6906df1ab8
And also add Kconfig option for selecting ELDO3 voltage. The reason for having this option is that the Android kernel sets ELDO3 to 1.2V when powering up LCD in the case if 'lcd_if' configuration variable is set to 6 (LCD_IF_EXT_DSI) in the FEX file. Most likely to supply power for a SSD2828 chip. However on the MSI Primo81 tablet, which is using this particular 'lcd_if = 6' setup for LCD, setting the ELDO3 voltage appears to be unnecessary and it works regardless. Having no schematics of this tablet, I can only guess that 1.2V is supplied to SSD2828 in some other way. Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/*
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* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
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*
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* X-Powers AXP221 Power Management IC driver
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define AXP221_CHIP_ADDR 0x68
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#define AXP221_CTRL_ADDR 0x3e
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#define AXP221_INIT_DATA 0x3e
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#define AXP223_DEVICE_ADDR 0x3a3
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#define AXP223_RUNTIME_ADDR 0x2d
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#define AXP223_DEVICE_MODE_DATA 0x7c3e00
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/* Page 0 addresses */
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#define AXP221_CHIP_ID 0x03
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#define AXP221_OUTPUT_CTRL1 0x10
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#define AXP221_OUTPUT_CTRL1_DCDC0_EN (1 << 0)
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#define AXP221_OUTPUT_CTRL1_DCDC1_EN (1 << 1)
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#define AXP221_OUTPUT_CTRL1_DCDC2_EN (1 << 2)
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#define AXP221_OUTPUT_CTRL1_DCDC3_EN (1 << 3)
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#define AXP221_OUTPUT_CTRL1_DCDC4_EN (1 << 4)
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#define AXP221_OUTPUT_CTRL1_DCDC5_EN (1 << 5)
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#define AXP221_OUTPUT_CTRL1_ALDO1_EN (1 << 6)
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#define AXP221_OUTPUT_CTRL1_ALDO2_EN (1 << 7)
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#define AXP221_OUTPUT_CTRL2 0x12
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#define AXP221_OUTPUT_CTRL2_ELDO1_EN (1 << 0)
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#define AXP221_OUTPUT_CTRL2_ELDO2_EN (1 << 1)
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#define AXP221_OUTPUT_CTRL2_ELDO3_EN (1 << 2)
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#define AXP221_OUTPUT_CTRL2_DLDO1_EN (1 << 3)
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#define AXP221_OUTPUT_CTRL2_DLDO2_EN (1 << 4)
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#define AXP221_OUTPUT_CTRL2_DLDO3_EN (1 << 5)
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#define AXP221_OUTPUT_CTRL2_DLDO4_EN (1 << 6)
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#define AXP221_OUTPUT_CTRL2_DCDC1SW_EN (1 << 7)
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#define AXP221_OUTPUT_CTRL3 0x13
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#define AXP221_OUTPUT_CTRL3_ALDO3_EN (1 << 7)
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#define AXP221_DLDO1_CTRL 0x15
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#define AXP221_DLDO2_CTRL 0x16
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#define AXP221_DLDO3_CTRL 0x17
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#define AXP221_DLDO4_CTRL 0x18
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#define AXP221_ELDO1_CTRL 0x19
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#define AXP221_ELDO2_CTRL 0x1a
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#define AXP221_ELDO3_CTRL 0x1b
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#define AXP221_DCDC1_CTRL 0x21
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#define AXP221_DCDC2_CTRL 0x22
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#define AXP221_DCDC3_CTRL 0x23
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#define AXP221_DCDC4_CTRL 0x24
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#define AXP221_DCDC5_CTRL 0x25
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#define AXP221_ALDO1_CTRL 0x28
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#define AXP221_ALDO2_CTRL 0x29
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#define AXP221_ALDO3_CTRL 0x2a
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#define AXP221_VBUS_IPSOUT 0x30
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#define AXP221_VBUS_IPSOUT_DRIVEBUS (1 << 2)
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#define AXP221_MISC_CTRL 0x8f
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#define AXP221_MISC_CTRL_N_VBUSEN_FUNC (1 << 4)
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#define AXP221_PAGE 0xff
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/* Page 1 addresses */
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#define AXP221_SID 0x20
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/* We support drivebus control */
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#define AXP_DRIVEBUS
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int axp221_set_dcdc1(unsigned int mvolt);
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int axp221_set_dcdc2(unsigned int mvolt);
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int axp221_set_dcdc3(unsigned int mvolt);
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int axp221_set_dcdc4(unsigned int mvolt);
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int axp221_set_dcdc5(unsigned int mvolt);
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int axp221_set_dldo1(unsigned int mvolt);
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int axp221_set_dldo2(unsigned int mvolt);
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int axp221_set_dldo3(unsigned int mvolt);
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int axp221_set_dldo4(unsigned int mvolt);
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int axp221_set_aldo1(unsigned int mvolt);
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int axp221_set_aldo2(unsigned int mvolt);
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int axp221_set_aldo3(unsigned int mvolt);
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int axp221_set_eldo(int eldo_num, unsigned int mvolt);
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int axp221_init(void);
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int axp221_get_sid(unsigned int *sid);
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int axp_drivebus_enable(void);
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int axp_drivebus_disable(void);
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