summaryrefslogtreecommitdiffstats
path: root/drivers/phy/phy-rockchip-usb.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/phy/phy-rockchip-usb.c')
-rw-r--r--drivers/phy/phy-rockchip-usb.c188
1 files changed, 161 insertions, 27 deletions
diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c
index 16cd533b21f0..33a80eba1cb4 100644
--- a/drivers/phy/phy-rockchip-usb.c
+++ b/drivers/phy/phy-rockchip-usb.c
@@ -15,12 +15,14 @@
*/
#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_platform.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
@@ -36,15 +38,28 @@
#define SIDDQ_ON BIT(13)
#define SIDDQ_OFF (0 << 13)
+struct rockchip_usb_phys {
+ int reg;
+ const char *pll_name;
+};
+
+struct rockchip_usb_phy_pdata {
+ struct rockchip_usb_phys *phys;
+};
+
struct rockchip_usb_phy_base {
struct device *dev;
struct regmap *reg_base;
+ const struct rockchip_usb_phy_pdata *pdata;
};
struct rockchip_usb_phy {
struct rockchip_usb_phy_base *base;
+ struct device_node *np;
unsigned int reg_offset;
struct clk *clk;
+ struct clk *clk480m;
+ struct clk_hw clk480m_hw;
struct phy *phy;
};
@@ -55,17 +70,59 @@ static int rockchip_usb_phy_power(struct rockchip_usb_phy *phy,
SIDDQ_WRITE_ENA | (siddq ? SIDDQ_ON : SIDDQ_OFF));
}
-static int rockchip_usb_phy_power_off(struct phy *_phy)
+static unsigned long rockchip_usb_phy480m_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
{
- struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
- int ret = 0;
+ return 480000000;
+}
+
+static void rockchip_usb_phy480m_disable(struct clk_hw *hw)
+{
+ struct rockchip_usb_phy *phy = container_of(hw,
+ struct rockchip_usb_phy,
+ clk480m_hw);
/* Power down usb phy analog blocks by set siddq 1 */
- ret = rockchip_usb_phy_power(phy, 1);
- if (ret)
+ rockchip_usb_phy_power(phy, 1);
+}
+
+static int rockchip_usb_phy480m_enable(struct clk_hw *hw)
+{
+ struct rockchip_usb_phy *phy = container_of(hw,
+ struct rockchip_usb_phy,
+ clk480m_hw);
+
+ /* Power up usb phy analog blocks by set siddq 0 */
+ return rockchip_usb_phy_power(phy, 0);
+}
+
+static int rockchip_usb_phy480m_is_enabled(struct clk_hw *hw)
+{
+ struct rockchip_usb_phy *phy = container_of(hw,
+ struct rockchip_usb_phy,
+ clk480m_hw);
+ int ret;
+ u32 val;
+
+ ret = regmap_read(phy->base->reg_base, phy->reg_offset, &val);
+ if (ret < 0)
return ret;
- clk_disable_unprepare(phy->clk);
+ return (val & SIDDQ_ON) ? 0 : 1;
+}
+
+static const struct clk_ops rockchip_usb_phy480m_ops = {
+ .enable = rockchip_usb_phy480m_enable,
+ .disable = rockchip_usb_phy480m_disable,
+ .is_enabled = rockchip_usb_phy480m_is_enabled,
+ .recalc_rate = rockchip_usb_phy480m_recalc_rate,
+};
+
+static int rockchip_usb_phy_power_off(struct phy *_phy)
+{
+ struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
+
+ clk_disable_unprepare(phy->clk480m);
return 0;
}
@@ -73,20 +130,8 @@ static int rockchip_usb_phy_power_off(struct phy *_phy)
static int rockchip_usb_phy_power_on(struct phy *_phy)
{
struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
- int ret = 0;
- ret = clk_prepare_enable(phy->clk);
- if (ret)
- return ret;
-
- /* Power up usb phy analog blocks by set siddq 0 */
- ret = rockchip_usb_phy_power(phy, 0);
- if (ret) {
- clk_disable_unprepare(phy->clk);
- return ret;
- }
-
- return 0;
+ return clk_prepare_enable(phy->clk480m);
}
static const struct phy_ops ops = {
@@ -99,6 +144,9 @@ static void rockchip_usb_phy_action(void *data)
{
struct rockchip_usb_phy *rk_phy = data;
+ of_clk_del_provider(rk_phy->np);
+ clk_unregister(rk_phy->clk480m);
+
if (rk_phy->clk)
clk_put(rk_phy->clk);
}
@@ -108,13 +156,16 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
{
struct rockchip_usb_phy *rk_phy;
unsigned int reg_offset;
- int err;
+ const char *clk_name;
+ struct clk_init_data init;
+ int err, i;
rk_phy = devm_kzalloc(base->dev, sizeof(*rk_phy), GFP_KERNEL);
if (!rk_phy)
return -ENOMEM;
rk_phy->base = base;
+ rk_phy->np = child;
if (of_property_read_u32(child, "reg", &reg_offset)) {
dev_err(base->dev, "missing reg property in node %s\n",
@@ -124,14 +175,54 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
rk_phy->reg_offset = reg_offset;
- err = devm_add_action(base->dev, rockchip_usb_phy_action, rk_phy);
- if (err)
- return err;
-
rk_phy->clk = of_clk_get_by_name(child, "phyclk");
if (IS_ERR(rk_phy->clk))
rk_phy->clk = NULL;
+ i = 0;
+ init.name = NULL;
+ while (base->pdata->phys[i].reg) {
+ if (base->pdata->phys[i].reg == reg_offset) {
+ init.name = base->pdata->phys[i].pll_name;
+ break;
+ }
+ i++;
+ }
+
+ if (!init.name) {
+ dev_err(base->dev, "phy data not found\n");
+ return -EINVAL;
+ }
+
+ if (rk_phy->clk) {
+ clk_name = __clk_get_name(rk_phy->clk);
+ init.flags = 0;
+ init.parent_names = &clk_name;
+ init.num_parents = 1;
+ } else {
+ init.flags = CLK_IS_ROOT;
+ init.parent_names = NULL;
+ init.num_parents = 0;
+ }
+
+ init.ops = &rockchip_usb_phy480m_ops;
+ rk_phy->clk480m_hw.init = &init;
+
+ rk_phy->clk480m = clk_register(base->dev, &rk_phy->clk480m_hw);
+ if (IS_ERR(rk_phy->clk480m)) {
+ err = PTR_ERR(rk_phy->clk480m);
+ goto err_clk;
+ }
+
+ err = of_clk_add_provider(child, of_clk_src_simple_get,
+ rk_phy->clk480m);
+ if (err < 0)
+ goto err_clk_prov;
+
+ err = devm_add_action(base->dev, rockchip_usb_phy_action, rk_phy);
+ if (err)
+ goto err_devm_action;
+
rk_phy->phy = devm_phy_create(base->dev, child, &ops);
if (IS_ERR(rk_phy->phy)) {
dev_err(base->dev, "failed to create PHY\n");
@@ -141,13 +232,48 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
/* only power up usb phy when it use, so disable it when init*/
return rockchip_usb_phy_power(rk_phy, 1);
+
+err_devm_action:
+ of_clk_del_provider(child);
+err_clk_prov:
+ clk_unregister(rk_phy->clk480m);
+err_clk:
+ if (rk_phy->clk)
+ clk_put(rk_phy->clk);
+ return err;
}
+static const struct rockchip_usb_phy_pdata rk3066a_pdata = {
+ .phys = (struct rockchip_usb_phys[]){
+ { .reg = 0x17c, .pll_name = "sclk_otgphy0_480m" },
+ { .reg = 0x188, .pll_name = "sclk_otgphy1_480m" },
+ { /* sentinel */ }
+ },
+};
+
+static const struct rockchip_usb_phy_pdata rk3188_pdata = {
+ .phys = (struct rockchip_usb_phys[]){
+ { .reg = 0x10c, .pll_name = "sclk_otgphy0_480m" },
+ { .reg = 0x11c, .pll_name = "sclk_otgphy1_480m" },
+ { /* sentinel */ }
+ },
+};
+
+static const struct rockchip_usb_phy_pdata rk3288_pdata = {
+ .phys = (struct rockchip_usb_phys[]){
+ { .reg = 0x320, .pll_name = "sclk_otgphy0_480m" },
+ { .reg = 0x334, .pll_name = "sclk_otgphy1_480m" },
+ { .reg = 0x348, .pll_name = "sclk_otgphy2_480m" },
+ { /* sentinel */ }
+ },
+};
+
static int rockchip_usb_phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rockchip_usb_phy_base *phy_base;
struct phy_provider *phy_provider;
+ const struct of_device_id *match;
struct device_node *child;
int err;
@@ -155,6 +281,14 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
if (!phy_base)
return -ENOMEM;
+ match = of_match_device(dev->driver->of_match_table, dev);
+ if (!match || !match->data) {
+ dev_err(dev, "missing phy data\n");
+ return -EINVAL;
+ }
+
+ phy_base->pdata = match->data;
+
phy_base->dev = dev;
phy_base->reg_base = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
@@ -176,9 +310,9 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
}
static const struct of_device_id rockchip_usb_phy_dt_ids[] = {
- { .compatible = "rockchip,rk3066a-usb-phy" },
- { .compatible = "rockchip,rk3188-usb-phy" },
- { .compatible = "rockchip,rk3288-usb-phy" },
+ { .compatible = "rockchip,rk3066a-usb-phy", .data = &rk3066a_pdata },
+ { .compatible = "rockchip,rk3188-usb-phy", .data = &rk3188_pdata },
+ { .compatible = "rockchip,rk3288-usb-phy", .data = &rk3288_pdata },
{}
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 01:45:32 +0100