diff options
Diffstat (limited to 'target/linux/ipq40xx/patches-5.4/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch')
| -rw-r--r-- | target/linux/ipq40xx/patches-5.4/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/patches-5.4/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch b/target/linux/ipq40xx/patches-5.4/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch new file mode 100644 index 0000000000..aaf8c807ed --- /dev/null +++ b/target/linux/ipq40xx/patches-5.4/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch @@ -0,0 +1,153 @@ +From 97043d292365ae39d62b54a6d79dff98d048b501 Mon Sep 17 00:00:00 2001 +From: Robert Marko <robert.marko@sartura.hr> +Date: Wed, 22 Jan 2020 12:44:14 +0100 +Subject: [PATCH] From ebf652b408200504194be32ad0a3f5bb49d6000a Mon Sep 17 + 00:00:00 2001 From: Robert Marko <robert.marko@sartura.hr> Date: Sun, 12 Jan + 2020 12:30:01 +0100 Subject: [PATCH] regulator: add IPQ4019 SDHCI VQMMC LDO + driver + +This introduces the IPQ4019 VQMMC LDO driver needed for +the SD/EMMC driver I/O level operation. +This will enable introducing SD/EMMC support for the built-in controller. + +Signed-off-by: Mantas Pucka <mantas@8devices.com> +Signed-off-by: Robert Marko <robert.marko@sartura.hr> +Link: https://lore.kernel.org/r/20200112113003.11110-1-robert.marko@sartura.hr +Signed-off-by: Mark Brown <broonie@kernel.org> +--- + drivers/regulator/Kconfig | 7 ++ + drivers/regulator/Makefile | 1 + + drivers/regulator/vqmmc-ipq4019-regulator.c | 101 ++++++++++++++++++++ + 3 files changed, 109 insertions(+) + create mode 100644 drivers/regulator/vqmmc-ipq4019-regulator.c + +--- a/drivers/regulator/Kconfig ++++ b/drivers/regulator/Kconfig +@@ -1077,6 +1077,13 @@ config REGULATOR_VEXPRESS + This driver provides support for voltage regulators available + on the ARM Ltd's Versatile Express platform. + ++config REGULATOR_VQMMC_IPQ4019 ++ tristate "IPQ4019 VQMMC SD LDO regulator support" ++ depends on ARCH_QCOM ++ help ++ This driver provides support for the VQMMC LDO I/0 ++ voltage regulator of the IPQ4019 SD/EMMC controller. ++ + config REGULATOR_WM831X + tristate "Wolfson Microelectronics WM831x PMIC regulators" + depends on MFD_WM831X +--- a/drivers/regulator/Makefile ++++ b/drivers/regulator/Makefile +@@ -132,6 +132,7 @@ obj-$(CONFIG_REGULATOR_TWL4030) += twl-r + obj-$(CONFIG_REGULATOR_UNIPHIER) += uniphier-regulator.o + obj-$(CONFIG_REGULATOR_VCTRL) += vctrl-regulator.o + obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress-regulator.o ++obj-$(CONFIG_REGULATOR_VQMMC_IPQ4019) += vqmmc-ipq4019-regulator.o + obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o + obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o + obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o +--- /dev/null ++++ b/drivers/regulator/vqmmc-ipq4019-regulator.c +@@ -0,0 +1,101 @@ ++// SPDX-License-Identifier: GPL-2.0+ ++// ++// Copyright (c) 2019 Mantas Pucka <mantas@8devices.com> ++// Copyright (c) 2019 Robert Marko <robert.marko@sartura.hr> ++// ++// Driver for IPQ4019 SD/MMC controller's I/O LDO voltage regulator ++ ++#include <linux/io.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/platform_device.h> ++#include <linux/regmap.h> ++#include <linux/regulator/driver.h> ++#include <linux/regulator/machine.h> ++#include <linux/regulator/of_regulator.h> ++ ++static const unsigned int ipq4019_vmmc_voltages[] = { ++ 1500000, 1800000, 2500000, 3000000, ++}; ++ ++static const struct regulator_ops ipq4019_regulator_voltage_ops = { ++ .list_voltage = regulator_list_voltage_table, ++ .map_voltage = regulator_map_voltage_ascend, ++ .get_voltage_sel = regulator_get_voltage_sel_regmap, ++ .set_voltage_sel = regulator_set_voltage_sel_regmap, ++}; ++ ++static const struct regulator_desc vmmc_regulator = { ++ .name = "vmmcq", ++ .ops = &ipq4019_regulator_voltage_ops, ++ .type = REGULATOR_VOLTAGE, ++ .owner = THIS_MODULE, ++ .volt_table = ipq4019_vmmc_voltages, ++ .n_voltages = ARRAY_SIZE(ipq4019_vmmc_voltages), ++ .vsel_reg = 0, ++ .vsel_mask = 0x3, ++}; ++ ++static const struct regmap_config ipq4019_vmmcq_regmap_config = { ++ .reg_bits = 32, ++ .reg_stride = 4, ++ .val_bits = 32, ++}; ++ ++static int ipq4019_regulator_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct regulator_init_data *init_data; ++ struct regulator_config cfg = {}; ++ struct regulator_dev *rdev; ++ struct resource *res; ++ struct regmap *rmap; ++ void __iomem *base; ++ ++ init_data = of_get_regulator_init_data(dev, dev->of_node, ++ &vmmc_regulator); ++ if (!init_data) ++ return -EINVAL; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ rmap = devm_regmap_init_mmio(dev, base, &ipq4019_vmmcq_regmap_config); ++ if (IS_ERR(rmap)) ++ return PTR_ERR(rmap); ++ ++ cfg.dev = dev; ++ cfg.init_data = init_data; ++ cfg.of_node = dev->of_node; ++ cfg.regmap = rmap; ++ ++ rdev = devm_regulator_register(dev, &vmmc_regulator, &cfg); ++ if (IS_ERR(rdev)) { ++ dev_err(dev, "Failed to register regulator: %ld\n", ++ PTR_ERR(rdev)); ++ return PTR_ERR(rdev); ++ } ++ platform_set_drvdata(pdev, rdev); ++ ++ return 0; ++} ++ ++static const struct of_device_id regulator_ipq4019_of_match[] = { ++ { .compatible = "qcom,vqmmc-ipq4019-regulator", }, ++ {}, ++}; ++ ++static struct platform_driver ipq4019_regulator_driver = { ++ .probe = ipq4019_regulator_probe, ++ .driver = { ++ .name = "vqmmc-ipq4019-regulator", ++ .of_match_table = of_match_ptr(regulator_ipq4019_of_match), ++ }, ++}; ++module_platform_driver(ipq4019_regulator_driver); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Mantas Pucka <mantas@8devices.com>"); ++MODULE_DESCRIPTION("IPQ4019 VQMMC voltage regulator"); |