I.MX6 PMU MMPF0100 driver porting
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/************************************************************************** * I.MX6 MMPF0100 driver porting * 说明: * 虽然主板上有MMPF0100芯片,却没有注册设备并使用该PMU驱动,真是浪费, * 当然因为需要,所以将PMU的驱动注册起来。 * * 2016-3-31 深圳 南山平山村 曾剑锋 *************************************************************************/ 参考文档: PF0100 PMIC drivers https://community.freescale.com/thread/308531 一、cat arch/arm/mach-mx6/mx6q_sabresd_pmic_pfuze100.c ...... #define PFUZE100_I2C_DEVICE_NAME "pfuze100" /* 7-bit I2C bus slave address */ #define PFUZE100_I2C_ADDR (0x08) ...... static struct i2c_board_info __initdata pfuze100_i2c_device = { I2C_BOARD_INFO(PFUZE100_I2C_DEVICE_NAME, PFUZE100_I2C_ADDR), .platform_data = &pfuze100_plat, }; int __init mx6q_sabresd_init_pfuze100(u32 int_gpio) { pfuze100_i2c_device.irq = gpio_to_irq(int_gpio); /*update INT gpio */ return i2c_register_board_info(1, &pfuze100_i2c_device, 1); } 二、cat arch/arm/mach-mx6/board-mx6dl_sabresd.h static iomux_v3_cfg_t mx6dl_sabresd_pads[] = { ...... MX6Q_PAD_GPIO_18__GPIO_7_13, ...... } 三、cat arch/arm/mach-mx6/board-mx6q_sabresd.c ...... #define SABREAUTO_PMIC_INT IMX_GPIO_NR(7, 13) ...... /** * PMU MMPF0100 devices */ ret = gpio_request(SABREAUTO_PMIC_INT, "pFUZE-int"); if (ret) { printk(KERN_ERR"request pFUZE-int error!!\n"); return; } else { gpio_direction_input(SABREAUTO_PMIC_INT); mx6q_sabresd_init_pfuze100(SABREAUTO_PMIC_INT); } ...... 四、i2c-tools检查注册情况: [email protected]:/data/local # ./i2cdetect -r -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- UU -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- UU -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- [email protected]:/data/local # 五、查看驱动信息: [email protected]:/sys/bus/i2c/devices/1-0008 # cat pfuze_ctl reg000: 10 reg001: 00 reg002: 00 reg003: 21 reg004: 00 reg005: 01 reg006: 3f reg007: 01 reg008: 00 reg009: 7f reg010: 00 reg011: 00 reg012: 00 reg013: 00 reg014: 00 reg015: 81 reg016: 00 reg017: 00 reg018: 3f reg019: 00 reg020: 00 reg021: 00 reg022: 00 reg023: 00 reg024: 00 reg025: 00 reg026: 00 reg027: 10 reg028: 00 reg029: 00 reg030: 00 reg031: 00 reg032: 2b reg033: 1b reg034: 2b reg035: 0c reg036: c4 reg037: 00 reg038: 00 reg039: 00 reg040: 00 reg041: 00 reg042: 00 reg043: 00 reg044: 00 reg045: 00 reg046: 2b reg047: 1b reg048: 2b reg049: 0c reg050: c4 reg051: 00 reg052: 00 reg053: 72 reg054: 72 reg055: 72 reg056: 0c reg057: d4 reg058: 00 reg059: 00 reg060: 2c reg061: 2c reg062: 2c reg063: 0c reg064: e4 reg065: 00 reg066: 00 reg067: 2c reg068: 2c reg069: 2c reg070: 0c reg071: e4 reg072: 00 reg073: 00 reg074: 6f reg075: 6f reg076: 6f reg077: 0c reg078: f4 reg079: 00 reg080: 00 reg081: 00 reg082: 00 reg083: 00 reg084: 00 reg085: 00 reg086: 00 reg087: 00 reg088: 00 reg089: 00 reg090: 00 reg091: 00 reg092: 00 reg093: 00 reg094: 00 reg095: 00 reg096: 00 reg097: 00 reg098: 00 reg099: 00 reg100: 00 reg101: 00 reg102: 48 reg103: 00 reg104: 00 reg105: 00 reg106: 10 reg107: 06 reg108: 1e reg109: 1e reg110: 17 reg111: 10 reg112: 1a reg113: 1f reg114: 00 reg115: 00 reg116: 00 reg117: 00 reg118: 00 reg119: 00 reg120: 00 reg121: 00 reg122: 00 reg123: 00 reg124: 00 reg125: 00 reg126: 00 reg127: 00 [email protected]:/sys/bus/i2c/devices/1-0008 #
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