REBASE: power: regulator: rk8xx: Allow input current/charger shutdown…

… configuration The RK818 PMIC contains a charger. Add very basic charger functionality to be able to regulate the USB input current and charger shutdown limits. Change-Id: I17a1fedc198ac60ed9f81d69f415c79f14132f69 Signed-off-by: Wadim Egorov <[email protected]> Reviewed-by: Simon Glass <[email protected]> Acked-by: Philipp Tomsich <[email protected]> Reviewed-by: Philipp Tomsich <[email protected]>
rockchip-linux · Jun 28, 2017 · 88b8ac7 · 88b8ac7
1 parent 6db843b
commit 88b8ac7
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Showing 2 changed files with 36 additions and 0 deletions.
diff --git a/drivers/power/regulator/rk8xx.c b/drivers/power/regulator/rk8xx.c
@@ -30,6 +30,9 @@
 #define RK818_LDO_VSEL_MASK		0x1f
 #define RK818_LDO3_ON_VSEL_MASK	0xf
 #define RK818_BOOST_ON_VSEL_MASK	0xe0
+#define RK818_USB_ILIM_SEL_MASK		0x0f
+#define RK818_USB_CHG_SD_VSEL_MASK	0x70
+
 
 struct rk8xx_reg_info {
 	uint min_uv;
@@ -76,6 +79,14 @@ static const struct rk8xx_reg_info rk818_ldo[] = {
 };
 #endif
 
+static const u16 rk818_chrg_cur_input_array[] = {
+	450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
+};
+
+static const uint rk818_chrg_shutdown_vsel_array[] = {
+	2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
+};
+
 static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
 					     int num)
 {
@@ -353,3 +364,26 @@ int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
 
 	return _buck_set_enable(pmic, buck, true);
 }
+
+int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
+{
+	uint i;
+
+	for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
+		if (current_ma <= rk818_chrg_cur_input_array[i])
+			break;
+
+	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
+}
+
+int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
+{
+	uint i;
+
+	for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
+		if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
+			break;
+
+	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,
+			       i);
+}
diff --git a/include/power/rk8xx_pmic.h b/include/power/rk8xx_pmic.h
@@ -189,5 +189,7 @@ struct rk8xx_priv {
 };
 
 int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt);
+int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma);
+int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt);
 
 #endif