218 lines
6.5 KiB
Diff
218 lines
6.5 KiB
Diff
From 5c627d8e7660c170c591ef281184fd11d0493440 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Fri, 11 Dec 2015 16:32:17 +0100
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Subject: [PATCH] phy-sun4i-usb: Use of_match_node to get model specific config
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data
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Use of_match_node instead of calling of_device_is_compatible a ton of
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times to get model specific config data.
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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---
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drivers/phy/phy-sun4i-usb.c | 121 +++++++++++++++++++++++++++++---------------
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1 file changed, 79 insertions(+), 42 deletions(-)
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--- a/drivers/phy/phy-sun4i-usb.c
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+++ b/drivers/phy/phy-sun4i-usb.c
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@@ -32,6 +32,7 @@
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#include <linux/mutex.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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+#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/phy/phy.h>
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#include <linux/phy/phy-sun4i-usb.h>
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@@ -88,12 +89,23 @@
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#define DEBOUNCE_TIME msecs_to_jiffies(50)
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#define POLL_TIME msecs_to_jiffies(250)
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+enum sun4i_usb_phy_type {
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+ sun4i_a10_phy,
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+ sun8i_a33_phy,
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+};
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+
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+struct sun4i_usb_phy_cfg {
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+ int num_phys;
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+ enum sun4i_usb_phy_type type;
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+ u32 disc_thresh;
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+ u8 phyctl_offset;
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+ bool dedicated_clocks;
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+};
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+
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struct sun4i_usb_phy_data {
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void __iomem *base;
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+ const struct sun4i_usb_phy_cfg *cfg;
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struct mutex mutex;
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- int num_phys;
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- u32 disc_thresh;
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- bool has_a33_phyctl;
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struct sun4i_usb_phy {
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struct phy *phy;
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void __iomem *pmu;
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@@ -159,17 +171,14 @@ static void sun4i_usb_phy_write(struct s
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{
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struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
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u32 temp, usbc_bit = BIT(phy->index * 2);
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- void *phyctl;
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+ void *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
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int i;
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mutex_lock(&phy_data->mutex);
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- if (phy_data->has_a33_phyctl) {
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- phyctl = phy_data->base + REG_PHYCTL_A33;
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+ if (phy_data->cfg->type == sun8i_a33_phy) {
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/* A33 needs us to set phyctl to 0 explicitly */
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writel(0, phyctl);
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- } else {
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- phyctl = phy_data->base + REG_PHYCTL_A10;
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}
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for (i = 0; i < len; i++) {
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@@ -249,7 +258,8 @@ static int sun4i_usb_phy_init(struct phy
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sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
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/* Disconnect threshold adjustment */
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- sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, data->disc_thresh, 2);
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+ sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
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+ data->cfg->disc_thresh, 2);
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sun4i_usb_phy_passby(phy, 1);
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@@ -476,7 +486,7 @@ static struct phy *sun4i_usb_phy_xlate(s
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{
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struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
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- if (args->args[0] >= data->num_phys)
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+ if (args->args[0] >= data->cfg->num_phys)
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return ERR_PTR(-ENODEV);
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return data->phys[args->args[0]].phy;
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@@ -511,7 +521,6 @@ static int sun4i_usb_phy_probe(struct pl
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struct device *dev = &pdev->dev;
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struct device_node *np = dev->of_node;
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struct phy_provider *phy_provider;
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- bool dedicated_clocks;
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struct resource *res;
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int i, ret;
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@@ -522,29 +531,9 @@ static int sun4i_usb_phy_probe(struct pl
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mutex_init(&data->mutex);
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INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
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dev_set_drvdata(dev, data);
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-
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- if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
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- of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
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- of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
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- data->num_phys = 2;
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- else
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- data->num_phys = 3;
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-
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- if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
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- of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy"))
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- data->disc_thresh = 2;
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- else
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- data->disc_thresh = 3;
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-
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- if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") ||
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- of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
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- of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
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- dedicated_clocks = true;
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- else
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- dedicated_clocks = false;
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-
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- if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
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- data->has_a33_phyctl = true;
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+ data->cfg = of_device_get_match_data(dev);
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+ if (!data->cfg)
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+ return -EINVAL;
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
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data->base = devm_ioremap_resource(dev, res);
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@@ -590,7 +579,7 @@ static int sun4i_usb_phy_probe(struct pl
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}
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}
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- for (i = 0; i < data->num_phys; i++) {
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+ for (i = 0; i < data->cfg->num_phys; i++) {
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struct sun4i_usb_phy *phy = data->phys + i;
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char name[16];
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@@ -602,7 +591,7 @@ static int sun4i_usb_phy_probe(struct pl
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phy->vbus = NULL;
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}
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- if (dedicated_clocks)
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+ if (data->cfg->dedicated_clocks)
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snprintf(name, sizeof(name), "usb%d_phy", i);
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else
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strlcpy(name, "usb_phy", sizeof(name));
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@@ -689,13 +678,61 @@ static int sun4i_usb_phy_probe(struct pl
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return 0;
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}
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+static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
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+ .num_phys = 3,
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+ .type = sun4i_a10_phy,
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+ .disc_thresh = 3,
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+ .phyctl_offset = REG_PHYCTL_A10,
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+ .dedicated_clocks = false,
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+};
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+
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+static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
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+ .num_phys = 2,
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+ .type = sun4i_a10_phy,
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+ .disc_thresh = 2,
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+ .phyctl_offset = REG_PHYCTL_A10,
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+ .dedicated_clocks = false,
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+};
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+
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+static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
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+ .num_phys = 3,
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+ .type = sun4i_a10_phy,
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+ .disc_thresh = 3,
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+ .phyctl_offset = REG_PHYCTL_A10,
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+ .dedicated_clocks = true,
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+};
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+
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+static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
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+ .num_phys = 3,
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+ .type = sun4i_a10_phy,
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+ .disc_thresh = 2,
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+ .phyctl_offset = REG_PHYCTL_A10,
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+ .dedicated_clocks = false,
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+};
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+
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+static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
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+ .num_phys = 2,
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+ .type = sun4i_a10_phy,
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+ .disc_thresh = 3,
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+ .phyctl_offset = REG_PHYCTL_A10,
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+ .dedicated_clocks = true,
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+};
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+
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+static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
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+ .num_phys = 2,
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+ .type = sun8i_a33_phy,
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+ .disc_thresh = 3,
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+ .phyctl_offset = REG_PHYCTL_A33,
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+ .dedicated_clocks = true,
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+};
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+
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static const struct of_device_id sun4i_usb_phy_of_match[] = {
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- { .compatible = "allwinner,sun4i-a10-usb-phy" },
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- { .compatible = "allwinner,sun5i-a13-usb-phy" },
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- { .compatible = "allwinner,sun6i-a31-usb-phy" },
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- { .compatible = "allwinner,sun7i-a20-usb-phy" },
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- { .compatible = "allwinner,sun8i-a23-usb-phy" },
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- { .compatible = "allwinner,sun8i-a33-usb-phy" },
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+ { .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
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+ { .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
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+ { .compatible = "allwinner,sun6i-a31-usb-phy", .data = &sun6i_a31_cfg },
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+ { .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
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+ { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
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+ { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
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{ },
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};
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MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
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