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drm: sti: remove gpio for HDMI hot plug detection

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gpio used for HDMI hot plug detection is useless,
HDMI_STI register contains an hot plug detection status bit.
Fix binding documentation.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
This commit is contained in:
Benjamin Gaignard 2014-10-09 08:53:35 +02:00
parent 41a14623bd
commit 765692078f
3 changed files with 5 additions and 13 deletions
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2
Documentation/devicetree/bindings/gpu/st,stih4xx.txt
View File

@ -68,7 +68,6 @@ STMicroelectronics stih4xx platforms
number of clocks may depend of the SoC type.
- clock-names: names of the clocks listed in clocks property in the same
order.
- hdmi,hpd-gpio: gpio id to detect if an hdmi cable is plugged or not.
- ddc: phandle of an I2C controller used for DDC EDID probing
sti-hda:
@ -174,7 +173,6 @@ Example:
interrupt-names = "irq";
clock-names = "pix", "tmds", "phy", "audio";
clocks = <&clockgen_c_vcc CLK_S_PIX_HDMI>, <&clockgen_c_vcc CLK_S_TMDS_HDMI>, <&clockgen_c_vcc CLK_S_HDMI_REJECT_PLL>, <&clockgen_b1 CLK_S_PCM_0>;
hdmi,hpd-gpio = <&PIO2 5>;
};
sti-hda@fe85a000 {

11
drivers/gpu/drm/sti/sti_hdmi.c
View File

@ -130,8 +130,7 @@ static irqreturn_t hdmi_irq_thread(int irq, void *arg)
/* Hot plug/unplug IRQ */
if (hdmi->irq_status & HDMI_INT_HOT_PLUG) {
/* read gpio to get the status */
hdmi->hpd = gpio_get_value(hdmi->hpd_gpio);
hdmi->hpd = readl(hdmi->regs + HDMI_STA) & HDMI_STA_HOT_PLUG;
if (hdmi->drm_dev)
drm_helper_hpd_irq_event(hdmi->drm_dev);
}
@ -766,13 +765,7 @@ static int sti_hdmi_probe(struct platform_device *pdev)
return PTR_ERR(hdmi->clk_audio);
}
hdmi->hpd_gpio = of_get_named_gpio(np, "hdmi,hpd-gpio", 0);
if (hdmi->hpd_gpio < 0) {
DRM_ERROR("Failed to get hdmi hpd-gpio\n");
return -EIO;
}
hdmi->hpd = gpio_get_value(hdmi->hpd_gpio);
hdmi->hpd = readl(hdmi->regs + HDMI_STA) & HDMI_STA_HOT_PLUG;
init_waitqueue_head(&hdmi->wait_event);

5
drivers/gpu/drm/sti/sti_hdmi.h
View File

@ -14,6 +14,9 @@
#define HDMI_STA 0x0010
#define HDMI_STA_DLL_LCK BIT(5)
#define HDMI_STA_HOT_PLUG_SHIFT 4
#define HDMI_STA_HOT_PLUG (1 << HDMI_STA_HOT_PLUG_SHIFT)
struct sti_hdmi;
struct hdmi_phy_ops {
@ -37,7 +40,6 @@ struct hdmi_phy_ops {
* @irq_status: interrupt status register
* @phy_ops: phy start/stop operations
* @enabled: true if hdmi is enabled else false
* @hpd_gpio: hdmi hot plug detect gpio number
* @hpd: hot plug detect status
* @wait_event: wait event
* @event_received: wait event status
@ -57,7 +59,6 @@ struct sti_hdmi {
u32 irq_status;
struct hdmi_phy_ops *phy_ops;
bool enabled;
int hpd_gpio;
bool hpd;
wait_queue_head_t wait_event;
bool event_received;