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Message-ID: <b97694939b824cf4b533b001a65005b4@sphcmbx01.sunplus.com.tw>
Date: Mon, 7 Nov 2022 01:18:03 +0000
From: Lh Kuo 郭力豪 <lh.Kuo@...plus.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
Li-hao Kuo <lhjeff911@...il.com>,
"krzk@...nel.org" <krzk@...nel.org>,
"rafael@...nel.org" <rafael@...nel.org>,
"amitk@...nel.org" <amitk@...nel.org>,
"rui.zhang@...el.com" <rui.zhang@...el.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v11 1/2] thermal: Add thermal driver for Sunplus
Thank you I will fix it in next next submission
> -----Original Message-----
> From: Daniel Lezcano <daniel.lezcano@...aro.org>
> Sent: Sunday, October 23, 2022 12:36 AM
> To: Li-hao Kuo <lhjeff911@...il.com>; krzk@...nel.org; rafael@...nel.org; amitk@...nel.org;
> rui.zhang@...el.com; robh+dt@...nel.org; linux-pm@...r.kernel.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Cc: Lh Kuo 郭力豪 <lh.Kuo@...plus.com>
> Subject: Re: [PATCH v11 1/2] thermal: Add thermal driver for Sunplus
>
> On 18/10/2022 09:32, Li-hao Kuo wrote:
> > Add thermal driver for Sunplus.
> >
> > Signed-off-by: Li-hao Kuo <lhjeff911@...il.com>
> > ---
> > Changes in v11:
> > - Remove the remove function of the platform_driver
> > - Fix error reported-by: kernel test robot.
> >
> > MAINTAINERS | 6 ++
> > drivers/thermal/Kconfig | 10 +++
> > drivers/thermal/Makefile | 1 +
> > drivers/thermal/sunplus_thermal.c | 130 ++++++++++++++++++++++++++++++++++++++
> > 4 files changed, 147 insertions(+)
> > create mode 100644 drivers/thermal/sunplus_thermal.c
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS index cf0f185..bf22c53 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -19753,6 +19753,12 @@ S: Maintained
> > F: Documentation/devicetree/bindings/spi/spi-sunplus-sp7021.yaml
> > F: drivers/spi/spi-sunplus-sp7021.c
> >
> > +SUNPLUS THERMAL DRIVER
> > +M: Li-hao Kuo <lhjeff911@...il.com>
> > +L: linux-pm@...r.kernel.org
> > +S: Maintained
> > +F: drivers/thermal/sunplus_thermal.c
> > +
> > SUNPLUS UART DRIVER
> > M: Hammer Hsieh <hammerh0314@...il.com>
> > S: Maintained
> > diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index
> > e052dae..405b788 100644
> > --- a/drivers/thermal/Kconfig
> > +++ b/drivers/thermal/Kconfig
> > @@ -504,4 +504,14 @@ config KHADAS_MCU_FAN_THERMAL
> > If you say yes here you get support for the FAN controlled
> > by the Microcontroller found on the Khadas VIM boards.
> >
> > +config SUNPLUS_THERMAL
> > + tristate "Sunplus thermal drivers"
> > + depends on SOC_SP7021 || COMPILE_TEST
> > + help
> > + This enable the Sunplus SP7021 thermal driver, which supports the primitive
> > + temperature sensor embedded in Sunplus SP7021 SoC.
> > +
> > + If you have a Sunplus SP7021 platform say Y here and enable this option
> > + to have support for thermal management.
> > +
> > endif
> > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index
> > 2506c6c..4512193 100644
> > --- a/drivers/thermal/Makefile
> > +++ b/drivers/thermal/Makefile
> > @@ -61,3 +61,4 @@ obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o
> > obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o
> > obj-$(CONFIG_SPRD_THERMAL) += sprd_thermal.o
> > obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL) += khadas_mcu_fan.o
> > +obj-$(CONFIG_SUNPLUS_THERMAL) += sunplus_thermal.o
> > \ No newline at end of file
> > diff --git a/drivers/thermal/sunplus_thermal.c
> > b/drivers/thermal/sunplus_thermal.c
> > new file mode 100644
> > index 0000000..20ea7d9
> > --- /dev/null
> > +++ b/drivers/thermal/sunplus_thermal.c
> > @@ -0,0 +1,130 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Copyright (c) Sunplus Inc.
> > + * Author: Li-hao Kuo <lhjeff911@...il.com> */
> > +
> > +#include <linux/bitfield.h>
> > +#include <linux/clk.h>
> > +#include <linux/delay.h>
> > +#include <linux/io.h>
> > +#include <linux/module.h>
> > +#include <linux/nvmem-consumer.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/reset.h>
> > +#include <linux/thermal.h>
> > +
> > +#define ENABLE_THERMAL BIT(31)
> > +#define SP_THERMAL_MASK GENMASK(10, 0)
> > +
> > +#define TEMP_RATE 608
> > +#define TEMP_BASE 3500
> > +#define TEMP_OTP_BASE 1518
> > +
> > +#define SP_THERMAL_CTL0_REG 0x0000
> > +#define SP_THERMAL_STS0_REG 0x0030
> > +
> > +/* common data structures */
> > +struct sp_thermal_data {
> > + struct thermal_zone_device *pcb_tz;
> > + void __iomem *regs;
> > + int *otp_temp0;
> > +};
> > +
> > +static int sunplus_get_otp_temp_coef(struct sp_thermal_data *sp_data,
> > +struct device *dev) {
> > + struct nvmem_cell *cell;
> > + ssize_t otp_l;
> > +
> > + cell = nvmem_cell_get(dev, "calib");
> > + if (IS_ERR(cell))
> > + return PTR_ERR(cell);
> > +
> > + sp_data->otp_temp0 = nvmem_cell_read(cell, &otp_l);
> > + nvmem_cell_put(cell);
> > +
> > + if (*sp_data->otp_temp0 == 0)
> > + *sp_data->otp_temp0 = TEMP_OTP_BASE;
> > +
> > + return 0;
> > +}
> > +
> > +/*
> > + * There is a thermal sensor instance for Sunplus Soc
> > + * T_CODE is the ADC of the thermal sensor
> > + * T_CODE : 11 digits in total
> > + * When remanufacturing, the 35 degree T_CODE will be read and stored in nvcell.
> > + * otp_temp0 is the 35 degree T_CODE obtained from nvcell
> > + * The function will get 35 degree T_CODE for thermal calibration.
> > + * TEMP_RATE is the Sunplus thermal temperature slope.
> > + */
> > +
> > +static int sp_thermal_get_sensor_temp(void *data, int *temp) {
> > + struct sp_thermal_data *sp_data = data;
> > + int t_code;
> > +
> > + t_code = readl(sp_data->regs + SP_THERMAL_STS0_REG);
> > + t_code = FIELD_GET(SP_THERMAL_MASK, t_code);
> > + *temp = ((*sp_data->otp_temp0 - t_code) * 10000 / TEMP_RATE) + TEMP_BASE;
> > + *temp *= 10;
> > + return 0;
> > +}
> > +
> > +static const struct thermal_zone_of_device_ops sp_of_thermal_ops = {
>
> struct thermal_zone_device_ops ...
>
>
> https://lore.kernel.org/r/20220804224349.1926752-1-daniel.lezcano@linexp.org
>
>
>
>
>
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