mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 09:08:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
926
drivers/regulator/wm831x-dcdc.c
Normal file
926
drivers/regulator/wm831x-dcdc.c
Normal file
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@ -0,0 +1,926 @@
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/*
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* wm831x-dcdc.c -- DC-DC buck convertor driver for the WM831x series
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*
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* Copyright 2009 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <linux/err.h>
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#include <linux/i2c.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/gpio.h>
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#include <linux/slab.h>
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#include <linux/mfd/wm831x/core.h>
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#include <linux/mfd/wm831x/regulator.h>
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#include <linux/mfd/wm831x/pdata.h>
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#define WM831X_BUCKV_MAX_SELECTOR 0x68
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#define WM831X_BUCKP_MAX_SELECTOR 0x66
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#define WM831X_DCDC_MODE_FAST 0
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#define WM831X_DCDC_MODE_NORMAL 1
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#define WM831X_DCDC_MODE_IDLE 2
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#define WM831X_DCDC_MODE_STANDBY 3
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#define WM831X_DCDC_MAX_NAME 9
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/* Register offsets in control block */
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#define WM831X_DCDC_CONTROL_1 0
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#define WM831X_DCDC_CONTROL_2 1
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#define WM831X_DCDC_ON_CONFIG 2
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#define WM831X_DCDC_SLEEP_CONTROL 3
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#define WM831X_DCDC_DVS_CONTROL 4
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/*
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* Shared
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*/
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struct wm831x_dcdc {
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char name[WM831X_DCDC_MAX_NAME];
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char supply_name[WM831X_DCDC_MAX_NAME];
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struct regulator_desc desc;
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int base;
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struct wm831x *wm831x;
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struct regulator_dev *regulator;
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int dvs_gpio;
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int dvs_gpio_state;
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int on_vsel;
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int dvs_vsel;
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};
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static unsigned int wm831x_dcdc_get_mode(struct regulator_dev *rdev)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
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int val;
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val = wm831x_reg_read(wm831x, reg);
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if (val < 0)
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return val;
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val = (val & WM831X_DC1_ON_MODE_MASK) >> WM831X_DC1_ON_MODE_SHIFT;
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switch (val) {
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case WM831X_DCDC_MODE_FAST:
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return REGULATOR_MODE_FAST;
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case WM831X_DCDC_MODE_NORMAL:
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return REGULATOR_MODE_NORMAL;
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case WM831X_DCDC_MODE_STANDBY:
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return REGULATOR_MODE_STANDBY;
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case WM831X_DCDC_MODE_IDLE:
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return REGULATOR_MODE_IDLE;
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default:
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BUG();
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return -EINVAL;
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}
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}
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static int wm831x_dcdc_set_mode_int(struct wm831x *wm831x, int reg,
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unsigned int mode)
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{
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int val;
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switch (mode) {
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case REGULATOR_MODE_FAST:
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val = WM831X_DCDC_MODE_FAST;
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break;
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case REGULATOR_MODE_NORMAL:
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val = WM831X_DCDC_MODE_NORMAL;
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break;
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case REGULATOR_MODE_STANDBY:
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val = WM831X_DCDC_MODE_STANDBY;
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break;
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case REGULATOR_MODE_IDLE:
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val = WM831X_DCDC_MODE_IDLE;
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break;
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default:
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return -EINVAL;
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}
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return wm831x_set_bits(wm831x, reg, WM831X_DC1_ON_MODE_MASK,
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val << WM831X_DC1_ON_MODE_SHIFT);
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}
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static int wm831x_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
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return wm831x_dcdc_set_mode_int(wm831x, reg, mode);
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}
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static int wm831x_dcdc_set_suspend_mode(struct regulator_dev *rdev,
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unsigned int mode)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
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return wm831x_dcdc_set_mode_int(wm831x, reg, mode);
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}
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static int wm831x_dcdc_get_status(struct regulator_dev *rdev)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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int ret;
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/* First, check for errors */
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ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS);
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if (ret < 0)
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return ret;
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if (ret & (1 << rdev_get_id(rdev))) {
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dev_dbg(wm831x->dev, "DCDC%d under voltage\n",
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rdev_get_id(rdev) + 1);
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return REGULATOR_STATUS_ERROR;
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}
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/* DCDC1 and DCDC2 can additionally detect high voltage/current */
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if (rdev_get_id(rdev) < 2) {
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if (ret & (WM831X_DC1_OV_STS << rdev_get_id(rdev))) {
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dev_dbg(wm831x->dev, "DCDC%d over voltage\n",
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rdev_get_id(rdev) + 1);
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return REGULATOR_STATUS_ERROR;
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}
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if (ret & (WM831X_DC1_HC_STS << rdev_get_id(rdev))) {
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dev_dbg(wm831x->dev, "DCDC%d over current\n",
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rdev_get_id(rdev) + 1);
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return REGULATOR_STATUS_ERROR;
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}
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}
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/* Is the regulator on? */
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ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS);
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if (ret < 0)
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return ret;
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if (!(ret & (1 << rdev_get_id(rdev))))
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return REGULATOR_STATUS_OFF;
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/* TODO: When we handle hardware control modes so we can report the
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* current mode. */
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return REGULATOR_STATUS_ON;
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}
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static irqreturn_t wm831x_dcdc_uv_irq(int irq, void *data)
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{
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struct wm831x_dcdc *dcdc = data;
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regulator_notifier_call_chain(dcdc->regulator,
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REGULATOR_EVENT_UNDER_VOLTAGE,
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NULL);
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return IRQ_HANDLED;
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}
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static irqreturn_t wm831x_dcdc_oc_irq(int irq, void *data)
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{
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struct wm831x_dcdc *dcdc = data;
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regulator_notifier_call_chain(dcdc->regulator,
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REGULATOR_EVENT_OVER_CURRENT,
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NULL);
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return IRQ_HANDLED;
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}
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/*
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* BUCKV specifics
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*/
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static int wm831x_buckv_list_voltage(struct regulator_dev *rdev,
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unsigned selector)
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{
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if (selector <= 0x8)
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return 600000;
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if (selector <= WM831X_BUCKV_MAX_SELECTOR)
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return 600000 + ((selector - 0x8) * 12500);
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return -EINVAL;
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}
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static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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u16 vsel;
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if (min_uV < 600000)
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vsel = 0;
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else if (min_uV <= 1800000)
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vsel = DIV_ROUND_UP(min_uV - 600000, 12500) + 8;
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else
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return -EINVAL;
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if (wm831x_buckv_list_voltage(rdev, vsel) > max_uV)
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return -EINVAL;
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return vsel;
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}
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static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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if (state == dcdc->dvs_gpio_state)
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return 0;
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dcdc->dvs_gpio_state = state;
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gpio_set_value(dcdc->dvs_gpio, state);
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/* Should wait for DVS state change to be asserted if we have
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* a GPIO for it, for now assume the device is configured
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* for the fastest possible transition.
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*/
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return 0;
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}
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static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev,
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unsigned vsel)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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int on_reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
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int dvs_reg = dcdc->base + WM831X_DCDC_DVS_CONTROL;
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int ret;
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/* If this value is already set then do a GPIO update if we can */
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if (dcdc->dvs_gpio && dcdc->on_vsel == vsel)
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return wm831x_buckv_set_dvs(rdev, 0);
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if (dcdc->dvs_gpio && dcdc->dvs_vsel == vsel)
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return wm831x_buckv_set_dvs(rdev, 1);
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/* Always set the ON status to the minimum voltage */
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ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK, vsel);
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if (ret < 0)
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return ret;
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dcdc->on_vsel = vsel;
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if (!dcdc->dvs_gpio)
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return ret;
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/* Kick the voltage transition now */
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ret = wm831x_buckv_set_dvs(rdev, 0);
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if (ret < 0)
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return ret;
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/*
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* If this VSEL is higher than the last one we've seen then
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* remember it as the DVS VSEL. This is optimised for CPUfreq
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* usage where we want to get to the highest voltage very
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* quickly.
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*/
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if (vsel > dcdc->dvs_vsel) {
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ret = wm831x_set_bits(wm831x, dvs_reg,
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WM831X_DC1_DVS_VSEL_MASK,
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vsel);
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if (ret == 0)
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dcdc->dvs_vsel = vsel;
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else
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dev_warn(wm831x->dev,
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"Failed to set DCDC DVS VSEL: %d\n", ret);
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}
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return 0;
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}
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static int wm831x_buckv_set_suspend_voltage(struct regulator_dev *rdev,
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int uV)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
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int vsel;
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vsel = wm831x_buckv_map_voltage(rdev, uV, uV);
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if (vsel < 0)
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return vsel;
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return wm831x_set_bits(wm831x, reg, WM831X_DC1_SLP_VSEL_MASK, vsel);
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}
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static int wm831x_buckv_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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if (dcdc->dvs_gpio && dcdc->dvs_gpio_state)
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return dcdc->dvs_vsel;
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else
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return dcdc->on_vsel;
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}
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/* Current limit options */
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static u16 wm831x_dcdc_ilim[] = {
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125, 250, 375, 500, 625, 750, 875, 1000
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};
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static int wm831x_buckv_set_current_limit(struct regulator_dev *rdev,
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int min_uA, int max_uA)
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
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int i;
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for (i = ARRAY_SIZE(wm831x_dcdc_ilim) - 1; i >= 0; i--) {
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if ((min_uA <= wm831x_dcdc_ilim[i]) &&
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(wm831x_dcdc_ilim[i] <= max_uA))
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return wm831x_set_bits(wm831x, reg,
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WM831X_DC1_HC_THR_MASK,
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i << WM831X_DC1_HC_THR_SHIFT);
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}
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return -EINVAL;
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}
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|
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static int wm831x_buckv_get_current_limit(struct regulator_dev *rdev)
|
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{
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struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
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struct wm831x *wm831x = dcdc->wm831x;
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u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
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int val;
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val = wm831x_reg_read(wm831x, reg);
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if (val < 0)
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return val;
|
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|
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val = (val & WM831X_DC1_HC_THR_MASK) >> WM831X_DC1_HC_THR_SHIFT;
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return wm831x_dcdc_ilim[val];
|
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}
|
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|
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static struct regulator_ops wm831x_buckv_ops = {
|
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.set_voltage_sel = wm831x_buckv_set_voltage_sel,
|
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.get_voltage_sel = wm831x_buckv_get_voltage_sel,
|
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.list_voltage = wm831x_buckv_list_voltage,
|
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.map_voltage = wm831x_buckv_map_voltage,
|
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.set_suspend_voltage = wm831x_buckv_set_suspend_voltage,
|
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.set_current_limit = wm831x_buckv_set_current_limit,
|
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.get_current_limit = wm831x_buckv_get_current_limit,
|
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|
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.is_enabled = regulator_is_enabled_regmap,
|
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.enable = regulator_enable_regmap,
|
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.disable = regulator_disable_regmap,
|
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.get_status = wm831x_dcdc_get_status,
|
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.get_mode = wm831x_dcdc_get_mode,
|
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.set_mode = wm831x_dcdc_set_mode,
|
||||
.set_suspend_mode = wm831x_dcdc_set_suspend_mode,
|
||||
};
|
||||
|
||||
/*
|
||||
* Set up DVS control. We just log errors since we can still run
|
||||
* (with reduced performance) if we fail.
|
||||
*/
|
||||
static void wm831x_buckv_dvs_init(struct platform_device *pdev,
|
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struct wm831x_dcdc *dcdc,
|
||||
struct wm831x_buckv_pdata *pdata)
|
||||
{
|
||||
struct wm831x *wm831x = dcdc->wm831x;
|
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int ret;
|
||||
u16 ctrl;
|
||||
|
||||
if (!pdata || !pdata->dvs_gpio)
|
||||
return;
|
||||
|
||||
/* gpiolib won't let us read the GPIO status so pick the higher
|
||||
* of the two existing voltages so we take it as platform data.
|
||||
*/
|
||||
dcdc->dvs_gpio_state = pdata->dvs_init_state;
|
||||
|
||||
ret = devm_gpio_request_one(&pdev->dev, pdata->dvs_gpio,
|
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dcdc->dvs_gpio_state ? GPIOF_INIT_HIGH : 0,
|
||||
"DCDC DVS");
|
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if (ret < 0) {
|
||||
dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %d\n",
|
||||
dcdc->name, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
dcdc->dvs_gpio = pdata->dvs_gpio;
|
||||
|
||||
switch (pdata->dvs_control_src) {
|
||||
case 1:
|
||||
ctrl = 2 << WM831X_DC1_DVS_SRC_SHIFT;
|
||||
break;
|
||||
case 2:
|
||||
ctrl = 3 << WM831X_DC1_DVS_SRC_SHIFT;
|
||||
break;
|
||||
default:
|
||||
dev_err(wm831x->dev, "Invalid DVS control source %d for %s\n",
|
||||
pdata->dvs_control_src, dcdc->name);
|
||||
return;
|
||||
}
|
||||
|
||||
/* If DVS_VSEL is set to the minimum value then raise it to ON_VSEL
|
||||
* to make bootstrapping a bit smoother.
|
||||
*/
|
||||
if (!dcdc->dvs_vsel) {
|
||||
ret = wm831x_set_bits(wm831x,
|
||||
dcdc->base + WM831X_DCDC_DVS_CONTROL,
|
||||
WM831X_DC1_DVS_VSEL_MASK, dcdc->on_vsel);
|
||||
if (ret == 0)
|
||||
dcdc->dvs_vsel = dcdc->on_vsel;
|
||||
else
|
||||
dev_warn(wm831x->dev, "Failed to set DVS_VSEL: %d\n",
|
||||
ret);
|
||||
}
|
||||
|
||||
ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL,
|
||||
WM831X_DC1_DVS_SRC_MASK, ctrl);
|
||||
if (ret < 0) {
|
||||
dev_err(wm831x->dev, "Failed to set %s DVS source: %d\n",
|
||||
dcdc->name, ret);
|
||||
}
|
||||
}
|
||||
|
||||
static int wm831x_buckv_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
|
||||
struct regulator_config config = { };
|
||||
int id;
|
||||
struct wm831x_dcdc *dcdc;
|
||||
struct resource *res;
|
||||
int ret, irq;
|
||||
|
||||
if (pdata && pdata->wm831x_num)
|
||||
id = (pdata->wm831x_num * 10) + 1;
|
||||
else
|
||||
id = 0;
|
||||
id = pdev->id - id;
|
||||
|
||||
dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
|
||||
|
||||
dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc),
|
||||
GFP_KERNEL);
|
||||
if (!dcdc)
|
||||
return -ENOMEM;
|
||||
|
||||
dcdc->wm831x = wm831x;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_REG, 0);
|
||||
if (res == NULL) {
|
||||
dev_err(&pdev->dev, "No REG resource\n");
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
dcdc->base = res->start;
|
||||
|
||||
snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
|
||||
dcdc->desc.name = dcdc->name;
|
||||
|
||||
snprintf(dcdc->supply_name, sizeof(dcdc->supply_name),
|
||||
"DC%dVDD", id + 1);
|
||||
dcdc->desc.supply_name = dcdc->supply_name;
|
||||
|
||||
dcdc->desc.id = id;
|
||||
dcdc->desc.type = REGULATOR_VOLTAGE;
|
||||
dcdc->desc.n_voltages = WM831X_BUCKV_MAX_SELECTOR + 1;
|
||||
dcdc->desc.ops = &wm831x_buckv_ops;
|
||||
dcdc->desc.owner = THIS_MODULE;
|
||||
dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
|
||||
dcdc->desc.enable_mask = 1 << id;
|
||||
|
||||
ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_ON_CONFIG);
|
||||
if (ret < 0) {
|
||||
dev_err(wm831x->dev, "Failed to read ON VSEL: %d\n", ret);
|
||||
goto err;
|
||||
}
|
||||
dcdc->on_vsel = ret & WM831X_DC1_ON_VSEL_MASK;
|
||||
|
||||
ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL);
|
||||
if (ret < 0) {
|
||||
dev_err(wm831x->dev, "Failed to read DVS VSEL: %d\n", ret);
|
||||
goto err;
|
||||
}
|
||||
dcdc->dvs_vsel = ret & WM831X_DC1_DVS_VSEL_MASK;
|
||||
|
||||
if (pdata && pdata->dcdc[id])
|
||||
wm831x_buckv_dvs_init(pdev, dcdc,
|
||||
pdata->dcdc[id]->driver_data);
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
if (pdata)
|
||||
config.init_data = pdata->dcdc[id];
|
||||
config.driver_data = dcdc;
|
||||
config.regmap = wm831x->regmap;
|
||||
|
||||
dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc,
|
||||
&config);
|
||||
if (IS_ERR(dcdc->regulator)) {
|
||||
ret = PTR_ERR(dcdc->regulator);
|
||||
dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
|
||||
id + 1, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
|
||||
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
||||
wm831x_dcdc_uv_irq,
|
||||
IRQF_TRIGGER_RISING, dcdc->name, dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
|
||||
irq, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC"));
|
||||
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
||||
wm831x_dcdc_oc_irq,
|
||||
IRQF_TRIGGER_RISING, dcdc->name, dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n",
|
||||
irq, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, dcdc);
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_buckv_driver = {
|
||||
.probe = wm831x_buckv_probe,
|
||||
.driver = {
|
||||
.name = "wm831x-buckv",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
/*
|
||||
* BUCKP specifics
|
||||
*/
|
||||
|
||||
static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev, int uV)
|
||||
{
|
||||
struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
|
||||
struct wm831x *wm831x = dcdc->wm831x;
|
||||
u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
|
||||
int sel;
|
||||
|
||||
sel = regulator_map_voltage_linear(rdev, uV, uV);
|
||||
if (sel < 0)
|
||||
return sel;
|
||||
|
||||
return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, sel);
|
||||
}
|
||||
|
||||
static struct regulator_ops wm831x_buckp_ops = {
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.map_voltage = regulator_map_voltage_linear,
|
||||
.set_suspend_voltage = wm831x_buckp_set_suspend_voltage,
|
||||
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.get_status = wm831x_dcdc_get_status,
|
||||
.get_mode = wm831x_dcdc_get_mode,
|
||||
.set_mode = wm831x_dcdc_set_mode,
|
||||
.set_suspend_mode = wm831x_dcdc_set_suspend_mode,
|
||||
};
|
||||
|
||||
static int wm831x_buckp_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
|
||||
struct regulator_config config = { };
|
||||
int id;
|
||||
struct wm831x_dcdc *dcdc;
|
||||
struct resource *res;
|
||||
int ret, irq;
|
||||
|
||||
if (pdata && pdata->wm831x_num)
|
||||
id = (pdata->wm831x_num * 10) + 1;
|
||||
else
|
||||
id = 0;
|
||||
id = pdev->id - id;
|
||||
|
||||
dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
|
||||
|
||||
dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc),
|
||||
GFP_KERNEL);
|
||||
if (!dcdc)
|
||||
return -ENOMEM;
|
||||
|
||||
dcdc->wm831x = wm831x;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_REG, 0);
|
||||
if (res == NULL) {
|
||||
dev_err(&pdev->dev, "No REG resource\n");
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
dcdc->base = res->start;
|
||||
|
||||
snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
|
||||
dcdc->desc.name = dcdc->name;
|
||||
|
||||
snprintf(dcdc->supply_name, sizeof(dcdc->supply_name),
|
||||
"DC%dVDD", id + 1);
|
||||
dcdc->desc.supply_name = dcdc->supply_name;
|
||||
|
||||
dcdc->desc.id = id;
|
||||
dcdc->desc.type = REGULATOR_VOLTAGE;
|
||||
dcdc->desc.n_voltages = WM831X_BUCKP_MAX_SELECTOR + 1;
|
||||
dcdc->desc.ops = &wm831x_buckp_ops;
|
||||
dcdc->desc.owner = THIS_MODULE;
|
||||
dcdc->desc.vsel_reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
|
||||
dcdc->desc.vsel_mask = WM831X_DC3_ON_VSEL_MASK;
|
||||
dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
|
||||
dcdc->desc.enable_mask = 1 << id;
|
||||
dcdc->desc.min_uV = 850000;
|
||||
dcdc->desc.uV_step = 25000;
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
if (pdata)
|
||||
config.init_data = pdata->dcdc[id];
|
||||
config.driver_data = dcdc;
|
||||
config.regmap = wm831x->regmap;
|
||||
|
||||
dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc,
|
||||
&config);
|
||||
if (IS_ERR(dcdc->regulator)) {
|
||||
ret = PTR_ERR(dcdc->regulator);
|
||||
dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
|
||||
id + 1, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
|
||||
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
||||
wm831x_dcdc_uv_irq,
|
||||
IRQF_TRIGGER_RISING, dcdc->name, dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
|
||||
irq, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, dcdc);
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_buckp_driver = {
|
||||
.probe = wm831x_buckp_probe,
|
||||
.driver = {
|
||||
.name = "wm831x-buckp",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
/*
|
||||
* DCDC boost convertors
|
||||
*/
|
||||
|
||||
static int wm831x_boostp_get_status(struct regulator_dev *rdev)
|
||||
{
|
||||
struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
|
||||
struct wm831x *wm831x = dcdc->wm831x;
|
||||
int ret;
|
||||
|
||||
/* First, check for errors */
|
||||
ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ret & (1 << rdev_get_id(rdev))) {
|
||||
dev_dbg(wm831x->dev, "DCDC%d under voltage\n",
|
||||
rdev_get_id(rdev) + 1);
|
||||
return REGULATOR_STATUS_ERROR;
|
||||
}
|
||||
|
||||
/* Is the regulator on? */
|
||||
ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
if (ret & (1 << rdev_get_id(rdev)))
|
||||
return REGULATOR_STATUS_ON;
|
||||
else
|
||||
return REGULATOR_STATUS_OFF;
|
||||
}
|
||||
|
||||
static struct regulator_ops wm831x_boostp_ops = {
|
||||
.get_status = wm831x_boostp_get_status,
|
||||
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
};
|
||||
|
||||
static int wm831x_boostp_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
|
||||
struct regulator_config config = { };
|
||||
int id = pdev->id % ARRAY_SIZE(pdata->dcdc);
|
||||
struct wm831x_dcdc *dcdc;
|
||||
struct resource *res;
|
||||
int ret, irq;
|
||||
|
||||
dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
|
||||
|
||||
if (pdata == NULL || pdata->dcdc[id] == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL);
|
||||
if (!dcdc)
|
||||
return -ENOMEM;
|
||||
|
||||
dcdc->wm831x = wm831x;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_REG, 0);
|
||||
if (res == NULL) {
|
||||
dev_err(&pdev->dev, "No REG resource\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
dcdc->base = res->start;
|
||||
|
||||
snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
|
||||
dcdc->desc.name = dcdc->name;
|
||||
dcdc->desc.id = id;
|
||||
dcdc->desc.type = REGULATOR_VOLTAGE;
|
||||
dcdc->desc.ops = &wm831x_boostp_ops;
|
||||
dcdc->desc.owner = THIS_MODULE;
|
||||
dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
|
||||
dcdc->desc.enable_mask = 1 << id;
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
if (pdata)
|
||||
config.init_data = pdata->dcdc[id];
|
||||
config.driver_data = dcdc;
|
||||
config.regmap = wm831x->regmap;
|
||||
|
||||
dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc,
|
||||
&config);
|
||||
if (IS_ERR(dcdc->regulator)) {
|
||||
ret = PTR_ERR(dcdc->regulator);
|
||||
dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
|
||||
id + 1, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
|
||||
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
||||
wm831x_dcdc_uv_irq,
|
||||
IRQF_TRIGGER_RISING, dcdc->name,
|
||||
dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
|
||||
irq, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, dcdc);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_boostp_driver = {
|
||||
.probe = wm831x_boostp_probe,
|
||||
.driver = {
|
||||
.name = "wm831x-boostp",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
/*
|
||||
* External Power Enable
|
||||
*
|
||||
* These aren't actually DCDCs but look like them in hardware so share
|
||||
* code.
|
||||
*/
|
||||
|
||||
#define WM831X_EPE_BASE 6
|
||||
|
||||
static struct regulator_ops wm831x_epe_ops = {
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.get_status = wm831x_dcdc_get_status,
|
||||
};
|
||||
|
||||
static int wm831x_epe_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
|
||||
struct regulator_config config = { };
|
||||
int id = pdev->id % ARRAY_SIZE(pdata->epe);
|
||||
struct wm831x_dcdc *dcdc;
|
||||
int ret;
|
||||
|
||||
dev_dbg(&pdev->dev, "Probing EPE%d\n", id + 1);
|
||||
|
||||
dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL);
|
||||
if (!dcdc)
|
||||
return -ENOMEM;
|
||||
|
||||
dcdc->wm831x = wm831x;
|
||||
|
||||
/* For current parts this is correct; probably need to revisit
|
||||
* in future.
|
||||
*/
|
||||
snprintf(dcdc->name, sizeof(dcdc->name), "EPE%d", id + 1);
|
||||
dcdc->desc.name = dcdc->name;
|
||||
dcdc->desc.id = id + WM831X_EPE_BASE; /* Offset in DCDC registers */
|
||||
dcdc->desc.ops = &wm831x_epe_ops;
|
||||
dcdc->desc.type = REGULATOR_VOLTAGE;
|
||||
dcdc->desc.owner = THIS_MODULE;
|
||||
dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
|
||||
dcdc->desc.enable_mask = 1 << dcdc->desc.id;
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
if (pdata)
|
||||
config.init_data = pdata->epe[id];
|
||||
config.driver_data = dcdc;
|
||||
config.regmap = wm831x->regmap;
|
||||
|
||||
dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc,
|
||||
&config);
|
||||
if (IS_ERR(dcdc->regulator)) {
|
||||
ret = PTR_ERR(dcdc->regulator);
|
||||
dev_err(wm831x->dev, "Failed to register EPE%d: %d\n",
|
||||
id + 1, ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, dcdc);
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_epe_driver = {
|
||||
.probe = wm831x_epe_probe,
|
||||
.driver = {
|
||||
.name = "wm831x-epe",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init wm831x_dcdc_init(void)
|
||||
{
|
||||
int ret;
|
||||
ret = platform_driver_register(&wm831x_buckv_driver);
|
||||
if (ret != 0)
|
||||
pr_err("Failed to register WM831x BUCKV driver: %d\n", ret);
|
||||
|
||||
ret = platform_driver_register(&wm831x_buckp_driver);
|
||||
if (ret != 0)
|
||||
pr_err("Failed to register WM831x BUCKP driver: %d\n", ret);
|
||||
|
||||
ret = platform_driver_register(&wm831x_boostp_driver);
|
||||
if (ret != 0)
|
||||
pr_err("Failed to register WM831x BOOST driver: %d\n", ret);
|
||||
|
||||
ret = platform_driver_register(&wm831x_epe_driver);
|
||||
if (ret != 0)
|
||||
pr_err("Failed to register WM831x EPE driver: %d\n", ret);
|
||||
|
||||
return 0;
|
||||
}
|
||||
subsys_initcall(wm831x_dcdc_init);
|
||||
|
||||
static void __exit wm831x_dcdc_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&wm831x_epe_driver);
|
||||
platform_driver_unregister(&wm831x_boostp_driver);
|
||||
platform_driver_unregister(&wm831x_buckp_driver);
|
||||
platform_driver_unregister(&wm831x_buckv_driver);
|
||||
}
|
||||
module_exit(wm831x_dcdc_exit);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Mark Brown");
|
||||
MODULE_DESCRIPTION("WM831x DC-DC convertor driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:wm831x-buckv");
|
||||
MODULE_ALIAS("platform:wm831x-buckp");
|
||||
MODULE_ALIAS("platform:wm831x-boostp");
|
||||
MODULE_ALIAS("platform:wm831x-epe");
|
||||
Loading…
Add table
Add a link
Reference in a new issue