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Commit 773139f1 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

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: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent c96c92d8

drivers/video/omap2/dss/rfbi.c

+16 −0
Original line number Diff line number Diff line
@@ -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);

include/video/omapdss.h

+2 −0
Original line number Diff line number Diff line
@@ -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);