linux-kernel - Re: [PATCH v4 5/7] usb: typec: tcpci_rt1711h: Add compatible id with rt1715

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Date:   Fri, 5 Aug 2022 04:27:50 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Gene Chen <gene.chen.richtek@...il.com>
Cc:     heikki.krogerus@...ux.intel.com, gregkh@...uxfoundation.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, gene_chen@...htek.com,
        cy_huang@...htek.com
Subject: Re: [PATCH v4 5/7] usb: typec: tcpci_rt1711h: Add compatible id with
 rt1715

On Fri, Aug 05, 2022 at 03:17:11PM +0800, Gene Chen wrote:
> From: Gene Chen <gene_chen@...htek.com>
> 
> Add compatible id with rt1715, and add initial setting for
> specific support PD30 command.
> 
> Signed-off-by: Gene Chen <gene_chen@...htek.com>
> Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/usb/typec/tcpm/tcpci_rt1711h.c | 43 +++++++++++++++++++++++++++-------
>  1 file changed, 34 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
> index 5c51d04..ff7deae 100644
> --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c
> +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
> @@ -18,6 +18,8 @@
>  
>  #define RT1711H_VID		0x29CF
>  #define RT1711H_PID		0x1711
> +#define RT1711H_DID		0x2171
> +#define RT1715_DID		0x2173
>  
>  #define RT1711H_PHYCTRL1	0x80
>  #define RT1711H_PHYCTRL2	0x81
> @@ -29,6 +31,7 @@
>  			    (((ck300) << 7) | ((ship_off) << 5) | \
>  			    ((auto_idle) << 3) | ((tout) & 0x07))
>  #define RT1711H_AUTOIDLEEN	BIT(3)
> +#define RT1711H_ENEXTMSG	BIT(4)
>  
>  #define RT1711H_RTCTRL11	0x9E
>  
> @@ -47,6 +50,7 @@ struct rt1711h_chip {
>  	struct device *dev;
>  	struct regulator *vbus;
>  	bool src_en;
> +	u16 did;
>  };
>  
>  static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val)
> @@ -83,8 +87,9 @@ static struct rt1711h_chip *tdata_to_rt1711h(struct tcpci_data *tdata)
>  
>  static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
>  {
> -	int ret;
>  	struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
> +	struct regmap *regmap = chip->data.regmap;
> +	int ret;
>  
>  	/* CK 300K from 320K, shipping off, auto_idle enable, tout = 32ms */
>  	ret = rt1711h_write8(chip, RT1711H_RTCTRL8,
> @@ -92,6 +97,14 @@ static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
>  	if (ret < 0)
>  		return ret;
>  
> +	/* Enable PD30 extended message for RT1715 */
> +	if (chip->did == RT1715_DID) {
> +		ret = regmap_update_bits(regmap, RT1711H_RTCTRL8,
> +					 RT1711H_ENEXTMSG, RT1711H_ENEXTMSG);
> +		if (ret < 0)
> +			return ret;
> +	}
> +
>  	/* I2C reset : (val + 1) * 12.5ms */
>  	ret = rt1711h_write8(chip, RT1711H_RTCTRL11,
>  			     RT1711H_RTCTRL11_SET(1, 0x0F));
> @@ -229,7 +242,7 @@ static int rt1711h_sw_reset(struct rt1711h_chip *chip)
>  	return 0;
>  }
>  
> -static int rt1711h_check_revision(struct i2c_client *i2c)
> +static int rt1711h_check_revision(struct i2c_client *i2c, struct rt1711h_chip *chip)
>  {
>  	int ret;
>  
> @@ -247,7 +260,15 @@ static int rt1711h_check_revision(struct i2c_client *i2c)
>  		dev_err(&i2c->dev, "pid is not correct, 0x%04x\n", ret);
>  		return -ENODEV;
>  	}
> -	return 0;
> +	ret = i2c_smbus_read_word_data(i2c, TCPC_BCD_DEV);
> +	if (ret < 0)
> +		return ret;
> +	if (ret != chip->did) {
> +		dev_err(&i2c->dev, "did is not correct, 0x%04x\n", ret);
> +		return -ENODEV;
> +	}
> +	dev_dbg(&i2c->dev, "did is 0x%04x\n", ret);
> +	return ret;
>  }
>  
>  static int rt1711h_probe(struct i2c_client *client,
> @@ -256,16 +277,18 @@ static int rt1711h_probe(struct i2c_client *client,
>  	int ret;
>  	struct rt1711h_chip *chip;
>  
> -	ret = rt1711h_check_revision(client);
> +	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
> +	if (!chip)
> +		return -ENOMEM;
> +
> +	chip->did = (size_t)device_get_match_data(&client->dev);
> +
> +	ret = rt1711h_check_revision(client, chip);
>  	if (ret < 0) {
>  		dev_err(&client->dev, "check vid/pid fail\n");
>  		return ret;
>  	}
>  
> -	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
> -	if (!chip)
> -		return -ENOMEM;
> -
>  	chip->data.regmap = devm_regmap_init_i2c(client,
>  						 &rt1711h_regmap_config);
>  	if (IS_ERR(chip->data.regmap))
> @@ -316,13 +339,15 @@ static int rt1711h_remove(struct i2c_client *client)
>  
>  static const struct i2c_device_id rt1711h_id[] = {
>  	{ "rt1711h", 0 },
> +	{ "rt1715", 0 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(i2c, rt1711h_id);
>  
>  #ifdef CONFIG_OF
>  static const struct of_device_id rt1711h_of_match[] = {
> -	{ .compatible = "richtek,rt1711h", },
> +	{ .compatible = "richtek,rt1711h", .data = (void *)RT1711H_DID },
> +	{ .compatible = "richtek,rt1715", .data = (void *)RT1715_DID },
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, rt1711h_of_match);
> -- 
> 2.7.4
>