From: Tomi Valkeinen <tomi.valkeinen@ti.com> To: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Subject: [PATCH 3/8] OMAP: DSS2: RFBI: add rfbi_bus_lock Date: Tue, 10 May 2011 16:24:11 +0000 [thread overview] Message-ID: <1305044656-31512-4-git-send-email-tomi.valkeinen@ti.com> (raw) In-Reply-To: <1305044656-31512-1-git-send-email-tomi.valkeinen@ti.com> Add similar bus lock to RFBI as is in DSI. The panel driver can use the bus lock to mark that the RFBI bus is currently in use. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> --- arch/arm/plat-omap/include/plat/display.h | 2 ++ drivers/video/omap2/dss/rfbi.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h index bd0f08e..e6629eb 100644 --- a/arch/arm/plat-omap/include/plat/display.h +++ b/arch/arm/plat-omap/include/plat/display.h @@ -214,6 +214,8 @@ int omap_rfbi_enable_te(bool enable, unsigned line); int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode, unsigned hs_pulse_time, unsigned vs_pulse_time, int hs_pol_inv, int vs_pol_inv, int extif_div); +void rfbi_bus_lock(void); +void rfbi_bus_unlock(void); /* DSI */ void dsi_bus_lock(void); diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index 5ea17f4..b669071 100644 --- a/drivers/video/omap2/dss/rfbi.c +++ b/drivers/video/omap2/dss/rfbi.c @@ -32,6 +32,7 @@ #include <linux/ktime.h> #include <linux/hrtimer.h> #include <linux/seq_file.h> +#include <linux/semaphore.h> #include <plat/display.h> #include "dss.h" @@ -119,6 +120,8 @@ static struct { struct completion cmd_done; atomic_t cmd_fifo_full; atomic_t cmd_pending; + + struct semaphore bus_lock; } rfbi; struct update_region { @@ -146,6 +149,18 @@ static void rfbi_enable_clocks(bool enable) dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK); } +void rfbi_bus_lock(void) +{ + down(&rfbi.bus_lock); +} +EXPORT_SYMBOL(rfbi_bus_lock); + +void rfbi_bus_unlock(void) +{ + up(&rfbi.bus_lock); +} +EXPORT_SYMBOL(rfbi_bus_unlock); + void omap_rfbi_write_command(const void *buf, u32 len) { rfbi_enable_clocks(1); @@ -1022,6 +1037,7 @@ static int omap_rfbihw_probe(struct platform_device *pdev) rfbi.pdev = pdev; spin_lock_init(&rfbi.cmd_lock); + sema_init(&rfbi.bus_lock, 1); init_completion(&rfbi.cmd_done); atomic_set(&rfbi.cmd_fifo_full, 0); -- 1.7.4.1
WARNING: multiple messages have this Message-ID (diff)
From: Tomi Valkeinen <tomi.valkeinen@ti.com> To: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Subject: [PATCH 3/8] OMAP: DSS2: RFBI: add rfbi_bus_lock Date: Tue, 10 May 2011 19:24:11 +0300 [thread overview] Message-ID: <1305044656-31512-4-git-send-email-tomi.valkeinen@ti.com> (raw) In-Reply-To: <1305044656-31512-1-git-send-email-tomi.valkeinen@ti.com> Add similar bus lock to RFBI as is in DSI. The panel driver can use the bus lock to mark that the RFBI bus is currently in use. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> --- arch/arm/plat-omap/include/plat/display.h | 2 ++ drivers/video/omap2/dss/rfbi.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h index bd0f08e..e6629eb 100644 --- a/arch/arm/plat-omap/include/plat/display.h +++ b/arch/arm/plat-omap/include/plat/display.h @@ -214,6 +214,8 @@ int omap_rfbi_enable_te(bool enable, unsigned line); int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode, unsigned hs_pulse_time, unsigned vs_pulse_time, int hs_pol_inv, int vs_pol_inv, int extif_div); +void rfbi_bus_lock(void); +void rfbi_bus_unlock(void); /* DSI */ void dsi_bus_lock(void); diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index 5ea17f4..b669071 100644 --- a/drivers/video/omap2/dss/rfbi.c +++ b/drivers/video/omap2/dss/rfbi.c @@ -32,6 +32,7 @@ #include <linux/ktime.h> #include <linux/hrtimer.h> #include <linux/seq_file.h> +#include <linux/semaphore.h> #include <plat/display.h> #include "dss.h" @@ -119,6 +120,8 @@ static struct { struct completion cmd_done; atomic_t cmd_fifo_full; atomic_t cmd_pending; + + struct semaphore bus_lock; } rfbi; struct update_region { @@ -146,6 +149,18 @@ static void rfbi_enable_clocks(bool enable) dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK); } +void rfbi_bus_lock(void) +{ + down(&rfbi.bus_lock); +} +EXPORT_SYMBOL(rfbi_bus_lock); + +void rfbi_bus_unlock(void) +{ + up(&rfbi.bus_lock); +} +EXPORT_SYMBOL(rfbi_bus_unlock); + void omap_rfbi_write_command(const void *buf, u32 len) { rfbi_enable_clocks(1); @@ -1022,6 +1037,7 @@ static int omap_rfbihw_probe(struct platform_device *pdev) rfbi.pdev = pdev; spin_lock_init(&rfbi.cmd_lock); + sema_init(&rfbi.bus_lock, 1); init_completion(&rfbi.cmd_done); atomic_set(&rfbi.cmd_fifo_full, 0); -- 1.7.4.1
next prev parent reply other threads:[~2011-05-10 16:24 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-05-10 16:24 [PATCH 0/8] OMAP: DSS2: Miscellaneous patches Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 1/8] OMAP: DSS2: Add missing dummy functions Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 2/8] OMAPFB: fix wrong clock aliases and device name Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen [this message] 2011-05-10 16:24 ` [PATCH 3/8] OMAP: DSS2: RFBI: add rfbi_bus_lock Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 4/8] OMAP: DSS2: RFIB: clock enable/disable changes Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 5/8] OMAP: DSS2: RFBI: add omap_rfbi_configure Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 6/8] OMAP: DSS2: RFIB: cleanup Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 7/8] OMAP: DSS2: OMAPFB: remove dead code Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 16:24 ` [PATCH 8/8] OMAP: DSS2: OMAPFB: Reduce stack usage Tomi Valkeinen 2011-05-10 16:24 ` Tomi Valkeinen 2011-05-10 19:08 ` aaro.koskinen 2011-05-11 6:11 ` Tomi Valkeinen 2011-05-11 6:11 ` Tomi Valkeinen 2011-05-11 3:50 ` Janorkar, Mayuresh 2011-05-11 3:50 ` Janorkar, Mayuresh 2011-05-11 3:45 ` [PATCH 0/8] OMAP: DSS2: Miscellaneous patches Janorkar, Mayuresh 2011-05-11 3:57 ` Janorkar, Mayuresh 2011-05-11 6:12 ` Tomi Valkeinen 2011-05-11 6:12 ` Tomi Valkeinen
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