diff options
Diffstat (limited to 'drivers/mfd/tps65912-debugfs.c')
| -rw-r--r-- | drivers/mfd/tps65912-debugfs.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/mfd/tps65912-debugfs.c b/drivers/mfd/tps65912-debugfs.c new file mode 100644 index 00000000000..2a7d870aa8e --- /dev/null +++ b/drivers/mfd/tps65912-debugfs.c @@ -0,0 +1,213 @@ +/* + * Copyright (C) 2013 Motorola Mobility LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#include <linux/debugfs.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/fs.h> +#include <linux/gpio.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/stat.h> +#include <linux/mfd/tps65912.h> + + +struct tps65912_debugfs_reg_descr { + char *name; /* Debugfs file name */ + u8 reg; /* Register address */ +}; + +/* Registers exposed in debugfs */ +static const struct tps65912_debugfs_reg_descr debugfs_regs[] = { + { "DCDC1_CTRL", 0x00 }, + { "DCDC2_CTRL", 0x01 }, + { "DCDC3_CTRL", 0x02 }, + { "DCDC4_CTRL", 0x03 }, + { "DCDC1_OP", 0x04 }, + { "DCDC1_AVS", 0x05 }, + { "DCDC1_LIMIT", 0x06 }, + { "DCDC2_OP", 0x07 }, + { "DCDC2_AVS", 0x08 }, + { "DCDC2_LIMIT", 0x09 }, + { "DCDC3_OP", 0x0A }, + { "DCDC3_AVS", 0x0B }, + { "DCDC3_LIMIT", 0x0C }, + { "DCDC4_OP", 0x0D }, + { "DCDC4_AVS", 0x0E }, + { "DCDC4_LIMIT", 0x0F }, + { "LDO1_OP", 0x10 }, + { "LDO1_AVS", 0x11 }, + { "LDO1_LIMIT", 0x12 }, + { "LDO2_OP", 0x13 }, + { "LDO2_AVS", 0x14 }, + { "LDO2_LIMIT", 0x15 }, + { "LDO3_OP", 0x16 }, + { "LDO3_AVS", 0x17 }, + { "LDO3_LIMIT", 0x18 }, + { "LDO4_OP", 0x19 }, + { "LDO4_AVS", 0x1A }, + { "LDO4_LIMIT", 0x1B }, + { "LDO5", 0x1C }, + { "LDO6", 0x1D }, + { "LDO7", 0x1E }, + { "LDO8", 0x1F }, + { "LDO9", 0x20 }, + { "LDO10", 0x21 }, + { "THRM", 0x22 }, + { "CLK32OUT", 0x23 }, + { "DEVCTRL", 0x24 }, + { "DEVCTRL2", 0x25 }, + { "I2C_SPI_CFG", 0x26 }, + { "KEEP_ON", 0x27 }, + { "KEEP_ON2", 0x28 }, + { "SET_OFF1", 0x29 }, + { "SET_OFF2", 0x2A }, + { "DEF_VOLT", 0x2B }, + { "DEF_VOLT_MAPPING", 0x2C }, + { "DISCHARGE", 0x2D }, + { "DISCHARGE2", 0x2E }, + { "EN1_SET1", 0x2F }, + { "EN1_SET2", 0x30 }, + { "EN2_SET1", 0x31 }, + { "EN2_SET2", 0x32 }, + { "EN3_SET1", 0x33 }, + { "EN3_SET2", 0x34 }, + { "EN4_SET1", 0x35 }, + { "EN4_SET2", 0x36 }, + { "PGOOD", 0x37 }, + { "PGOOD2", 0x38 }, + { "INT_STS", 0x39 }, + { "INT_MSK", 0x3A }, + { "INT_STS2", 0x3B }, + { "INT_MSK2", 0x3C }, + { "INT_STS3", 0x3D }, + { "INT_MSK3", 0x3E }, + { "INT_STS4", 0x3F }, + { "INT_MSK4", 0x40 }, + { "GPIO1", 0x41 }, + { "GPIO2", 0x42 }, + { "GPIO3", 0x43 }, + { "GPIO4", 0x44 }, + { "GPIO5", 0x45 }, + { "VMON", 0x46 }, + { "LEDA_CTRL1", 0x47 }, + { "LEDA_CTRL2", 0x48 }, + { "LEDA_CTRL3", 0x49 }, + { "LEDA_CTRL4", 0x4A }, + { "LEDA_CTRL5", 0x4B }, + { "LEDA_CTRL6", 0x4C }, + { "LEDA_CTRL7", 0x4D }, + { "LEDA_CTRL8", 0x4E }, + { "LEDB_CTRL1", 0x4F }, + { "LEDB_CTRL2", 0x50 }, + { "LEDB_CTRL3", 0x51 }, + { "LEDB_CTRL4", 0x52 }, + { "LEDB_CTRL5", 0x53 }, + { "LEDB_CTRL6", 0x54 }, + { "LEDB_CTRL7", 0x55 }, + { "LEDB_CTRL8", 0x56 }, + { "LEDC_CTRL1", 0x57 }, + { "LEDC_CTRL2", 0x58 }, + { "LEDC_CTRL3", 0x59 }, + { "LEDC_CTRL4", 0x5A }, + { "LEDC_CTRL5", 0x5B }, + { "LEDC_CTRL6", 0x5C }, + { "LEDC_CTRL7", 0x5D }, + { "LEDC_CTRL8", 0x5E }, + { "LED_RAMP_UP_TIME", 0x5F }, + { "LED_RAMP_DOWN_TIME", 0x60 }, + { "LED_SEQ_EN", 0x61 }, + { "LOADSWITCH", 0x62 }, + { "SPARE", 0x63 }, + { "VERNUM", 0x64 }, +}; + +struct tps65912_debugfs_reg_data { + struct tps65912 *tps65912; /* Device */ + u8 reg; /* Register address */ +}; + +struct tps65912_debugfs_data { + struct dentry *root; /* Debugfs directory of the device */ + struct tps65912_debugfs_reg_data reg_data[ARRAY_SIZE(debugfs_regs)]; +}; + +static int reg_read(void *data, u64 *val) +{ + struct tps65912_debugfs_reg_data *reg_data; + + reg_data = (struct tps65912_debugfs_reg_data *) data; + *val = tps65912_reg_read(reg_data->tps65912, reg_data->reg); + return 0; +} + +static int reg_write(void *data, u64 val) +{ + struct tps65912_debugfs_reg_data *reg_data; + + reg_data = (struct tps65912_debugfs_reg_data *) data; + return tps65912_reg_write(reg_data->tps65912, reg_data->reg, val); +} + +DEFINE_SIMPLE_ATTRIBUTE(reg_fops, reg_read, reg_write, "0x%02llx\n"); + +int tps65912_debugfs_create(struct tps65912 *tps65912) +{ + int i; + struct tps65912_debugfs_data *debugfs_data; + + debugfs_data = kzalloc(sizeof(struct tps65912_debugfs_data), + GFP_KERNEL); + if (!debugfs_data) + goto err_data; + + debugfs_data->root = debugfs_create_dir(dev_name(tps65912->dev), NULL); + if (!debugfs_data->root) + goto err_root; + + for (i = 0; i < ARRAY_SIZE(debugfs_regs); i++) { + debugfs_data->reg_data[i].tps65912 = tps65912; + debugfs_data->reg_data[i].reg = debugfs_regs[i].reg; + if (!debugfs_create_file(debugfs_regs[i].name, + S_IRUGO | S_IWUSR, debugfs_data->root, + debugfs_data->reg_data + i, ®_fops)) + goto err_file; + } + + tps65912->debugfs_data = debugfs_data; + return 0; + +err_file: + debugfs_remove_recursive(debugfs_data->root); +err_root: + kfree(debugfs_data); +err_data: + tps65912->debugfs_data = NULL; + return -ENOMEM; +} + +void tps65912_debugfs_remove(struct tps65912 *tps65912) +{ + struct tps65912_debugfs_data *debugfs_data; + + debugfs_data = (struct tps65912_debugfs_data *) tps65912->debugfs_data; + if (debugfs_data) { + debugfs_remove_recursive(debugfs_data->root); + kfree(debugfs_data); + } +} |