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SubjectRe: [PATCH] drm/msm/hdmi: Use pinctrl in HDMI driver
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Hi Stephane,

On Fri, 2015-05-29 at 09:49 -0400, Stephane Viau wrote:
> Some targets (eg: msm8994) use the pinctrl framework to configure
> interface pins. This change adds support for initialization and
> pinctrl active/sleep state control for the HDMI driver.
>
> Signed-off-by: Stephane Viau <sviau@codeaurora.org>
> ---
> drivers/gpu/drm/msm/hdmi/hdmi.c | 25 +++++++++++++++++++++++++
> drivers/gpu/drm/msm/hdmi/hdmi.h | 5 +++++
> drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 31 +++++++++++++++++++++++++++++++
> 3 files changed, 61 insertions(+)
>

No devicetree binding documentation?

> static int hdmi_bind(struct device *dev, struct device *master, void *data)
> @@ -365,6 +379,7 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
> #ifdef CONFIG_OF
> struct device_node *of_node = dev->of_node;
> const struct of_device_id *match;
> + struct pinctrl *pinctrl;
>
> match = of_match_node(dt_match, of_node);
> if (match && match->data) {
> @@ -383,6 +398,16 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
> hdmi_cfg->mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel");
> hdmi_cfg->mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm");
>
> + /* not all targets have pinctrl, do not fail in case of error: */
> + pinctrl = devm_pinctrl_get(dev);
> + if (IS_ERR_OR_NULL(pinctrl)) {
> + dev_warn(dev, "cannot get pinctrl: %s\n", of_node->name);
> + } else {
> + hdmi_cfg->active = get_pinctrl_state(dev, pinctrl, "hdmi_active");
> + hdmi_cfg->sleep = get_pinctrl_state(dev, pinctrl, "hdmi_sleep");

How this differs from PINCTRL_STATE_DEFAULT and PINCTRL_STATE_SLEEP?

Regards,
Ivan


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