* Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson.
* License Terms: GNU General Public License v2
*/
+/*
+ * AB8500 register access
+ * ======================
+ *
+ * read:
+ * # echo BANK > <debugfs>/ab8500/register-bank
+ * # echo ADDR > <debugfs>/ab8500/register-address
+ * # cat <debugfs>/ab8500/register-value
+ *
+ * write:
+ * # echo BANK > <debugfs>/ab8500/register-bank
+ * # echo ADDR > <debugfs>/ab8500/register-address
+ * # echo VALUE > <debugfs>/ab8500/register-value
+ *
+ * read all registers from a bank:
+ * # echo BANK > <debugfs>/ab8500/register-bank
+ * # cat <debugfs>/ab8500/all-bank-register
+ *
+ * BANK target AB8500 register bank
+ * ADDR target AB8500 register address
+ * VALUE decimal or 0x-prefixed hexadecimal
+ *
+ *
+ * User Space notification on AB8500 IRQ
+ * =====================================
+ *
+ * Allows user space entity to be notified when target AB8500 IRQ occurs.
+ * When subscribed, a sysfs entry is created in ab8500.i2c platform device.
+ * One can pool this file to get target IRQ occurence information.
+ *
+ * subscribe to an AB8500 IRQ:
+ * # echo IRQ > <debugfs>/ab8500/irq-subscribe
+ *
+ * unsubscribe from an AB8500 IRQ:
+ * # echo IRQ > <debugfs>/ab8500/irq-unsubscribe
+ *
+ *
+ * AB8500 register formated read/write access
+ * ==========================================
+ *
+ * Read: read data, data>>SHIFT, data&=MASK, output data
+ * [0xABCDEF98] shift=12 mask=0xFFF => 0x00000CDE
+ * Write: read data, data &= ~(MASK<<SHIFT), data |= (VALUE<<SHIFT), write data
+ * [0xABCDEF98] shift=12 mask=0xFFF value=0x123 => [0xAB123F98]
+ *
+ * Usage:
+ * # echo "CMD [OPTIONS] BANK ADRESS [VALUE]" > $debugfs/ab8500/hwreg
+ *
+ * CMD read read access
+ * write write access
+ *
+ * BANK target reg bank
+ * ADDRESS target reg address
+ * VALUE (write) value to be updated
+ *
+ * OPTIONS
+ * -d|-dec (read) output in decimal
+ * -h|-hexa (read) output in 0x-hexa (default)
+ * -l|-w|-b 32bit (default), 16bit or 8bit reg access
+ * -m|-mask MASK 0x-hexa mask (default 0xFFFFFFFF)
+ * -s|-shift SHIFT bit shift value (read:left, write:right)
+ * -o|-offset OFFSET address offset to add to ADDRESS value
+ *
+ * Warning: bit shift operation is applied to bit-mask.
+ * Warning: bit shift direction depends on read or right command.
+ */
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/kobject.h>
+#include <linux/slab.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/string.h>
+#include <linux/ctype.h>
+#endif
static u32 debug_bank;
static u32 debug_address;
+static int irq_first;
+static int irq_last;
+static u32 *irq_count;
+static int num_irqs;
+
+static struct device_attribute **dev_attr;
+static char **event_name;
+
/**
* struct ab8500_reg_range
* @first: the first address of the range
const struct ab8500_reg_range *range;
};
+/* hwreg- "mask" and "shift" entries ressources */
+struct hwreg_cfg {
+ u32 bank; /* target bank */
+ u32 addr; /* target address */
+ uint fmt; /* format */
+ uint mask; /* read/write mask, applied before any bit shift */
+ int shift; /* bit shift (read:right shift, write:left shift */
+};
+/* fmt bit #0: 0=hexa, 1=dec */
+#define REG_FMT_DEC(c) ((c)->fmt & 0x1)
+#define REG_FMT_HEX(c) (!REG_FMT_DEC(c))
+
+static struct hwreg_cfg hwreg_cfg = {
+ .addr = 0, /* default: invalid phys addr */
+ .fmt = 0, /* default: 32bit access, hex output */
+ .mask = 0xFFFFFFFF, /* default: no mask */
+ .shift = 0, /* default: no bit shift */
+};
+
#define AB8500_NAME_STRING "ab8500"
-#define AB8500_NUM_BANKS 22
+#define AB8500_ADC_NAME_STRING "gpadc"
+#define AB8500_NUM_BANKS 24
#define AB8500_REV_REG 0x80
static struct ab8500_prcmu_ranges debug_ranges[AB8500_NUM_BANKS] = {
[0x0] = {
.num_ranges = 0,
- .range = 0,
+ .range = NULL,
},
[AB8500_SYS_CTRL1_BLOCK] = {
.num_ranges = 3,
},
},
[AB8500_CHARGER] = {
- .num_ranges = 8,
+ .num_ranges = 9,
.range = (struct ab8500_reg_range[]) {
{
.first = 0x00,
.first = 0xC0,
.last = 0xC2,
},
+ {
+ .first = 0xf5,
+ .last = 0xf6,
+ },
},
},
[AB8500_GAS_GAUGE] = {
},
},
},
+ [AB8500_DEVELOPMENT] = {
+ .num_ranges = 1,
+ .range = (struct ab8500_reg_range[]) {
+ {
+ .first = 0x00,
+ .last = 0x00,
+ },
+ },
+ },
+ [AB8500_DEBUG] = {
+ .num_ranges = 1,
+ .range = (struct ab8500_reg_range[]) {
+ {
+ .first = 0x05,
+ .last = 0x07,
+ },
+ },
+ },
[AB8500_AUDIO] = {
.num_ranges = 1,
.range = (struct ab8500_reg_range[]) {
},
};
-static int ab8500_registers_print(struct seq_file *s, void *p)
+static irqreturn_t ab8500_debug_handler(int irq, void *data)
{
- struct device *dev = s->private;
- unsigned int i;
- u32 bank = debug_bank;
+ char buf[16];
+ struct kobject *kobj = (struct kobject *)data;
+ unsigned int irq_abb = irq - irq_first;
- seq_printf(s, AB8500_NAME_STRING " register values:\n");
+ if (irq_abb < num_irqs)
+ irq_count[irq_abb]++;
+ /*
+ * This makes it possible to use poll for events (POLLPRI | POLLERR)
+ * from userspace on sysfs file named <irq-nr>
+ */
+ sprintf(buf, "%d", irq);
+ sysfs_notify(kobj, NULL, buf);
+
+ return IRQ_HANDLED;
+}
+
+/* Prints to seq_file or log_buf */
+static int ab8500_registers_print(struct device *dev, u32 bank,
+ struct seq_file *s)
+{
+ unsigned int i;
- seq_printf(s, " bank %u:\n", bank);
for (i = 0; i < debug_ranges[bank].num_ranges; i++) {
u32 reg;
return err;
}
- err = seq_printf(s, " [%u/0x%02X]: 0x%02X\n", bank,
- reg, value);
- if (err < 0) {
- dev_err(dev, "seq_printf overflow\n");
- /* Error is not returned here since
- * the output is wanted in any case */
- return 0;
+ if (s) {
+ err = seq_printf(s, " [%u/0x%02X]: 0x%02X\n",
+ bank, reg, value);
+ if (err < 0) {
+ dev_err(dev,
+ "seq_printf overflow bank=%d reg=%d\n",
+ bank, reg);
+ /* Error is not returned here since
+ * the output is wanted in any case */
+ return 0;
+ }
+ } else {
+ printk(KERN_INFO" [%u/0x%02X]: 0x%02X\n", bank,
+ reg, value);
}
}
}
return 0;
}
+static int ab8500_print_bank_registers(struct seq_file *s, void *p)
+{
+ struct device *dev = s->private;
+ u32 bank = debug_bank;
+
+ seq_printf(s, AB8500_NAME_STRING " register values:\n");
+
+ seq_printf(s, " bank %u:\n", bank);
+
+ ab8500_registers_print(dev, bank, s);
+ return 0;
+}
+
static int ab8500_registers_open(struct inode *inode, struct file *file)
{
- return single_open(file, ab8500_registers_print, inode->i_private);
+ return single_open(file, ab8500_print_bank_registers, inode->i_private);
}
static const struct file_operations ab8500_registers_fops = {
.owner = THIS_MODULE,
};
+static int ab8500_print_all_banks(struct seq_file *s, void *p)
+{
+ struct device *dev = s->private;
+ unsigned int i;
+ int err;
+
+ seq_printf(s, AB8500_NAME_STRING " register values:\n");
+
+ for (i = 1; i < AB8500_NUM_BANKS; i++) {
+ err = seq_printf(s, " bank %u:\n", i);
+ if (err < 0)
+ dev_err(dev, "seq_printf overflow, bank=%d\n", i);
+
+ ab8500_registers_print(dev, i, s);
+ }
+ return 0;
+}
+
+/* Dump registers to kernel log */
+void ab8500_dump_all_banks(struct device *dev)
+{
+ unsigned int i;
+
+ printk(KERN_INFO"ab8500 register values:\n");
+
+ for (i = 1; i < AB8500_NUM_BANKS; i++) {
+ printk(KERN_INFO" bank %u:\n", i);
+ ab8500_registers_print(dev, i, NULL);
+ }
+}
+
+static int ab8500_all_banks_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *s;
+ int err;
+
+ err = single_open(file, ab8500_print_all_banks, inode->i_private);
+ if (!err) {
+ /* Default buf size in seq_read is not enough */
+ s = (struct seq_file *)file->private_data;
+ s->size = (PAGE_SIZE * 2);
+ s->buf = kmalloc(s->size, GFP_KERNEL);
+ if (!s->buf) {
+ single_release(inode, file);
+ err = -ENOMEM;
+ }
+ }
+ return err;
+}
+
+static const struct file_operations ab8500_all_banks_fops = {
+ .open = ab8500_all_banks_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
static int ab8500_bank_print(struct seq_file *s, void *p)
{
return seq_printf(s, "%d\n", debug_bank);
return count;
}
+/*
+ * Interrupt status
+ */
+static u32 num_interrupts[AB8500_MAX_NR_IRQS];
+static int num_interrupt_lines;
+
+void ab8500_debug_register_interrupt(int line)
+{
+ if (line < num_interrupt_lines)
+ num_interrupts[line]++;
+}
+
+static int ab8500_interrupts_print(struct seq_file *s, void *p)
+{
+ int line;
+
+ seq_printf(s, "irq: number of\n");
+
+ for (line = 0; line < num_interrupt_lines; line++)
+ seq_printf(s, "%3i: %6i\n", line, num_interrupts[line]);
+
+ return 0;
+}
+
+static int ab8500_interrupts_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_interrupts_print, inode->i_private);
+}
+
+/*
+ * - HWREG DB8500 formated routines
+ */
+static int ab8500_hwreg_print(struct seq_file *s, void *d)
+{
+ struct device *dev = s->private;
+ int ret;
+ u8 regvalue;
+
+ ret = abx500_get_register_interruptible(dev,
+ (u8)hwreg_cfg.bank, (u8)hwreg_cfg.addr, ®value);
+ if (ret < 0) {
+ dev_err(dev, "abx500_get_reg fail %d, %d\n",
+ ret, __LINE__);
+ return -EINVAL;
+ }
+
+ if (hwreg_cfg.shift >= 0)
+ regvalue >>= hwreg_cfg.shift;
+ else
+ regvalue <<= -hwreg_cfg.shift;
+ regvalue &= hwreg_cfg.mask;
+
+ if (REG_FMT_DEC(&hwreg_cfg))
+ seq_printf(s, "%d\n", regvalue);
+ else
+ seq_printf(s, "0x%02X\n", regvalue);
+ return 0;
+}
+
+static int ab8500_hwreg_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_hwreg_print, inode->i_private);
+}
+
+static int ab8500_gpadc_bat_ctrl_print(struct seq_file *s, void *p)
+{
+ int bat_ctrl_raw;
+ int bat_ctrl_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ bat_ctrl_raw = ab8500_gpadc_read_raw(gpadc, BAT_CTRL);
+ bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ BAT_CTRL, bat_ctrl_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ bat_ctrl_convert, bat_ctrl_raw);
+}
+
+static int ab8500_gpadc_bat_ctrl_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_bat_ctrl_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_bat_ctrl_fops = {
+ .open = ab8500_gpadc_bat_ctrl_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_btemp_ball_print(struct seq_file *s, void *p)
+{
+ int btemp_ball_raw;
+ int btemp_ball_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ btemp_ball_raw = ab8500_gpadc_read_raw(gpadc, BTEMP_BALL);
+ btemp_ball_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
+ btemp_ball_raw);
+
+ return seq_printf(s,
+ "%d,0x%X\n", btemp_ball_convert, btemp_ball_raw);
+}
+
+static int ab8500_gpadc_btemp_ball_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_btemp_ball_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_btemp_ball_fops = {
+ .open = ab8500_gpadc_btemp_ball_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_main_charger_v_print(struct seq_file *s, void *p)
+{
+ int main_charger_v_raw;
+ int main_charger_v_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ main_charger_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_V);
+ main_charger_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ MAIN_CHARGER_V, main_charger_v_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ main_charger_v_convert, main_charger_v_raw);
+}
+
+static int ab8500_gpadc_main_charger_v_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_main_charger_v_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_main_charger_v_fops = {
+ .open = ab8500_gpadc_main_charger_v_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_acc_detect1_print(struct seq_file *s, void *p)
+{
+ int acc_detect1_raw;
+ int acc_detect1_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ acc_detect1_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT1);
+ acc_detect1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ACC_DETECT1,
+ acc_detect1_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ acc_detect1_convert, acc_detect1_raw);
+}
+
+static int ab8500_gpadc_acc_detect1_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_acc_detect1_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_acc_detect1_fops = {
+ .open = ab8500_gpadc_acc_detect1_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_acc_detect2_print(struct seq_file *s, void *p)
+{
+ int acc_detect2_raw;
+ int acc_detect2_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ acc_detect2_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT2);
+ acc_detect2_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ ACC_DETECT2, acc_detect2_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ acc_detect2_convert, acc_detect2_raw);
+}
+
+static int ab8500_gpadc_acc_detect2_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_acc_detect2_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_acc_detect2_fops = {
+ .open = ab8500_gpadc_acc_detect2_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_aux1_print(struct seq_file *s, void *p)
+{
+ int aux1_raw;
+ int aux1_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ aux1_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX1);
+ aux1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX1,
+ aux1_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ aux1_convert, aux1_raw);
+}
+
+static int ab8500_gpadc_aux1_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_aux1_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_aux1_fops = {
+ .open = ab8500_gpadc_aux1_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_aux2_print(struct seq_file *s, void *p)
+{
+ int aux2_raw;
+ int aux2_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ aux2_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX2);
+ aux2_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX2,
+ aux2_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ aux2_convert, aux2_raw);
+}
+
+static int ab8500_gpadc_aux2_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_aux2_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_aux2_fops = {
+ .open = ab8500_gpadc_aux2_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_main_bat_v_print(struct seq_file *s, void *p)
+{
+ int main_bat_v_raw;
+ int main_bat_v_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ main_bat_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_BAT_V);
+ main_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
+ main_bat_v_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ main_bat_v_convert, main_bat_v_raw);
+}
+
+static int ab8500_gpadc_main_bat_v_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_main_bat_v_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_main_bat_v_fops = {
+ .open = ab8500_gpadc_main_bat_v_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_vbus_v_print(struct seq_file *s, void *p)
+{
+ int vbus_v_raw;
+ int vbus_v_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ vbus_v_raw = ab8500_gpadc_read_raw(gpadc, VBUS_V);
+ vbus_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBUS_V,
+ vbus_v_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ vbus_v_convert, vbus_v_raw);
+}
+
+static int ab8500_gpadc_vbus_v_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_vbus_v_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_vbus_v_fops = {
+ .open = ab8500_gpadc_vbus_v_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_main_charger_c_print(struct seq_file *s, void *p)
+{
+ int main_charger_c_raw;
+ int main_charger_c_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ main_charger_c_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_C);
+ main_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ MAIN_CHARGER_C, main_charger_c_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ main_charger_c_convert, main_charger_c_raw);
+}
+
+static int ab8500_gpadc_main_charger_c_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_main_charger_c_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_main_charger_c_fops = {
+ .open = ab8500_gpadc_main_charger_c_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_usb_charger_c_print(struct seq_file *s, void *p)
+{
+ int usb_charger_c_raw;
+ int usb_charger_c_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ usb_charger_c_raw = ab8500_gpadc_read_raw(gpadc, USB_CHARGER_C);
+ usb_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ USB_CHARGER_C, usb_charger_c_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ usb_charger_c_convert, usb_charger_c_raw);
+}
+
+static int ab8500_gpadc_usb_charger_c_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_gpadc_usb_charger_c_print,
+ inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_usb_charger_c_fops = {
+ .open = ab8500_gpadc_usb_charger_c_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_bk_bat_v_print(struct seq_file *s, void *p)
+{
+ int bk_bat_v_raw;
+ int bk_bat_v_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ bk_bat_v_raw = ab8500_gpadc_read_raw(gpadc, BK_BAT_V);
+ bk_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+ BK_BAT_V, bk_bat_v_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ bk_bat_v_convert, bk_bat_v_raw);
+}
+
+static int ab8500_gpadc_bk_bat_v_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_bk_bat_v_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_bk_bat_v_fops = {
+ .open = ab8500_gpadc_bk_bat_v_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_die_temp_print(struct seq_file *s, void *p)
+{
+ int die_temp_raw;
+ int die_temp_convert;
+ struct ab8500_gpadc *gpadc;
+
+ gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ die_temp_raw = ab8500_gpadc_read_raw(gpadc, DIE_TEMP);
+ die_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, DIE_TEMP,
+ die_temp_raw);
+
+ return seq_printf(s, "%d,0x%X\n",
+ die_temp_convert, die_temp_raw);
+}
+
+static int ab8500_gpadc_die_temp_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab8500_gpadc_die_temp_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_die_temp_fops = {
+ .open = ab8500_gpadc_die_temp_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+/*
+ * return length of an ASCII numerical value, 0 is string is not a
+ * numerical value.
+ * string shall start at value 1st char.
+ * string can be tailed with \0 or space or newline chars only.
+ * value can be decimal or hexadecimal (prefixed 0x or 0X).
+ */
+static int strval_len(char *b)
+{
+ char *s = b;
+ if ((*s == '0') && ((*(s+1) == 'x') || (*(s+1) == 'X'))) {
+ s += 2;
+ for (; *s && (*s != ' ') && (*s != '\n'); s++) {
+ if (!isxdigit(*s))
+ return 0;
+ }
+ } else {
+ if (*s == '-')
+ s++;
+ for (; *s && (*s != ' ') && (*s != '\n'); s++) {
+ if (!isdigit(*s))
+ return 0;
+ }
+ }
+ return (int) (s-b);
+}
+
+/*
+ * parse hwreg input data.
+ * update global hwreg_cfg only if input data syntax is ok.
+ */
+static ssize_t hwreg_common_write(char *b, struct hwreg_cfg *cfg,
+ struct device *dev)
+{
+ uint write, val = 0;
+ u8 regvalue;
+ int ret;
+ struct hwreg_cfg loc = {
+ .bank = 0, /* default: invalid phys addr */
+ .addr = 0, /* default: invalid phys addr */
+ .fmt = 0, /* default: 32bit access, hex output */
+ .mask = 0xFFFFFFFF, /* default: no mask */
+ .shift = 0, /* default: no bit shift */
+ };
+
+ /* read or write ? */
+ if (!strncmp(b, "read ", 5)) {
+ write = 0;
+ b += 5;
+ } else if (!strncmp(b, "write ", 6)) {
+ write = 1;
+ b += 6;
+ } else
+ return -EINVAL;
+
+ /* OPTIONS -l|-w|-b -s -m -o */
+ while ((*b == ' ') || (*b == '-')) {
+ if (*(b-1) != ' ') {
+ b++;
+ continue;
+ }
+ if ((!strncmp(b, "-d ", 3)) ||
+ (!strncmp(b, "-dec ", 5))) {
+ b += (*(b+2) == ' ') ? 3 : 5;
+ loc.fmt |= (1<<0);
+ } else if ((!strncmp(b, "-h ", 3)) ||
+ (!strncmp(b, "-hex ", 5))) {
+ b += (*(b+2) == ' ') ? 3 : 5;
+ loc.fmt &= ~(1<<0);
+ } else if ((!strncmp(b, "-m ", 3)) ||
+ (!strncmp(b, "-mask ", 6))) {
+ b += (*(b+2) == ' ') ? 3 : 6;
+ if (strval_len(b) == 0)
+ return -EINVAL;
+ loc.mask = simple_strtoul(b, &b, 0);
+ } else if ((!strncmp(b, "-s ", 3)) ||
+ (!strncmp(b, "-shift ", 7))) {
+ b += (*(b+2) == ' ') ? 3 : 7;
+ if (strval_len(b) == 0)
+ return -EINVAL;
+ loc.shift = simple_strtol(b, &b, 0);
+ } else {
+ return -EINVAL;
+ }
+ }
+ /* get arg BANK and ADDRESS */
+ if (strval_len(b) == 0)
+ return -EINVAL;
+ loc.bank = simple_strtoul(b, &b, 0);
+ while (*b == ' ')
+ b++;
+ if (strval_len(b) == 0)
+ return -EINVAL;
+ loc.addr = simple_strtoul(b, &b, 0);
+
+ if (write) {
+ while (*b == ' ')
+ b++;
+ if (strval_len(b) == 0)
+ return -EINVAL;
+ val = simple_strtoul(b, &b, 0);
+ }
+
+ /* args are ok, update target cfg (mainly for read) */
+ *cfg = loc;
+
+#ifdef ABB_HWREG_DEBUG
+ pr_warn("HWREG request: %s, %s, addr=0x%08X, mask=0x%X, shift=%d"
+ "value=0x%X\n", (write) ? "write" : "read",
+ REG_FMT_DEC(cfg) ? "decimal" : "hexa",
+ cfg->addr, cfg->mask, cfg->shift, val);
+#endif
+
+ if (!write)
+ return 0;
+
+ ret = abx500_get_register_interruptible(dev,
+ (u8)cfg->bank, (u8)cfg->addr, ®value);
+ if (ret < 0) {
+ dev_err(dev, "abx500_get_reg fail %d, %d\n",
+ ret, __LINE__);
+ return -EINVAL;
+ }
+
+ if (cfg->shift >= 0) {
+ regvalue &= ~(cfg->mask << (cfg->shift));
+ val = (val & cfg->mask) << (cfg->shift);
+ } else {
+ regvalue &= ~(cfg->mask >> (-cfg->shift));
+ val = (val & cfg->mask) >> (-cfg->shift);
+ }
+ val = val | regvalue;
+
+ ret = abx500_set_register_interruptible(dev,
+ (u8)cfg->bank, (u8)cfg->addr, (u8)val);
+ if (ret < 0) {
+ pr_err("abx500_set_reg failed %d, %d", ret, __LINE__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static ssize_t ab8500_hwreg_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct device *dev = ((struct seq_file *)(file->private_data))->private;
+ char buf[128];
+ int buf_size, ret;
+
+ /* Get userspace string and assure termination */
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ /* get args and process */
+ ret = hwreg_common_write(buf, &hwreg_cfg, dev);
+ return (ret) ? ret : buf_size;
+}
+
+/*
+ * - irq subscribe/unsubscribe stuff
+ */
+static int ab8500_subscribe_unsubscribe_print(struct seq_file *s, void *p)
+{
+ seq_printf(s, "%d\n", irq_first);
+
+ return 0;
+}
+
+static int ab8500_subscribe_unsubscribe_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, ab8500_subscribe_unsubscribe_print,
+ inode->i_private);
+}
+
+/*
+ * Userspace should use poll() on this file. When an event occur
+ * the blocking poll will be released.
+ */
+static ssize_t show_irq(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ unsigned long name;
+ unsigned int irq_index;
+ int err;
+
+ err = strict_strtoul(attr->attr.name, 0, &name);
+ if (err)
+ return err;
+
+ irq_index = name - irq_first;
+ if (irq_index >= num_irqs)
+ return -EINVAL;
+ else
+ return sprintf(buf, "%u\n", irq_count[irq_index]);
+}
+
+static ssize_t ab8500_subscribe_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct device *dev = ((struct seq_file *)(file->private_data))->private;
+ char buf[32];
+ int buf_size;
+ unsigned long user_val;
+ int err;
+ unsigned int irq_index;
+
+ /* Get userspace string and assure termination */
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ err = strict_strtoul(buf, 0, &user_val);
+ if (err)
+ return -EINVAL;
+ if (user_val < irq_first) {
+ dev_err(dev, "debugfs error input < %d\n", irq_first);
+ return -EINVAL;
+ }
+ if (user_val > irq_last) {
+ dev_err(dev, "debugfs error input > %d\n", irq_last);
+ return -EINVAL;
+ }
+
+ irq_index = user_val - irq_first;
+ if (irq_index >= num_irqs)
+ return -EINVAL;
+
+ /*
+ * This will create a sysfs file named <irq-nr> which userspace can
+ * use to select or poll and get the AB8500 events
+ */
+ dev_attr[irq_index] = kmalloc(sizeof(struct device_attribute),
+ GFP_KERNEL);
+ event_name[irq_index] = kmalloc(buf_size, GFP_KERNEL);
+ sprintf(event_name[irq_index], "%lu", user_val);
+ dev_attr[irq_index]->show = show_irq;
+ dev_attr[irq_index]->store = NULL;
+ dev_attr[irq_index]->attr.name = event_name[irq_index];
+ dev_attr[irq_index]->attr.mode = S_IRUGO;
+ err = sysfs_create_file(&dev->kobj, &dev_attr[irq_index]->attr);
+ if (err < 0) {
+ printk(KERN_ERR "sysfs_create_file failed %d\n", err);
+ return err;
+ }
+
+ err = request_threaded_irq(user_val, NULL, ab8500_debug_handler,
+ IRQF_SHARED | IRQF_NO_SUSPEND,
+ "ab8500-debug", &dev->kobj);
+ if (err < 0) {
+ printk(KERN_ERR "request_threaded_irq failed %d, %lu\n",
+ err, user_val);
+ sysfs_remove_file(&dev->kobj, &dev_attr[irq_index]->attr);
+ return err;
+ }
+
+ return buf_size;
+}
+
+static ssize_t ab8500_unsubscribe_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct device *dev = ((struct seq_file *)(file->private_data))->private;
+ char buf[32];
+ int buf_size;
+ unsigned long user_val;
+ int err;
+ unsigned int irq_index;
+
+ /* Get userspace string and assure termination */
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ err = strict_strtoul(buf, 0, &user_val);
+ if (err)
+ return -EINVAL;
+ if (user_val < irq_first) {
+ dev_err(dev, "debugfs error input < %d\n", irq_first);
+ return -EINVAL;
+ }
+ if (user_val > irq_last) {
+ dev_err(dev, "debugfs error input > %d\n", irq_last);
+ return -EINVAL;
+ }
+
+ irq_index = user_val - irq_first;
+ if (irq_index >= num_irqs)
+ return -EINVAL;
+
+ /* Set irq count to 0 when unsubscribe */
+ irq_count[irq_index] = 0;
+
+ if (dev_attr[irq_index])
+ sysfs_remove_file(&dev->kobj, &dev_attr[irq_index]->attr);
+
+
+ free_irq(user_val, &dev->kobj);
+ kfree(event_name[irq_index]);
+ kfree(dev_attr[irq_index]);
+
+ return buf_size;
+}
+
+/*
+ * - several deubgfs nodes fops
+ */
+
static const struct file_operations ab8500_bank_fops = {
.open = ab8500_bank_open,
.write = ab8500_bank_write,
.owner = THIS_MODULE,
};
+static const struct file_operations ab8500_interrupts_fops = {
+ .open = ab8500_interrupts_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct file_operations ab8500_subscribe_fops = {
+ .open = ab8500_subscribe_unsubscribe_open,
+ .write = ab8500_subscribe_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct file_operations ab8500_unsubscribe_fops = {
+ .open = ab8500_subscribe_unsubscribe_open,
+ .write = ab8500_unsubscribe_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct file_operations ab8500_hwreg_fops = {
+ .open = ab8500_hwreg_open,
+ .write = ab8500_hwreg_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
static struct dentry *ab8500_dir;
-static struct dentry *ab8500_reg_file;
-static struct dentry *ab8500_bank_file;
-static struct dentry *ab8500_address_file;
-static struct dentry *ab8500_val_file;
+static struct dentry *ab8500_gpadc_dir;
static int ab8500_debug_probe(struct platform_device *plf)
{
+ struct dentry *file;
+ int ret = -ENOMEM;
+ struct ab8500 *ab8500;
debug_bank = AB8500_MISC;
debug_address = AB8500_REV_REG & 0x00FF;
+ ab8500 = dev_get_drvdata(plf->dev.parent);
+ num_irqs = ab8500->mask_size;
+
+ irq_count = kzalloc(sizeof(*irq_count)*num_irqs, GFP_KERNEL);
+ if (!irq_count)
+ return -ENOMEM;
+
+ dev_attr = kzalloc(sizeof(*dev_attr)*num_irqs,GFP_KERNEL);
+ if (!dev_attr)
+ goto out_freeirq_count;
+
+ event_name = kzalloc(sizeof(*event_name)*num_irqs, GFP_KERNEL);
+ if (!event_name)
+ goto out_freedev_attr;
+
+ irq_first = platform_get_irq_byname(plf, "IRQ_FIRST");
+ if (irq_first < 0) {
+ dev_err(&plf->dev, "First irq not found, err %d\n",
+ irq_first);
+ ret = irq_first;
+ goto out_freeevent_name;
+ }
+
+ irq_last = platform_get_irq_byname(plf, "IRQ_LAST");
+ if (irq_last < 0) {
+ dev_err(&plf->dev, "Last irq not found, err %d\n",
+ irq_last);
+ ret = irq_last;
+ goto out_freeevent_name;
+ }
+
ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
if (!ab8500_dir)
- goto exit_no_debugfs;
+ goto err;
+
+ ab8500_gpadc_dir = debugfs_create_dir(AB8500_ADC_NAME_STRING,
+ ab8500_dir);
+ if (!ab8500_gpadc_dir)
+ goto err;
+
+ file = debugfs_create_file("all-bank-registers", S_IRUGO,
+ ab8500_dir, &plf->dev, &ab8500_registers_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("all-banks", S_IRUGO,
+ ab8500_dir, &plf->dev, &ab8500_all_banks_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("register-bank", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_bank_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("register-address", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_address_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("register-value", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_val_fops);
+ if (!file)
+ goto err;
- ab8500_reg_file = debugfs_create_file("all-bank-registers",
- S_IRUGO, ab8500_dir, &plf->dev, &ab8500_registers_fops);
- if (!ab8500_reg_file)
- goto exit_destroy_dir;
+ file = debugfs_create_file("irq-subscribe", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_subscribe_fops);
+ if (!file)
+ goto err;
- ab8500_bank_file = debugfs_create_file("register-bank",
- (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_bank_fops);
- if (!ab8500_bank_file)
- goto exit_destroy_reg;
+ if (is_ab8500(ab8500))
+ num_interrupt_lines = AB8500_NR_IRQS;
+ else if (is_ab8505(ab8500))
+ num_interrupt_lines = AB8505_NR_IRQS;
+ else if (is_ab9540(ab8500))
+ num_interrupt_lines = AB9540_NR_IRQS;
- ab8500_address_file = debugfs_create_file("register-address",
- (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
- &ab8500_address_fops);
- if (!ab8500_address_file)
- goto exit_destroy_bank;
+ file = debugfs_create_file("interrupts", (S_IRUGO),
+ ab8500_dir, &plf->dev, &ab8500_interrupts_fops);
+ if (!file)
+ goto err;
- ab8500_val_file = debugfs_create_file("register-value",
- (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_val_fops);
- if (!ab8500_val_file)
- goto exit_destroy_address;
+ file = debugfs_create_file("irq-unsubscribe", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_unsubscribe_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("hwreg", (S_IRUGO | S_IWUSR),
+ ab8500_dir, &plf->dev, &ab8500_hwreg_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("bat_ctrl", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bat_ctrl_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("btemp_ball", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_btemp_ball_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("main_charger_v", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_v_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("acc_detect1", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect1_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("acc_detect2", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect2_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("adc_aux1", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux1_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("adc_aux2", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux2_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("main_bat_v", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_bat_v_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("vbus_v", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_vbus_v_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("main_charger_c", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_c_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("usb_charger_c", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_usb_charger_c_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("bk_bat_v", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bk_bat_v_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR),
+ ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
+ if (!file)
+ goto err;
return 0;
-exit_destroy_address:
- debugfs_remove(ab8500_address_file);
-exit_destroy_bank:
- debugfs_remove(ab8500_bank_file);
-exit_destroy_reg:
- debugfs_remove(ab8500_reg_file);
-exit_destroy_dir:
- debugfs_remove(ab8500_dir);
-exit_no_debugfs:
+err:
+ if (ab8500_dir)
+ debugfs_remove_recursive(ab8500_dir);
dev_err(&plf->dev, "failed to create debugfs entries.\n");
- return -ENOMEM;
+out_freeevent_name:
+ kfree(event_name);
+out_freedev_attr:
+ kfree(dev_attr);
+out_freeirq_count:
+ kfree(irq_count);
+
+ return ret;
}
static int ab8500_debug_remove(struct platform_device *plf)
{
- debugfs_remove(ab8500_val_file);
- debugfs_remove(ab8500_address_file);
- debugfs_remove(ab8500_bank_file);
- debugfs_remove(ab8500_reg_file);
- debugfs_remove(ab8500_dir);
+ debugfs_remove_recursive(ab8500_dir);
+ kfree(event_name);
+ kfree(dev_attr);
+ kfree(irq_count);
return 0;
}
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff