diff mbox

[2/5] phy-sun4i-usb: Add support for the host usb-phys found on the H3 SoC

Message ID 1447616777-24660-2-git-send-email-hdegoede@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Hans de Goede Nov. 15, 2015, 7:46 p.m. UTC
From: Reinder de Haan <patchesrdh@mveas.com>

Note this commit only adds support for phys 1-3, phy 0, the otg phy, is
not yet (fully) supported after this commit.

Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 .../devicetree/bindings/phy/sun4i-usb-phy.txt      |  1 +
 drivers/phy/phy-sun4i-usb.c                        | 67 +++++++++++++++++-----
 2 files changed, 53 insertions(+), 15 deletions(-)

Comments

Rob Herring Nov. 16, 2015, 3:29 p.m. UTC | #1
On Sun, Nov 15, 2015 at 08:46:14PM +0100, Hans de Goede wrote:
> From: Reinder de Haan <patchesrdh@mveas.com>
> 
> Note this commit only adds support for phys 1-3, phy 0, the otg phy, is
> not yet (fully) supported after this commit.
> 
> Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>  .../devicetree/bindings/phy/sun4i-usb-phy.txt      |  1 +

Acked-by: Rob Herring <robh@kernel.org>

>  drivers/phy/phy-sun4i-usb.c                        | 67 +++++++++++++++++-----
>  2 files changed, 53 insertions(+), 15 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> index 0cebf74..95736d7 100644
> --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> @@ -9,6 +9,7 @@ Required properties:
>    * allwinner,sun7i-a20-usb-phy
>    * allwinner,sun8i-a23-usb-phy
>    * allwinner,sun8i-a33-usb-phy
> +  * allwinner,sun8i-h3-usb-phy
>  - reg : a list of offset + length pairs
>  - reg-names :
>    * "phy_ctrl"
> diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
> index b12964b..17f97ab 100644
> --- a/drivers/phy/phy-sun4i-usb.c
> +++ b/drivers/phy/phy-sun4i-usb.c
> @@ -46,6 +46,9 @@
>  #define REG_PHYBIST			0x08
>  #define REG_PHYTUNE			0x0c
>  #define REG_PHYCTL_A33			0x10
> +#define REG_PHY_UNK_H3			0x20
> +
> +#define REG_PMU_UNK_H3			0x10
>  
>  #define PHYCTL_DATA			BIT(7)
>  
> @@ -79,7 +82,7 @@
>  #define PHY_DISCON_TH_SEL		0x2a
>  #define PHY_SQUELCH_DETECT		0x3c
>  
> -#define MAX_PHYS			3
> +#define MAX_PHYS			4
>  
>  /*
>   * Note do not raise the debounce time, we must report Vusb high within 100ms
> @@ -88,12 +91,19 @@
>  #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,
> +	sun8i_h3_phy
> +};
> +
>  struct sun4i_usb_phy_data {
> +	struct device *dev;
>  	void __iomem *base;
>  	struct mutex mutex;
>  	int num_phys;
>  	u32 disc_thresh;
> -	bool has_a33_phyctl;
> +	enum sun4i_usb_phy_type type;
>  	struct sun4i_usb_phy {
>  		struct phy *phy;
>  		void __iomem *pmu;
> @@ -164,12 +174,18 @@ 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->type) {
> +	case sun4i_a10_phy:
> +		phyctl = phy_data->base + REG_PHYCTL_A10;
> +		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;
> +	case sun8i_h3_phy:
> +		dev_err(phy_data->dev, "H3 usb_phy_write is not supported\n");
> +		break;
>  	}
>  
>  	for (i = 0; i < len; i++) {
> @@ -230,6 +246,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>  	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
>  	struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
>  	int ret;
> +	u32 val;
>  
>  	ret = clk_prepare_enable(phy->clk);
>  	if (ret)
> @@ -241,15 +258,26 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>  		return ret;
>  	}
>  
> -	/* Enable USB 45 Ohm resistor calibration */
> -	if (phy->index == 0)
> -		sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
> +	if (data->type == sun8i_h3_phy) {
> +		if (phy->index == 0) {
> +			val = readl(data->base + REG_PHY_UNK_H3);
> +			writel(val & ~1, data->base + REG_PHY_UNK_H3);
> +		}
> +
> +		val = readl(phy->pmu + REG_PMU_UNK_H3);
> +		writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
> +	} else {
> +		/* Enable USB 45 Ohm resistor calibration */
> +		if (phy->index == 0)
> +			sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
>  
> -	/* Adjust PHY's magnitude and rate */
> -	sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
> +		/* Adjust PHY's magnitude and rate */
> +		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);
> +		/* Disconnect threshold adjustment */
> +		sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
> +				    data->disc_thresh, 2);
> +	}
>  
>  	sun4i_usb_phy_passby(phy, 1);
>  
> @@ -522,11 +550,14 @@ 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);
> +	data->dev = dev;
>  
>  	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 if (of_device_is_compatible(np, "allwinner,sun8i-h3-usb-phy"))
> +		data->num_phys = 4;
>  	else
>  		data->num_phys = 3;
>  
> @@ -538,13 +569,18 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
>  
>  	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"))
> +	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy") ||
> +	    of_device_is_compatible(np, "allwinner,sun8i-h3-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->type = sun8i_a33_phy;
> +	else if (of_device_is_compatible(np, "allwinner,sun8i-h3-usb-phy"))
> +		data->type = sun8i_h3_phy;
> +	else
> +		data->type = sun4i_a10_phy;
>  
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
>  	data->base = devm_ioremap_resource(dev, res);
> @@ -620,7 +656,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
>  			return PTR_ERR(phy->reset);
>  		}
>  
> -		if (i) { /* No pmu for usbc0 */
> +		if (data->type == sun8i_h3_phy || i != 0) {
>  			snprintf(name, sizeof(name), "pmu%d", i);
>  			res = platform_get_resource_byname(pdev,
>  							IORESOURCE_MEM, name);
> @@ -696,6 +732,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = {
>  	{ .compatible = "allwinner,sun7i-a20-usb-phy" },
>  	{ .compatible = "allwinner,sun8i-a23-usb-phy" },
>  	{ .compatible = "allwinner,sun8i-a33-usb-phy" },
> +	{ .compatible = "allwinner,sun8i-h3-usb-phy" },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
> -- 
> 2.5.0
> 
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
Priit Laes Nov. 20, 2015, 7:49 p.m. UTC | #2
On Sun, 2015-11-15 at 20:46 +0100, Hans de Goede wrote:
> From: Reinder de Haan <patchesrdh@mveas.com>
> 
> Note this commit only adds support for phys 1-3, phy 0, the otg phy,
> is
> not yet (fully) supported after this commit.


This patch seems to be causing following compile warning:

In file included from include/linux/io.h:25:0,
                 from drivers/phy/phy-sun4i-usb.c:28:
drivers/phy/phy-sun4i-usb.c: In function 'sun4i_usb_phy_write': ./arch/arm/include/asm/io.h:94:2: warning: 'phyctl' may be used uninitialized in this function [-Wmaybe-uni
nitialized]
  asm volatile("strb %1, %0"
  ^
drivers/phy/phy-sun4i-usb.c:172:8: note: 'phyctl' was declared here
  void *phyctl;

> 
> Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>  .../devicetree/bindings/phy/sun4i-usb-phy.txt      |  1 +
>  drivers/phy/phy-sun4i-usb.c                        | 67
> +++++++++++++++++-----
>  2 files changed, 53 insertions(+), 15 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> index 0cebf74..95736d7 100644
> --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
> @@ -9,6 +9,7 @@ Required properties:
>    * allwinner,sun7i-a20-usb-phy
>    * allwinner,sun8i-a23-usb-phy
>    * allwinner,sun8i-a33-usb-phy
> +  * allwinner,sun8i-h3-usb-phy
>  - reg : a list of offset + length pairs
>  - reg-names :
>    * "phy_ctrl"
> diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-
> usb.c
> index b12964b..17f97ab 100644
> --- a/drivers/phy/phy-sun4i-usb.c
> +++ b/drivers/phy/phy-sun4i-usb.c
> @@ -46,6 +46,9 @@
>  #define REG_PHYBIST			0x08
>  #define REG_PHYTUNE			0x0c
>  #define REG_PHYCTL_A33			0x10
> +#define REG_PHY_UNK_H3			0x20
> +
> +#define REG_PMU_UNK_H3			0x10
>  
>  #define PHYCTL_DATA			BIT(7)
>  
> @@ -79,7 +82,7 @@
>  #define PHY_DISCON_TH_SEL		0x2a
>  #define PHY_SQUELCH_DETECT		0x3c
>  
> -#define MAX_PHYS			3
> +#define MAX_PHYS			4
>  
>  /*
>   * Note do not raise the debounce time, we must report Vusb high
> within 100ms
> @@ -88,12 +91,19 @@
>  #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,
> +	sun8i_h3_phy
> +};
> +
>  struct sun4i_usb_phy_data {
> +	struct device *dev;
>  	void __iomem *base;
>  	struct mutex mutex;
>  	int num_phys;
>  	u32 disc_thresh;
> -	bool has_a33_phyctl;
> +	enum sun4i_usb_phy_type type;
>  	struct sun4i_usb_phy {
>  		struct phy *phy;
>  		void __iomem *pmu;
> @@ -164,12 +174,18 @@ 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->type) {
> +	case sun4i_a10_phy:
> +		phyctl = phy_data->base + REG_PHYCTL_A10;
> +		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;
> +	case sun8i_h3_phy:
> +		dev_err(phy_data->dev, "H3 usb_phy_write is not
> supported\n");
> +		break;
>  	}
>  
>  	for (i = 0; i < len; i++) {
> @@ -230,6 +246,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>  	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
>  	struct sun4i_usb_phy_data *data =
> to_sun4i_usb_phy_data(phy);
>  	int ret;
> +	u32 val;
>  
>  	ret = clk_prepare_enable(phy->clk);
>  	if (ret)
> @@ -241,15 +258,26 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>  		return ret;
>  	}
>  
> -	/* Enable USB 45 Ohm resistor calibration */
> -	if (phy->index == 0)
> -		sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
> +	if (data->type == sun8i_h3_phy) {
> +		if (phy->index == 0) {
> +			val = readl(data->base + REG_PHY_UNK_H3);
> +			writel(val & ~1, data->base +
> REG_PHY_UNK_H3);
> +		}
> +
> +		val = readl(phy->pmu + REG_PMU_UNK_H3);
> +		writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
> +	} else {
> +		/* Enable USB 45 Ohm resistor calibration */
> +		if (phy->index == 0)
> +			sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN,
> 0x01, 1);
>  
> -	/* Adjust PHY's magnitude and rate */
> -	sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
> +		/* Adjust PHY's magnitude and rate */
> +		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);
> +		/* Disconnect threshold adjustment */
> +		sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
> +				    data->disc_thresh, 2);
> +	}
>  
>  	sun4i_usb_phy_passby(phy, 1);
>  
> @@ -522,11 +550,14 @@ 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);
> +	data->dev = dev;
>  
>  	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 if (of_device_is_compatible(np, "allwinner,sun8i-h3-
> usb-phy"))
> +		data->num_phys = 4;
>  	else
>  		data->num_phys = 3;
>  
> @@ -538,13 +569,18 @@ static int sun4i_usb_phy_probe(struct
> platform_device *pdev)
>  
>  	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"))
> +	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-
> phy") ||
> +	    of_device_is_compatible(np, "allwinner,sun8i-h3-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->type = sun8i_a33_phy;
> +	else if (of_device_is_compatible(np, "allwinner,sun8i-h3-
> usb-phy"))
> +		data->type = sun8i_h3_phy;
> +	else
> +		data->type = sun4i_a10_phy;
>  
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "phy_ctrl");
>  	data->base = devm_ioremap_resource(dev, res);
> @@ -620,7 +656,7 @@ static int sun4i_usb_phy_probe(struct
> platform_device *pdev)
>  			return PTR_ERR(phy->reset);
>  		}
>  
> -		if (i) { /* No pmu for usbc0 */
> +		if (data->type == sun8i_h3_phy || i != 0) {
>  			snprintf(name, sizeof(name), "pmu%d", i);
>  			res = platform_get_resource_byname(pdev,
>  							IORESOURCE_M
> EM, name);
> @@ -696,6 +732,7 @@ static const struct of_device_id
> sun4i_usb_phy_of_match[] = {
>  	{ .compatible = "allwinner,sun7i-a20-usb-phy" },
>  	{ .compatible = "allwinner,sun8i-a23-usb-phy" },
>  	{ .compatible = "allwinner,sun8i-a33-usb-phy" },
> +	{ .compatible = "allwinner,sun8i-h3-usb-phy" },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
> -- 
> 2.5.0
>
Hans de Goede Nov. 22, 2015, 11:29 a.m. UTC | #3
Hi,

On 11/20/2015 08:49 PM, Priit Laes wrote:
> On Sun, 2015-11-15 at 20:46 +0100, Hans de Goede wrote:
>> From: Reinder de Haan <patchesrdh@mveas.com>
>>
>> Note this commit only adds support for phys 1-3, phy 0, the otg phy,
>> is
>> not yet (fully) supported after this commit.
>
>
> This patch seems to be causing following compile warning:
>
> In file included from include/linux/io.h:25:0,
>                   from drivers/phy/phy-sun4i-usb.c:28:
> drivers/phy/phy-sun4i-usb.c: In function 'sun4i_usb_phy_write': ./arch/arm/include/asm/io.h:94:2: warning: 'phyctl' may be used uninitialized in this function [-Wmaybe-uni
> nitialized]
>    asm volatile("strb %1, %0"
>    ^
> drivers/phy/phy-sun4i-usb.c:172:8: note: 'phyctl' was declared here
>    void *phyctl;

Good catch, thanks the "break;" after the dev_err for the h3 case should be a return (this is a dead code path,
the dev_err is there to avoid people trying to actually use sun4i_usb_phy_write() with the h3 in
the future).

v2 of this patch fixing this is on its way.

Regards,

Hans


>
>>
>> Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>>   .../devicetree/bindings/phy/sun4i-usb-phy.txt      |  1 +
>>   drivers/phy/phy-sun4i-usb.c                        | 67
>> +++++++++++++++++-----
>>   2 files changed, 53 insertions(+), 15 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> index 0cebf74..95736d7 100644
>> --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> @@ -9,6 +9,7 @@ Required properties:
>>     * allwinner,sun7i-a20-usb-phy
>>     * allwinner,sun8i-a23-usb-phy
>>     * allwinner,sun8i-a33-usb-phy
>> +  * allwinner,sun8i-h3-usb-phy
>>   - reg : a list of offset + length pairs
>>   - reg-names :
>>     * "phy_ctrl"
>> diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-
>> usb.c
>> index b12964b..17f97ab 100644
>> --- a/drivers/phy/phy-sun4i-usb.c
>> +++ b/drivers/phy/phy-sun4i-usb.c
>> @@ -46,6 +46,9 @@
>>   #define REG_PHYBIST			0x08
>>   #define REG_PHYTUNE			0x0c
>>   #define REG_PHYCTL_A33			0x10
>> +#define REG_PHY_UNK_H3			0x20
>> +
>> +#define REG_PMU_UNK_H3			0x10
>>
>>   #define PHYCTL_DATA			BIT(7)
>>
>> @@ -79,7 +82,7 @@
>>   #define PHY_DISCON_TH_SEL		0x2a
>>   #define PHY_SQUELCH_DETECT		0x3c
>>
>> -#define MAX_PHYS			3
>> +#define MAX_PHYS			4
>>
>>   /*
>>    * Note do not raise the debounce time, we must report Vusb high
>> within 100ms
>> @@ -88,12 +91,19 @@
>>   #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,
>> +	sun8i_h3_phy
>> +};
>> +
>>   struct sun4i_usb_phy_data {
>> +	struct device *dev;
>>   	void __iomem *base;
>>   	struct mutex mutex;
>>   	int num_phys;
>>   	u32 disc_thresh;
>> -	bool has_a33_phyctl;
>> +	enum sun4i_usb_phy_type type;
>>   	struct sun4i_usb_phy {
>>   		struct phy *phy;
>>   		void __iomem *pmu;
>> @@ -164,12 +174,18 @@ 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->type) {
>> +	case sun4i_a10_phy:
>> +		phyctl = phy_data->base + REG_PHYCTL_A10;
>> +		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;
>> +	case sun8i_h3_phy:
>> +		dev_err(phy_data->dev, "H3 usb_phy_write is not
>> supported\n");
>> +		break;
>>   	}
>>
>>   	for (i = 0; i < len; i++) {
>> @@ -230,6 +246,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>>   	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
>>   	struct sun4i_usb_phy_data *data =
>> to_sun4i_usb_phy_data(phy);
>>   	int ret;
>> +	u32 val;
>>
>>   	ret = clk_prepare_enable(phy->clk);
>>   	if (ret)
>> @@ -241,15 +258,26 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>>   		return ret;
>>   	}
>>
>> -	/* Enable USB 45 Ohm resistor calibration */
>> -	if (phy->index == 0)
>> -		sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
>> +	if (data->type == sun8i_h3_phy) {
>> +		if (phy->index == 0) {
>> +			val = readl(data->base + REG_PHY_UNK_H3);
>> +			writel(val & ~1, data->base +
>> REG_PHY_UNK_H3);
>> +		}
>> +
>> +		val = readl(phy->pmu + REG_PMU_UNK_H3);
>> +		writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
>> +	} else {
>> +		/* Enable USB 45 Ohm resistor calibration */
>> +		if (phy->index == 0)
>> +			sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN,
>> 0x01, 1);
>>
>> -	/* Adjust PHY's magnitude and rate */
>> -	sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
>> +		/* Adjust PHY's magnitude and rate */
>> +		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);
>> +		/* Disconnect threshold adjustment */
>> +		sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
>> +				    data->disc_thresh, 2);
>> +	}
>>
>>   	sun4i_usb_phy_passby(phy, 1);
>>
>> @@ -522,11 +550,14 @@ 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);
>> +	data->dev = dev;
>>
>>   	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 if (of_device_is_compatible(np, "allwinner,sun8i-h3-
>> usb-phy"))
>> +		data->num_phys = 4;
>>   	else
>>   		data->num_phys = 3;
>>
>> @@ -538,13 +569,18 @@ static int sun4i_usb_phy_probe(struct
>> platform_device *pdev)
>>
>>   	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"))
>> +	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-
>> phy") ||
>> +	    of_device_is_compatible(np, "allwinner,sun8i-h3-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->type = sun8i_a33_phy;
>> +	else if (of_device_is_compatible(np, "allwinner,sun8i-h3-
>> usb-phy"))
>> +		data->type = sun8i_h3_phy;
>> +	else
>> +		data->type = sun4i_a10_phy;
>>
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
>> "phy_ctrl");
>>   	data->base = devm_ioremap_resource(dev, res);
>> @@ -620,7 +656,7 @@ static int sun4i_usb_phy_probe(struct
>> platform_device *pdev)
>>   			return PTR_ERR(phy->reset);
>>   		}
>>
>> -		if (i) { /* No pmu for usbc0 */
>> +		if (data->type == sun8i_h3_phy || i != 0) {
>>   			snprintf(name, sizeof(name), "pmu%d", i);
>>   			res = platform_get_resource_byname(pdev,
>>   							IORESOURCE_M
>> EM, name);
>> @@ -696,6 +732,7 @@ static const struct of_device_id
>> sun4i_usb_phy_of_match[] = {
>>   	{ .compatible = "allwinner,sun7i-a20-usb-phy" },
>>   	{ .compatible = "allwinner,sun8i-a23-usb-phy" },
>>   	{ .compatible = "allwinner,sun8i-a33-usb-phy" },
>> +	{ .compatible = "allwinner,sun8i-h3-usb-phy" },
>>   	{ },
>>   };
>>   MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
>> --
>> 2.5.0
>>
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
index 0cebf74..95736d7 100644
--- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
+++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
@@ -9,6 +9,7 @@  Required properties:
   * allwinner,sun7i-a20-usb-phy
   * allwinner,sun8i-a23-usb-phy
   * allwinner,sun8i-a33-usb-phy
+  * allwinner,sun8i-h3-usb-phy
 - reg : a list of offset + length pairs
 - reg-names :
   * "phy_ctrl"
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index b12964b..17f97ab 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -46,6 +46,9 @@ 
 #define REG_PHYBIST			0x08
 #define REG_PHYTUNE			0x0c
 #define REG_PHYCTL_A33			0x10
+#define REG_PHY_UNK_H3			0x20
+
+#define REG_PMU_UNK_H3			0x10
 
 #define PHYCTL_DATA			BIT(7)
 
@@ -79,7 +82,7 @@ 
 #define PHY_DISCON_TH_SEL		0x2a
 #define PHY_SQUELCH_DETECT		0x3c
 
-#define MAX_PHYS			3
+#define MAX_PHYS			4
 
 /*
  * Note do not raise the debounce time, we must report Vusb high within 100ms
@@ -88,12 +91,19 @@ 
 #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,
+	sun8i_h3_phy
+};
+
 struct sun4i_usb_phy_data {
+	struct device *dev;
 	void __iomem *base;
 	struct mutex mutex;
 	int num_phys;
 	u32 disc_thresh;
-	bool has_a33_phyctl;
+	enum sun4i_usb_phy_type type;
 	struct sun4i_usb_phy {
 		struct phy *phy;
 		void __iomem *pmu;
@@ -164,12 +174,18 @@  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->type) {
+	case sun4i_a10_phy:
+		phyctl = phy_data->base + REG_PHYCTL_A10;
+		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;
+	case sun8i_h3_phy:
+		dev_err(phy_data->dev, "H3 usb_phy_write is not supported\n");
+		break;
 	}
 
 	for (i = 0; i < len; i++) {
@@ -230,6 +246,7 @@  static int sun4i_usb_phy_init(struct phy *_phy)
 	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
 	struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
 	int ret;
+	u32 val;
 
 	ret = clk_prepare_enable(phy->clk);
 	if (ret)
@@ -241,15 +258,26 @@  static int sun4i_usb_phy_init(struct phy *_phy)
 		return ret;
 	}
 
-	/* Enable USB 45 Ohm resistor calibration */
-	if (phy->index == 0)
-		sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
+	if (data->type == sun8i_h3_phy) {
+		if (phy->index == 0) {
+			val = readl(data->base + REG_PHY_UNK_H3);
+			writel(val & ~1, data->base + REG_PHY_UNK_H3);
+		}
+
+		val = readl(phy->pmu + REG_PMU_UNK_H3);
+		writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
+	} else {
+		/* Enable USB 45 Ohm resistor calibration */
+		if (phy->index == 0)
+			sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
 
-	/* Adjust PHY's magnitude and rate */
-	sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
+		/* Adjust PHY's magnitude and rate */
+		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);
+		/* Disconnect threshold adjustment */
+		sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
+				    data->disc_thresh, 2);
+	}
 
 	sun4i_usb_phy_passby(phy, 1);
 
@@ -522,11 +550,14 @@  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);
+	data->dev = dev;
 
 	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 if (of_device_is_compatible(np, "allwinner,sun8i-h3-usb-phy"))
+		data->num_phys = 4;
 	else
 		data->num_phys = 3;
 
@@ -538,13 +569,18 @@  static int sun4i_usb_phy_probe(struct platform_device *pdev)
 
 	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"))
+	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy") ||
+	    of_device_is_compatible(np, "allwinner,sun8i-h3-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->type = sun8i_a33_phy;
+	else if (of_device_is_compatible(np, "allwinner,sun8i-h3-usb-phy"))
+		data->type = sun8i_h3_phy;
+	else
+		data->type = sun4i_a10_phy;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
 	data->base = devm_ioremap_resource(dev, res);
@@ -620,7 +656,7 @@  static int sun4i_usb_phy_probe(struct platform_device *pdev)
 			return PTR_ERR(phy->reset);
 		}
 
-		if (i) { /* No pmu for usbc0 */
+		if (data->type == sun8i_h3_phy || i != 0) {
 			snprintf(name, sizeof(name), "pmu%d", i);
 			res = platform_get_resource_byname(pdev,
 							IORESOURCE_MEM, name);
@@ -696,6 +732,7 @@  static const struct of_device_id sun4i_usb_phy_of_match[] = {
 	{ .compatible = "allwinner,sun7i-a20-usb-phy" },
 	{ .compatible = "allwinner,sun8i-a23-usb-phy" },
 	{ .compatible = "allwinner,sun8i-a33-usb-phy" },
+	{ .compatible = "allwinner,sun8i-h3-usb-phy" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);