[U-Boot] [PATCH 1/2] i.MX: mxc_ipuv3_fb: add ipuv3_fb_shutdown() routine to stop IPU before bootm

Eric Nelson
2012-09-21T20:56:58Z

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
drivers/video/mxc_ipuv3_fb.c | 20 ++++++++++++++++++++
include/ipu_pixfmt.h | 1 +
2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/drivers/video/mxc_ipuv3_fb.c b/drivers/video/mxc_ipuv3_fb.c
index c38e22d..47b336e 100644
--- a/drivers/video/mxc_ipuv3_fb.c
+++ b/drivers/video/mxc_ipuv3_fb.c
@@ -38,6 +38,7 @@
#include "videomodes.h"
#include "ipu.h"
#include "mxcfb.h"
+#include "ipu_regs.h"

static int mxcfb_map_video_memory(struct fb_info *fbi);
static int mxcfb_unmap_video_memory(struct fb_info *fbi);
@@ -576,6 +577,25 @@ err0:
return ret;
}

+void ipuv3_fb_shutdown(void)
+{
+ int i;
+ struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
+
+ for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
+ struct fb_info *fbi = mxcfb_info[i];
+ if (fbi) {
+ struct mxcfb_info *mxc_fbi = fbi->par;
+ ipu_disable_channel(mxc_fbi->ipu_ch);
+ ipu_uninit_channel(mxc_fbi->ipu_ch);
+ }
+ }
+ for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
+ __raw_writel(__raw_readl(&stat->int_stat[i]),
+ &stat->int_stat[i]);
+ }
+}
+
void *video_hw_init(void)
{
int ret;
diff --git a/include/ipu_pixfmt.h b/include/ipu_pixfmt.h
index 0019898..4baa711 100644
--- a/include/ipu_pixfmt.h
+++ b/include/ipu_pixfmt.h
@@ -77,5 +77,6 @@
#define IPU_PIX_FMT_YUV422P fourcc('4', '2', '2', 'P') /*< 16 YUV 4:2:2 */

int ipuv3_fb_init(struct fb_videomode *mode, uint8_t disp, uint32_t pixfmt);
+void ipuv3_fb_shutdown(void);

#endif
--
1.7.9