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Message-ID: <20240828024813.1353572-1-aford173@gmail.com>
Date: Tue, 27 Aug 2024 21:48:01 -0500
From: Adam Ford <aford173@...il.com>
To: linux-phy@...ts.infradead.org
Cc: dominique.martinet@...ark-techno.com,
linux-imx@....com,
festevam@...il.com,
frieder.schrempf@...tron.de,
aford@...conembedded.com,
Adam Ford <aford173@...il.com>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
Marco Felsch <m.felsch@...gutronix.de>,
Lucas Stach <l.stach@...gutronix.de>,
linux-kernel@...r.kernel.org
Subject: [RFC 1/2] phy: freescale: fsl-samsung-hdmi: Replace register defines with macro
There are 47 registers defined as PHY_REG_xx were xx goes from 00 to
47. Simplify this by replacing them all with a macro which is passed
the register number to return the proper register offset.
Signed-off-by: Adam Ford <aford173@...il.com>
diff --git a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
index 9048cdc760c2..bc5d3625ece6 100644
--- a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
+++ b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
@@ -14,76 +14,20 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
-#define PHY_REG_00 0x00
-#define PHY_REG_01 0x04
-#define PHY_REG_02 0x08
-#define PHY_REG_08 0x20
-#define PHY_REG_09 0x24
-#define PHY_REG_10 0x28
-#define PHY_REG_11 0x2c
-
-#define PHY_REG_12 0x30
-#define REG12_CK_DIV_MASK GENMASK(5, 4)
-
-#define PHY_REG_13 0x34
-#define REG13_TG_CODE_LOW_MASK GENMASK(7, 0)
-
-#define PHY_REG_14 0x38
-#define REG14_TOL_MASK GENMASK(7, 4)
-#define REG14_RP_CODE_MASK GENMASK(3, 1)
-#define REG14_TG_CODE_HIGH_MASK GENMASK(0, 0)
-
-#define PHY_REG_15 0x3c
-#define PHY_REG_16 0x40
-#define PHY_REG_17 0x44
-#define PHY_REG_18 0x48
-#define PHY_REG_19 0x4c
-#define PHY_REG_20 0x50
-
-#define PHY_REG_21 0x54
-#define REG21_SEL_TX_CK_INV BIT(7)
-#define REG21_PMS_S_MASK GENMASK(3, 0)
-
-#define PHY_REG_22 0x58
-#define PHY_REG_23 0x5c
-#define PHY_REG_24 0x60
-#define PHY_REG_25 0x64
-#define PHY_REG_26 0x68
-#define PHY_REG_27 0x6c
-#define PHY_REG_28 0x70
-#define PHY_REG_29 0x74
-#define PHY_REG_30 0x78
-#define PHY_REG_31 0x7c
-#define PHY_REG_32 0x80
-
-/*
- * REG33 does not match the ref manual. According to Sandor Yu from NXP,
- * "There is a doc issue on the i.MX8MP latest RM"
- * REG33 is being used per guidance from Sandor
- */
-
-#define PHY_REG_33 0x84
-#define REG33_MODE_SET_DONE BIT(7)
-#define REG33_FIX_DA BIT(1)
-
-#define PHY_REG_34 0x88
-#define REG34_PHY_READY BIT(7)
-#define REG34_PLL_LOCK BIT(6)
-#define REG34_PHY_CLK_READY BIT(5)
-
-#define PHY_REG_35 0x8c
-#define PHY_REG_36 0x90
-#define PHY_REG_37 0x94
-#define PHY_REG_38 0x98
-#define PHY_REG_39 0x9c
-#define PHY_REG_40 0xa0
-#define PHY_REG_41 0xa4
-#define PHY_REG_42 0xa8
-#define PHY_REG_43 0xac
-#define PHY_REG_44 0xb0
-#define PHY_REG_45 0xb4
-#define PHY_REG_46 0xb8
-#define PHY_REG_47 0xbc
+#define PHY_REG(reg) (reg * 4)
+
+#define REG12_CK_DIV_MASK GENMASK(5, 4)
+#define REG13_TG_CODE_LOW_MASK GENMASK(7, 0)
+#define REG14_TOL_MASK GENMASK(7, 4)
+#define REG14_RP_CODE_MASK GENMASK(3, 1)
+#define REG14_TG_CODE_HIGH_MASK GENMASK(0, 0)
+#define REG21_SEL_TX_CK_INV BIT(7)
+#define REG21_PMS_S_MASK GENMASK(3, 0)
+#define REG33_MODE_SET_DONE BIT(7)
+#define REG33_FIX_DA BIT(1)
+#define REG34_PHY_READY BIT(7)
+#define REG34_PLL_LOCK BIT(6)
+#define REG34_PHY_CLK_READY BIT(5)
#define PHY_PLL_DIV_REGS_NUM 6
@@ -369,29 +313,29 @@ struct reg_settings {
};
static const struct reg_settings common_phy_cfg[] = {
- { PHY_REG_00, 0x00 }, { PHY_REG_01, 0xd1 },
- { PHY_REG_08, 0x4f }, { PHY_REG_09, 0x30 },
- { PHY_REG_10, 0x33 }, { PHY_REG_11, 0x65 },
+ { PHY_REG(0), 0x00 }, { PHY_REG(1), 0xd1 },
+ { PHY_REG(8), 0x4f }, { PHY_REG(9), 0x30 },
+ { PHY_REG(10), 0x33 }, { PHY_REG(11), 0x65 },
/* REG12 pixclk specific */
/* REG13 pixclk specific */
/* REG14 pixclk specific */
- { PHY_REG_15, 0x80 }, { PHY_REG_16, 0x6c },
- { PHY_REG_17, 0xf2 }, { PHY_REG_18, 0x67 },
- { PHY_REG_19, 0x00 }, { PHY_REG_20, 0x10 },
+ { PHY_REG(15), 0x80 }, { PHY_REG(16), 0x6c },
+ { PHY_REG(17), 0xf2 }, { PHY_REG(18), 0x67 },
+ { PHY_REG(19), 0x00 }, { PHY_REG(20), 0x10 },
/* REG21 pixclk specific */
- { PHY_REG_22, 0x30 }, { PHY_REG_23, 0x32 },
- { PHY_REG_24, 0x60 }, { PHY_REG_25, 0x8f },
- { PHY_REG_26, 0x00 }, { PHY_REG_27, 0x00 },
- { PHY_REG_28, 0x08 }, { PHY_REG_29, 0x00 },
- { PHY_REG_30, 0x00 }, { PHY_REG_31, 0x00 },
- { PHY_REG_32, 0x00 }, { PHY_REG_33, 0x80 },
- { PHY_REG_34, 0x00 }, { PHY_REG_35, 0x00 },
- { PHY_REG_36, 0x00 }, { PHY_REG_37, 0x00 },
- { PHY_REG_38, 0x00 }, { PHY_REG_39, 0x00 },
- { PHY_REG_40, 0x00 }, { PHY_REG_41, 0xe0 },
- { PHY_REG_42, 0x83 }, { PHY_REG_43, 0x0f },
- { PHY_REG_44, 0x3E }, { PHY_REG_45, 0xf8 },
- { PHY_REG_46, 0x00 }, { PHY_REG_47, 0x00 }
+ { PHY_REG(22), 0x30 }, { PHY_REG(23), 0x32 },
+ { PHY_REG(24), 0x60 }, { PHY_REG(25), 0x8f },
+ { PHY_REG(26), 0x00 }, { PHY_REG(27), 0x00 },
+ { PHY_REG(28), 0x08 }, { PHY_REG(29), 0x00 },
+ { PHY_REG(30), 0x00 }, { PHY_REG(31), 0x00 },
+ { PHY_REG(32), 0x00 }, { PHY_REG(33), 0x80 },
+ { PHY_REG(34), 0x00 }, { PHY_REG(35), 0x00 },
+ { PHY_REG(36), 0x00 }, { PHY_REG(37), 0x00 },
+ { PHY_REG(38), 0x00 }, { PHY_REG(39), 0x00 },
+ { PHY_REG(40), 0x00 }, { PHY_REG(41), 0xe0 },
+ { PHY_REG(42), 0x83 }, { PHY_REG(43), 0x0f },
+ { PHY_REG(44), 0x3E }, { PHY_REG(45), 0xf8 },
+ { PHY_REG(46), 0x00 }, { PHY_REG(47), 0x00 }
};
struct fsl_samsung_hdmi_phy {
@@ -442,7 +386,7 @@ fsl_samsung_hdmi_phy_configure_pixclk(struct fsl_samsung_hdmi_phy *phy,
}
writeb(REG21_SEL_TX_CK_INV | FIELD_PREP(REG21_PMS_S_MASK, div),
- phy->regs + PHY_REG_21);
+ phy->regs + PHY_REG(21));
}
static void
@@ -469,7 +413,7 @@ fsl_samsung_hdmi_phy_configure_pll_lock_det(struct fsl_samsung_hdmi_phy *phy,
break;
}
- writeb(FIELD_PREP(REG12_CK_DIV_MASK, ilog2(div)), phy->regs + PHY_REG_12);
+ writeb(FIELD_PREP(REG12_CK_DIV_MASK, ilog2(div)), phy->regs + PHY_REG(12));
/*
* Calculation for the frequency lock detector target code (fld_tg_code)
@@ -489,11 +433,11 @@ fsl_samsung_hdmi_phy_configure_pll_lock_det(struct fsl_samsung_hdmi_phy *phy,
/* FLD_TOL and FLD_RP_CODE taken from downstream driver */
writeb(FIELD_PREP(REG13_TG_CODE_LOW_MASK, fld_tg_code),
- phy->regs + PHY_REG_13);
+ phy->regs + PHY_REG(13));
writeb(FIELD_PREP(REG14_TOL_MASK, 2) |
FIELD_PREP(REG14_RP_CODE_MASK, 2) |
FIELD_PREP(REG14_TG_CODE_HIGH_MASK, fld_tg_code >> 8),
- phy->regs + PHY_REG_14);
+ phy->regs + PHY_REG(14));
}
static int fsl_samsung_hdmi_phy_configure(struct fsl_samsung_hdmi_phy *phy,
@@ -503,7 +447,7 @@ static int fsl_samsung_hdmi_phy_configure(struct fsl_samsung_hdmi_phy *phy,
u8 val;
/* HDMI PHY init */
- writeb(REG33_FIX_DA, phy->regs + PHY_REG_33);
+ writeb(REG33_FIX_DA, phy->regs + PHY_REG(33));
/* common PHY registers */
for (i = 0; i < ARRAY_SIZE(common_phy_cfg); i++)
@@ -511,14 +455,14 @@ static int fsl_samsung_hdmi_phy_configure(struct fsl_samsung_hdmi_phy *phy,
/* set individual PLL registers PHY_REG2 ... PHY_REG7 */
for (i = 0; i < PHY_PLL_DIV_REGS_NUM; i++)
- writeb(cfg->pll_div_regs[i], phy->regs + PHY_REG_02 + i * 4);
+ writeb(cfg->pll_div_regs[i], phy->regs + PHY_REG(2) + i * 4);
fsl_samsung_hdmi_phy_configure_pixclk(phy, cfg);
fsl_samsung_hdmi_phy_configure_pll_lock_det(phy, cfg);
- writeb(REG33_FIX_DA | REG33_MODE_SET_DONE, phy->regs + PHY_REG_33);
+ writeb(REG33_FIX_DA | REG33_MODE_SET_DONE, phy->regs + PHY_REG(33));
- ret = readb_poll_timeout(phy->regs + PHY_REG_34, val,
+ ret = readb_poll_timeout(phy->regs + PHY_REG(34), val,
val & REG34_PLL_LOCK, 50, 20000);
if (ret)
dev_err(phy->dev, "PLL failed to lock\n");
--
2.43.0
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