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[PATCH v2 2/6] soc: mediatek: pwrap: Move PMIC read test sequence in function

AngeloGioacchino Del Regno posted 6 patches 1 year, 6 months ago
There is a newer version of this series
[PATCH v2 2/6] soc: mediatek: pwrap: Move PMIC read test sequence in function
Posted by AngeloGioacchino Del Regno 1 year, 6 months ago 
The PMIC read test is performed in two places: pwrap_init_dual_io()
and pwrap_init_sidly().
In preparation for adding support for PMICs requiring a companion
part, move this sequence to a new function pwrap_pmic_read_test().

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 32 +++++++++++++++++-----------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 15789a03e6c6..5c500be48f7c 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1455,6 +1455,18 @@ static int pwrap_regmap_write(void *context, u32 adr, u32 wdata)
 	return pwrap_write(context, adr, wdata);
 }
 
+static bool pwrap_pmic_read_test(struct pmic_wrapper *wrp, const u32 *dew_regs,
+				 u16 read_test_val)
+{
+	bool is_success;
+	u32 rdata;
+
+	pwrap_read(wrp, dew_regs[PWRAP_DEW_READ_TEST], &rdata);
+	is_success = ((rdata & U16_MAX) == read_test_val);
+
+	return is_success;
+}
+
 static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
 {
 	bool tmp;
@@ -1498,18 +1510,18 @@ static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
  */
 static int pwrap_init_sidly(struct pmic_wrapper *wrp)
 {
-	u32 rdata;
 	u32 i;
 	u32 pass = 0;
+	bool read_ok;
 	signed char dly[16] = {
 		-1, 0, 1, 0, 2, -1, 1, 1, 3, -1, -1, -1, 3, -1, 2, 1
 	};
 
 	for (i = 0; i < 4; i++) {
 		pwrap_writel(wrp, i, PWRAP_SIDLY);
-		pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST],
-			   &rdata);
-		if (rdata == PWRAP_DEW_READ_TEST_VAL) {
+		read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs,
+					       PWRAP_DEW_READ_TEST_VAL);
+		if (read_ok) {
 			dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i);
 			pass |= 1 << i;
 		}
@@ -1529,8 +1541,7 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp)
 static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 {
 	int ret;
-	bool tmp;
-	u32 rdata;
+	bool read_ok, tmp;
 
 	/* Enable dual IO mode */
 	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
@@ -1546,12 +1557,9 @@ static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 	pwrap_writel(wrp, 1, PWRAP_DIO_EN);
 
 	/* Read Test */
-	pwrap_read(wrp,
-		   wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
-	if (rdata != PWRAP_DEW_READ_TEST_VAL) {
-		dev_err(wrp->dev,
-			"Read failed on DIO mode: 0x%04x!=0x%04x\n",
-			PWRAP_DEW_READ_TEST_VAL, rdata);
+	read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs, PWRAP_DEW_READ_TEST_VAL);
+	if (!read_ok) {
+		dev_err(wrp->dev, "Read failed on DIO mode.\n");
 		return -EFAULT;
 	}
 
-- 
2.40.0
Re: [PATCH v2 2/6] soc: mediatek: pwrap: Move PMIC read test sequence in function
Posted by Alexandre Mergnat 1 year, 5 months ago 
Le ven. 24 mars 2023 à 10:42, AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> a écrit :
>
> The PMIC read test is performed in two places: pwrap_init_dual_io()
> and pwrap_init_sidly().
> In preparation for adding support for PMICs requiring a companion
> part, move this sequence to a new function pwrap_pmic_read_test().
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  drivers/soc/mediatek/mtk-pmic-wrap.c | 32 +++++++++++++++++-----------
>  1 file changed, 20 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
> index 15789a03e6c6..5c500be48f7c 100644
> --- a/drivers/soc/mediatek/mtk-pmic-wrap.c
> +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
> @@ -1455,6 +1455,18 @@ static int pwrap_regmap_write(void *context, u32 adr, u32 wdata)
>         return pwrap_write(context, adr, wdata);
>  }
>
> +static bool pwrap_pmic_read_test(struct pmic_wrapper *wrp, const u32 *dew_regs,
> +                                u16 read_test_val)
> +{
> +       bool is_success;
> +       u32 rdata;
> +
> +       pwrap_read(wrp, dew_regs[PWRAP_DEW_READ_TEST], &rdata);
> +       is_success = ((rdata & U16_MAX) == read_test_val);
> +
> +       return is_success;
> +}
> +
>  static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
>  {
>         bool tmp;
> @@ -1498,18 +1510,18 @@ static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
>   */
>  static int pwrap_init_sidly(struct pmic_wrapper *wrp)
>  {
> -       u32 rdata;
>         u32 i;
>         u32 pass = 0;
> +       bool read_ok;
>         signed char dly[16] = {
>                 -1, 0, 1, 0, 2, -1, 1, 1, 3, -1, -1, -1, 3, -1, 2, 1
>         };
>
>         for (i = 0; i < 4; i++) {
>                 pwrap_writel(wrp, i, PWRAP_SIDLY);
> -               pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST],
> -                          &rdata);
> -               if (rdata == PWRAP_DEW_READ_TEST_VAL) {
> +               read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs,
> +                                              PWRAP_DEW_READ_TEST_VAL);
> +               if (read_ok) {
>                         dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i);
>                         pass |= 1 << i;
>                 }
> @@ -1529,8 +1541,7 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp)
>  static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
>  {
>         int ret;
> -       bool tmp;
> -       u32 rdata;
> +       bool read_ok, tmp;
>
>         /* Enable dual IO mode */
>         pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
> @@ -1546,12 +1557,9 @@ static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
>         pwrap_writel(wrp, 1, PWRAP_DIO_EN);
>
>         /* Read Test */
> -       pwrap_read(wrp,
> -                  wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
> -       if (rdata != PWRAP_DEW_READ_TEST_VAL) {
> -               dev_err(wrp->dev,
> -                       "Read failed on DIO mode: 0x%04x!=0x%04x\n",
> -                       PWRAP_DEW_READ_TEST_VAL, rdata);
> +       read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs, PWRAP_DEW_READ_TEST_VAL);
> +       if (!read_ok) {
> +               dev_err(wrp->dev, "Read failed on DIO mode.\n");
>                 return -EFAULT;
>         }

Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>

Regards,
Alexandre

Patchew 2.1-devel-b67e4c2

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