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Subject[PATCH net-next v2 1/7] net: phy: mscc: factorize code for LEDs mode
Date
LEDs modes are set the same way, except they are offset by 4 times the
index of the LED.

Let's factorize all the code so that it's easier to add support for the
4 LEDs of the VSC8584 PHY.

Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
---
drivers/net/phy/mscc.c | 75 ++++++++++++++++++++++--------------------
1 file changed, 39 insertions(+), 36 deletions(-)

diff --git a/drivers/net/phy/mscc.c b/drivers/net/phy/mscc.c
index 84ca9ff40ae0..af433f226ef4 100644
--- a/drivers/net/phy/mscc.c
+++ b/drivers/net/phy/mscc.c
@@ -54,9 +54,9 @@ enum rgmii_rx_clock_delay {
#define HP_AUTO_MDIX_X_OVER_IND_MASK 0x2000

#define MSCC_PHY_LED_MODE_SEL 29
-#define LED_1_MODE_SEL_MASK 0x00F0
-#define LED_0_MODE_SEL_MASK 0x000F
-#define LED_1_MODE_SEL_POS 4
+#define LED_MODE_SEL_POS(x) ((x) * 4)
+#define LED_MODE_SEL_MASK(x) (GENMASK(3, 0) << LED_MODE_SEL_POS(x))
+#define LED_MODE_SEL(x, mode) (((mode) << LED_MODE_SEL_POS(x)) & LED_MODE_SEL_MASK(x))

#define MSCC_EXT_PAGE_ACCESS 31
#define MSCC_PHY_PAGE_STANDARD 0x0000 /* Standard registers */
@@ -103,10 +103,11 @@ enum rgmii_rx_clock_delay {

#define DOWNSHIFT_COUNT_MAX 5

+#define MAX_LEDS 4
struct vsc8531_private {
int rate_magic;
- u8 led_0_mode;
- u8 led_1_mode;
+ u8 leds_mode[MAX_LEDS];
+ u8 nleds;
};

#ifdef CONFIG_OF_MDIO
@@ -140,14 +141,8 @@ static int vsc85xx_led_cntl_set(struct phy_device *phydev,

mutex_lock(&phydev->lock);
reg_val = phy_read(phydev, MSCC_PHY_LED_MODE_SEL);
- if (led_num) {
- reg_val &= ~LED_1_MODE_SEL_MASK;
- reg_val |= (((u16)mode << LED_1_MODE_SEL_POS) &
- LED_1_MODE_SEL_MASK);
- } else {
- reg_val &= ~LED_0_MODE_SEL_MASK;
- reg_val |= ((u16)mode & LED_0_MODE_SEL_MASK);
- }
+ reg_val &= ~LED_MODE_SEL_MASK(led_num);
+ reg_val |= LED_MODE_SEL(led_num, (u16)mode);
rc = phy_write(phydev, MSCC_PHY_LED_MODE_SEL, reg_val);
mutex_unlock(&phydev->lock);

@@ -438,6 +433,27 @@ static int vsc85xx_dt_led_mode_get(struct phy_device *phydev,
}
#endif /* CONFIG_OF_MDIO */

+static int vsc85xx_dt_led_modes_get(struct phy_device *phydev, u8 *default_mode)
+{
+ struct vsc8531_private *priv = phydev->priv;
+ char led_dt_prop[19];
+ int i, ret;
+
+ for (i = 0; i < priv->nleds; i++) {
+ ret = sprintf(led_dt_prop, "vsc8531,led-%d-mode", i);
+ if (ret < 0)
+ return ret;
+
+ ret = vsc85xx_dt_led_mode_get(phydev, led_dt_prop,
+ default_mode[i]);
+ if (ret < 0)
+ return ret;
+ priv->leds_mode[i] = ret;
+ }
+
+ return 0;
+}
+
static int vsc85xx_edge_rate_cntl_set(struct phy_device *phydev, u8 edge_rate)
{
int rc;
@@ -545,7 +561,7 @@ static int vsc85xx_set_tunable(struct phy_device *phydev,

static int vsc85xx_config_init(struct phy_device *phydev)
{
- int rc;
+ int rc, i;
struct vsc8531_private *vsc8531 = phydev->priv;

rc = vsc85xx_default_config(phydev);
@@ -560,13 +576,11 @@ static int vsc85xx_config_init(struct phy_device *phydev)
if (rc)
return rc;

- rc = vsc85xx_led_cntl_set(phydev, 1, vsc8531->led_1_mode);
- if (rc)
- return rc;
-
- rc = vsc85xx_led_cntl_set(phydev, 0, vsc8531->led_0_mode);
- if (rc)
- return rc;
+ for (i = 0; i < vsc8531->nleds; i++) {
+ rc = vsc85xx_led_cntl_set(phydev, i, vsc8531->leds_mode[i]);
+ if (rc)
+ return rc;
+ }

rc = genphy_config_init(phydev);

@@ -626,7 +640,8 @@ static int vsc85xx_probe(struct phy_device *phydev)
{
struct vsc8531_private *vsc8531;
int rate_magic;
- int led_mode;
+ u8 default_mode[2] = {VSC8531_LINK_1000_ACTIVITY,
+ VSC8531_LINK_100_ACTIVITY};

rate_magic = vsc85xx_edge_rate_magic_get(phydev);
if (rate_magic < 0)
@@ -639,21 +654,9 @@ static int vsc85xx_probe(struct phy_device *phydev)
phydev->priv = vsc8531;

vsc8531->rate_magic = rate_magic;
+ vsc8531->nleds = 2;

- /* LED[0] and LED[1] mode */
- led_mode = vsc85xx_dt_led_mode_get(phydev, "vsc8531,led-0-mode",
- VSC8531_LINK_1000_ACTIVITY);
- if (led_mode < 0)
- return led_mode;
- vsc8531->led_0_mode = led_mode;
-
- led_mode = vsc85xx_dt_led_mode_get(phydev, "vsc8531,led-1-mode",
- VSC8531_LINK_100_ACTIVITY);
- if (led_mode < 0)
- return led_mode;
- vsc8531->led_1_mode = led_mode;
-
- return 0;
+ return vsc85xx_dt_led_modes_get(phydev, default_mode);
}

/* Microsemi VSC85xx PHYs */
--
2.17.1
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