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drm/omap: HDMI PLL: use runtime pm 

To make it possible to use HDMI PLL for other video outputs than HDMI,
the HDMI PLL code needs to do runtime_get/put for the HDMI IP, so that
the IP (include the PLL) is enabled.

To do that we also need to store the HDMI pdev in the hdmi_pll_data.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2016-05-17 17:07:46 +03:00
parent 13ece4d309
commit 86c9305c86
2 changed files with 10 additions and 0 deletions
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1
drivers/gpu/drm/omapdrm/dss/hdmi.h
View File

@ -240,6 +240,7 @@ struct hdmi_pll_data {
void __iomem *base;
struct platform_device *pdev;
struct hdmi_wp_data *wp;
};

9
drivers/gpu/drm/omapdrm/dss/hdmi_pll.c
View File

@ -16,6 +16,7 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <video/omapdss.h>
@ -104,6 +105,9 @@ static int hdmi_pll_enable(struct dss_pll *dsspll)
struct hdmi_wp_data *wp = pll->wp;
int r;
r = pm_runtime_get_sync(&pll->pdev->dev);
WARN_ON(r < 0);
dss_ctrl_pll_enable(DSS_PLL_HDMI, true);
r = hdmi_wp_set_pll_pwr(wp, HDMI_PLLPWRCMD_BOTHON_ALLCLKS);
@ -117,10 +121,14 @@ static void hdmi_pll_disable(struct dss_pll *dsspll)
{
struct hdmi_pll_data *pll = container_of(dsspll, struct hdmi_pll_data, pll);
struct hdmi_wp_data *wp = pll->wp;
int r;
hdmi_wp_set_pll_pwr(wp, HDMI_PLLPWRCMD_ALLOFF);
dss_ctrl_pll_enable(DSS_PLL_HDMI, false);
r = pm_runtime_put_sync(&pll->pdev->dev);
WARN_ON(r < 0 && r != -ENOSYS);
}
static const struct dss_pll_ops dsi_pll_ops = {
@ -228,6 +236,7 @@ int hdmi_pll_init(struct platform_device *pdev, struct hdmi_pll_data *pll,
int r;
struct resource *res;
pll->pdev = pdev;
pll->wp = wp;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");