On Thu, Nov 26, 2015 at 12:50 AM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> Use of_match_node instead of calling of_device_is_compatible a ton of
> times to get model specific config data.
>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> Changes in v3:
> -New patch in v3 of this patch-set
> ---
> drivers/phy/phy-sun4i-usb.c | 130 +++++++++++++++++++++++++++++---------------
> 1 file changed, 85 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
> index b12964b..1d8f85d 100644
> --- a/drivers/phy/phy-sun4i-usb.c
> +++ b/drivers/phy/phy-sun4i-usb.c
> @@ -88,12 +88,22 @@
> #define DEBOUNCE_TIME msecs_to_jiffies(50)
> #define POLL_TIME msecs_to_jiffies(250)
>
> +enum sun4i_usb_phy_type {
> + sun4i_a10_phy,
> + sun8i_a33_phy,
> +};
> +
> +struct sun4i_usb_phy_cfg {
> + int num_phys;
> + u32 disc_thresh;
> + enum sun4i_usb_phy_type type;
> + bool dedicated_clocks;
> +};
> +
> struct sun4i_usb_phy_data {
> void __iomem *base;
> + const struct sun4i_usb_phy_cfg *cfg;
> struct mutex mutex;
> - int num_phys;
> - u32 disc_thresh;
> - bool has_a33_phyctl;
> struct sun4i_usb_phy {
> struct phy *phy;
> void __iomem *pmu;
> @@ -164,12 +174,15 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
>
> mutex_lock(&phy_data->mutex);
>
> - if (phy_data->has_a33_phyctl) {
> + switch (phy_data->cfg->type) {
> + case sun4i_a10_phy:
> + phyctl = phy_data->base + REG_PHYCTL_A10;
Any reason why this offset isn't incorporated into phy_data?
> + break;
> + case sun8i_a33_phy:
> phyctl = phy_data->base + REG_PHYCTL_A33;
> /* A33 needs us to set phyctl to 0 explicitly */
> writel(0, phyctl);
> - } else {
> - phyctl = phy_data->base + REG_PHYCTL_A10;
> + break;
> }
>
> for (i = 0; i < len; i++) {
> @@ -249,7 +262,8 @@ static int sun4i_usb_phy_init(struct phy *_phy)
> sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
>
> /* Disconnect threshold adjustment */
> - sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, data->disc_thresh, 2);
> + sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
> + data->cfg->disc_thresh, 2);
>
> sun4i_usb_phy_passby(phy, 1);
>
> @@ -476,7 +490,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
> {
> struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
>
> - if (args->args[0] >= data->num_phys)
> + if (args->args[0] >= data->cfg->num_phys)
> return ERR_PTR(-ENODEV);
>
> return data->phys[args->args[0]].phy;
> @@ -499,6 +513,59 @@ static int sun4i_usb_phy_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
> + .num_phys = 3,
> + .disc_thresh = 3,
> + .type = sun4i_a10_phy,
> + .dedicated_clocks = false,
> +};
> +
> +static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
> + .num_phys = 2,
> + .disc_thresh = 2,
> + .type = sun4i_a10_phy,
> + .dedicated_clocks = false,
> +};
> +
> +static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
> + .num_phys = 3,
> + .disc_thresh = 3,
> + .type = sun4i_a10_phy,
> + .dedicated_clocks = true,
> +};
> +
> +static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
> + .num_phys = 3,
> + .disc_thresh = 2,
> + .type = sun4i_a10_phy,
> + .dedicated_clocks = false,
> +};
> +
> +static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
> + .num_phys = 2,
> + .disc_thresh = 3,
> + .type = sun4i_a10_phy,
> + .dedicated_clocks = true,
> +};
> +
> +static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
> + .num_phys = 2,
> + .disc_thresh = 3,
> + .type = sun8i_a33_phy,
> + .dedicated_clocks = true,
> +};
> +
> +static const struct of_device_id sun4i_usb_phy_of_match[] = {
> + { .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
> + { .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
> + { .compatible = "allwinner,sun6i-a31-usb-phy", .data = &sun6i_a31_cfg },
> + { .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
> + { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
> + { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
> +
> static const unsigned int sun4i_usb_phy0_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> @@ -511,10 +578,16 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
> struct device *dev = &pdev->dev;
> struct device_node *np = dev->of_node;
> struct phy_provider *phy_provider;
> - bool dedicated_clocks;
> + const struct of_device_id *match;
> struct resource *res;
> int i, ret;
>
> + match = of_match_node(sun4i_usb_phy_of_match, dev->of_node);
You can use of_device_get_match_data() for slightly less code. This
will also let you keep the of_device_id table where it was, at the
bottom.
> + if (!match) {
I'm working on something similar in the axp20x driver. Is there any
case of_match_node or of_device_get_match_data can fail?
Regards
ChenYu
> + dev_err(dev, "of_match_node() failed\n");
> + return -EINVAL;
> + }
> +
> data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> if (!data)
> return -ENOMEM;
> @@ -522,29 +595,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
> mutex_init(&data->mutex);
> INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
> dev_set_drvdata(dev, data);
> -
> - if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
> - of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
> - of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
> - data->num_phys = 2;
> - else
> - data->num_phys = 3;
> -
> - if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
> - of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy"))
> - data->disc_thresh = 2;
> - else
> - data->disc_thresh = 3;
> -
> - if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") ||
> - of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
> - of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
> - dedicated_clocks = true;
> - else
> - dedicated_clocks = false;
> -
> - if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
> - data->has_a33_phyctl = true;
> + data->cfg = match->data;
>
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
> data->base = devm_ioremap_resource(dev, res);
> @@ -590,7 +641,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
> }
> }
>
> - for (i = 0; i < data->num_phys; i++) {
> + for (i = 0; i < data->cfg->num_phys; i++) {
> struct sun4i_usb_phy *phy = data->phys + i;
> char name[16];
>
> @@ -602,7 +653,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
> phy->vbus = NULL;
> }
>
> - if (dedicated_clocks)
> + if (data->cfg->dedicated_clocks)
> snprintf(name, sizeof(name), "usb%d_phy", i);
> else
> strlcpy(name, "usb_phy", sizeof(name));
> @@ -689,17 +740,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
> return 0;
> }
>
> -static const struct of_device_id sun4i_usb_phy_of_match[] = {
> - { .compatible = "allwinner,sun4i-a10-usb-phy" },
> - { .compatible = "allwinner,sun5i-a13-usb-phy" },
> - { .compatible = "allwinner,sun6i-a31-usb-phy" },
> - { .compatible = "allwinner,sun7i-a20-usb-phy" },
> - { .compatible = "allwinner,sun8i-a23-usb-phy" },
> - { .compatible = "allwinner,sun8i-a33-usb-phy" },
> - { },
> -};
> -MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
> -
> static struct platform_driver sun4i_usb_phy_driver = {
> .probe = sun4i_usb_phy_probe,
> .remove = sun4i_usb_phy_remove,
> --
> 2.5.0
>
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