This converts the Analogix display port to use GPIO descriptors
instead of DT-extracted numbers.
Cc: Douglas Anderson <diand...@chromium.org>
Cc: Sean Paul <seanp...@chromium.org>
Cc: Marek Szyprowski <m.szyprow...@samsung.com>
Cc: Enric Balletbo i Serra <enric.balle...@collabora.com>
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
.../drm/bridge/analogix/analogix_dp_core.c | 28 +++++++++----------
.../drm/bridge/analogix/analogix_dp_core.h | 4 ++-
.../gpu/drm/bridge/analogix/analogix_dp_reg.c | 14 +++++-----
3 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 225f5e5dd69b..64842bbb2f3d 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -18,8 +18,7 @@
#include <linux/iopoll.h>
#include <linux/interrupt.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/component.h>
#include <linux/phy/phy.h>
@@ -1585,12 +1584,18 @@ analogix_dp_bind(struct device *dev, struct drm_device
*drm_dev,
dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd");
- dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
- if (!gpio_is_valid(dp->hpd_gpio))
- dp->hpd_gpio = of_get_named_gpio(dev->of_node,
- "samsung,hpd-gpio", 0);
+ /* Try two different names */
+ dp->hpd_gpiod = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
+ if (!dp->hpd_gpiod)
+ dp->hpd_gpiod = devm_gpiod_get_optional(dev, "samsung,hpd",
+ GPIOD_IN);
+ if (IS_ERR(dp->hpd_gpiod)) {
+ dev_err(dev, "error getting HDP GPIO: %ld\n",
+ PTR_ERR(dp->hpd_gpiod));
+ return ERR_CAST(dp->hpd_gpiod);
+ }
- if (gpio_is_valid(dp->hpd_gpio)) {
+ if (dp->hpd_gpiod) {
/*
* Set up the hotplug GPIO from the device tree as an interrupt.
* Simply specifying a different interrupt in the device tree
@@ -1598,16 +1603,9 @@ analogix_dp_bind(struct device *dev, struct drm_device
*drm_dev,
* using a GPIO. We also need the actual GPIO specifier so
* that we can get the current state of the GPIO.
*/
- ret = devm_gpio_request_one(&pdev->dev, dp->hpd_gpio, GPIOF_IN,
- "hpd_gpio");
- if (ret) {
- dev_err(&pdev->dev, "failed to get hpd gpio\n");
- return ERR_PTR(ret);
- }
- dp->irq = gpio_to_irq(dp->hpd_gpio);
+ dp->irq = gpiod_to_irq(dp->hpd_gpiod);
irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
} else {
- dp->hpd_gpio = -ENODEV;
dp->irq = platform_get_irq(pdev, 0);
irq_flags = 0;
}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 769255dc6e99..dc65c2bafa63 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -38,6 +38,8 @@
#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
+struct gpio_desc;
+
enum link_lane_count_type {
LANE_COUNT1 = 1,
LANE_COUNT2 = 2,
@@ -171,7 +173,7 @@ struct analogix_dp_device {
struct link_train link_train;
struct phy *phy;
int dpms_mode;
- int hpd_gpio;
+ struct gpio_desc *hpd_gpiod;
bool force_hpd;
bool psr_enable;
bool fast_train_enable;
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index a5f2763d72e4..7aab2d6d710c 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -12,7 +12,7 @@
#include <linux/delay.h>
#include <linux/device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/iopoll.h>
@@ -397,7 +397,7 @@ void analogix_dp_clear_hotplug_interrupts(struct
analogix_dp_device *dp)
{
u32 reg;
- if (gpio_is_valid(dp->hpd_gpio))
+ if (dp->hpd_gpiod)
return;
reg = HOTPLUG_CHG | HPD_LOST | PLUG;
@@ -411,7 +411,7 @@ void analogix_dp_init_hpd(struct analogix_dp_device *dp)
{
u32 reg;
- if (gpio_is_valid(dp->hpd_gpio))
+ if (dp->hpd_gpiod)
return;
analogix_dp_clear_hotplug_interrupts(dp);
@@ -434,8 +434,8 @@ enum dp_irq_type analogix_dp_get_irq_type(struct
analogix_dp_device *dp)
{
u32 reg;
- if (gpio_is_valid(dp->hpd_gpio)) {
- reg = gpio_get_value(dp->hpd_gpio);
+ if (dp->hpd_gpiod) {
+ reg = gpiod_get_value(dp->hpd_gpiod);
if (reg)
return DP_IRQ_TYPE_HP_CABLE_IN;
else
@@ -507,8 +507,8 @@ int analogix_dp_get_plug_in_status(struct
analogix_dp_device *dp)
{
u32 reg;
- if (gpio_is_valid(dp->hpd_gpio)) {
- if (gpio_get_value(dp->hpd_gpio))
+ if (dp->hpd_gpiod) {
+ if (gpiod_get_value(dp->hpd_gpiod))
return 0;
} else {
reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
--
2.20.1
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