diff options
| author | Jassi Brar <jaswinder.singh@linaro.org> | 2012-06-27 19:34:56 +0530 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-06-29 09:42:42 +0300 |
| commit | 3a5383a2373fd5bc5ebdd781c8ac89ab5d0cb8a4 (patch) | |
| tree | f568116f7c39ee62ab42ab745946d55b48703cd6 /drivers/video | |
| parent | ece2f1539e917a4f23c30c2cca41ed5aa127abe3 (diff) | |
| download | op-kernel-dev-3a5383a2373fd5bc5ebdd781c8ac89ab5d0cb8a4.zip op-kernel-dev-3a5383a2373fd5bc5ebdd781c8ac89ab5d0cb8a4.tar.gz | |
OMAPDSS: HDMI: Replace spinlock with mutex in hdmi_check_hpd_state
State change of HDMI PHY could potentially take many millisecs, we can do
better by protecting things in hdmi_set_phy_pwr() with a mutex rather than
a spin_lock_irqsave.
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/omap2/dss/hdmi.c | 1 | ||||
| -rw-r--r-- | drivers/video/omap2/dss/ti_hdmi.h | 1 | ||||
| -rw-r--r-- | drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c | 7 |
3 files changed, 4 insertions, 5 deletions
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index b07e16b..fb834ab 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -758,6 +758,7 @@ static int __init omapdss_hdmihw_probe(struct platform_device *pdev) hdmi.ip_data.core_av_offset = HDMI_CORE_AV; hdmi.ip_data.pll_offset = HDMI_PLLCTRL; hdmi.ip_data.phy_offset = HDMI_PHY; + mutex_init(&hdmi.ip_data.lock); hdmi_panel_init(); diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h index d174ca1..cc292b8 100644 --- a/drivers/video/omap2/dss/ti_hdmi.h +++ b/drivers/video/omap2/dss/ti_hdmi.h @@ -177,6 +177,7 @@ struct hdmi_ip_data { /* ti_hdmi_4xxx_ip private data. These should be in a separate struct */ int hpd_gpio; + struct mutex lock; }; int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data); void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data); diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c index 3fa3d98d..49b171b 100644 --- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c +++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c @@ -235,13 +235,10 @@ void ti_hdmi_4xxx_pll_disable(struct hdmi_ip_data *ip_data) static int hdmi_check_hpd_state(struct hdmi_ip_data *ip_data) { - unsigned long flags; bool hpd; int r; - /* this should be in ti_hdmi_4xxx_ip private data */ - static DEFINE_SPINLOCK(phy_tx_lock); - spin_lock_irqsave(&phy_tx_lock, flags); + mutex_lock(&ip_data->lock); hpd = gpio_get_value(ip_data->hpd_gpio); @@ -257,7 +254,7 @@ static int hdmi_check_hpd_state(struct hdmi_ip_data *ip_data) } err: - spin_unlock_irqrestore(&phy_tx_lock, flags); + mutex_unlock(&ip_data->lock); return r; } |
