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The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174930.4063320-1-robh@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
244 lines
6.4 KiB
C
244 lines
6.4 KiB
C
/*
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* pbias-regulator.c
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*
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* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
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* Author: Balaji T K <balajitk@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/mfd/syscon.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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struct pbias_reg_info {
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u32 enable;
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u32 enable_mask;
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u32 disable_val;
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u32 vmode;
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unsigned int enable_time;
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char *name;
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const unsigned int *pbias_volt_table;
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int n_voltages;
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};
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struct pbias_of_data {
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unsigned int offset;
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};
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static const unsigned int pbias_volt_table_3_0V[] = {
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1800000,
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3000000
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};
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static const unsigned int pbias_volt_table_3_3V[] = {
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1800000,
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3300000
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};
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static const struct regulator_ops pbias_regulator_voltage_ops = {
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.list_voltage = regulator_list_voltage_table,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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};
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static const struct pbias_reg_info pbias_mmc_omap2430 = {
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.enable = BIT(1),
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.enable_mask = BIT(1),
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.vmode = BIT(0),
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.disable_val = 0,
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.enable_time = 100,
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.pbias_volt_table = pbias_volt_table_3_0V,
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.n_voltages = 2,
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.name = "pbias_mmc_omap2430"
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};
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static const struct pbias_reg_info pbias_sim_omap3 = {
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.enable = BIT(9),
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.enable_mask = BIT(9),
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.vmode = BIT(8),
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.enable_time = 100,
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.pbias_volt_table = pbias_volt_table_3_0V,
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.n_voltages = 2,
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.name = "pbias_sim_omap3"
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};
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static const struct pbias_reg_info pbias_mmc_omap4 = {
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.enable = BIT(26) | BIT(22),
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.enable_mask = BIT(26) | BIT(25) | BIT(22),
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.disable_val = BIT(25),
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.vmode = BIT(21),
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.enable_time = 100,
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.pbias_volt_table = pbias_volt_table_3_0V,
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.n_voltages = 2,
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.name = "pbias_mmc_omap4"
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};
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static const struct pbias_reg_info pbias_mmc_omap5 = {
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.enable = BIT(27) | BIT(26),
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.enable_mask = BIT(27) | BIT(25) | BIT(26),
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.disable_val = BIT(25),
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.vmode = BIT(21),
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.enable_time = 100,
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.pbias_volt_table = pbias_volt_table_3_3V,
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.n_voltages = 2,
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.name = "pbias_mmc_omap5"
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};
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static struct of_regulator_match pbias_matches[] = {
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{ .name = "pbias_mmc_omap2430", .driver_data = (void *)&pbias_mmc_omap2430},
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{ .name = "pbias_sim_omap3", .driver_data = (void *)&pbias_sim_omap3},
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{ .name = "pbias_mmc_omap4", .driver_data = (void *)&pbias_mmc_omap4},
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{ .name = "pbias_mmc_omap5", .driver_data = (void *)&pbias_mmc_omap5},
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};
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#define PBIAS_NUM_REGS ARRAY_SIZE(pbias_matches)
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/* Offset from SCM general area (and syscon) base */
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static const struct pbias_of_data pbias_of_data_omap2 = {
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.offset = 0x230,
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};
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static const struct pbias_of_data pbias_of_data_omap3 = {
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.offset = 0x2b0,
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};
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static const struct pbias_of_data pbias_of_data_omap4 = {
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.offset = 0x60,
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};
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static const struct pbias_of_data pbias_of_data_omap5 = {
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.offset = 0x60,
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};
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static const struct pbias_of_data pbias_of_data_dra7 = {
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.offset = 0xe00,
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};
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static const struct of_device_id pbias_of_match[] = {
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{ .compatible = "ti,pbias-omap", },
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{ .compatible = "ti,pbias-omap2", .data = &pbias_of_data_omap2, },
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{ .compatible = "ti,pbias-omap3", .data = &pbias_of_data_omap3, },
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{ .compatible = "ti,pbias-omap4", .data = &pbias_of_data_omap4, },
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{ .compatible = "ti,pbias-omap5", .data = &pbias_of_data_omap5, },
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{ .compatible = "ti,pbias-dra7", .data = &pbias_of_data_dra7, },
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{},
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};
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MODULE_DEVICE_TABLE(of, pbias_of_match);
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static int pbias_regulator_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct resource *res;
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struct regulator_config cfg = { };
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struct regulator_desc *desc;
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struct regulator_dev *rdev;
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struct regmap *syscon;
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const struct pbias_reg_info *info;
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int ret, count, idx;
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const struct pbias_of_data *data;
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unsigned int offset;
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count = of_regulator_match(&pdev->dev, np, pbias_matches,
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PBIAS_NUM_REGS);
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if (count < 0)
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return count;
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desc = devm_kcalloc(&pdev->dev, count, sizeof(*desc), GFP_KERNEL);
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if (!desc)
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return -ENOMEM;
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syscon = syscon_regmap_lookup_by_phandle(np, "syscon");
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if (IS_ERR(syscon))
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return PTR_ERR(syscon);
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data = of_device_get_match_data(&pdev->dev);
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if (data) {
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offset = data->offset;
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} else {
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -EINVAL;
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offset = res->start;
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dev_WARN(&pdev->dev,
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"using legacy dt data for pbias offset\n");
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}
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cfg.regmap = syscon;
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cfg.dev = &pdev->dev;
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for (idx = 0; idx < PBIAS_NUM_REGS && count; idx++) {
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if (!pbias_matches[idx].init_data ||
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!pbias_matches[idx].of_node)
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continue;
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info = pbias_matches[idx].driver_data;
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if (!info)
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return -ENODEV;
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desc->name = info->name;
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desc->owner = THIS_MODULE;
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desc->type = REGULATOR_VOLTAGE;
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desc->ops = &pbias_regulator_voltage_ops;
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desc->volt_table = info->pbias_volt_table;
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desc->n_voltages = info->n_voltages;
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desc->enable_time = info->enable_time;
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desc->vsel_reg = offset;
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desc->vsel_mask = info->vmode;
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desc->enable_reg = offset;
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desc->enable_mask = info->enable_mask;
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desc->enable_val = info->enable;
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desc->disable_val = info->disable_val;
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cfg.init_data = pbias_matches[idx].init_data;
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cfg.of_node = pbias_matches[idx].of_node;
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rdev = devm_regulator_register(&pdev->dev, desc, &cfg);
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if (IS_ERR(rdev)) {
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ret = PTR_ERR(rdev);
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dev_err(&pdev->dev,
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"Failed to register regulator: %d\n", ret);
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return ret;
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}
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desc++;
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count--;
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}
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return 0;
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}
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static struct platform_driver pbias_regulator_driver = {
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.probe = pbias_regulator_probe,
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.driver = {
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.name = "pbias-regulator",
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.probe_type = PROBE_PREFER_ASYNCHRONOUS,
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.of_match_table = of_match_ptr(pbias_of_match),
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},
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};
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module_platform_driver(pbias_regulator_driver);
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MODULE_AUTHOR("Balaji T K <balajitk@ti.com>");
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MODULE_DESCRIPTION("pbias voltage regulator");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:pbias-regulator");
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