Allows decreasing initial charge current, e.g. when power
supply is too weak to support both charging and other operations.
Signed-off-by: Marcin Ślusarz <mslus...@renau.com>
Cc: Jagan Teki <ja...@amarulasolutions.com>
Cc: Andre Przywara <andre.przyw...@arm.com>
---
board/sunxi/board.c | 4 ++++
drivers/power/Kconfig | 7 +++++++
drivers/power/axp221.c | 33 +++++++++++++++++++++++++++++++++
include/axp221.h | 3 +++
include/axp_pmic.h | 1 +
5 files changed, 48 insertions(+)
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 824c322a0d..07fccf972a 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -623,6 +623,10 @@ void sunxi_board_init(void)
#if defined CONFIG_AXP809_POWER || defined CONFIG_AXP818_POWER
power_failed |= axp_set_sw(IS_ENABLED(CONFIG_AXP_SW_ON));
#endif
+
+#ifdef CONFIG_AXP221_POWER
+ power_failed |= axp221_set_charge_current(CONFIG_AXP221_CHARGE_CURRENT);
+#endif
#endif /* CONFIG_AXPxxx_POWER */
printf("DRAM:");
gd->ram_size = sunxi_dram_init();
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 4b81aeb749..06b509a383 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -142,6 +142,13 @@ config SY8106A_POWER
endchoice
+config AXP221_CHARGE_CURRENT
+ int "axp221 constant charge current in mA"
+ depends on AXP221_POWER
+ default 1200
+ ---help---
+ Any value between 300 and 2100 in 150 increments, or 0 to disable
charging.
+
config AXP_DCDC1_VOLT
int "axp pmic dcdc1 voltage"
depends on AXP221_POWER || AXP809_POWER || AXP818_POWER
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c
index c22ca03f46..bf48585da0 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -205,6 +205,39 @@ int axp_set_eldo(int eldo_num, unsigned int mvolt)
AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
}
+static u8 axp221_mamp_to_cfg(int mamp, int min, int max, int div)
+{
+ if (mamp < min)
+ mamp = min;
+ else if (mamp > max)
+ mamp = max;
+
+ return (mamp - min) / div;
+}
+
+int axp221_set_charge_current(unsigned int mamp)
+{
+ int ret;
+ u8 cfg, chrg_ctrl;
+
+ cfg = axp221_mamp_to_cfg(mamp, 300, 2100, 150);
+ if (cfg > 0x0f)
+ return -EINVAL;
+
+ ret = pmic_bus_read(AXP221_CHRG_CTRL1, &chrg_ctrl);
+ if (ret)
+ return ret;
+
+ chrg_ctrl = (chrg_ctrl & 0xf0) | cfg;
+
+ if (mamp == 0)
+ chrg_ctrl &= 0x7f;
+ else
+ chrg_ctrl |= 0x80;
+
+ return pmic_bus_write(AXP221_CHRG_CTRL1, chrg_ctrl);
+}
+
int axp_init(void)
{
u8 axp_chip_id;
diff --git a/include/axp221.h b/include/axp221.h
index 32b988f3a9..8eb1792435 100644
--- a/include/axp221.h
+++ b/include/axp221.h
@@ -44,6 +44,9 @@
#define AXP221_ALDO3_CTRL 0x2a
#define AXP221_SHUTDOWN 0x32
#define AXP221_SHUTDOWN_POWEROFF (1 << 7)
+#define AXP221_CHRG_CTRL1 0x33
+#define AXP221_CHRG_CTRL2 0x34
+#define AXP221_CHRG_CTRL3 0x35
#define AXP221_PAGE 0xff
/* Page 1 addresses */
diff --git a/include/axp_pmic.h b/include/axp_pmic.h
index ae62ef0d76..3bcd8f9ca9 100644
--- a/include/axp_pmic.h
+++ b/include/axp_pmic.h
@@ -52,6 +52,7 @@ int axp_set_aldo4(unsigned int mvolt);
int axp_set_dldo(int dldo_num, unsigned int mvolt);
int axp_set_eldo(int eldo_num, unsigned int mvolt);
int axp_set_fldo(int fldo_num, unsigned int mvolt);
+int axp221_set_charge_current(unsigned int mamp);
int axp_set_sw(bool on);
int axp_init(void);
int axp_get_sid(unsigned int *sid);
--
2.25.1
