[PATCH 1/8] mfd: axp20x: Add missing registers, and mark more registers volatile

[Hans de Goede <hdegoede@redhat.com>]

From: Bruno Prémont <bonbons@linux-vserver.org>

Add an extra set of registers which is necessary tu support the PMICs
battery charger function, and mark registers which contain status bits,
gpio status, and adc readings as volatile.

Cc: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/mfd/axp20x.c       | 6 ++++++
 include/linux/mfd/axp20x.h | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 6df9155..6ffbc11 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -39,10 +39,16 @@ static const char * const axp20x_model_names[] = {
 static const struct regmap_range axp20x_writeable_ranges[] = {
 	regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
 	regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
+	regmap_reg_range(AXP20X_RDC_H, AXP20X_OCV(15)),
 };
 
 static const struct regmap_range axp20x_volatile_ranges[] = {
+	regmap_reg_range(AXP20X_PWR_INPUT_STATUS, AXP20X_USB_OTG_STATUS),
+	regmap_reg_range(AXP20X_CHRG_CTRL1, AXP20X_CHRG_CTRL2),
 	regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
+	regmap_reg_range(AXP20X_ACIN_V_ADC_H, AXP20X_IPSOUT_V_HIGH_L),
+	regmap_reg_range(AXP20X_GPIO20_SS, AXP20X_GPIO3_CTRL),
+	regmap_reg_range(AXP20X_FG_RES, AXP20X_RDC_L),
 };
 
 static const struct regmap_access_table axp20x_writeable_table = {
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index 95568eb..f4290ae 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -151,6 +151,11 @@ enum {
 #define AXP20X_CC_CTRL			0xb8
 #define AXP20X_FG_RES			0xb9
 
+/* OCV */
+#define AXP20X_RDC_H			0xba
+#define AXP20X_RDC_L			0xbb
+#define AXP20X_OCV(m)			(0xc0 + (m))
+
 /* AXP22X specific registers */
 #define AXP22X_BATLOW_THRES1		0xe6
 
-- 
2.3.6