diff mbox series

[v3,2/5] phy: qcom: edp: Introduce aux_cfg array for version specific aux settings

Message ID 20240923113150.24711-3-quic_mukhopad@quicinc.com (mailing list archive)
State New, archived
Headers show
Series Add support for DisplayPort on SA8775P platform | expand

Commit Message

Soutrik Mukhopadhyay Sept. 23, 2024, 11:31 a.m. UTC 
In order to support different HW versions, introduce aux_cfg array
to move v4 specific aux configuration settings.

Signed-off-by: Soutrik Mukhopadhyay <quic_mukhopad@quicinc.com>
---
v2: Fixed review comments from Bjorn and Dmitry
	- Made aux_cfg array as const.

v3: Fixed review comments from Dmitry
	- Used a for loop to write the dp_phy_aux_cfg registers.
	- Pre-defined the aux_cfg size to prevent any magic numbers.

---
 drivers/phy/qualcomm/phy-qcom-edp.c | 41 ++++++++++++-----------------
 1 file changed, 17 insertions(+), 24 deletions(-)

Comments

Dmitry Baryshkov Sept. 23, 2024, 11:44 a.m. UTC | #1 
On Mon, Sep 23, 2024 at 05:01:47PM GMT, Soutrik Mukhopadhyay wrote:
> In order to support different HW versions, introduce aux_cfg array
> to move v4 specific aux configuration settings.
> 
> Signed-off-by: Soutrik Mukhopadhyay <quic_mukhopad@quicinc.com>
> ---
> v2: Fixed review comments from Bjorn and Dmitry
> 	- Made aux_cfg array as const.
> 
> v3: Fixed review comments from Dmitry
> 	- Used a for loop to write the dp_phy_aux_cfg registers.
> 	- Pre-defined the aux_cfg size to prevent any magic numbers.
> 
> ---
>  drivers/phy/qualcomm/phy-qcom-edp.c | 41 ++++++++++++-----------------
>  1 file changed, 17 insertions(+), 24 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
index da2b32fb5b45..2ecff164ec44 100644
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -32,16 +32,8 @@ 
 #define DP_PHY_PD_CTL                           0x001c
 #define DP_PHY_MODE                             0x0020
 
-#define DP_PHY_AUX_CFG0				0x0024
-#define DP_PHY_AUX_CFG1				0x0028
-#define DP_PHY_AUX_CFG2				0x002C
-#define DP_PHY_AUX_CFG3				0x0030
-#define DP_PHY_AUX_CFG4				0x0034
-#define DP_PHY_AUX_CFG5				0x0038
-#define DP_PHY_AUX_CFG6				0x003C
-#define DP_PHY_AUX_CFG7				0x0040
-#define DP_PHY_AUX_CFG8				0x0044
-#define DP_PHY_AUX_CFG9				0x0048
+#define DP_AUX_CFG_SIZE                         10
+#define DP_PHY_AUX_CFG(n)                       (0x24 + (0x04 * (n)))
 
 #define DP_PHY_AUX_INTERRUPT_MASK		0x0058
 
@@ -90,6 +82,7 @@  struct phy_ver_ops {
 
 struct qcom_edp_phy_cfg {
 	bool is_edp;
+	const u8 *aux_cfg;
 	const struct qcom_edp_swing_pre_emph_cfg *swing_pre_emph_cfg;
 	const struct phy_ver_ops *ver_ops;
 };
@@ -186,11 +179,15 @@  static const struct qcom_edp_swing_pre_emph_cfg edp_phy_swing_pre_emph_cfg = {
 	.pre_emphasis_hbr3_hbr2 = &edp_pre_emp_hbr2_hbr3,
 };
 
+static const u8 edp_phy_aux_cfg_v4[10] = {
+	0x00, 0x13, 0x24, 0x00, 0x0a, 0x26, 0x0a, 0x03, 0x37, 0x03
+};
+
 static int qcom_edp_phy_init(struct phy *phy)
 {
 	struct qcom_edp *edp = phy_get_drvdata(phy);
+	u8 aux_cfg[DP_AUX_CFG_SIZE];
 	int ret;
-	u8 cfg8;
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies);
 	if (ret)
@@ -200,6 +197,8 @@  static int qcom_edp_phy_init(struct phy *phy)
 	if (ret)
 		goto out_disable_supplies;
 
+	memcpy(aux_cfg, edp->cfg->aux_cfg, sizeof(aux_cfg));
+
 	writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN |
 	       DP_PHY_PD_CTL_PLL_PWRDN | DP_PHY_PD_CTL_DP_CLAMP_EN,
 	       edp->edp + DP_PHY_PD_CTL);
@@ -222,22 +221,12 @@  static int qcom_edp_phy_init(struct phy *phy)
 	 * even needed.
 	 */
 	if (edp->cfg->swing_pre_emph_cfg && !edp->is_edp)
-		cfg8 = 0xb7;
-	else
-		cfg8 = 0x37;
+		aux_cfg[8] = 0xb7;
 
 	writel(0xfc, edp->edp + DP_PHY_MODE);
 
-	writel(0x00, edp->edp + DP_PHY_AUX_CFG0);
-	writel(0x13, edp->edp + DP_PHY_AUX_CFG1);
-	writel(0x24, edp->edp + DP_PHY_AUX_CFG2);
-	writel(0x00, edp->edp + DP_PHY_AUX_CFG3);
-	writel(0x0a, edp->edp + DP_PHY_AUX_CFG4);
-	writel(0x26, edp->edp + DP_PHY_AUX_CFG5);
-	writel(0x0a, edp->edp + DP_PHY_AUX_CFG6);
-	writel(0x03, edp->edp + DP_PHY_AUX_CFG7);
-	writel(cfg8, edp->edp + DP_PHY_AUX_CFG8);
-	writel(0x03, edp->edp + DP_PHY_AUX_CFG9);
+	for (int i = 0; i < DP_AUX_CFG_SIZE; i++)
+		writel(aux_cfg[i], edp->edp + DP_PHY_AUX_CFG(i));
 
 	writel(PHY_AUX_STOP_ERR_MASK | PHY_AUX_DEC_ERR_MASK |
 	       PHY_AUX_SYNC_ERR_MASK | PHY_AUX_ALIGN_ERR_MASK |
@@ -519,16 +508,19 @@  static const struct phy_ver_ops qcom_edp_phy_ops_v4 = {
 };
 
 static const struct qcom_edp_phy_cfg sc7280_dp_phy_cfg = {
+	.aux_cfg = edp_phy_aux_cfg_v4,
 	.ver_ops = &qcom_edp_phy_ops_v4,
 };
 
 static const struct qcom_edp_phy_cfg sc8280xp_dp_phy_cfg = {
+	.aux_cfg = edp_phy_aux_cfg_v4,
 	.swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg,
 	.ver_ops = &qcom_edp_phy_ops_v4,
 };
 
 static const struct qcom_edp_phy_cfg sc8280xp_edp_phy_cfg = {
 	.is_edp = true,
+	.aux_cfg = edp_phy_aux_cfg_v4,
 	.swing_pre_emph_cfg = &edp_phy_swing_pre_emph_cfg,
 	.ver_ops = &qcom_edp_phy_ops_v4,
 };
@@ -707,6 +699,7 @@  static const struct phy_ver_ops qcom_edp_phy_ops_v6 = {
 };
 
 static struct qcom_edp_phy_cfg x1e80100_phy_cfg = {
+	.aux_cfg = edp_phy_aux_cfg_v4,
 	.swing_pre_emph_cfg = &dp_phy_swing_pre_emph_cfg,
 	.ver_ops = &qcom_edp_phy_ops_v6,
 };