From ea08eeccae9297f7aabd2ef7f0c2517ac4549acc Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:18:26 +0000
Subject: [PATCH] write in 30M
---
kernel/drivers/regulator/wm831x-dcdc.c | 129 +++++++++++-------------------------------
1 files changed, 35 insertions(+), 94 deletions(-)
diff --git a/kernel/drivers/regulator/wm831x-dcdc.c b/kernel/drivers/regulator/wm831x-dcdc.c
index df59143..e43ed4d 100644
--- a/kernel/drivers/regulator/wm831x-dcdc.c
+++ b/kernel/drivers/regulator/wm831x-dcdc.c
@@ -1,15 +1,10 @@
-/*
- * wm831x-dcdc.c -- DC-DC buck convertor driver for the WM831x series
- *
- * Copyright 2009 Wolfson Microelectronics PLC.
- *
- * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
+// SPDX-License-Identifier: GPL-2.0+
+//
+// wm831x-dcdc.c -- DC-DC buck converter driver for the WM831x series
+//
+// Copyright 2009 Wolfson Microelectronics PLC.
+//
+// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -20,7 +15,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/mfd/wm831x/core.h>
@@ -55,7 +50,7 @@
int base;
struct wm831x *wm831x;
struct regulator_dev *regulator;
- int dvs_gpio;
+ struct gpio_desc *dvs_gpiod;
int dvs_gpio_state;
int on_vsel;
int dvs_vsel;
@@ -205,33 +200,10 @@
* BUCKV specifics
*/
-static int wm831x_buckv_list_voltage(struct regulator_dev *rdev,
- unsigned selector)
-{
- if (selector <= 0x8)
- return 600000;
- if (selector <= WM831X_BUCKV_MAX_SELECTOR)
- return 600000 + ((selector - 0x8) * 12500);
- return -EINVAL;
-}
-
-static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
-{
- u16 vsel;
-
- if (min_uV < 600000)
- vsel = 0;
- else if (min_uV <= 1800000)
- vsel = DIV_ROUND_UP(min_uV - 600000, 12500) + 8;
- else
- return -EINVAL;
-
- if (wm831x_buckv_list_voltage(rdev, vsel) > max_uV)
- return -EINVAL;
-
- return vsel;
-}
+static const struct linear_range wm831x_buckv_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0, 0x7, 0),
+ REGULATOR_LINEAR_RANGE(600000, 0x8, 0x68, 12500),
+};
static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state)
{
@@ -241,7 +213,7 @@
return 0;
dcdc->dvs_gpio_state = state;
- gpio_set_value(dcdc->dvs_gpio, state);
+ gpiod_set_value(dcdc->dvs_gpiod, state);
/* Should wait for DVS state change to be asserted if we have
* a GPIO for it, for now assume the device is configured
@@ -261,10 +233,10 @@
int ret;
/* If this value is already set then do a GPIO update if we can */
- if (dcdc->dvs_gpio && dcdc->on_vsel == vsel)
+ if (dcdc->dvs_gpiod && dcdc->on_vsel == vsel)
return wm831x_buckv_set_dvs(rdev, 0);
- if (dcdc->dvs_gpio && dcdc->dvs_vsel == vsel)
+ if (dcdc->dvs_gpiod && dcdc->dvs_vsel == vsel)
return wm831x_buckv_set_dvs(rdev, 1);
/* Always set the ON status to the minimum voltage */
@@ -273,7 +245,7 @@
return ret;
dcdc->on_vsel = vsel;
- if (!dcdc->dvs_gpio)
+ if (!dcdc->dvs_gpiod)
return ret;
/* Kick the voltage transition now */
@@ -309,7 +281,7 @@
u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
int vsel;
- vsel = wm831x_buckv_map_voltage(rdev, uV, uV);
+ vsel = regulator_map_voltage_linear_range(rdev, uV, uV);
if (vsel < 0)
return vsel;
@@ -320,7 +292,7 @@
{
struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
- if (dcdc->dvs_gpio && dcdc->dvs_gpio_state)
+ if (dcdc->dvs_gpiod && dcdc->dvs_gpio_state)
return dcdc->dvs_vsel;
else
return dcdc->on_vsel;
@@ -331,48 +303,14 @@
125000, 250000, 375000, 500000, 625000, 750000, 875000, 1000000
};
-static int wm831x_buckv_set_current_limit(struct regulator_dev *rdev,
- int min_uA, int max_uA)
-{
- struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
- struct wm831x *wm831x = dcdc->wm831x;
- u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
- int i;
-
- for (i = ARRAY_SIZE(wm831x_dcdc_ilim) - 1; i >= 0; i--) {
- if ((min_uA <= wm831x_dcdc_ilim[i]) &&
- (wm831x_dcdc_ilim[i] <= max_uA))
- return wm831x_set_bits(wm831x, reg,
- WM831X_DC1_HC_THR_MASK,
- i << WM831X_DC1_HC_THR_SHIFT);
- }
-
- return -EINVAL;
-}
-
-static int wm831x_buckv_get_current_limit(struct regulator_dev *rdev)
-{
- struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
- struct wm831x *wm831x = dcdc->wm831x;
- u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
- int val;
-
- val = wm831x_reg_read(wm831x, reg);
- if (val < 0)
- return val;
-
- val = (val & WM831X_DC1_HC_THR_MASK) >> WM831X_DC1_HC_THR_SHIFT;
- return wm831x_dcdc_ilim[val];
-}
-
static const struct regulator_ops wm831x_buckv_ops = {
.set_voltage_sel = wm831x_buckv_set_voltage_sel,
.get_voltage_sel = wm831x_buckv_get_voltage_sel,
- .list_voltage = wm831x_buckv_list_voltage,
- .map_voltage = wm831x_buckv_map_voltage,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
.set_suspend_voltage = wm831x_buckv_set_suspend_voltage,
- .set_current_limit = wm831x_buckv_set_current_limit,
- .get_current_limit = wm831x_buckv_get_current_limit,
+ .set_current_limit = regulator_set_current_limit_regmap,
+ .get_current_limit = regulator_get_current_limit_regmap,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
@@ -395,7 +333,7 @@
int ret;
u16 ctrl;
- if (!pdata || !pdata->dvs_gpio)
+ if (!pdata)
return;
/* gpiolib won't let us read the GPIO status so pick the higher
@@ -403,16 +341,13 @@
*/
dcdc->dvs_gpio_state = pdata->dvs_init_state;
- ret = devm_gpio_request_one(&pdev->dev, pdata->dvs_gpio,
- dcdc->dvs_gpio_state ? GPIOF_INIT_HIGH : 0,
- "DCDC DVS");
- if (ret < 0) {
- dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %d\n",
- dcdc->name, ret);
+ dcdc->dvs_gpiod = devm_gpiod_get(&pdev->dev, "dvs",
+ dcdc->dvs_gpio_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW);
+ if (IS_ERR(dcdc->dvs_gpiod)) {
+ dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %ld\n",
+ dcdc->name, PTR_ERR(dcdc->dvs_gpiod));
return;
}
-
- dcdc->dvs_gpio = pdata->dvs_gpio;
switch (pdata->dvs_control_src) {
case 1:
@@ -492,10 +427,16 @@
dcdc->desc.id = id;
dcdc->desc.type = REGULATOR_VOLTAGE;
dcdc->desc.n_voltages = WM831X_BUCKV_MAX_SELECTOR + 1;
+ dcdc->desc.linear_ranges = wm831x_buckv_ranges;
+ dcdc->desc.n_linear_ranges = ARRAY_SIZE(wm831x_buckv_ranges);
dcdc->desc.ops = &wm831x_buckv_ops;
dcdc->desc.owner = THIS_MODULE;
dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
dcdc->desc.enable_mask = 1 << id;
+ dcdc->desc.csel_reg = dcdc->base + WM831X_DCDC_CONTROL_2;
+ dcdc->desc.csel_mask = WM831X_DC1_HC_THR_MASK;
+ dcdc->desc.n_current_limits = ARRAY_SIZE(wm831x_dcdc_ilim);
+ dcdc->desc.curr_table = wm831x_dcdc_ilim;
ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_ON_CONFIG);
if (ret < 0) {
--
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