mfd: ab8500-debugfs: Export all AB8500 ADCs as debugfs nodes

Allow a user to take a glimpse into the inner workings of the
AB8500 Analogue-to-Digital Converters, via debugfs.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: John Beckett <john.beckett@stericsson.com>
Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com>

1 files changed, 465 insertions, 21 deletions

diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 79a954f79732..f32ac976577f 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -82,7 +82,7 @@
 #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>
@@ -143,6 +143,7 @@ static struct hwreg_cfg hwreg_cfg = {
 };
 
 #define AB8500_NAME_STRING "ab8500"
+#define AB8500_ADC_NAME_STRING "gpadc"
 #define AB8500_NUM_BANKS 22
 
 #define AB8500_REV_REG 0x80
@@ -672,6 +673,382 @@ 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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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();
+        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.
@@ -1042,6 +1419,7 @@ static const struct file_operations ab8500_hwreg_fops = {
 };
 
 static struct dentry *ab8500_dir;
+static struct dentry *ab8500_gpadc_dir;
 
 static int ab8500_debug_probe(struct platform_device *plf)
 {
@@ -1052,14 +1430,14 @@ static int ab8500_debug_probe(struct platform_device *plf)
         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);
+                                irq_first);
                 return irq_first;
         }
 
         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);
+                                irq_last);
                 return irq_last;
         }
 
@@ -1067,42 +1445,108 @@ static int ab8500_debug_probe(struct platform_device *plf)
         if (!ab8500_dir)
                 goto err;
 
-        file = debugfs_create_file("all-bank-registers",
-                S_IRUGO, ab8500_dir, &plf->dev, &ab8500_registers_fops);
+        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("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;
+
+        file = debugfs_create_file("irq-subscribe", (S_IRUGO | S_IWUSR),
+            ab8500_dir, &plf->dev, &ab8500_subscribe_fops);
+        if (!file)
+                goto err;
+
+        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("register-bank",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_bank_fops);
+        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("register-address",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
-                &ab8500_address_fops);
+        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("register-value",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev, &ab8500_val_fops);
+        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("irq-subscribe",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
-                &ab8500_subscribe_fops);
+        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("irq-unsubscribe",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
-                &ab8500_unsubscribe_fops);
+        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("hwreg",
-                (S_IRUGO | S_IWUSR), ab8500_dir, &plf->dev,
-                &ab8500_hwreg_fops);
+        file = debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR),
+            ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
         if (!file)
                 goto err;