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net: phy: mscc: factorize code for LEDs mode 

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Quentin Schulz 2018-09-03 10:48:47 +02:00 committed by David S. Miller
parent 802869f4e5
commit 11bfdabb7f
1 changed files with 39 additions and 36 deletions
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75
drivers/net/phy/mscc.c
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@ -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 */