[media] ivtv: Internally separate encoder & decoder standard setting

Internally separates the setting of the broadcast standard for the encoder &
decoder. Externally there's no change in functionality.

[awalls@md.metrocast.net: Edited to fix a checkpatch gripe about multiple
assignment and to remove a now unused DEFINE_WAIT() due to this patch]
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>

drivers/media/video/ivtv/ivtv-driver.c

@@ -1328,6 +1328,8 @@ int ivtv_init_on_first_open(struct ivtv *itv)
 	if (!itv->has_cx23415)
 		write_reg_sync(0x03, IVTV_REG_DMACONTROL);
 
+	ivtv_s_std_enc(itv, &itv->tuner_std);
+
 	/* Default interrupts enabled. For the PVR350 this includes the
 	   decoder VSYNC interrupt, which is always on. It is not only used
 	   during decoding but also by the OSD.
@@ -1336,12 +1338,10 @@ int ivtv_init_on_first_open(struct ivtv *itv)
 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
 		ivtv_set_osd_alpha(itv);
-	}
-	else
+		ivtv_s_std_dec(itv, &itv->tuner_std);
+	} else {
 		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);
-
-	/* For cards with video out, this call needs interrupts enabled */
-	ivtv_s_std(NULL, &fh, &itv->tuner_std);
+	}
 
 	/* Setup initial controls */
 	cx2341x_handler_setup(&itv->cxhdl);

drivers/media/video/ivtv/ivtv-firmware.c

@@ -280,8 +280,6 @@ int ivtv_firmware_restart(struct ivtv *itv)
 {
 	int rc = 0;
 	v4l2_std_id std;
-	struct ivtv_open_id fh;
-	fh.itv = itv;
 
 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
 		/* Display test image during restart */
@@ -301,14 +299,19 @@ int ivtv_firmware_restart(struct ivtv *itv)
 	/* Allow settings to reload */
 	ivtv_mailbox_cache_invalidate(itv);
 
-	/* Restore video standard */
+	/* Restore encoder video standard */
 	std = itv->std;
 	itv->std = 0;
-	ivtv_s_std(NULL, &fh, &std);
+	ivtv_s_std_enc(itv, &std);
 
 	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
 		ivtv_init_mpeg_decoder(itv);
 
+		/* Restore decoder video standard */
+		std = itv->std_out;
+		itv->std_out = 0;
+		ivtv_s_std_dec(itv, &std);
+
 		/* Restore framebuffer if active */
 		if (itv->ivtvfb_restore)
 			itv->ivtvfb_restore(itv);

drivers/media/video/ivtv/ivtv-ioctl.c

@@ -1071,28 +1071,8 @@ static int ivtv_g_std(struct file *file, void *fh, v4l2_std_id *std)
 	return 0;
 }
 
-int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std)
+void ivtv_s_std_enc(struct ivtv *itv, v4l2_std_id *std)
 {
-	DEFINE_WAIT(wait);
-	struct ivtv *itv = fh2id(fh)->itv;
-	struct yuv_playback_info *yi = &itv->yuv_info;
-	int f;
-
-	if ((*std & V4L2_STD_ALL) == 0)
-		return -EINVAL;
-
-	if (*std == itv->std)
-		return 0;
-
-	if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ||
-	    atomic_read(&itv->capturing) > 0 ||
-	    atomic_read(&itv->decoding) > 0) {
-		/* Switching standard would turn off the radio or mess
-		   with already running streams, prevent that by
-		   returning EBUSY. */
-		return -EBUSY;
-	}
-
 	itv->std = *std;
 	itv->is_60hz = (*std & V4L2_STD_525_60) ? 1 : 0;
 	itv->is_50hz = !itv->is_60hz;
@@ -1106,48 +1086,79 @@ int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std)
 	if (itv->hw_flags & IVTV_HW_CX25840)
 		itv->vbi.sliced_decoder_line_size = itv->is_60hz ? 272 : 284;
 
-	IVTV_DEBUG_INFO("Switching standard to %llx.\n", (unsigned long long)itv->std);
-
 	/* Tuner */
 	ivtv_call_all(itv, core, s_std, itv->std);
+}
 
-	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
-		/* set display standard */
-		itv->std_out = *std;
-		itv->is_out_60hz = itv->is_60hz;
-		itv->is_out_50hz = itv->is_50hz;
-		ivtv_call_all(itv, video, s_std_output, itv->std_out);
-
-		/*
-		 * The next firmware call is time sensitive. Time it to
-		 * avoid risk of a hard lock, by trying to ensure the call
-		 * happens within the first 100 lines of the top field.
-		 * Make 4 attempts to sync to the decoder before giving up.
-		 */
-		for (f = 0; f < 4; f++) {
-			prepare_to_wait(&itv->vsync_waitq, &wait,
-					TASK_UNINTERRUPTIBLE);
-			if ((read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16) < 100)
-				break;
-			schedule_timeout(msecs_to_jiffies(25));
-		}
-		finish_wait(&itv->vsync_waitq, &wait);
-
-		if (f == 4)
-			IVTV_WARN("Mode change failed to sync to decoder\n");
-
-		ivtv_vapi(itv, CX2341X_DEC_SET_STANDARD, 1, itv->is_out_50hz);
-		itv->main_rect.left = itv->main_rect.top = 0;
-		itv->main_rect.width = 720;
-		itv->main_rect.height = itv->cxhdl.height;
-		ivtv_vapi(itv, CX2341X_OSD_SET_FRAMEBUFFER_WINDOW, 4,
-			720, itv->main_rect.height, 0, 0);
-		yi->main_rect = itv->main_rect;
-		if (!itv->osd_info) {
-			yi->osd_full_w = 720;
-			yi->osd_full_h = itv->is_out_50hz ? 576 : 480;
-		}
+void ivtv_s_std_dec(struct ivtv *itv, v4l2_std_id *std)
+{
+	struct yuv_playback_info *yi = &itv->yuv_info;
+	DEFINE_WAIT(wait);
+	int f;
+
+	/* set display standard */
+	itv->std_out = *std;
+	itv->is_out_60hz = (*std & V4L2_STD_525_60) ? 1 : 0;
+	itv->is_out_50hz = !itv->is_out_60hz;
+	ivtv_call_all(itv, video, s_std_output, itv->std_out);
+
+	/*
+	 * The next firmware call is time sensitive. Time it to
+	 * avoid risk of a hard lock, by trying to ensure the call
+	 * happens within the first 100 lines of the top field.
+	 * Make 4 attempts to sync to the decoder before giving up.
+	 */
+	for (f = 0; f < 4; f++) {
+		prepare_to_wait(&itv->vsync_waitq, &wait,
+				TASK_UNINTERRUPTIBLE);
+		if ((read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16) < 100)
+			break;
+		schedule_timeout(msecs_to_jiffies(25));
 	}
+	finish_wait(&itv->vsync_waitq, &wait);
+
+	if (f == 4)
+		IVTV_WARN("Mode change failed to sync to decoder\n");
+
+	ivtv_vapi(itv, CX2341X_DEC_SET_STANDARD, 1, itv->is_out_50hz);
+	itv->main_rect.left = 0;
+	itv->main_rect.top = 0;
+	itv->main_rect.width = 720;
+	itv->main_rect.height = itv->is_out_50hz ? 576 : 480;
+	ivtv_vapi(itv, CX2341X_OSD_SET_FRAMEBUFFER_WINDOW, 4,
+		720, itv->main_rect.height, 0, 0);
+	yi->main_rect = itv->main_rect;
+	if (!itv->osd_info) {
+		yi->osd_full_w = 720;
+		yi->osd_full_h = itv->is_out_50hz ? 576 : 480;
+	}
+}
+
+int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std)
+{
+	struct ivtv *itv = fh2id(fh)->itv;
+
+	if ((*std & V4L2_STD_ALL) == 0)
+		return -EINVAL;
+
+	if (*std == itv->std)
+		return 0;
+
+	if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ||
+	    atomic_read(&itv->capturing) > 0 ||
+	    atomic_read(&itv->decoding) > 0) {
+		/* Switching standard would mess with already running
+		   streams, prevent that by returning EBUSY. */
+		return -EBUSY;
+	}
+
+	IVTV_DEBUG_INFO("Switching standard to %llx.\n",
+		(unsigned long long)itv->std);
+
+	ivtv_s_std_enc(itv, std);
+	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
+		ivtv_s_std_dec(itv, std);
+
 	return 0;
 }
 

drivers/media/video/ivtv/ivtv-ioctl.h

@@ -27,7 +27,8 @@ u16 ivtv_get_service_set(struct v4l2_sliced_vbi_format *fmt);
 void ivtv_set_osd_alpha(struct ivtv *itv);
 int ivtv_set_speed(struct ivtv *itv, int speed);
 void ivtv_set_funcs(struct video_device *vdev);
-int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std);
+void ivtv_s_std_enc(struct ivtv *itv, v4l2_std_id *std);
+void ivtv_s_std_dec(struct ivtv *itv, v4l2_std_id *std);
 int ivtv_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf);
 int ivtv_s_input(struct file *file, void *fh, unsigned int inp);
 long ivtv_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);

drivers/media/video/ivtv/ivtv-vbi.c

@@ -71,7 +71,7 @@ static void ivtv_set_wss(struct ivtv *itv, int enabled, int mode)
 	   Turning this signal on and off can confuse certain
 	   TVs. As far as I can tell there is no reason not to
 	   transmit this signal. */
-	if ((itv->std & V4L2_STD_625_50) && !enabled) {
+	if ((itv->std_out & V4L2_STD_625_50) && !enabled) {
 		enabled = 1;
 		mode = 0x08;  /* 4x3 full format */
 	}

drivers/media/video/ivtv/ivtvfb.c

@@ -247,7 +247,7 @@ static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords
 
 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
 {
-	int osd_height_limit = itv->is_50hz ? 576 : 480;
+	int osd_height_limit = itv->is_out_50hz ? 576 : 480;
 
 	/* Only fail if resolution too high, otherwise fudge the start coords. */
 	if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
@@ -471,9 +471,9 @@ static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long ar
 			vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
 					FB_VBLANK_HAVE_VSYNC;
 			trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16;
-			if (itv->is_50hz && trace > 312)
+			if (itv->is_out_50hz && trace > 312)
 				trace -= 312;
-			else if (itv->is_60hz && trace > 262)
+			else if (itv->is_out_60hz && trace > 262)
 				trace -= 262;
 			if (trace == 1)
 				vblank.flags |= FB_VBLANK_VSYNCING;
@@ -656,7 +656,7 @@ static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
 	IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
 
 	/* Set base references for mode calcs. */
-	if (itv->is_50hz) {
+	if (itv->is_out_50hz) {
 		pixclock = 84316;
 		hlimit = 776;
 		vlimit = 591;
@@ -784,12 +784,12 @@ static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
 	   If the margins are too large, just center the screen
 	   (enforcing margins causes too many problems) */
 
-	if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
+	if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1)
 		var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
-	}
-	if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
-		var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
-	}
+
+	if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481))
+		var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) -
+			var->yres) / 2);
 
 	/* Maintain overall 'size' for a constant refresh rate */
 	var->right_margin = hlimit - var->left_margin - var->xres;
@@ -1008,19 +1008,21 @@ static int ivtvfb_init_vidmode(struct ivtv *itv)
 	/* Hardware coords start at 0, user coords start at 1. */
 	osd_left--;
 
-	start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
+	start_window.left = osd_left >= 0 ?
+		 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
 
 	oi->display_byte_stride =
 			start_window.width * oi->bytes_per_pixel;
 
 	/* Vertical size & position */
 
-	max_height = itv->is_50hz ? 576 : 480;
+	max_height = itv->is_out_50hz ? 576 : 480;
 
 	if (osd_yres > max_height)
 		osd_yres = max_height;
 
-	start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
+	start_window.height = osd_yres ?
+		osd_yres : itv->is_out_50hz ? 480 : 400;
 
 	/* Check vertical start (osd_upper). */
 	if (osd_upper + start_window.height > max_height + 1) {