// SPDX-License-Identifier: GPL-2.0+ // // silicom-platform.c - Silicom MEC170x platform driver // // Copyright (C) 2023 Henry Shi <[email protected]> #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/dmi.h> #include <linux/hwmon.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/kobject.h> #include <linux/led-class-multicolor.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/string.h> #include <linux/sysfs.h> #include <linux/units.h> #include <linux/gpio/driver.h> #define MEC_POWER_CYCLE_ADDR … #define MEC_EFUSE_LSB_ADDR … #define MEC_GPIO_IN_POS … #define MEC_IO_BASE … #define MEC_IO_LEN … #define IO_REG_BANK … #define DEFAULT_CHAN_LO … #define DEFAULT_CHAN_HI … #define DEFAULT_CHAN_LO_T … #define MEC_ADDR … #define EC_ADDR_LSB … #define SILICOM_MEC_MAGIC … #define MEC_PORT_CHANNEL_MASK … #define MEC_PORT_DWORD_OFFSET … #define MEC_DATA_OFFSET_MASK … #define MEC_PORT_OFFSET_MASK … #define MEC_TEMP_LOC … #define MEC_VERSION_LOC … #define MEC_VERSION_MAJOR … #define MEC_VERSION_MINOR … #define EC_ADDR_MSB … #define MEC_DATA_OFFSET(offset) … #define OFFSET_BIT_TO_CHANNEL(off, bit) … #define CHANNEL_TO_OFFSET(chan) … static DEFINE_MUTEX(mec_io_mutex); static unsigned int efuse_status; static unsigned int mec_uc_version; static unsigned int power_cycle; static const struct hwmon_channel_info *silicom_fan_control_info[] = …; struct silicom_platform_info { … }; static const char * const plat_0222_gpio_names[] = …; static u8 plat_0222_gpio_channels[] = …; static struct platform_device *silicom_platform_dev; static struct led_classdev_mc *silicom_led_info __initdata; static struct gpio_chip *silicom_gpiochip __initdata; static u8 *silicom_gpio_channels __initdata; static int silicom_mec_port_get(unsigned int offset) { … } static enum led_brightness silicom_mec_led_get(int channel) { … } static void silicom_mec_port_set(int channel, int on) { … } static enum led_brightness silicom_mec_led_mc_brightness_get(struct led_classdev *led_cdev) { … } static void silicom_mec_led_mc_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { … } static int silicom_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) { … } static int silicom_gpio_direction_input(struct gpio_chip *gc, unsigned int offset) { … } static void silicom_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) { … } static int silicom_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value) { … } static int silicom_gpio_get(struct gpio_chip *gc, unsigned int offset) { … } static struct mc_subled plat_0222_wan_mc_subled_info[] __initdata = …; static struct mc_subled plat_0222_sys_mc_subled_info[] __initdata = …; static struct mc_subled plat_0222_stat1_mc_subled_info[] __initdata = …; static struct mc_subled plat_0222_stat2_mc_subled_info[] __initdata = …; static struct mc_subled plat_0222_stat3_mc_subled_info[] __initdata = …; static struct led_classdev_mc plat_0222_mc_led_info[] __initdata = …; static struct gpio_chip silicom_gpio_chip = …; static struct silicom_platform_info silicom_plat_0222_cordoba_info __initdata = …; static struct mc_subled cordoba_fp_left_mc_subled_info[] __initdata = …; static struct mc_subled cordoba_fp_center_mc_subled_info[] __initdata = …; static struct mc_subled cordoba_fp_right_mc_subled_info[] __initdata = …; static struct led_classdev_mc cordoba_mc_led_info[] __initdata = …; static struct silicom_platform_info silicom_generic_cordoba_info __initdata = …; /* * sysfs interface */ static ssize_t efuse_status_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(efuse_status); static ssize_t uc_version_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(uc_version); static ssize_t power_cycle_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static void powercycle_uc(void) { … } static ssize_t power_cycle_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR_RW(power_cycle); static struct attribute *silicom_attrs[] = …; ATTRIBUTE_GROUPS(…); static struct platform_driver silicom_platform_driver = …; static int __init silicom_mc_leds_register(struct device *dev, const struct led_classdev_mc *mc_leds) { … } static u32 rpm_get(void) { … } static u32 temp_get(void) { … } static umode_t silicom_fan_control_fan_is_visible(const u32 attr) { … } static umode_t silicom_fan_control_temp_is_visible(const u32 attr) { … } static int silicom_fan_control_read_fan(struct device *dev, u32 attr, long *val) { … } static int silicom_fan_control_read_temp(struct device *dev, u32 attr, long *val) { … } static umode_t silicom_fan_control_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int silicom_fan_control_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static int silicom_fan_control_read_labels(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, const char **str) { … } static const struct hwmon_ops silicom_fan_control_hwmon_ops = …; static const struct hwmon_chip_info silicom_chip_info = …; static int __init silicom_platform_probe(struct platform_device *device) { … } static int __init silicom_platform_info_init(const struct dmi_system_id *id) { … } static const struct dmi_system_id silicom_dmi_ids[] __initconst = …; MODULE_DEVICE_TABLE(dmi, silicom_dmi_ids); static int __init silicom_platform_init(void) { … } static void __exit silicom_platform_exit(void) { … } module_init(…) …; module_exit(silicom_platform_exit); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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