V4L/DVB (5102): make videodev to auto-generate standards

v4l2_tvnorm were meant to describe video standards and its names to V4L2 API.
However, this were doing by some static structures at the driver.

This patch changes the internals in a way that, at the driver, only a
v4l2_tvnorm (a 64 bit integer) should be filled, with all supported 
tvnorms. videodev will dynamically generate the proper API array
based on supported standards.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx88/cx88-core.c

@@ -636,30 +636,30 @@ int cx88_reset(struct cx88_core *core)
 
 /* ------------------------------------------------------------------ */
 
-static unsigned int inline norm_swidth(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_swidth(v4l2_std_id norm)
 {
-	return (norm->id & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 754 : 922;
+	return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 754 : 922;
 }
 
-static unsigned int inline norm_hdelay(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_hdelay(v4l2_std_id norm)
 {
-	return (norm->id & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 135 : 186;
+	return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 135 : 186;
 }
 
-static unsigned int inline norm_vdelay(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_vdelay(v4l2_std_id norm)
 {
-	return (norm->id & V4L2_STD_625_50) ? 0x24 : 0x18;
+	return (norm & V4L2_STD_625_50) ? 0x24 : 0x18;
 }
 
-static unsigned int inline norm_fsc8(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_fsc8(v4l2_std_id norm)
 {
-	if (norm->id & V4L2_STD_PAL_M)
+	if (norm & V4L2_STD_PAL_M)
 		return 28604892;      // 3.575611 MHz
 
-	if (norm->id & (V4L2_STD_PAL_Nc))
+	if (norm & (V4L2_STD_PAL_Nc))
 		return 28656448;      // 3.582056 MHz
 
-	if (norm->id & V4L2_STD_NTSC) // All NTSC/M and variants
+	if (norm & V4L2_STD_NTSC) // All NTSC/M and variants
 		return 28636360;      // 3.57954545 MHz +/- 10 Hz
 
 	/* SECAM have also different sub carrier for chroma,
@@ -671,20 +671,20 @@ static unsigned int inline norm_fsc8(struct v4l2_tvnorm *norm)
 	return 35468950;      // 4.43361875 MHz +/- 5 Hz
 }
 
-static unsigned int inline norm_htotal(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_htotal(v4l2_std_id norm)
 {
 
 	unsigned int fsc4=norm_fsc8(norm)/2;
 
 	/* returns 4*FSC / vtotal / frames per seconds */
-	return (norm->id & V4L2_STD_625_50) ?
+	return (norm & V4L2_STD_625_50) ?
 				((fsc4+312)/625+12)/25 :
 				((fsc4+262)/525*1001+15000)/30000;
 }
 
-static unsigned int inline norm_vbipack(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_vbipack(v4l2_std_id norm)
 {
-	return (norm->id & V4L2_STD_625_50) ? 511 : 400;
+	return (norm & V4L2_STD_625_50) ? 511 : 400;
 }
 
 int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int height,
@@ -697,7 +697,7 @@ int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int heig
 	dprintk(1,"set_scale: %dx%d [%s%s,%s]\n", width, height,
 		V4L2_FIELD_HAS_TOP(field)    ? "T" : "",
 		V4L2_FIELD_HAS_BOTTOM(field) ? "B" : "",
-		core->tvnorm->name);
+		v4l2_norm_to_name(core->tvnorm));
 	if (!V4L2_FIELD_HAS_BOTH(field))
 		height *= 2;
 
@@ -734,7 +734,7 @@ int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int heig
 	// setup filters
 	value = 0;
 	value |= (1 << 19);        // CFILT (default)
-	if (core->tvnorm->id & V4L2_STD_SECAM) {
+	if (core->tvnorm & V4L2_STD_SECAM) {
 		value |= (1 << 15);
 		value |= (1 << 16);
 	}
@@ -831,36 +831,36 @@ int cx88_stop_audio_dma(struct cx88_core *core)
 
 static int set_tvaudio(struct cx88_core *core)
 {
-	struct v4l2_tvnorm *norm = core->tvnorm;
+	v4l2_std_id norm = core->tvnorm;
 
 	if (CX88_VMUX_TELEVISION != INPUT(core->input)->type)
 		return 0;
 
-	if (V4L2_STD_PAL_BG & norm->id) {
+	if (V4L2_STD_PAL_BG & norm) {
 		core->tvaudio = WW_BG;
 
-	} else if (V4L2_STD_PAL_DK & norm->id) {
+	} else if (V4L2_STD_PAL_DK & norm) {
 		core->tvaudio = WW_DK;
 
-	} else if (V4L2_STD_PAL_I & norm->id) {
+	} else if (V4L2_STD_PAL_I & norm) {
 		core->tvaudio = WW_I;
 
-	} else if (V4L2_STD_SECAM_L & norm->id) {
+	} else if (V4L2_STD_SECAM_L & norm) {
 		core->tvaudio = WW_L;
 
-	} else if (V4L2_STD_SECAM_DK & norm->id) {
+	} else if (V4L2_STD_SECAM_DK & norm) {
 		core->tvaudio = WW_DK;
 
-	} else if ((V4L2_STD_NTSC_M & norm->id) ||
-		   (V4L2_STD_PAL_M  & norm->id)) {
+	} else if ((V4L2_STD_NTSC_M & norm) ||
+		   (V4L2_STD_PAL_M  & norm)) {
 		core->tvaudio = WW_BTSC;
 
-	} else if (V4L2_STD_NTSC_M_JP & norm->id) {
+	} else if (V4L2_STD_NTSC_M_JP & norm) {
 		core->tvaudio = WW_EIAJ;
 
 	} else {
 		printk("%s/0: tvaudio support needs work for this tv norm [%s], sorry\n",
-		       core->name, norm->name);
+		       core->name, v4l2_norm_to_name(core->tvnorm));
 		core->tvaudio = 0;
 		return 0;
 	}
@@ -879,7 +879,7 @@ static int set_tvaudio(struct cx88_core *core)
 
 
 
-int cx88_set_tvnorm(struct cx88_core *core, struct v4l2_tvnorm *norm)
+int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm)
 {
 	u32 fsc8;
 	u32 adc_clock;
@@ -896,28 +896,28 @@ int cx88_set_tvnorm(struct cx88_core *core, struct v4l2_tvnorm *norm)
 	step_db    = fsc8;
 	step_dr    = fsc8;
 
-	if (norm->id & V4L2_STD_NTSC_M_JP) {
+	if (norm & V4L2_STD_NTSC_M_JP) {
 		cxiformat = VideoFormatNTSCJapan;
 		cxoformat = 0x181f0008;
-	} else if (norm->id & V4L2_STD_NTSC_443) {
+	} else if (norm & V4L2_STD_NTSC_443) {
 		cxiformat = VideoFormatNTSC443;
 		cxoformat = 0x181f0008;
-	} else if (norm->id & V4L2_STD_PAL_M) {
+	} else if (norm & V4L2_STD_PAL_M) {
 		cxiformat = VideoFormatPALM;
 		cxoformat = 0x1c1f0008;
-	} else if (norm->id & V4L2_STD_PAL_N) {
+	} else if (norm & V4L2_STD_PAL_N) {
 		cxiformat = VideoFormatPALN;
 		cxoformat = 0x1c1f0008;
-	} else if (norm->id & V4L2_STD_PAL_Nc) {
+	} else if (norm & V4L2_STD_PAL_Nc) {
 		cxiformat = VideoFormatPALNC;
 		cxoformat = 0x1c1f0008;
-	} else if (norm->id & V4L2_STD_PAL_60) {
+	} else if (norm & V4L2_STD_PAL_60) {
 		cxiformat = VideoFormatPAL60;
 		cxoformat = 0x181f0008;
-	} else if (norm->id & V4L2_STD_NTSC) {
+	} else if (norm & V4L2_STD_NTSC) {
 		cxiformat = VideoFormatNTSC;
 		cxoformat = 0x181f0008;
-	} else if (norm->id & V4L2_STD_SECAM) {
+	} else if (norm & V4L2_STD_SECAM) {
 		step_db = 4250000 * 8;
 		step_dr = 4406250 * 8;
 
@@ -929,7 +929,8 @@ int cx88_set_tvnorm(struct cx88_core *core, struct v4l2_tvnorm *norm)
 	}
 
 	dprintk(1,"set_tvnorm: \"%s\" fsc8=%d adc=%d vdec=%d db/dr=%d/%d\n",
-		norm->name, fsc8, adc_clock, vdec_clock, step_db, step_dr);
+		v4l2_norm_to_name(core->tvnorm), fsc8, adc_clock, vdec_clock,
+		step_db, step_dr);
 	set_pll(core,2,vdec_clock);
 
 	dprintk(1,"set_tvnorm: MO_INPUT_FORMAT  0x%08x [old=0x%08x]\n",
@@ -988,7 +989,7 @@ int cx88_set_tvnorm(struct cx88_core *core, struct v4l2_tvnorm *norm)
 	set_tvaudio(core);
 
 	// tell i2c chips
-	cx88_call_i2c_clients(core,VIDIOC_S_STD,&norm->id);
+	cx88_call_i2c_clients(core,VIDIOC_S_STD,&norm);
 
 	// done
 	return 0;

drivers/media/video/cx88/cx88-vbi.c

@@ -33,13 +33,13 @@ int cx8800_vbi_fmt (struct file *file, void *priv,
 	f->fmt.vbi.count[0] = VBI_LINE_COUNT;
 	f->fmt.vbi.count[1] = VBI_LINE_COUNT;
 
-	if (dev->core->tvnorm->id & V4L2_STD_525_60) {
+	if (dev->core->tvnorm & V4L2_STD_525_60) {
 		/* ntsc */
 		f->fmt.vbi.sampling_rate = 28636363;
 		f->fmt.vbi.start[0] = 10;
 		f->fmt.vbi.start[1] = 273;
 
-	} else if (dev->core->tvnorm->id & V4L2_STD_625_50) {
+	} else if (dev->core->tvnorm & V4L2_STD_625_50) {
 		/* pal */
 		f->fmt.vbi.sampling_rate = 35468950;
 		f->fmt.vbi.start[0] = 7 -1;

drivers/media/video/cx88/cx88-video.c

@@ -86,56 +86,7 @@ static LIST_HEAD(cx8800_devlist);
 /* ------------------------------------------------------------------- */
 /* static data                                                         */
 
-struct v4l2_tvnorm cx88_tvnorms[] = {
-	{
-		.name      = "NTSC-M",
-		.id        = V4L2_STD_NTSC_M,
-	},{
-		.name      = "NTSC-JP",
-		.id        = V4L2_STD_NTSC_M_JP,
-	},{
-		.name      = "NTSC-4.43",
-		.id        = V4L2_STD_NTSC_443,
-	},{
-		.name      = "PAL-BG",
-		.id        = V4L2_STD_PAL_BG,
-	},{
-		.name      = "PAL-DK",
-		.id        = V4L2_STD_PAL_DK,
-	},{
-		.name      = "PAL-I",
-		.id        = V4L2_STD_PAL_I,
-	},{
-		.name      = "PAL-M",
-		.id        = V4L2_STD_PAL_M,
-	},{
-		.name      = "PAL-N",
-		.id        = V4L2_STD_PAL_N,
-	},{
-		.name      = "PAL-Nc",
-		.id        = V4L2_STD_PAL_Nc,
-	},{
-		.name      = "PAL-60",
-		.id        = V4L2_STD_PAL_60,
-	},{
-		.name      = "SECAM-L",
-		.id        = V4L2_STD_SECAM_L,
-	},{
-		.name      = "SECAM-DK",
-		.id        = V4L2_STD_SECAM_DK,
-	}
-};
-EXPORT_SYMBOL(cx88_tvnorms);
-
-unsigned int cx88_tvnormsize=ARRAY_SIZE(cx88_tvnorms);
-EXPORT_SYMBOL(cx88_tvnormsize);
-
-static struct v4l2_tvnorm radionorms[] = {
-	{
-		.name      = "RADIO",
-		.id        = 0,
-	}
-};
+v4l2_std_id radionorms[] = { 0 };
 
 static struct cx8800_fmt formats[] = {
 	{
@@ -999,7 +950,7 @@ int cx88_set_control(struct cx88_core *core, struct v4l2_control *ctl)
 
 		value = ((ctl->value - c->off) << c->shift) & c->mask;
 
-		if (core->tvnorm->id & V4L2_STD_SECAM) {
+		if (core->tvnorm & V4L2_STD_SECAM) {
 			/* For SECAM, both U and V sat should be equal */
 			value=value<<8|value;
 		} else {
@@ -1242,13 +1193,14 @@ static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 	return 0;
 }
 
-static int vidioc_s_std (struct file *file, void *priv, unsigned int i)
+static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *tvnorms)
 {
 	struct cx88_core  *core = ((struct cx8800_fh *)priv)->dev->core;
 
 	mutex_lock(&core->lock);
-	cx88_set_tvnorm(core,&cx88_tvnorms[i]);
+	cx88_set_tvnorm(core,*tvnorms);
 	mutex_unlock(&core->lock);
+
 	return 0;
 }
 
@@ -1280,8 +1232,7 @@ int cx88_enum_input (struct cx88_core  *core,struct v4l2_input *i)
 	if ((CX88_VMUX_TELEVISION == INPUT(n)->type) ||
 		(CX88_VMUX_CABLE      == INPUT(n)->type))
 		i->type = V4L2_INPUT_TYPE_TUNER;
-	for (n = 0; n < ARRAY_SIZE(cx88_tvnorms); n++)
-		i->std |= cx88_tvnorms[n].id;
+		i->std = CX88_NORMS;
 	return 0;
 }
 EXPORT_SYMBOL(cx88_enum_input);
@@ -1703,8 +1654,8 @@ static struct video_device cx8800_video_template =
 	.vidioc_s_tuner       = vidioc_s_tuner,
 	.vidioc_g_frequency   = vidioc_g_frequency,
 	.vidioc_s_frequency   = vidioc_s_frequency,
-	.tvnorms              = cx88_tvnorms,
-	.tvnormsize           = ARRAY_SIZE(cx88_tvnorms),
+	.tvnorms              = CX88_NORMS,
+	.current_norm         = V4L2_STD_PAL_BG,
 };
 
 static const struct file_operations radio_fops =
@@ -1736,8 +1687,6 @@ static struct video_device cx8800_radio_template =
 	.vidioc_s_ctrl        = vidioc_s_ctrl,
 	.vidioc_g_frequency   = vidioc_g_frequency,
 	.vidioc_s_frequency   = vidioc_s_frequency,
-	.tvnorms              = radionorms,
-	.tvnormsize           = ARRAY_SIZE(radionorms),
 };
 
 /* ----------------------------------------------------------- */
@@ -1815,7 +1764,7 @@ static int __devinit cx8800_initdev(struct pci_dev *pci_dev,
 
 	/* initialize driver struct */
 	spin_lock_init(&dev->slock);
-	core->tvnorm = cx88_tvnorms;
+	core->tvnorm = cx8800_video_template.current_norm;
 
 	/* init video dma queues */
 	INIT_LIST_HEAD(&dev->vidq.active);
@@ -1896,7 +1845,7 @@ static int __devinit cx8800_initdev(struct pci_dev *pci_dev,
 
 	/* initial device configuration */
 	mutex_lock(&core->lock);
-	cx88_set_tvnorm(core,cx88_tvnorms);
+	cx88_set_tvnorm(core,core->tvnorm);
 	init_controls(core);
 	cx88_video_mux(core,0);
 	mutex_unlock(&core->lock);

drivers/media/video/cx88/cx88.h

@@ -50,6 +50,13 @@
 /* ----------------------------------------------------------- */
 /* defines and enums                                           */
 
+/* Currently unsupported by the driver: PAL/H, NTSC/Kr, SECAM B/G/H/LC */
+#define CX88_NORMS (\
+	V4L2_STD_NTSC_M|  V4L2_STD_NTSC_M_JP|  V4L2_STD_NTSC_443 | \
+	V4L2_STD_PAL_BG|  V4L2_STD_PAL_DK   |  V4L2_STD_PAL_I    | \
+	V4L2_STD_PAL_M |  V4L2_STD_PAL_N    |  V4L2_STD_PAL_Nc   | \
+	V4L2_STD_PAL_60|  V4L2_STD_SECAM_L  |  V4L2_STD_SECAM_DK )
+
 #define FORMAT_FLAGS_PACKED       0x01
 #define FORMAT_FLAGS_PLANAR       0x02
 
@@ -82,15 +89,15 @@ enum cx8802_board_access {
 /* ----------------------------------------------------------- */
 /* tv norms                                                    */
 
-static unsigned int inline norm_maxw(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_maxw(v4l2_std_id norm)
 {
-	return (norm->id & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 720 : 768;
+	return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 720 : 768;
 }
 
 
-static unsigned int inline norm_maxh(struct v4l2_tvnorm *norm)
+static unsigned int inline norm_maxh(v4l2_std_id norm)
 {
-	return (norm->id & V4L2_STD_625_50) ? 576 : 480;
+	return (norm & V4L2_STD_625_50) ? 576 : 480;
 }
 
 /* ----------------------------------------------------------- */
@@ -312,7 +319,7 @@ struct cx88_core {
 
 	/* state info */
 	struct task_struct         *kthread;
-	struct v4l2_tvnorm         *tvnorm;
+	v4l2_std_id                tvnorm;
 	u32                        tvaudio;
 	u32                        audiomode_manual;
 	u32                        audiomode_current;
@@ -529,7 +536,7 @@ extern void cx88_sram_channel_dump(struct cx88_core *core,
 
 extern int cx88_set_scale(struct cx88_core *core, unsigned int width,
 			  unsigned int height, enum v4l2_field field);
-extern int cx88_set_tvnorm(struct cx88_core *core, struct v4l2_tvnorm *norm);
+extern int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm);
 
 extern struct video_device *cx88_vdev_init(struct cx88_core *core,
 					   struct pci_dev *pci,
@@ -630,8 +637,6 @@ int cx8802_resume_common(struct pci_dev *pci_dev);
 
 /* ----------------------------------------------------------- */
 /* cx88-video.c*/
-extern unsigned int cx88_tvnormsize;
-extern struct v4l2_tvnorm cx88_tvnorms[];
 extern const u32 cx88_user_ctrls[];
 extern int cx8800_ctrl_query(struct v4l2_queryctrl *qctrl);
 int cx88_enum_input (struct cx88_core  *core,struct v4l2_input *i);