2014-11-26 20:16:38

by Jilai Wang

Subject: [PATCH 2/4] drm/msm/hdmi: enable regulators before clocks to avoid warnings

HPD regulators need to be enabled before clocks, otherwise clock
driver will report warning.

Change-Id: Ieca41722ae3b15873e6290649a21bbd13e1a4278
Signed-off-by: Jilai Wang <[email protected]>
---
drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 45 +++++++++++++------------------
1 file changed, 18 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index 92fddd8..caa1301 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -141,6 +141,15 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
uint32_t hpd_ctrl;
int i, ret;

+ for (i = 0; i < config->hpd_reg_cnt; i++) {
+ ret = regulator_enable(hdmi->hpd_regs[i]);
+ if (ret) {
+ dev_err(dev->dev, "failed to enable hpd regulator: %s (%d)\n",
+ config->hpd_reg_names[i], ret);
+ goto fail;
+ }
+ }
+
ret = gpio_config(hdmi, true);
if (ret) {
dev_err(dev->dev, "failed to configure GPIOs: %d\n", ret);
@@ -164,15 +173,6 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
}
}

- for (i = 0; i < config->hpd_reg_cnt; i++) {
- ret = regulator_enable(hdmi->hpd_regs[i]);
- if (ret) {
- dev_err(dev->dev, "failed to enable hpd regulator: %s (%d)\n",
- config->hpd_reg_names[i], ret);
- goto fail;
- }
- }
-
hdmi_set_mode(hdmi, false);
phy->funcs->reset(phy);
hdmi_set_mode(hdmi, true);
@@ -200,7 +200,7 @@ fail:
return ret;
}

-static int hdp_disable(struct hdmi_connector *hdmi_connector)
+static void hdp_disable(struct hdmi_connector *hdmi_connector)
{
struct hdmi *hdmi = hdmi_connector->hdmi;
const struct hdmi_platform_config *config = hdmi->config;
@@ -212,28 +212,19 @@ static int hdp_disable(struct hdmi_connector *hdmi_connector)

hdmi_set_mode(hdmi, false);

- for (i = 0; i < config->hpd_reg_cnt; i++) {
- ret = regulator_disable(hdmi->hpd_regs[i]);
- if (ret) {
- dev_err(dev->dev, "failed to disable hpd regulator: %s (%d)\n",
- config->hpd_reg_names[i], ret);
- goto fail;
- }
- }
-
for (i = 0; i < config->hpd_clk_cnt; i++)
clk_disable_unprepare(hdmi->hpd_clks[i]);

ret = gpio_config(hdmi, false);
- if (ret) {
- dev_err(dev->dev, "failed to unconfigure GPIOs: %d\n", ret);
- goto fail;
- }
-
- return 0;
+ if (ret)
+ dev_warn(dev->dev, "failed to unconfigure GPIOs: %d\n", ret);

-fail:
- return ret;
+ for (i = 0; i < config->hpd_reg_cnt; i++) {
+ ret = regulator_disable(hdmi->hpd_regs[i]);
+ if (ret)
+ dev_warn(dev->dev, "failed to disable hpd regulator: %s (%d)\n",
+ config->hpd_reg_names[i], ret);
+ }
}

static void
--
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a Linux Foundation Collaborative Project

2014-12-01 19:09:07

by Christopher Covington

Subject: Re: [PATCH 2/4] drm/msm/hdmi: enable regulators before clocks to avoid warnings

Hi Jilai,

On 11/26/2014 03:16 PM, Jilai Wang wrote:
> HPD regulators need to be enabled before clocks, otherwise clock
> driver will report warning.
>
> Change-Id: Ieca41722ae3b15873e6290649a21bbd13e1a4278

Nit: The upstream preference is to omit Change-Id lines. You should be able to
move .git/hooks/commit-msg to an alternate location and amend the patch to
remove it. Upstream checkpatch should warn about this--let me know if it's not
working properly.

Regards,
Chris

--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project