linux-kernel - Re: [PATCH v1 3/3] thermal: rockchip: Support the PX30 SoC in thermal driver

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Date:   Thu, 4 Apr 2019 05:08:27 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Elaine Zhang <zhangqing@...k-chips.com>, heiko@...ech.de
Cc:     rui.zhang@...el.com, edubezval@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        xxx@...k-chips.com, xf@...k-chips.com, huangtao@...k-chips.com
Subject: Re: [PATCH v1 3/3] thermal: rockchip: Support the PX30 SoC in thermal
 driver

On 01/04/2019 08:43, Elaine Zhang wrote:
> PX30 SOC has two Temperature Sensors for CPU and GPU.
> 
> Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
> ---
>  drivers/thermal/rockchip_thermal.c | 39 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> index faa6c7792155..d5c161e63361 100644
> --- a/drivers/thermal/rockchip_thermal.c
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -225,11 +225,15 @@ struct rockchip_thermal_data {
>  #define GRF_TSADC_TESTBIT_L			0x0e648
>  #define GRF_TSADC_TESTBIT_H			0x0e64c
>  
> +#define PX30_GRF_SOC_CON2			0x0408
> +
>  #define GRF_SARADC_TESTBIT_ON			(0x10001 << 2)
>  #define GRF_TSADC_TESTBIT_H_ON			(0x10001 << 2)
>  #define GRF_TSADC_VCM_EN_L			(0x10001 << 7)
>  #define GRF_TSADC_VCM_EN_H			(0x10001 << 7)
>  
> +#define GRF_CON_TSADC_CH_INV			(0x10001 << 1)
> +
>  /**
>   * struct tsadc_table - code to temperature conversion table
>   * @code: the value of adc channel
> @@ -692,6 +696,14 @@ static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs,
>  			       regs + TSADCV2_AUTO_CON);
>  }
>  
> +static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs,
> +				  enum tshut_polarity tshut_polarity)
> +{
> +	rk_tsadcv2_initialize(grf, regs, tshut_polarity);
> +	if (!IS_ERR(grf))

Why this test ? grf is not modified by the 'rk_tsadcv2_initialize' function.

> +		regmap_write(grf, PX30_GRF_SOC_CON2, GRF_CON_TSADC_CH_INV);
> +}
> +
>  static void rk_tsadcv2_irq_ack(void __iomem *regs)
>  {
>  	u32 val;
> @@ -821,6 +833,30 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
>  	writel_relaxed(val, regs + TSADCV2_INT_EN);
>  }
>  
> +static const struct rockchip_tsadc_chip px30_tsadc_data = {
> +	.chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
> +	.chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
> +	.chn_num = 2, /* 2 channels for tsadc */
> +
> +	.tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
> +	.tshut_temp = 95000,
> +
> +	.initialize = rk_tsadcv4_initialize,
> +	.irq_ack = rk_tsadcv3_irq_ack,
> +	.control = rk_tsadcv3_control,
> +	.get_temp = rk_tsadcv2_get_temp,
> +	.set_alarm_temp = rk_tsadcv2_alarm_temp,
> +	.set_tshut_temp = rk_tsadcv2_tshut_temp,
> +	.set_tshut_mode = rk_tsadcv2_tshut_mode,
> +
> +	.table = {
> +		.id = rk3328_code_table,
> +		.length = ARRAY_SIZE(rk3328_code_table),
> +		.data_mask = TSADCV2_DATA_MASK,
> +		.mode = ADC_INCREMENT,
> +	},
> +};
> +
>  static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
>  	.chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
>  	.chn_num = 1, /* one channel for tsadc */
> @@ -993,6 +1029,9 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
>  };
>  
>  static const struct of_device_id of_rockchip_thermal_match[] = {
> +	{	.compatible = "rockchip,px30-tsadc",
> +		.data = (void *)&px30_tsadc_data,
> +	},
>  	{
>  		.compatible = "rockchip,rv1108-tsadc",
>  		.data = (void *)&rv1108_tsadc_data,
> 


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