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Date: Mon, 27 Feb 2017 18:45:44 -0600
From: Rob Herring <robh@...nel.org>
To: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
Cc: netdev <netdev@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Florian Fainelli <f.fainelli@...il.com>,
Allan.Nielsen@...rosemi.com, Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH v2 net] net: phy: Fix LED mode in DT single property.
On Fri, Feb 24, 2017 at 4:47 AM, Raju Lakkaraju
<Raju.Lakkaraju@...rosemi.com> wrote:
> From: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
>
> Fix the LED mode DT parameters combine to a single property
> and change the vendor prefix i.e. mscc.
>
> Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
> ---
> Change set:
> v0: Fix the LED mode DT parameters combine to a single property
> v1: Fix the build test ERROR
> v2: Add default LED mode "vsc85xx_dt_led_mode_get" function.
See my comments on v1.
> .../devicetree/bindings/net/mscc-phy-vsc8531.txt | 20 +++----
> drivers/net/phy/mscc.c | 65 ++++++++++++----------
> 2 files changed, 45 insertions(+), 40 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt b/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
> index 0eedabe..2253de5 100644
> --- a/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
> +++ b/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
> @@ -6,12 +6,12 @@ Required properties:
> Documentation/devicetree/bindings/net/phy.txt
>
> Optional properties:
> -- vsc8531,vddmac : The vddmac in mV. Allowed values is listed
> +- mscc,vddmac : The vddmac in mV. Allowed values is listed
> in the first row of Table 1 (below).
> This property is only used in combination
> with the 'edge-slowdown' property.
> Default value is 3300.
> -- vsc8531,edge-slowdown : % the edge should be slowed down relative to
> +- mscc,edge-slowdown : % the edge should be slowed down relative to
> the fastest possible edge time.
> Edge rate sets the drive strength of the MAC
> interface output signals. Changing the
> @@ -27,14 +27,11 @@ Optional properties:
> 'vddmac'.
> Default value is 0%.
> Ref: Table:1 - Edge rate change (below).
> -- vsc8531,led-0-mode : LED mode. Specify how the LED[0] should behave.
> +- mscc,led-mode : LED mode. Specify how the LED[0] and LED[1] should behave.
> Allowed values are define in
> "include/dt-bindings/net/mscc-phy-vsc8531.h".
> - Default value is VSC8531_LINK_1000_ACTIVITY (1).
> -- vsc8531,led-1-mode : LED mode. Specify how the LED[1] should behave.
> - Allowed values are define in
> - "include/dt-bindings/net/mscc-phy-vsc8531.h".
> - Default value is VSC8531_LINK_100_ACTIVITY (2).
> + Default LED[0] value is VSC8531_LINK_1000_ACTIVITY (1).
> + Default LED[1] value is VSC8531_LINK_100_ACTIVITY (2).
>
> Table: 1 - Edge rate change
> ----------------------------------------------------------------|
> @@ -66,8 +63,7 @@ Example:
>
> vsc8531_0: ethernet-phy@0 {
> compatible = "ethernet-phy-id0007.0570";
> - vsc8531,vddmac = <3300>;
> - vsc8531,edge-slowdown = <7>;
> - vsc8531,led-0-mode = <LINK_1000_ACTIVITY>;
> - vsc8531,led-1-mode = <LINK_100_ACTIVITY>;
> + mscc,vddmac = /bits/ 16 <3300>;
> + mscc,edge-slowdown = /bits/ 8 <7>;
> + mscc,led-mode = <LINK_1000_ACTIVITY LINK_100_ACTIVITY>;
> };
> diff --git a/drivers/net/phy/mscc.c b/drivers/net/phy/mscc.c
> index 650c266..5cd705b 100644
> --- a/drivers/net/phy/mscc.c
> +++ b/drivers/net/phy/mscc.c
> @@ -385,11 +385,11 @@ static int vsc85xx_edge_rate_magic_get(struct phy_device *phydev)
> if (!of_node)
> return -ENODEV;
>
> - rc = of_property_read_u16(of_node, "vsc8531,vddmac", &vdd);
> + rc = of_property_read_u16(of_node, "mscc,vddmac", &vdd);
> if (rc != 0)
> vdd = MSCC_VDDMAC_3300;
>
> - rc = of_property_read_u8(of_node, "vsc8531,edge-slowdown", &sd);
> + rc = of_property_read_u8(of_node, "mscc,edge-slowdown", &sd);
> if (rc != 0)
> sd = 0;
>
> @@ -402,26 +402,43 @@ static int vsc85xx_edge_rate_magic_get(struct phy_device *phydev)
> return -EINVAL;
> }
>
> -static int vsc85xx_dt_led_mode_get(struct phy_device *phydev,
> - char *led,
> - u8 default_mode)
> +static int vsc85xx_dt_led_mode_get(struct phy_device *phydev, char *led)
> {
> struct device *dev = &phydev->mdio.dev;
> struct device_node *of_node = dev->of_node;
> - u8 led_mode;
> - int err;
> + struct vsc8531_private *vsc8531 = phydev->priv;
> + u8 led_0_mode = VSC8531_LINK_1000_ACTIVITY;
> + u8 led_1_mode = VSC8531_LINK_100_ACTIVITY;
> + const __be32 *paddr_end;
> + const __be32 *paddr;
> + int len;
>
> if (!of_node)
> return -ENODEV;
>
> - led_mode = default_mode;
> - err = of_property_read_u8(of_node, led, &led_mode);
> - if (!err && (led_mode > 15 || led_mode == 7 || led_mode == 11)) {
> - phydev_err(phydev, "DT %s invalid\n", led);
> + paddr = of_get_property(of_node, "mscc,led-mode", &len);
> + if (!paddr)
> + return -EINVAL;
> +
> + paddr_end = paddr + (len /= sizeof(*paddr));
> + while (paddr + 1 < paddr_end) {
> + led_0_mode = be32_to_cpup(paddr++);
> + led_1_mode = be32_to_cpup(paddr++);
> + }
> +
> + if (!len && (led_0_mode > 15 || led_0_mode == 7 || led_0_mode == 11)) {
> + phydev_err(phydev, "DT %s-0 invalid\n", led);
> return -EINVAL;
> }
> + vsc8531->led_0_mode = led_0_mode;
>
> - return led_mode;
> + if (!len && (led_1_mode > 15 || led_1_mode == 7 || led_1_mode == 11)) {
> + phydev_err(phydev, "DT %s-1 invalid\n", led);
> + return -EINVAL;
> + }
> + vsc8531->led_1_mode = led_1_mode;
> +
> + return 0;
> }
>
> #else
> @@ -430,11 +447,9 @@ static int vsc85xx_edge_rate_magic_get(struct phy_device *phydev)
> return 0;
> }
>
> -static int vsc85xx_dt_led_mode_get(struct phy_device *phydev,
> - char *led,
> - u8 default_mode)
> +static int vsc85xx_dt_led_mode_get(struct phy_device *phydev, char *led)
> {
> - return default_mode;
> + return 0;
> }
> #endif /* CONFIG_OF_MDIO */
>
> @@ -626,7 +641,7 @@ static int vsc85xx_probe(struct phy_device *phydev)
> {
> struct vsc8531_private *vsc8531;
> int rate_magic;
> - int led_mode;
> + int err;
>
> rate_magic = vsc85xx_edge_rate_magic_get(phydev);
> if (rate_magic < 0)
> @@ -641,17 +656,11 @@ static int vsc85xx_probe(struct phy_device *phydev)
> vsc8531->rate_magic = rate_magic;
>
> /* 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;
> + vsc8531->led_0_mode = VSC8531_LINK_1000_ACTIVITY;
> + vsc8531->led_1_mode = VSC8531_LINK_100_ACTIVITY;
> + err = vsc85xx_dt_led_mode_get(phydev, "mscc,led-mode");
> + if (err < 0)
> + return err;
>
> return 0;
> }
> --
> 2.7.4
>
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