 0;
err:
while (i--) {
if (config->gpios[i].num != -1)
gpio_free(config->gpios[i].num);
}
return ret;
}
Contributors
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| Rob Clark | 131 | 45.33% | 2 | 28.57% |
| Stephane Viau | 13 | 4.50% | 2 | 28.57% |
| Beeresh Gopal | 6 | 2.08% | 1 | 14.29% |
| Total | 289 | 100.00% | 7 | 100.00% |
static int hpd_enable(struct hdmi_connector *hdmi_connector)
{
struct hdmi *hdmi = hdmi_connector->hdmi;
const struct hdmi_platform_config *config = hdmi->config;
struct device *dev = &hdmi->pdev->dev;
uint32_t hpd_ctrl;
int i, ret;
unsigned long flags;
for (i = 0; i < config->hpd_reg_cnt; i++) {
ret = regulator_enable(hdmi->hpd_regs[i]);
if (ret) {
dev_err(dev, "failed to enable hpd regulator: %s (%d)\n",
config->hpd_reg_names[i], ret);
goto fail;
}
}
ret = pinctrl_pm_select_default_state(dev);
if (ret) {
dev_err(dev, "pinctrl state chg failed: %d\n", ret);
goto fail;
}
ret = gpio_config(hdmi, true);
if (ret) {
dev_err(dev, "failed to configure GPIOs: %d\n", ret);
goto fail;
}
for (i = 0; i < config->hpd_clk_cnt; i++) {
if (config->hpd_freq && config->hpd_freq[i]) {
ret = clk_set_rate(hdmi->hpd_clks[i],
config->hpd_freq[i]);
if (ret)
dev_warn(dev, "failed to set clk %s (%d)\n",
config->hpd_clk_names[i], ret);
}
ret = clk_prepare_enable(hdmi->hpd_clks[i]);
if (ret) {
dev_err(dev, "failed to enable hpd clk: %s (%d)\n",
config->hpd_clk_names[i], ret);
goto fail;
}
}
msm_hdmi_set_mode(hdmi, false);
msm_hdmi_phy_reset(hdmi);
msm_hdmi_set_mode(hdmi, true);
hdmi_write(hdmi, REG_HDMI_USEC_REFTIMER, 0x0001001b);
/* enable HPD events: */
hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL,
HDMI_HPD_INT_CTRL_INT_CONNECT |
HDMI_HPD_INT_CTRL_INT_EN);
/* set timeout to 4.1ms (max) for hardware debounce */
spin_lock_irqsave(&hdmi->reg_lock, flags);
hpd_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_CTRL);
hpd_ctrl |= HDMI_HPD_CTRL_TIMEOUT(0x1fff);
/* Toggle HPD circuit to trigger HPD sense */
hdmi_write(hdmi, REG_HDMI_HPD_CTRL,
~HDMI_HPD_CTRL_ENABLE & hpd_ctrl);
hdmi_write(hdmi, REG_HDMI_HPD_CTRL,
HDMI_HPD_CTRL_ENABLE | hpd_ctrl);
spin_unlock_irqrestore(&hdmi->reg_lock, flags);
return 0;
fail:
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 211 | 55.97% | 2 | 22.22% |
| Stephane Viau | 85 | 22.55% | 4 | 44.44% |
| Jilai Wang | 78 | 20.69% | 2 | 22.22% |
| Arnd Bergmann | 3 | 0.80% | 1 | 11.11% |
| Total | 377 | 100.00% | 9 | 100.00% |
static void hdp_disable(struct hdmi_connector *hdmi_connector)
{
struct hdmi *hdmi = hdmi_connector->hdmi;
const struct hdmi_platform_config *config = hdmi->config;
struct device *dev = &hdmi->pdev->dev;
int i, ret = 0;
/* Disable HPD interrupt */
hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, 0);
msm_hdmi_set_mode(hdmi, false);
for (i = 0; i < config->hpd_clk_cnt; i++)
clk_disable_unprepare(hdmi->hpd_clks[i]);
ret = gpio_config(hdmi, false);
if (ret)
dev_warn(dev, "failed to unconfigure GPIOs: %d\n", ret);
ret = pinctrl_pm_select_sleep_state(dev);
if (ret)
dev_warn(dev, "pinctrl state chg failed: %d\n", ret);
for (i = 0; i < config->hpd_reg_cnt; i++) {
ret = regulator_disable(hdmi->hpd_regs[i]);
if (ret)
dev_warn(dev, "failed to disable hpd regulator: %s (%d)\n",
config->hpd_reg_names[i], ret);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 126 | 69.23% | 2 | 33.33% |
| Jilai Wang | 30 | 16.48% | 1 | 16.67% |
| Stephane Viau | 25 | 13.74% | 2 | 33.33% |
| Arnd Bergmann | 1 | 0.55% | 1 | 16.67% |
| Total | 182 | 100.00% | 6 | 100.00% |
static void
msm_hdmi_hotplug_work(struct work_struct *work)
{
struct hdmi_connector *hdmi_connector =
container_of(work, struct hdmi_connector, hpd_work);
struct drm_connector *connector = &hdmi_connector->base;
drm_helper_hpd_irq_event(connector->dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 42 | 97.67% | 1 | 50.00% |
| Arnd Bergmann | 1 | 2.33% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
void msm_hdmi_connector_irq(struct drm_connector *connector)
{
struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
struct hdmi *hdmi = hdmi_connector->hdmi;
uint32_t hpd_int_status, hpd_int_ctrl;
/* Process HPD: */
hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS);
hpd_int_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_INT_CTRL);
if ((hpd_int_ctrl & HDMI_HPD_INT_CTRL_INT_EN) &&
(hpd_int_status & HDMI_HPD_INT_STATUS_INT)) {
bool detected = !!(hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED);
/* ack & disable (temporarily) HPD events: */
hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL,
HDMI_HPD_INT_CTRL_INT_ACK);
DBG("status=%04x, ctrl=%04x", hpd_int_status, hpd_int_ctrl);
/* detect disconnect if we are connected or visa versa: */
hpd_int_ctrl = HDMI_HPD_INT_CTRL_INT_EN;
if (!detected)
hpd_int_ctrl |= HDMI_HPD_INT_CTRL_INT_CONNECT;
hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, hpd_int_ctrl);
queue_work(hdmi->workq, &hdmi_connector->hpd_work);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 123 | 91.79% | 3 | 50.00% |
| Jilai Wang | 10 | 7.46% | 2 | 33.33% |
| Arnd Bergmann | 1 | 0.75% | 1 | 16.67% |
| Total | 134 | 100.00% | 6 | 100.00% |
static enum drm_connector_status detect_reg(struct hdmi *hdmi)
{
uint32_t hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS);
return (hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED) ?
connector_status_connected : connector_status_disconnected;
}
Contributors
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| Rob Clark | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
#define HPD_GPIO_INDEX 2
static enum drm_connector_status detect_gpio(struct hdmi *hdmi)
{
const struct hdmi_platform_config *config = hdmi->config;
struct hdmi_gpio_data hpd_gpio = config->gpios[HPD_GPIO_INDEX];
return gpio_get_value(hpd_gpio.num) ?
connector_status_connected :
connector_status_disconnected;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 32 | 71.11% | 1 | 50.00% |
| Archit Taneja | 13 | 28.89% | 1 | 50.00% |
| Total | 45 | 100.00% | 2 | 100.00% |
static enum drm_connector_status hdmi_connector_detect(
struct drm_connector *connector, bool force)
{
struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
struct hdmi *hdmi = hdmi_connector->hdmi;
const struct hdmi_platform_config *config = hdmi->config;
struct hdmi_gpio_data hpd_gpio = config->gpios[HPD_GPIO_INDEX];
enum drm_connector_status stat_gpio, stat_reg;
int retry = 20;
/*
* some platforms may not have hpd gpio. Rely only on the status
* provided by REG_HDMI_HPD_INT_STATUS in this case.
*/
if (hpd_gpio.num == -1)
return detect_reg(hdmi);
do {
stat_gpio = detect_gpio(hdmi);
stat_reg = detect_reg(hdmi);
if (stat_gpio == stat_reg)
break;
mdelay(10);
} while (--retry);
/* the status we get from reading gpio seems to be more reliable,
* so trust that one the most if we didn't manage to get hdmi and
* gpio status to agree:
*/
if (stat_gpio != stat_reg) {
DBG("HDMI_HPD_INT_STATUS tells us: %d", stat_reg);
DBG("hpd gpio tells us: %d", stat_gpio);
}
return stat_gpio;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 106 | 74.13% | 4 | 80.00% |
| Archit Taneja | 37 | 25.87% | 1 | 20.00% |
| Total | 143 | 100.00% | 5 | 100.00% |
static void hdmi_connector_destroy(struct drm_connector *connector)
{
struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
hdp_disable(hdmi_connector);
drm_connector_cleanup(connector);
kfree(hdmi_connector);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 36 | 100.00% | 2 | 100.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
static int msm_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
struct hdmi *hdmi = hdmi_connector->hdmi;
struct edid *edid;
uint32_t hdmi_ctrl;
int ret = 0;
hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL);
hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE);
edid = drm_get_edid(connector, hdmi->i2c);
hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl);
hdmi->hdmi_mode = drm_detect_hdmi_monitor(edid);
drm_mode_connector_update_edid_property(connector, edid);
if (edid) {
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 112 | 91.80% | 2 | 50.00% |
| Jilai Wang | 9 | 7.38% | 1 | 25.00% |
| Arnd Bergmann | 1 | 0.82% | 1 | 25.00% |
| Total | 122 | 100.00% | 4 | 100.00% |
static int msm_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
struct hdmi *hdmi = hdmi_connector->hdmi;
const struct hdmi_platform_config *config = hdmi->config;
struct msm_drm_private *priv = connector->dev->dev_private;
struct msm_kms *kms = priv->kms;
long actual, requested;
requested = 1000 * mode->clock;
actual = kms->funcs->round_pixclk(kms,
requested, hdmi_connector->hdmi->encoder);
/* for mdp5/apq8074, we manage our own pixel clk (as opposed to
* mdp4/dtv stuff where pixel clk is assigned to mdp/encoder
* instead):
*/
if (config->pwr_clk_cnt > 0)
actual = clk_round_rate(hdmi->pwr_clks[0], actual);
DBG("requested=%ld, actual=%ld", requested, actual);
if (actual != requested)
return MODE_CLOCK_RANGE;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 140 | 99.29% | 3 | 75.00% |
| Arnd Bergmann | 1 | 0.71% | 1 | 25.00% |
| Total | 141 | 100.00% | 4 | 100.00% |
static const struct drm_connector_funcs hdmi_connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.detect = hdmi_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = hdmi_connector_destroy,
.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 const struct drm_connector_helper_funcs msm_hdmi_connector_helper_funcs = {
.get_modes = msm_hdmi_connector_get_modes,
.mode_valid = msm_hdmi_connector_mode_valid,
};
/* initialize connector */
struct drm_connector *msm_hdmi_connector_init(struct hdmi *hdmi)
{
struct drm_connector *connector = NULL;
struct hdmi_connector *hdmi_connector;
int ret;
hdmi_connector = kzalloc(sizeof(*hdmi_connector), GFP_KERNEL);
if (!hdmi_connector)
return ERR_PTR(-ENOMEM);
hdmi_connector->hdmi = hdmi;
INIT_WORK(&hdmi_connector->hpd_work, msm_hdmi_hotplug_work);
connector = &hdmi_connector->base;
drm_connector_init(hdmi->dev, connector, &hdmi_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
drm_connector_helper_add(connector, &msm_hdmi_connector_helper_funcs);
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
connector->interlace_allowed = 0;
connector->doublescan_allowed = 0;
ret = hpd_enable(hdmi_connector);
if (ret) {
dev_err(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
return ERR_PTR(ret);
}
drm_mode_connector_attach_encoder(connector, hdmi->encoder);
return connector;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 146 | 90.12% | 5 | 62.50% |
| Archit Taneja | 11 | 6.79% | 1 | 12.50% |
| Arnd Bergmann | 3 | 1.85% | 1 | 12.50% |
| Stephane Viau | 2 | 1.23% | 1 | 12.50% |
| Total | 162 | 100.00% | 8 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rob Clark | 1332 | 67.14% | 8 | 36.36% |
| Stephane Viau | 300 | 15.12% | 5 | 22.73% |
| Archit Taneja | 204 | 10.28% | 4 | 18.18% |
| Jilai Wang | 127 | 6.40% | 3 | 13.64% |
| Arnd Bergmann | 15 | 0.76% | 1 | 4.55% |
| Beeresh Gopal | 6 | 0.30% | 1 | 4.55% |
| Total | 1984 | 100.00% | 22 | 100.00% |
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