mfd: ab8500-debug: Add ADC input channel usb_id in debugfs

Signed-off-by: Yang QU <yang.qu@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Alexandre BOURDIOL <alexandre.bourdiol@stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index a653a0747b31..44c9bc1f2544 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -1706,6 +1706,35 @@ static const struct file_operations ab8500_gpadc_die_temp_fops = {
         .owner = THIS_MODULE,
 };
 
+static int ab8500_gpadc_usb_id_print(struct seq_file *s, void *p)
+{
+        int usb_id_raw;
+        int usb_id_convert;
+        struct ab8500_gpadc *gpadc;
+
+        gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+        usb_id_raw = ab8500_gpadc_read_raw(gpadc, USB_ID,
+                avg_sample, trig_edge, trig_timer, conv_type);
+        usb_id_convert = ab8500_gpadc_ad_to_voltage(gpadc, USB_ID,
+                usb_id_raw);
+
+        return seq_printf(s, "%d,0x%X\n",
+                        usb_id_convert, usb_id_raw);
+}
+
+static int ab8500_gpadc_usb_id_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, ab8500_gpadc_usb_id_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_usb_id_fops = {
+        .open = ab8500_gpadc_usb_id_open,
+        .read = seq_read,
+        .llseek = seq_lseek,
+        .release = single_release,
+        .owner = THIS_MODULE,
+};
+
 static int ab8540_gpadc_xtal_temp_print(struct seq_file *s, void *p)
 {
         int xtal_temp_raw;
@@ -2712,6 +2741,12 @@ static int ab8500_debug_probe(struct platform_device *plf)
             ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
         if (!file)
                 goto err;
+
+        file = debugfs_create_file("usb_id", (S_IRUGO | S_IWUGO),
+                ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_usb_id_fops);
+        if (!file)
+                goto err;
+
         if (is_ab8540(ab8500)) {
                 file = debugfs_create_file("xtal_temp", (S_IRUGO | S_IWUGO),
                         ab8500_gpadc_dir, &plf->dev, &ab8540_gpadc_xtal_temp_fops);