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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>
This commit is contained in:
Tomi Valkeinen 2011-04-21 19:50:31 +03:00
parent c96c92d893
commit 773139f175
2 changed files with 18 additions and 0 deletions
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16
drivers/video/omap2/dss/rfbi.c
View File

@ -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);

2
include/video/omapdss.h
View File

@ -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);