diff options
| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-06-22 20:39:24 +0100 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-06-22 20:39:24 +0100 |
| commit | d01b407f910d35727e28c1baf4b70ef6e53c0c61 (patch) | |
| tree | 62b9a0cde2acf30752450a122d68c6633d1c742a | |
| parent | 310d39e1069d5194f14849059be53c70bfb58b9c (diff) | |
OMAP: DSS2: RFBI: add rfbi_bus_lock
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>
| -rw-r--r-- | drivers/video/omap2/dss/rfbi.c | 16 | ||||
| -rw-r--r-- | include/video/omapdss.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index 0985f2fdd75..46817e7fdaf 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 <video/omapdss.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); diff --git a/include/video/omapdss.h b/include/video/omapdss.h index e3c9e0813f5..943c0e85f2f 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.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(struct omap_dss_device *dssdev); |