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df561f6688
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
777 lines
20 KiB
C
777 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Split TWL6030 logic from twl-regulator.c:
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* Copyright (C) 2008 David Brownell
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*
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* Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/of_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/mfd/twl.h>
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#include <linux/delay.h>
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struct twlreg_info {
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/* start of regulator's PM_RECEIVER control register bank */
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u8 base;
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/* twl resource ID, for resource control state machine */
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u8 id;
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u8 flags;
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/* used by regulator core */
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struct regulator_desc desc;
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/* chip specific features */
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unsigned long features;
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/* data passed from board for external get/set voltage */
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void *data;
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};
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/* LDO control registers ... offset is from the base of its register bank.
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* The first three registers of all power resource banks help hardware to
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* manage the various resource groups.
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*/
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/* Common offset in TWL4030/6030 */
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#define VREG_GRP 0
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/* TWL6030 register offsets */
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#define VREG_TRANS 1
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#define VREG_STATE 2
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#define VREG_VOLTAGE 3
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#define VREG_VOLTAGE_SMPS 4
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/* TWL6030 Misc register offsets */
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#define VREG_BC_ALL 1
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#define VREG_BC_REF 2
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#define VREG_BC_PROC 3
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#define VREG_BC_CLK_RST 4
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/* TWL6030 LDO register values for VREG_VOLTAGE */
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#define TWL6030_VREG_VOLTAGE_WR_S BIT(7)
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/* TWL6030 LDO register values for CFG_STATE */
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#define TWL6030_CFG_STATE_OFF 0x00
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#define TWL6030_CFG_STATE_ON 0x01
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#define TWL6030_CFG_STATE_OFF2 0x02
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#define TWL6030_CFG_STATE_SLEEP 0x03
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#define TWL6030_CFG_STATE_GRP_SHIFT 5
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#define TWL6030_CFG_STATE_APP_SHIFT 2
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#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
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#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
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TWL6030_CFG_STATE_APP_SHIFT)
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/* Flags for SMPS Voltage reading and LDO reading*/
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#define SMPS_OFFSET_EN BIT(0)
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#define SMPS_EXTENDED_EN BIT(1)
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#define TWL_6030_WARM_RESET BIT(3)
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/* twl6032 SMPS EPROM values */
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#define TWL6030_SMPS_OFFSET 0xB0
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#define TWL6030_SMPS_MULT 0xB3
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#define SMPS_MULTOFFSET_SMPS4 BIT(0)
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#define SMPS_MULTOFFSET_VIO BIT(1)
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#define SMPS_MULTOFFSET_SMPS3 BIT(6)
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static inline int
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twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
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{
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u8 value;
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int status;
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status = twl_i2c_read_u8(slave_subgp,
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&value, info->base + offset);
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return (status < 0) ? status : value;
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}
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static inline int
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twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
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u8 value)
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{
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return twl_i2c_write_u8(slave_subgp,
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value, info->base + offset);
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}
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/* generic power resource operations, which work on all regulators */
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static int twlreg_grp(struct regulator_dev *rdev)
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{
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return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
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VREG_GRP);
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}
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/*
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* Enable/disable regulators by joining/leaving the P1 (processor) group.
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* We assume nobody else is updating the DEV_GRP registers.
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*/
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/* definition for 6030 family */
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#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
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#define P2_GRP_6030 BIT(1) /* "peripherals" */
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#define P1_GRP_6030 BIT(0) /* CPU/Linux */
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static int twl6030reg_is_enabled(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int grp = 0, val;
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if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
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grp = twlreg_grp(rdev);
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if (grp < 0)
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return grp;
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grp &= P1_GRP_6030;
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} else {
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grp = 1;
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}
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val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
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val = TWL6030_CFG_STATE_APP(val);
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return grp && (val == TWL6030_CFG_STATE_ON);
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}
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#define PB_I2C_BUSY BIT(0)
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#define PB_I2C_BWEN BIT(1)
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static int twl6030reg_enable(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int grp = 0;
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int ret;
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if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
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grp = twlreg_grp(rdev);
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if (grp < 0)
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return grp;
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ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
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grp << TWL6030_CFG_STATE_GRP_SHIFT |
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TWL6030_CFG_STATE_ON);
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return ret;
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}
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static int twl6030reg_disable(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int grp = 0;
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int ret;
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if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
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grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
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/* For 6030, set the off state for all grps enabled */
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ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
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(grp) << TWL6030_CFG_STATE_GRP_SHIFT |
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TWL6030_CFG_STATE_OFF);
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return ret;
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}
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static int twl6030reg_get_status(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int val;
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val = twlreg_grp(rdev);
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if (val < 0)
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return val;
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val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
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switch (TWL6030_CFG_STATE_APP(val)) {
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case TWL6030_CFG_STATE_ON:
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return REGULATOR_STATUS_NORMAL;
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case TWL6030_CFG_STATE_SLEEP:
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return REGULATOR_STATUS_STANDBY;
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case TWL6030_CFG_STATE_OFF:
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case TWL6030_CFG_STATE_OFF2:
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default:
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break;
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}
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return REGULATOR_STATUS_OFF;
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}
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static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int grp = 0;
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int val;
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if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
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grp = twlreg_grp(rdev);
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if (grp < 0)
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return grp;
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/* Compose the state register settings */
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val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
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/* We can only set the mode through state machine commands... */
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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val |= TWL6030_CFG_STATE_ON;
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break;
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case REGULATOR_MODE_STANDBY:
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val |= TWL6030_CFG_STATE_SLEEP;
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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 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
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}
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static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
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int max_uV, unsigned *selector)
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{
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return -ENODEV;
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}
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static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
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{
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return -ENODEV;
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}
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static const struct regulator_ops twl6030coresmps_ops = {
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.set_voltage = twl6030coresmps_set_voltage,
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.get_voltage = twl6030coresmps_get_voltage,
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};
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static int
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twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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if (info->flags & TWL_6030_WARM_RESET)
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selector |= TWL6030_VREG_VOLTAGE_WR_S;
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return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
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selector);
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}
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static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
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if (info->flags & TWL_6030_WARM_RESET)
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vsel &= ~TWL6030_VREG_VOLTAGE_WR_S;
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return vsel;
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}
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static const struct regulator_ops twl6030ldo_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.set_voltage_sel = twl6030ldo_set_voltage_sel,
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.get_voltage_sel = twl6030ldo_get_voltage_sel,
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.enable = twl6030reg_enable,
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.disable = twl6030reg_disable,
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.is_enabled = twl6030reg_is_enabled,
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.set_mode = twl6030reg_set_mode,
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.get_status = twl6030reg_get_status,
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};
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static const struct regulator_ops twl6030fixed_ops = {
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.list_voltage = regulator_list_voltage_linear,
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.enable = twl6030reg_enable,
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.disable = twl6030reg_disable,
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.is_enabled = twl6030reg_is_enabled,
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.set_mode = twl6030reg_set_mode,
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.get_status = twl6030reg_get_status,
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};
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/*
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* SMPS status and control
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*/
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static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int voltage = 0;
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switch (info->flags) {
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case SMPS_OFFSET_EN:
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voltage = 100000;
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fallthrough;
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case 0:
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switch (index) {
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case 0:
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voltage = 0;
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break;
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case 58:
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voltage = 1350 * 1000;
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break;
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case 59:
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voltage = 1500 * 1000;
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break;
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case 60:
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voltage = 1800 * 1000;
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break;
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case 61:
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voltage = 1900 * 1000;
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break;
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case 62:
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voltage = 2100 * 1000;
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break;
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default:
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voltage += (600000 + (12500 * (index - 1)));
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}
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break;
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case SMPS_EXTENDED_EN:
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switch (index) {
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case 0:
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voltage = 0;
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break;
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case 58:
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voltage = 2084 * 1000;
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break;
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case 59:
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voltage = 2315 * 1000;
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break;
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case 60:
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voltage = 2778 * 1000;
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break;
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case 61:
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voltage = 2932 * 1000;
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break;
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case 62:
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voltage = 3241 * 1000;
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break;
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default:
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voltage = (1852000 + (38600 * (index - 1)));
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}
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break;
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case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
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switch (index) {
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case 0:
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voltage = 0;
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break;
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case 58:
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voltage = 4167 * 1000;
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break;
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case 59:
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voltage = 2315 * 1000;
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break;
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case 60:
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voltage = 2778 * 1000;
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break;
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case 61:
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voltage = 2932 * 1000;
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break;
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case 62:
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voltage = 3241 * 1000;
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break;
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default:
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voltage = (2161000 + (38600 * (index - 1)));
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}
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break;
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}
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return voltage;
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}
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static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
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int max_uV)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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int vsel = 0;
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switch (info->flags) {
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case 0:
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if (min_uV == 0)
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vsel = 0;
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else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
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vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
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vsel++;
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}
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/* Values 1..57 for vsel are linear and can be calculated
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* values 58..62 are non linear.
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*/
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else if ((min_uV > 1900000) && (min_uV <= 2100000))
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vsel = 62;
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else if ((min_uV > 1800000) && (min_uV <= 1900000))
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vsel = 61;
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else if ((min_uV > 1500000) && (min_uV <= 1800000))
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vsel = 60;
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else if ((min_uV > 1350000) && (min_uV <= 1500000))
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vsel = 59;
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else if ((min_uV > 1300000) && (min_uV <= 1350000))
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vsel = 58;
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else
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return -EINVAL;
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break;
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case SMPS_OFFSET_EN:
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if (min_uV == 0)
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vsel = 0;
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else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
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vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
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vsel++;
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}
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/* Values 1..57 for vsel are linear and can be calculated
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* values 58..62 are non linear.
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*/
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else if ((min_uV > 1900000) && (min_uV <= 2100000))
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vsel = 62;
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else if ((min_uV > 1800000) && (min_uV <= 1900000))
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vsel = 61;
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else if ((min_uV > 1500000) && (min_uV <= 1800000))
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vsel = 60;
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else if ((min_uV > 1350000) && (min_uV <= 1500000))
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vsel = 59;
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else
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return -EINVAL;
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break;
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case SMPS_EXTENDED_EN:
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if (min_uV == 0) {
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vsel = 0;
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} else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
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vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
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vsel++;
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}
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break;
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case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
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if (min_uV == 0) {
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vsel = 0;
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} else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
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vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
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vsel++;
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}
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break;
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}
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return vsel;
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}
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static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int selector)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
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selector);
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}
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static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct twlreg_info *info = rdev_get_drvdata(rdev);
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return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
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}
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static const struct regulator_ops twlsmps_ops = {
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.list_voltage = twl6030smps_list_voltage,
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.map_voltage = twl6030smps_map_voltage,
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.set_voltage_sel = twl6030smps_set_voltage_sel,
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.get_voltage_sel = twl6030smps_get_voltage_sel,
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.enable = twl6030reg_enable,
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.disable = twl6030reg_disable,
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.is_enabled = twl6030reg_is_enabled,
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.set_mode = twl6030reg_set_mode,
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.get_status = twl6030reg_get_status,
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};
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/*----------------------------------------------------------------------*/
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static const struct linear_range twl6030ldo_linear_range[] = {
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REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
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REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
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REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
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};
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#define TWL6030_ADJUSTABLE_SMPS(label) \
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static const struct twlreg_info TWL6030_INFO_##label = { \
|
|
.desc = { \
|
|
.name = #label, \
|
|
.id = TWL6030_REG_##label, \
|
|
.ops = &twl6030coresmps_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
}
|
|
|
|
#define TWL6030_ADJUSTABLE_LDO(label, offset) \
|
|
static const struct twlreg_info TWL6030_INFO_##label = { \
|
|
.base = offset, \
|
|
.desc = { \
|
|
.name = #label, \
|
|
.id = TWL6030_REG_##label, \
|
|
.n_voltages = 32, \
|
|
.linear_ranges = twl6030ldo_linear_range, \
|
|
.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
|
|
.ops = &twl6030ldo_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
}
|
|
|
|
#define TWL6032_ADJUSTABLE_LDO(label, offset) \
|
|
static const struct twlreg_info TWL6032_INFO_##label = { \
|
|
.base = offset, \
|
|
.desc = { \
|
|
.name = #label, \
|
|
.id = TWL6032_REG_##label, \
|
|
.n_voltages = 32, \
|
|
.linear_ranges = twl6030ldo_linear_range, \
|
|
.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
|
|
.ops = &twl6030ldo_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
}
|
|
|
|
#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
|
|
static const struct twlreg_info TWLFIXED_INFO_##label = { \
|
|
.base = offset, \
|
|
.id = 0, \
|
|
.desc = { \
|
|
.name = #label, \
|
|
.id = TWL6030##_REG_##label, \
|
|
.n_voltages = 1, \
|
|
.ops = &twl6030fixed_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = mVolts * 1000, \
|
|
.enable_time = turnon_delay, \
|
|
.of_map_mode = NULL, \
|
|
}, \
|
|
}
|
|
|
|
#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
|
|
static const struct twlreg_info TWLSMPS_INFO_##label = { \
|
|
.base = offset, \
|
|
.desc = { \
|
|
.name = #label, \
|
|
.id = TWL6032_REG_##label, \
|
|
.n_voltages = 63, \
|
|
.ops = &twlsmps_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
}
|
|
|
|
/* VUSBCP is managed *only* by the USB subchip */
|
|
/* 6030 REG with base as PMC Slave Misc : 0x0030 */
|
|
/* Turnon-delay and remap configuration values for 6030 are not
|
|
verified since the specification is not public */
|
|
TWL6030_ADJUSTABLE_SMPS(VDD1);
|
|
TWL6030_ADJUSTABLE_SMPS(VDD2);
|
|
TWL6030_ADJUSTABLE_SMPS(VDD3);
|
|
TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
|
|
TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
|
|
TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
|
|
TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
|
|
TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
|
|
TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
|
|
/* 6025 are renamed compared to 6030 versions */
|
|
TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
|
|
TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
|
|
TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
|
|
TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
|
|
TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
|
|
TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
|
|
TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
|
|
TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
|
|
TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
|
|
TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
|
|
TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
|
|
TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
|
|
TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
|
|
TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
|
|
TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
|
|
TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
|
|
TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
|
|
TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
|
|
|
|
static u8 twl_get_smps_offset(void)
|
|
{
|
|
u8 value;
|
|
|
|
twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
|
|
TWL6030_SMPS_OFFSET);
|
|
return value;
|
|
}
|
|
|
|
static u8 twl_get_smps_mult(void)
|
|
{
|
|
u8 value;
|
|
|
|
twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
|
|
TWL6030_SMPS_MULT);
|
|
return value;
|
|
}
|
|
|
|
#define TWL_OF_MATCH(comp, family, label) \
|
|
{ \
|
|
.compatible = comp, \
|
|
.data = &family##_INFO_##label, \
|
|
}
|
|
|
|
#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
|
|
#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
|
|
#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
|
|
#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
|
|
|
|
static const struct of_device_id twl_of_match[] = {
|
|
TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
|
|
TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
|
|
TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
|
|
TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
|
|
TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
|
|
TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
|
|
TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
|
|
TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
|
|
TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
|
|
TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
|
|
TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
|
|
TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
|
|
TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
|
|
TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, twl_of_match);
|
|
|
|
static int twlreg_probe(struct platform_device *pdev)
|
|
{
|
|
int id;
|
|
struct twlreg_info *info;
|
|
const struct twlreg_info *template;
|
|
struct regulator_init_data *initdata;
|
|
struct regulation_constraints *c;
|
|
struct regulator_dev *rdev;
|
|
struct regulator_config config = { };
|
|
struct device_node *np = pdev->dev.of_node;
|
|
|
|
template = of_device_get_match_data(&pdev->dev);
|
|
if (!template)
|
|
return -ENODEV;
|
|
|
|
id = template->desc.id;
|
|
initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc);
|
|
if (!initdata)
|
|
return -EINVAL;
|
|
|
|
info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
/* Constrain board-specific capabilities according to what
|
|
* this driver and the chip itself can actually do.
|
|
*/
|
|
c = &initdata->constraints;
|
|
c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
|
|
c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
|
|
| REGULATOR_CHANGE_MODE
|
|
| REGULATOR_CHANGE_STATUS;
|
|
|
|
switch (id) {
|
|
case TWL6032_REG_SMPS3:
|
|
if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
|
|
info->flags |= SMPS_EXTENDED_EN;
|
|
if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
|
|
info->flags |= SMPS_OFFSET_EN;
|
|
break;
|
|
case TWL6032_REG_SMPS4:
|
|
if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
|
|
info->flags |= SMPS_EXTENDED_EN;
|
|
if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
|
|
info->flags |= SMPS_OFFSET_EN;
|
|
break;
|
|
case TWL6032_REG_VIO:
|
|
if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
|
|
info->flags |= SMPS_EXTENDED_EN;
|
|
if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
|
|
info->flags |= SMPS_OFFSET_EN;
|
|
break;
|
|
}
|
|
|
|
if (of_get_property(np, "ti,retain-on-reset", NULL))
|
|
info->flags |= TWL_6030_WARM_RESET;
|
|
|
|
config.dev = &pdev->dev;
|
|
config.init_data = initdata;
|
|
config.driver_data = info;
|
|
config.of_node = np;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "can't register %s, %ld\n",
|
|
info->desc.name, PTR_ERR(rdev));
|
|
return PTR_ERR(rdev);
|
|
}
|
|
platform_set_drvdata(pdev, rdev);
|
|
|
|
/* NOTE: many regulators support short-circuit IRQs (presentable
|
|
* as REGULATOR_OVER_CURRENT notifications?) configured via:
|
|
* - SC_CONFIG
|
|
* - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
|
|
* - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
|
|
* - IT_CONFIG
|
|
*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
MODULE_ALIAS("platform:twl6030_reg");
|
|
|
|
static struct platform_driver twlreg_driver = {
|
|
.probe = twlreg_probe,
|
|
/* NOTE: short name, to work around driver model truncation of
|
|
* "twl_regulator.12" (and friends) to "twl_regulator.1".
|
|
*/
|
|
.driver = {
|
|
.name = "twl6030_reg",
|
|
.of_match_table = of_match_ptr(twl_of_match),
|
|
},
|
|
};
|
|
|
|
static int __init twlreg_init(void)
|
|
{
|
|
return platform_driver_register(&twlreg_driver);
|
|
}
|
|
subsys_initcall(twlreg_init);
|
|
|
|
static void __exit twlreg_exit(void)
|
|
{
|
|
platform_driver_unregister(&twlreg_driver);
|
|
}
|
|
module_exit(twlreg_exit)
|
|
|
|
MODULE_DESCRIPTION("TWL6030 regulator driver");
|
|
MODULE_LICENSE("GPL");
|