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    Subject[PATCH 15/26] mfd: ab8500-debugfs: Export all AB8500 ADCs as debugfs nodes
    Date
    From: John Beckett <john.beckett@stericsson.com>

    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>
    ---
    drivers/mfd/ab8500-debugfs.c | 486 ++++++++++++++++++++++++++++++++++++++++--
    1 file changed, 465 insertions(+), 21 deletions(-)

    diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
    index 7698d30..aedbcb0 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.
    @@ -1040,6 +1417,7 @@ static const struct file_operations ab8500_hwreg_fops = {
    };

    static struct dentry *ab8500_dir;
    +static struct dentry *ab8500_gpadc_dir;

    static int __devinit ab8500_debug_probe(struct platform_device *plf)
    {
    @@ -1050,14 +1428,14 @@ static int __devinit 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;
    }

    @@ -1065,42 +1443,108 @@ static int __devinit 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;

    --
    1.7.9.5


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