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The TPS68470 PMIC provides Clocks, GPIOs and Regulators. At present in the kernel the Regulators and Clocks are controlled by an OpRegion driver designed to work with power control methods defined in ACPI, but some platforms lack those methods, meaning drivers need to be able to consume the resources of these chips through the usual frameworks. This commit adds a driver for the clocks provided by the tps68470, and is designed to bind to the platform_device registered by the intel_skl_int3472 module. This is based on this out of tree driver written by Intel: https://github.com/intel/linux-intel-lts/blob/4.14/base/drivers/clk/clk-tps68470.c with various cleanups added. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20211203102857.44539-7-hdegoede@redhat.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2017 Intel Corporation */
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/* Functions to access TPS68470 power management chip. */
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#ifndef __LINUX_MFD_TPS68470_H
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#define __LINUX_MFD_TPS68470_H
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/* Register addresses */
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#define TPS68470_REG_POSTDIV2 0x06
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#define TPS68470_REG_BOOSTDIV 0x07
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#define TPS68470_REG_BUCKDIV 0x08
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#define TPS68470_REG_PLLSWR 0x09
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#define TPS68470_REG_XTALDIV 0x0A
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#define TPS68470_REG_PLLDIV 0x0B
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#define TPS68470_REG_POSTDIV 0x0C
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#define TPS68470_REG_PLLCTL 0x0D
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#define TPS68470_REG_PLLCTL2 0x0E
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#define TPS68470_REG_CLKCFG1 0x0F
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#define TPS68470_REG_CLKCFG2 0x10
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#define TPS68470_REG_GPCTL0A 0x14
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#define TPS68470_REG_GPCTL0B 0x15
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#define TPS68470_REG_GPCTL1A 0x16
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#define TPS68470_REG_GPCTL1B 0x17
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#define TPS68470_REG_GPCTL2A 0x18
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#define TPS68470_REG_GPCTL2B 0x19
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#define TPS68470_REG_GPCTL3A 0x1A
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#define TPS68470_REG_GPCTL3B 0x1B
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#define TPS68470_REG_GPCTL4A 0x1C
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#define TPS68470_REG_GPCTL4B 0x1D
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#define TPS68470_REG_GPCTL5A 0x1E
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#define TPS68470_REG_GPCTL5B 0x1F
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#define TPS68470_REG_GPCTL6A 0x20
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#define TPS68470_REG_GPCTL6B 0x21
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#define TPS68470_REG_SGPO 0x22
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#define TPS68470_REG_GPDI 0x26
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#define TPS68470_REG_GPDO 0x27
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#define TPS68470_REG_VCMVAL 0x3C
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#define TPS68470_REG_VAUX1VAL 0x3D
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#define TPS68470_REG_VAUX2VAL 0x3E
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#define TPS68470_REG_VIOVAL 0x3F
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#define TPS68470_REG_VSIOVAL 0x40
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#define TPS68470_REG_VAVAL 0x41
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#define TPS68470_REG_VDVAL 0x42
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#define TPS68470_REG_S_I2C_CTL 0x43
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#define TPS68470_REG_VCMCTL 0x44
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#define TPS68470_REG_VAUX1CTL 0x45
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#define TPS68470_REG_VAUX2CTL 0x46
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#define TPS68470_REG_VACTL 0x47
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#define TPS68470_REG_VDCTL 0x48
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#define TPS68470_REG_RESET 0x50
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#define TPS68470_REG_REVID 0xFF
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#define TPS68470_REG_MAX TPS68470_REG_REVID
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/* Register field definitions */
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#define TPS68470_REG_RESET_MASK GENMASK(7, 0)
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#define TPS68470_VAVAL_AVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VDVAL_DVOLT_MASK GENMASK(5, 0)
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#define TPS68470_VCMVAL_VCVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VIOVAL_IOVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VSIOVAL_IOVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VAUX1VAL_AUX1VOLT_MASK GENMASK(6, 0)
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#define TPS68470_VAUX2VAL_AUX2VOLT_MASK GENMASK(6, 0)
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#define TPS68470_VACTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VDCTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VCMCTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_S_I2C_CTL_EN_MASK GENMASK(1, 0)
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#define TPS68470_VAUX1CTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VAUX2CTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_PLL_EN_MASK GENMASK(0, 0)
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#define TPS68470_CLKCFG1_MODE_A_MASK GENMASK(1, 0)
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#define TPS68470_CLKCFG1_MODE_B_MASK GENMASK(3, 2)
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#define TPS68470_CLKCFG2_DRV_STR_2MA 0x05
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#define TPS68470_PLL_OUTPUT_ENABLE 0x02
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#define TPS68470_CLK_SRC_XTAL BIT(0)
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#define TPS68470_PLLSWR_DEFAULT GENMASK(1, 0)
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#define TPS68470_OSC_EXT_CAP_DEFAULT 0x05
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#define TPS68470_OUTPUT_A_SHIFT 0x00
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#define TPS68470_OUTPUT_B_SHIFT 0x02
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#define TPS68470_CLK_SRC_SHIFT GENMASK(2, 0)
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#define TPS68470_OSC_EXT_CAP_SHIFT BIT(2)
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#define TPS68470_GPIO_CTL_REG_A(x) (TPS68470_REG_GPCTL0A + (x) * 2)
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#define TPS68470_GPIO_CTL_REG_B(x) (TPS68470_REG_GPCTL0B + (x) * 2)
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#define TPS68470_GPIO_MODE_MASK GENMASK(1, 0)
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#define TPS68470_GPIO_MODE_IN 0
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#define TPS68470_GPIO_MODE_IN_PULLUP 1
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#define TPS68470_GPIO_MODE_OUT_CMOS 2
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#define TPS68470_GPIO_MODE_OUT_ODRAIN 3
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#endif /* __LINUX_MFD_TPS68470_H */
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