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authorIan Armstrong <ian@iarmst.demon.co.uk>2010-06-12 13:41:57 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-02 14:48:13 -0300
commit215659d14f9dbc849ccda1655c94d710f8cc6384 (patch)
tree7f1c65043106c2b14492616e48b17d76243a20f4 /drivers/media/video/ivtv/ivtvfb.c
parent914610e8c508224a6fb9fb501ed4bda25b340ba6 (diff)
V4L/DVB: ivtv: Automatic firmware reload
If the firmware has failed, this patch will automatically reload & restart the card. The previous card state will be restored on a successful restart. Firmware reload will only happen if neither the encoder or decoder is active. If the card is busy then behaviour is as before, returning -EIO on device access until the reload can occur. On cards that support video output, coloured bars will be displayed during the reload. Andy Walls (ivtv maintainer and patch committer) made minor tweaks to comments and the logged messages, but nothing substantial otherwise. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ivtv/ivtvfb.c')
-rw-r--r--drivers/media/video/ivtv/ivtvfb.c41
1 files changed, 39 insertions, 2 deletions
diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c
index 9ff3425891e..2c2d862ca89 100644
--- a/drivers/media/video/ivtv/ivtvfb.c
+++ b/drivers/media/video/ivtv/ivtvfb.c
@@ -53,6 +53,7 @@
#include "ivtv-i2c.h"
#include "ivtv-udma.h"
#include "ivtv-mailbox.h"
+#include "ivtv-firmware.h"
/* card parameters */
static int ivtvfb_card_id = -1;
@@ -178,6 +179,12 @@ struct osd_info {
struct fb_info ivtvfb_info;
struct fb_var_screeninfo ivtvfb_defined;
struct fb_fix_screeninfo ivtvfb_fix;
+
+ /* Used for a warm start */
+ struct fb_var_screeninfo fbvar_cur;
+ int blank_cur;
+ u32 palette_cur[256];
+ u32 pan_cur;
};
struct ivtv_osd_coords {
@@ -199,6 +206,7 @@ static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
u32 data[CX2341X_MBOX_MAX_DATA];
int rc;
+ ivtv_firmware_check(itv, "ivtvfb_get_framebuffer");
rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
*fbbase = data[0];
*fblength = data[1];
@@ -581,8 +589,10 @@ static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
ivtv_window.height = var->yres;
/* Minimum margin cannot be 0, as X won't allow such a mode */
- if (!var->upper_margin) var->upper_margin++;
- if (!var->left_margin) var->left_margin++;
+ if (!var->upper_margin)
+ var->upper_margin++;
+ if (!var->left_margin)
+ var->left_margin++;
ivtv_window.top = var->upper_margin - 1;
ivtv_window.left = var->left_margin - 1;
@@ -595,6 +605,9 @@ static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
/* Force update of yuv registers */
itv->yuv_info.yuv_forced_update = 1;
+ /* Keep a copy of these settings */
+ memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur));
+
IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
var->xres, var->yres,
var->xres_virtual, var->yres_virtual,
@@ -829,6 +842,8 @@ static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *inf
itv->yuv_info.osd_y_pan = var->yoffset;
/* Force update of yuv registers */
itv->yuv_info.yuv_forced_update = 1;
+ /* Remember this value */
+ itv->osd_info->pan_cur = osd_pan_index;
return 0;
}
@@ -842,6 +857,7 @@ static int ivtvfb_set_par(struct fb_info *info)
rc = ivtvfb_set_var(itv, &info->var);
ivtvfb_pan_display(&info->var, info);
ivtvfb_get_fix(itv, &info->fix);
+ ivtv_firmware_check(itv, "ivtvfb_set_par");
return rc;
}
@@ -859,6 +875,7 @@ static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
if (info->var.bits_per_pixel <= 8) {
write_reg(regno, 0x02a30);
write_reg(color, 0x02a34);
+ itv->osd_info->palette_cur[regno] = color;
return 0;
}
if (regno >= 16)
@@ -911,6 +928,7 @@ static int ivtvfb_blank(int blank_mode, struct fb_info *info)
ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
break;
}
+ itv->osd_info->blank_cur = blank_mode;
return 0;
}
@@ -929,6 +947,21 @@ static struct fb_ops ivtvfb_ops = {
.fb_blank = ivtvfb_blank,
};
+/* Restore hardware after firmware restart */
+static void ivtvfb_restore(struct ivtv *itv)
+{
+ struct osd_info *oi = itv->osd_info;
+ int i;
+
+ ivtvfb_set_var(itv, &oi->fbvar_cur);
+ ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info);
+ for (i = 0; i < 256; i++) {
+ write_reg(i, 0x02a30);
+ write_reg(oi->palette_cur[i], 0x02a34);
+ }
+ write_reg(oi->pan_cur, 0x02a0c);
+}
+
/* Initialization */
@@ -1192,6 +1225,9 @@ static int ivtvfb_init_card(struct ivtv *itv)
/* Enable the osd */
ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
+ /* Enable restart */
+ itv->ivtvfb_restore = ivtvfb_restore;
+
/* Allocate DMA */
ivtv_udma_alloc(itv);
return 0;
@@ -1226,6 +1262,7 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
return 0;
}
IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
+ itv->ivtvfb_restore = NULL;
ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
ivtvfb_release_buffers(itv);
itv->osd_video_pbase = 0;