diff mbox series

[v2,16/19] media: ti-vpe: cal: move code to separate functions

Message ID 20200319075023.22151-17-tomi.valkeinen@ti.com (mailing list archive)
State Superseded, archived
Delegated to: Hans Verkuil
Headers
Series CAL fixes and improvements |

Commit Message

Tomi Valkeinen March 19, 2020, 7:50 a.m. UTC 
  To make csi2_wait_for_phy() more readable, move code to separate
functions.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 drivers/media/platform/ti-vpe/cal.c | 38 ++++++++++++++++++++---------
 1 file changed, 26 insertions(+), 12 deletions(-)

Comments

Benoit Parrot March 19, 2020, 10:45 p.m. UTC | #1 
Tomi,

Thanks for the patch.

On 3/19/20 2:50 AM, Tomi Valkeinen wrote:
> To make csi2_wait_for_phy() more readable, move code to separate
> functions.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
> Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

Reviewed-by: Benoit Parrot <bparrot@ti.com>

> ---
>  drivers/media/platform/ti-vpe/cal.c | 38 ++++++++++++++++++++---------
>  1 file changed, 26 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
> index b1b9616b12b6..ed68ad58121e 100644
> --- a/drivers/media/platform/ti-vpe/cal.c
> +++ b/drivers/media/platform/ti-vpe/cal.c
> @@ -823,20 +823,10 @@ static void csi2_phy_init(struct cal_ctx *ctx)
>  	csi2_cio_power(ctx, true);
>  }
>  
> -static void csi2_wait_for_phy(struct cal_ctx *ctx)
> +static void csi2_wait_complexio_reset(struct cal_ctx *ctx)
>  {
>  	int i;
>  
> -	/* Steps
> -	 *  2. Wait for completion of reset
> -	 *          Note if the external sensor is not sending byte clock,
> -	 *          the reset will timeout
> -	 *  4.Force FORCERXMODE
> -	 *      G. Wait for all enabled lane to reach stop state
> -	 *      H. Disable pull down using pad control
> -	 */
> -
> -	/* 2. Wait for reset completion */
>  	for (i = 0; i < 250; i++) {
>  		if (reg_read_field(ctx->dev,
>  				   CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port),
> @@ -855,7 +845,12 @@ static void csi2_wait_for_phy(struct cal_ctx *ctx)
>  			   CAL_CSI2_COMPLEXIO_CFG_RESET_DONE_RESETCOMPLETED)
>  		ctx_err(ctx, "Timeout waiting for Complex IO reset done\n");
>  
> -	/* 4. G. Wait for all enabled lane to reach stop state */
> +}
> +
> +static void csi2_wait_stop_state(struct cal_ctx *ctx)
> +{
> +	int i;
> +
>  	for (i = 0; i < 10; i++) {
>  		if (reg_read_field(ctx->dev,
>  				   CAL_CSI2_TIMING(ctx->csi2_port),
> @@ -867,9 +862,28 @@ static void csi2_wait_for_phy(struct cal_ctx *ctx)
>  		ctx->csi2_port,
>  		reg_read(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port)),
>  		(i >= 10) ? "(timeout)" : "");
> +
>  	if (reg_read_field(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port),
>  			   CAL_CSI2_TIMING_FORCE_RX_MODE_IO1_MASK) != 0)
>  		ctx_err(ctx, "Timeout waiting for stop state\n");
> +}
> +
> +static void csi2_wait_for_phy(struct cal_ctx *ctx)
> +{
> +	/* Steps
> +	 *  2. Wait for completion of reset
> +	 *          Note if the external sensor is not sending byte clock,
> +	 *          the reset will timeout
> +	 *  4.Force FORCERXMODE
> +	 *      G. Wait for all enabled lane to reach stop state
> +	 *      H. Disable pull down using pad control
> +	 */
> +
> +	/* 2. Wait for reset completion */
> +	csi2_wait_complexio_reset(ctx);
> +
> +	/* 4. G. Wait for all enabled lane to reach stop state */
> +	csi2_wait_stop_state(ctx);
>  
>  	ctx_dbg(1, ctx, "CSI2_%d_REG1 = 0x%08x (Bit(31,28) should be set!)\n",
>  		(ctx->csi2_port - 1), reg_read(ctx->cc, CAL_CSI2_PHY_REG1));
>
diff mbox series

Patch

diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index b1b9616b12b6..ed68ad58121e 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -823,20 +823,10 @@  static void csi2_phy_init(struct cal_ctx *ctx)
 	csi2_cio_power(ctx, true);
 }
 
-static void csi2_wait_for_phy(struct cal_ctx *ctx)
+static void csi2_wait_complexio_reset(struct cal_ctx *ctx)
 {
 	int i;
 
-	/* Steps
-	 *  2. Wait for completion of reset
-	 *          Note if the external sensor is not sending byte clock,
-	 *          the reset will timeout
-	 *  4.Force FORCERXMODE
-	 *      G. Wait for all enabled lane to reach stop state
-	 *      H. Disable pull down using pad control
-	 */
-
-	/* 2. Wait for reset completion */
 	for (i = 0; i < 250; i++) {
 		if (reg_read_field(ctx->dev,
 				   CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port),
@@ -855,7 +845,12 @@  static void csi2_wait_for_phy(struct cal_ctx *ctx)
 			   CAL_CSI2_COMPLEXIO_CFG_RESET_DONE_RESETCOMPLETED)
 		ctx_err(ctx, "Timeout waiting for Complex IO reset done\n");
 
-	/* 4. G. Wait for all enabled lane to reach stop state */
+}
+
+static void csi2_wait_stop_state(struct cal_ctx *ctx)
+{
+	int i;
+
 	for (i = 0; i < 10; i++) {
 		if (reg_read_field(ctx->dev,
 				   CAL_CSI2_TIMING(ctx->csi2_port),
@@ -867,9 +862,28 @@  static void csi2_wait_for_phy(struct cal_ctx *ctx)
 		ctx->csi2_port,
 		reg_read(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port)),
 		(i >= 10) ? "(timeout)" : "");
+
 	if (reg_read_field(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port),
 			   CAL_CSI2_TIMING_FORCE_RX_MODE_IO1_MASK) != 0)
 		ctx_err(ctx, "Timeout waiting for stop state\n");
+}
+
+static void csi2_wait_for_phy(struct cal_ctx *ctx)
+{
+	/* Steps
+	 *  2. Wait for completion of reset
+	 *          Note if the external sensor is not sending byte clock,
+	 *          the reset will timeout
+	 *  4.Force FORCERXMODE
+	 *      G. Wait for all enabled lane to reach stop state
+	 *      H. Disable pull down using pad control
+	 */
+
+	/* 2. Wait for reset completion */
+	csi2_wait_complexio_reset(ctx);
+
+	/* 4. G. Wait for all enabled lane to reach stop state */
+	csi2_wait_stop_state(ctx);
 
 	ctx_dbg(1, ctx, "CSI2_%d_REG1 = 0x%08x (Bit(31,28) should be set!)\n",
 		(ctx->csi2_port - 1), reg_read(ctx->cc, CAL_CSI2_PHY_REG1));