Add thermal control driver for Sunplus SoC

Hi Li-hao,

I love your patch! Yet something to improve:

[auto build test ERROR on rafael-pm/thermal]
[also build test ERROR on krzk-dt/for-next linus/master v5.19-rc7 next-20220720] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Li-hao-Kuo/Add-thermal-control-driver-for-Sunplus-SoC/20220712-153158
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git thermal
config: sh-randconfig-s042-20220715 (https://download.01.org/0day-ci/archive/20220721/[email protected]/config)
compiler: sh4-linux-gcc (GCC) 12.1.0

reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://github.com/intel-lab-lkp/linux/commit/328f3fe3eb3d1984a68c51c4a413821bd4b397b6
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Li-hao-Kuo/Add-thermal-control-driver-for-Sunplus-SoC/20220712-153158
git checkout 328f3fe3eb3d1984a68c51c4a413821bd4b397b6
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash .// drivers/

If you fix the issue, kindly add following tag where applicable

All errors (new ones prefixed by >>):

In file included from include/linux/device.h:15,
from include/linux/platform_device.h:13, from drivers/thermal/sunplus_thermal.c:13:
drivers/thermal/sunplus_thermal.c: In function 'sunplus_thermal_probe':

>> drivers/thermal/sunplus_thermal.c:106:25: error: 'dev' undeclared (first use in this function); did you mean 'pdev'?
     106 |                 dev_err(dev, "Failed to register tsensor: %d\n", ret);
         |                         ^~~
   include/linux/dev_printk.h:110:25: note: in definition of macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                         ^~~
   drivers/thermal/sunplus_thermal.c:106:17: note: in expansion of macro 'dev_err'
     106 |                 dev_err(dev, "Failed to register tsensor: %d\n", ret);
         |                 ^~~~~~~
   drivers/thermal/sunplus_thermal.c:106:25: note: each undeclared identifier is reported only once for each function it appears in
     106 |                 dev_err(dev, "Failed to register tsensor: %d\n", ret);
         |                         ^~~
   include/linux/dev_printk.h:110:25: note: in definition of macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                         ^~~
   drivers/thermal/sunplus_thermal.c:106:17: note: in expansion of macro 'dev_err'
     106 |                 dev_err(dev, "Failed to register tsensor: %d\n", ret);
         |                 ^~~~~~~

vim +106 drivers/thermal/sunplus_thermal.c

  > 13	#include <linux/platform_device.h>
    14	#include <linux/reset.h>
    15	#include <linux/thermal.h>
    16	
    17	#define ENABLE_THERMAL		BIT(31)
    18	#define SP_THERMAL_MASK		GENMASK(10, 0)
    19	
    20	#define TEMP_RATE		608
    21	#define TEMP_BASE		3500
    22	#define TEMP_OTP_BASE		1518
    23	
    24	#define SP_THERMAL_CTL0_REG	0x0000
    25	#define SP_THERMAL_STS0_REG	0x0030
    26	
    27	/* common data structures */
    28	struct sp_thermal_data {
    29		struct thermal_zone_device *pcb_tz;
    30		void __iomem *regs;
    31		int *otp_temp0;
    32	};
    33	
    34	static int sunplus_get_otp_temp_coef(struct sp_thermal_data *sp_data, struct device *dev)
    35	{
    36		struct nvmem_cell *cell;
    37		ssize_t otp_l;
    38	
    39		cell = nvmem_cell_get(dev, "calib");
    40		if (IS_ERR(cell))
    41			return PTR_ERR(cell);
    42	
    43		sp_data->otp_temp0 = nvmem_cell_read(cell, &otp_l);
    44		nvmem_cell_put(cell);
    45	
    46		if (*sp_data->otp_temp0 == 0)
    47			*sp_data->otp_temp0 = TEMP_OTP_BASE;
    48	
    49		return 0;
    50	}
    51	
    52	/*
    53	 * There is a thermal sensor instance for Sunplus Soc
    54	 * T_CODE is the ADC of the thermal sensor
    55	 * T_CODE : 11 digits in total
    56	 * When remanufacturing, the 35 degree T_CODE will be read and stored in nvcell.
    57	 * otp_temp0 is the 35 degree T_CODE obtained from nvcell
    58	 * The function will get 35 degree T_CODE for thermal calibration.
    59	 * TEMP_RATE is the Sunplus thermal temperature slope.
    60	 */
    61	
    62	static int sp_thermal_get_sensor_temp(void *data, int *temp)
    63	{
    64		struct sp_thermal_data *sp_data = data;
    65		int t_code;
    66	
    67		t_code = readl(sp_data->regs + SP_THERMAL_STS0_REG);
    68		t_code = FIELD_GET(SP_THERMAL_MASK, t_code);
    69		*temp = ((*sp_data->otp_temp0 - t_code) * 10000 / TEMP_RATE) + TEMP_BASE;
    70		*temp *= 10;
    71		return 0;
    72	}
    73	
    74	static const struct thermal_zone_of_device_ops sp_of_thermal_ops = {
    75		.get_temp = sp_thermal_get_sensor_temp,
    76	};
    77	
    78	static int sunplus_thermal_probe(struct platform_device *pdev)
    79	{
    80		struct sp_thermal_data *sp_data;
    81		int ret;
    82	
    83		sp_data = devm_kzalloc(&pdev->dev, sizeof(*sp_data), GFP_KERNEL);
    84		if (!sp_data)
    85			return -ENOMEM;
    86	
    87		sp_data->regs = devm_platform_ioremap_resource(pdev, 0);
    88		if (IS_ERR(sp_data->regs)) {
    89			dev_err(&pdev->dev, "resource get fail\n");
    90			return PTR_ERR(sp_data->regs);
    91		}
    92	
    93		writel(ENABLE_THERMAL, sp_data->regs + SP_THERMAL_CTL0_REG);
    94	
    95		platform_set_drvdata(pdev, sp_data);
    96		ret = sunplus_get_otp_temp_coef(sp_data, &pdev->dev);
    97		if (ret)
    98			return ret;
    99	
   100		sp_data->pcb_tz = devm_thermal_zone_of_sensor_register(&pdev->dev,
   101								    0,
   102								    sp_data, &sp_of_thermal_ops);
   103	
   104		if (IS_ERR(sp_data->pcb_tz)) {
   105			ret = PTR_ERR(sp_data->pcb_tz);
 > 106			dev_err(dev, "Failed to register tsensor: %d\n", ret);

107 return ret;
108 }
109
110 return ret;
111 }
112

0-DAY CI Kernel Test Service
https://01.org/lkp