V4L/DVB (11369): v4l2-subdev: add load_fw and use that instead of abusing core->init.

The init callback was used in several places to load firmware. Make a separate
load_fw callback for that. This makes the code a lot more understandable.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 32 insertions, 37 deletions

diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c
index f4dd9d78eb3..0c58e55fdbe 100644
--- a/drivers/media/video/cx18/cx18-av-core.c
+++ b/drivers/media/video/cx18/cx18-av-core.c
@@ -203,43 +203,42 @@ static int cx18_av_reset(struct v4l2_subdev *sd, u32 val)
 
 static int cx18_av_init(struct v4l2_subdev *sd, u32 val)
 {
-	struct cx18_av_state *state = to_cx18_av_state(sd);
 	struct cx18 *cx = v4l2_get_subdevdata(sd);
 
-	switch (val) {
-	case CX18_AV_INIT_PLLS:
-		/*
-		 * The crystal freq used in calculations in this driver will be
-		 * 28.636360 MHz.
-		 * Aim to run the PLLs' VCOs near 400 MHz to minimze errors.
-		 */
+	/*
+	 * The crystal freq used in calculations in this driver will be
+	 * 28.636360 MHz.
+	 * Aim to run the PLLs' VCOs near 400 MHz to minimze errors.
+	 */
 
-		/*
-		 * VDCLK  Integer = 0x0f, Post Divider = 0x04
-		 * AIMCLK Integer = 0x0e, Post Divider = 0x16
-		 */
-		cx18_av_write4(cx, CXADEC_PLL_CTRL1, 0x160e040f);
+	/*
+	 * VDCLK  Integer = 0x0f, Post Divider = 0x04
+	 * AIMCLK Integer = 0x0e, Post Divider = 0x16
+	 */
+	cx18_av_write4(cx, CXADEC_PLL_CTRL1, 0x160e040f);
 
-		/* VDCLK Fraction = 0x2be2fe */
-		/* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz before post divide */
-		cx18_av_write4(cx, CXADEC_VID_PLL_FRAC, 0x002be2fe);
+	/* VDCLK Fraction = 0x2be2fe */
+	/* xtal * 0xf.15f17f0/4 = 108 MHz: 432 MHz before post divide */
+	cx18_av_write4(cx, CXADEC_VID_PLL_FRAC, 0x002be2fe);
 
-		/* AIMCLK Fraction = 0x05227ad */
-		/* xtal * 0xe.2913d68/0x16 = 48000 * 384: 406 MHz pre post-div*/
-		cx18_av_write4(cx, CXADEC_AUX_PLL_FRAC, 0x005227ad);
+	/* AIMCLK Fraction = 0x05227ad */
+	/* xtal * 0xe.2913d68/0x16 = 48000 * 384: 406 MHz pre post-div*/
+	cx18_av_write4(cx, CXADEC_AUX_PLL_FRAC, 0x005227ad);
 
-		/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x16 */
-		cx18_av_write(cx, CXADEC_I2S_MCLK, 0x56);
-		break;
+	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x16 */
+	cx18_av_write(cx, CXADEC_I2S_MCLK, 0x56);
+	return 0;
+}
 
-	case CX18_AV_INIT_NORMAL:
-	default:
-		if (!state->is_initialized) {
-			/* initialize on first use */
-			state->is_initialized = 1;
-			cx18_av_initialize(cx);
-		}
-		break;
+static int cx18_av_load_fw(struct v4l2_subdev *sd)
+{
+	struct cx18_av_state *state = to_cx18_av_state(sd);
+	struct cx18 *cx = v4l2_get_subdevdata(sd);
+
+	if (!state->is_initialized) {
+		/* initialize on first use */
+		state->is_initialized = 1;
+		cx18_av_initialize(cx);
 	}
 	return 0;
 }
@@ -1185,6 +1184,7 @@ static const struct v4l2_subdev_core_ops cx18_av_general_ops = {
 	.g_chip_ident = cx18_av_g_chip_ident,
 	.log_status = cx18_av_log_status,
 	.init = cx18_av_init,
+	.load_fw = cx18_av_load_fw,
 	.reset = cx18_av_reset,
 	.queryctrl = cx18_av_queryctrl,
 	.g_ctrl = cx18_av_g_ctrl,
diff --git a/drivers/media/video/cx18/cx18-av-core.h b/drivers/media/video/cx18/cx18-av-core.h
index c458120e8c9..9b84a0c58e0 100644
--- a/drivers/media/video/cx18/cx18-av-core.h
+++ b/drivers/media/video/cx18/cx18-av-core.h
@@ -328,11 +328,6 @@ static inline struct cx18_av_state *to_cx18_av_state(struct v4l2_subdev *sd)
 	return container_of(sd, struct cx18_av_state, sd);
 }
 
-enum cx18_av_subdev_init_arg {
-	CX18_AV_INIT_NORMAL = 0,
-	CX18_AV_INIT_PLLS = 1,
-};
-
 /* ----------------------------------------------------------------------- */
 /* cx18_av-core.c 							   */
 int cx18_av_write(struct cx18 *cx, u16 addr, u8 value);
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 210c68aaae0..49b1c3d7b1a 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -810,7 +810,7 @@ static int __devinit cx18_probe(struct pci_dev *pci_dev,
 		CX18_ERR("Could not register A/V decoder subdevice\n");
 		goto free_map;
 	}
-	cx18_call_hw(cx, CX18_HW_418_AV, core, init, (u32) CX18_AV_INIT_PLLS);
+	cx18_call_hw(cx, CX18_HW_418_AV, core, init, 0);
 
 	/* Initialize GPIO Reset Controller to do chip resets during i2c init */
 	if (cx->card->hw_all & CX18_HW_GPIO_RESET_CTRL) {
@@ -1028,7 +1028,7 @@ int cx18_init_on_first_open(struct cx18 *cx)
 	cx18_vapi(cx, CX18_APU_STOP, 1, CX18_APU_ENCODING_METHOD_MPEG);
 
 	/* Init the A/V decoder, if it hasn't been already */
-	v4l2_subdev_call(cx->sd_av, core, init, (u32) CX18_AV_INIT_NORMAL);
+	v4l2_subdev_call(cx->sd_av, core, load_fw);
 
 	vf.tuner = 0;
 	vf.type = V4L2_TUNER_ANALOG_TV;