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https://github.com/brain-hackers/u-boot-brain
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5d387d0df9
This commit adds emulation of sandbox PMIC device, which includes: - PMIC I2C emulation driver - PMIC I/O driver (UCLASS_PMIC) - PMIC regulator driver (UCLASS_REGULATOR) The sandbox PMIC has 12 significant registers and 4 as padding to 16 bytes, which allows using 'i2c md' command with the default count (16). The sandbox PMIC provides regulators: - 2x BUCK - 2x LDO Each, with adjustable output: - Enable state - Voltage - Current limit (LDO1/BUCK1 only) - Operation mode (different for BUCK and LDO) Each attribute has it's own register, beside the enable state, which depends on operation mode. The header file: sandbox_pmic.h includes PMIC's default register values, which are set on i2c pmic emul driver's probe() method. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Tested on sandbox: Tested-by: Simon Glass <sjg@chromium.org>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/*
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* Copyright (C) 2015 Samsung Electronics
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* Przemyslaw Marczak <p.marczak@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SANDBOX_PMIC_H_
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#define _SANDBOX_PMIC_H_
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#define SANDBOX_LDO_DRIVER "sandbox_ldo"
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#define SANDBOX_OF_LDO_PREFIX "ldo"
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#define SANDBOX_BUCK_DRIVER "sandbox_buck"
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#define SANDBOX_OF_BUCK_PREFIX "buck"
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#define SANDBOX_BUCK_COUNT 2
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#define SANDBOX_LDO_COUNT 2
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/*
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* Sandbox PMIC registers:
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* We have only 12 significant registers, but we alloc 16 for padding.
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*/
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enum {
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SANDBOX_PMIC_REG_BUCK1_UV = 0,
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SANDBOX_PMIC_REG_BUCK1_UA,
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SANDBOX_PMIC_REG_BUCK1_OM,
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SANDBOX_PMIC_REG_BUCK2_UV,
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SANDBOX_PMIC_REG_BUCK2_UA,
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SANDBOX_PMIC_REG_BUCK2_OM,
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SANDBOX_PMIC_REG_LDO_OFFSET,
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SANDBOX_PMIC_REG_LDO1_UV = SANDBOX_PMIC_REG_LDO_OFFSET,
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SANDBOX_PMIC_REG_LDO1_UA,
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SANDBOX_PMIC_REG_LDO1_OM,
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SANDBOX_PMIC_REG_LDO2_UV,
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SANDBOX_PMIC_REG_LDO2_UA,
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SANDBOX_PMIC_REG_LDO2_OM,
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SANDBOX_PMIC_REG_COUNT = 16,
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};
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/* Register offset for output: micro Volts, micro Amps, Operation Mode */
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enum {
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OUT_REG_UV = 0,
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OUT_REG_UA,
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OUT_REG_OM,
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OUT_REG_COUNT,
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};
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/* Buck operation modes */
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enum {
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BUCK_OM_OFF = 0,
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BUCK_OM_ON,
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BUCK_OM_PWM,
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BUCK_OM_COUNT,
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};
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/* Ldo operation modes */
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enum {
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LDO_OM_OFF = 0,
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LDO_OM_ON,
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LDO_OM_SLEEP,
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LDO_OM_STANDBY,
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LDO_OM_COUNT,
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};
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/* BUCK1 Voltage: min: 0.8V, step: 25mV, max 2.4V */
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#define OUT_BUCK1_UV_MIN 800000
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#define OUT_BUCK1_UV_MAX 2400000
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#define OUT_BUCK1_UV_STEP 25000
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/* BUCK1 Amperage: min: 150mA, step: 25mA, max: 250mA */
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#define OUT_BUCK1_UA_MIN 150000
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#define OUT_BUCK1_UA_MAX 250000
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#define OUT_BUCK1_UA_STEP 25000
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/* BUCK2 Voltage: min: 0.75V, step: 50mV, max 3.95V */
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#define OUT_BUCK2_UV_MIN 750000
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#define OUT_BUCK2_UV_MAX 3950000
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#define OUT_BUCK2_UV_STEP 50000
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/* LDO1 Voltage: min: 0.8V, step: 25mV, max 2.4V */
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#define OUT_LDO1_UV_MIN 800000
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#define OUT_LDO1_UV_MAX 2400000
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#define OUT_LDO1_UV_STEP 25000
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/* LDO1 Amperage: min: 100mA, step: 50mA, max: 200mA */
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#define OUT_LDO1_UA_MIN 100000
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#define OUT_LDO1_UA_MAX 200000
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#define OUT_LDO1_UA_STEP 50000
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/* LDO2 Voltage: min: 0.75V, step: 50mV, max 3.95V */
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#define OUT_LDO2_UV_MIN 750000
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#define OUT_LDO2_UV_MAX 3950000
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#define OUT_LDO2_UV_STEP 50000
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/* register <-> value conversion */
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#define REG2VAL(min, step, reg) ((min) + ((step) * (reg)))
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#define VAL2REG(min, step, val) (((val) - (min)) / (step))
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/* Operation mode id -> register value conversion */
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#define OM2REG(x) (x)
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#endif
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