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848 lines
21 KiB
848 lines
21 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* MFD driver for TWL6040 audio device |
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* |
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* Authors: Misael Lopez Cruz <[email protected]> |
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* Jorge Eduardo Candelaria <[email protected]> |
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* Peter Ujfalusi <[email protected]> |
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* |
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* Copyright: (C) 2011 Texas Instruments, Inc. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/kernel.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_irq.h> |
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#include <linux/of_gpio.h> |
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#include <linux/of_platform.h> |
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#include <linux/gpio.h> |
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#include <linux/delay.h> |
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#include <linux/i2c.h> |
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#include <linux/regmap.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/twl6040.h> |
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#include <linux/regulator/consumer.h> |
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|
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#define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
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#define TWL6040_NUM_SUPPLIES (2) |
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|
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static const struct reg_default twl6040_defaults[] = { |
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{ 0x01, 0x4B }, /* REG_ASICID (ro) */ |
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{ 0x02, 0x00 }, /* REG_ASICREV (ro) */ |
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{ 0x03, 0x00 }, /* REG_INTID */ |
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{ 0x04, 0x00 }, /* REG_INTMR */ |
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{ 0x05, 0x00 }, /* REG_NCPCTRL */ |
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{ 0x06, 0x00 }, /* REG_LDOCTL */ |
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{ 0x07, 0x60 }, /* REG_HPPLLCTL */ |
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{ 0x08, 0x00 }, /* REG_LPPLLCTL */ |
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{ 0x09, 0x4A }, /* REG_LPPLLDIV */ |
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{ 0x0A, 0x00 }, /* REG_AMICBCTL */ |
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{ 0x0B, 0x00 }, /* REG_DMICBCTL */ |
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{ 0x0C, 0x00 }, /* REG_MICLCTL */ |
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{ 0x0D, 0x00 }, /* REG_MICRCTL */ |
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{ 0x0E, 0x00 }, /* REG_MICGAIN */ |
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{ 0x0F, 0x1B }, /* REG_LINEGAIN */ |
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{ 0x10, 0x00 }, /* REG_HSLCTL */ |
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{ 0x11, 0x00 }, /* REG_HSRCTL */ |
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{ 0x12, 0x00 }, /* REG_HSGAIN */ |
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{ 0x13, 0x00 }, /* REG_EARCTL */ |
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{ 0x14, 0x00 }, /* REG_HFLCTL */ |
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{ 0x15, 0x00 }, /* REG_HFLGAIN */ |
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{ 0x16, 0x00 }, /* REG_HFRCTL */ |
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{ 0x17, 0x00 }, /* REG_HFRGAIN */ |
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{ 0x18, 0x00 }, /* REG_VIBCTLL */ |
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{ 0x19, 0x00 }, /* REG_VIBDATL */ |
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{ 0x1A, 0x00 }, /* REG_VIBCTLR */ |
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{ 0x1B, 0x00 }, /* REG_VIBDATR */ |
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{ 0x1C, 0x00 }, /* REG_HKCTL1 */ |
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{ 0x1D, 0x00 }, /* REG_HKCTL2 */ |
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{ 0x1E, 0x00 }, /* REG_GPOCTL */ |
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{ 0x1F, 0x00 }, /* REG_ALB */ |
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{ 0x20, 0x00 }, /* REG_DLB */ |
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/* 0x28, REG_TRIM1 */ |
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/* 0x29, REG_TRIM2 */ |
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/* 0x2A, REG_TRIM3 */ |
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/* 0x2B, REG_HSOTRIM */ |
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/* 0x2C, REG_HFOTRIM */ |
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{ 0x2D, 0x08 }, /* REG_ACCCTL */ |
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{ 0x2E, 0x00 }, /* REG_STATUS (ro) */ |
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}; |
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|
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static struct reg_sequence twl6040_patch[] = { |
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/* |
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* Select I2C bus access to dual access registers |
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* Interrupt register is cleared on read |
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* Select fast mode for i2c (400KHz) |
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*/ |
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{ TWL6040_REG_ACCCTL, |
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TWL6040_I2CSEL | TWL6040_INTCLRMODE | TWL6040_I2CMODE(1) }, |
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}; |
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|
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static bool twl6040_has_vibra(struct device_node *parent) |
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{ |
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struct device_node *node; |
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|
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node = of_get_child_by_name(parent, "vibra"); |
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if (node) { |
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of_node_put(node); |
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return true; |
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} |
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|
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return false; |
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} |
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int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
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{ |
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int ret; |
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unsigned int val; |
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|
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ret = regmap_read(twl6040->regmap, reg, &val); |
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if (ret < 0) |
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return ret; |
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|
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return val; |
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} |
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EXPORT_SYMBOL(twl6040_reg_read); |
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|
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int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) |
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{ |
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int ret; |
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|
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ret = regmap_write(twl6040->regmap, reg, val); |
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|
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return ret; |
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} |
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EXPORT_SYMBOL(twl6040_reg_write); |
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|
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int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) |
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{ |
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return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
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} |
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EXPORT_SYMBOL(twl6040_set_bits); |
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|
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int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) |
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{ |
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return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
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} |
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EXPORT_SYMBOL(twl6040_clear_bits); |
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|
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/* twl6040 codec manual power-up sequence */ |
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static int twl6040_power_up_manual(struct twl6040 *twl6040) |
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{ |
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u8 ldoctl, ncpctl, lppllctl; |
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int ret; |
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|
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/* enable high-side LDO, reference system and internal oscillator */ |
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ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; |
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ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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if (ret) |
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return ret; |
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usleep_range(10000, 10500); |
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|
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/* enable negative charge pump */ |
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ncpctl = TWL6040_NCPENA; |
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ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
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if (ret) |
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goto ncp_err; |
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usleep_range(1000, 1500); |
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|
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/* enable low-side LDO */ |
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ldoctl |= TWL6040_LSLDOENA; |
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ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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if (ret) |
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goto lsldo_err; |
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usleep_range(1000, 1500); |
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|
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/* enable low-power PLL */ |
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lppllctl = TWL6040_LPLLENA; |
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ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
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if (ret) |
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goto lppll_err; |
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usleep_range(5000, 5500); |
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|
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/* disable internal oscillator */ |
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ldoctl &= ~TWL6040_OSCENA; |
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ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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if (ret) |
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goto osc_err; |
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|
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return 0; |
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osc_err: |
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lppllctl &= ~TWL6040_LPLLENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
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lppll_err: |
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ldoctl &= ~TWL6040_LSLDOENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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lsldo_err: |
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ncpctl &= ~TWL6040_NCPENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
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ncp_err: |
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ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); |
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twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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dev_err(twl6040->dev, "manual power-up failed\n"); |
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return ret; |
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} |
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|
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/* twl6040 manual power-down sequence */ |
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static void twl6040_power_down_manual(struct twl6040 *twl6040) |
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{ |
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u8 ncpctl, ldoctl, lppllctl; |
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|
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ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); |
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ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); |
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lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); |
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|
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/* enable internal oscillator */ |
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ldoctl |= TWL6040_OSCENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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usleep_range(1000, 1500); |
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|
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/* disable low-power PLL */ |
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lppllctl &= ~TWL6040_LPLLENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
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|
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/* disable low-side LDO */ |
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ldoctl &= ~TWL6040_LSLDOENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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|
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/* disable negative charge pump */ |
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ncpctl &= ~TWL6040_NCPENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
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|
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/* disable high-side LDO, reference system and internal oscillator */ |
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ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); |
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twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
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} |
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static irqreturn_t twl6040_readyint_handler(int irq, void *data) |
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{ |
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struct twl6040 *twl6040 = data; |
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complete(&twl6040->ready); |
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return IRQ_HANDLED; |
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} |
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static irqreturn_t twl6040_thint_handler(int irq, void *data) |
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{ |
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struct twl6040 *twl6040 = data; |
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u8 status; |
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status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); |
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if (status & TWL6040_TSHUTDET) { |
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dev_warn(twl6040->dev, "Thermal shutdown, powering-off"); |
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twl6040_power(twl6040, 0); |
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} else { |
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dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on"); |
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twl6040_power(twl6040, 1); |
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} |
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return IRQ_HANDLED; |
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} |
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static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
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{ |
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int time_left; |
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gpio_set_value(twl6040->audpwron, 1); |
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time_left = wait_for_completion_timeout(&twl6040->ready, |
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msecs_to_jiffies(144)); |
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if (!time_left) { |
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u8 intid; |
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dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); |
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intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
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if (!(intid & TWL6040_READYINT)) { |
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dev_err(twl6040->dev, "automatic power-up failed\n"); |
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gpio_set_value(twl6040->audpwron, 0); |
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return -ETIMEDOUT; |
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} |
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} |
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return 0; |
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} |
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int twl6040_power(struct twl6040 *twl6040, int on) |
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{ |
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int ret = 0; |
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mutex_lock(&twl6040->mutex); |
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if (on) { |
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/* already powered-up */ |
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if (twl6040->power_count++) |
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goto out; |
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ret = clk_prepare_enable(twl6040->clk32k); |
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if (ret) { |
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twl6040->power_count = 0; |
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goto out; |
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} |
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|
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/* Allow writes to the chip */ |
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regcache_cache_only(twl6040->regmap, false); |
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if (gpio_is_valid(twl6040->audpwron)) { |
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/* use automatic power-up sequence */ |
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ret = twl6040_power_up_automatic(twl6040); |
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if (ret) { |
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clk_disable_unprepare(twl6040->clk32k); |
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twl6040->power_count = 0; |
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goto out; |
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} |
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} else { |
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/* use manual power-up sequence */ |
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ret = twl6040_power_up_manual(twl6040); |
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if (ret) { |
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clk_disable_unprepare(twl6040->clk32k); |
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twl6040->power_count = 0; |
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goto out; |
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} |
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} |
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|
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/* |
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* Register access can produce errors after power-up unless we |
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* wait at least 8ms based on measurements on duovero. |
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*/ |
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usleep_range(10000, 12000); |
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|
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/* Sync with the HW */ |
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ret = regcache_sync(twl6040->regmap); |
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if (ret) { |
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dev_err(twl6040->dev, "Failed to sync with the HW: %i\n", |
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ret); |
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goto out; |
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} |
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|
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/* Default PLL configuration after power up */ |
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twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; |
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twl6040->sysclk_rate = 19200000; |
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} else { |
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/* already powered-down */ |
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if (!twl6040->power_count) { |
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dev_err(twl6040->dev, |
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"device is already powered-off\n"); |
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ret = -EPERM; |
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goto out; |
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} |
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|
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if (--twl6040->power_count) |
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goto out; |
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|
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if (gpio_is_valid(twl6040->audpwron)) { |
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/* use AUDPWRON line */ |
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gpio_set_value(twl6040->audpwron, 0); |
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|
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/* power-down sequence latency */ |
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usleep_range(500, 700); |
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} else { |
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/* use manual power-down sequence */ |
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twl6040_power_down_manual(twl6040); |
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} |
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|
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/* Set regmap to cache only and mark it as dirty */ |
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regcache_cache_only(twl6040->regmap, true); |
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regcache_mark_dirty(twl6040->regmap); |
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|
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twl6040->sysclk_rate = 0; |
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|
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if (twl6040->pll == TWL6040_SYSCLK_SEL_HPPLL) { |
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clk_disable_unprepare(twl6040->mclk); |
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twl6040->mclk_rate = 0; |
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} |
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|
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clk_disable_unprepare(twl6040->clk32k); |
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} |
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out: |
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mutex_unlock(&twl6040->mutex); |
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return ret; |
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} |
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EXPORT_SYMBOL(twl6040_power); |
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int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
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unsigned int freq_in, unsigned int freq_out) |
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{ |
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u8 hppllctl, lppllctl; |
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int ret = 0; |
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|
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mutex_lock(&twl6040->mutex); |
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|
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hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); |
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lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); |
|
|
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/* Force full reconfiguration when switching between PLL */ |
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if (pll_id != twl6040->pll) { |
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twl6040->sysclk_rate = 0; |
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twl6040->mclk_rate = 0; |
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} |
|
|
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switch (pll_id) { |
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case TWL6040_SYSCLK_SEL_LPPLL: |
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/* low-power PLL divider */ |
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/* Change the sysclk configuration only if it has been canged */ |
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if (twl6040->sysclk_rate != freq_out) { |
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switch (freq_out) { |
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case 17640000: |
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lppllctl |= TWL6040_LPLLFIN; |
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break; |
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case 19200000: |
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lppllctl &= ~TWL6040_LPLLFIN; |
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break; |
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default: |
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dev_err(twl6040->dev, |
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"freq_out %d not supported\n", |
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freq_out); |
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ret = -EINVAL; |
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goto pll_out; |
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} |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, |
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lppllctl); |
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} |
|
|
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/* The PLL in use has not been change, we can exit */ |
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if (twl6040->pll == pll_id) |
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break; |
|
|
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switch (freq_in) { |
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case 32768: |
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lppllctl |= TWL6040_LPLLENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, |
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lppllctl); |
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mdelay(5); |
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lppllctl &= ~TWL6040_HPLLSEL; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, |
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lppllctl); |
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hppllctl &= ~TWL6040_HPLLENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
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hppllctl); |
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break; |
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default: |
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dev_err(twl6040->dev, |
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"freq_in %d not supported\n", freq_in); |
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ret = -EINVAL; |
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goto pll_out; |
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} |
|
|
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clk_disable_unprepare(twl6040->mclk); |
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break; |
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case TWL6040_SYSCLK_SEL_HPPLL: |
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/* high-performance PLL can provide only 19.2 MHz */ |
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if (freq_out != 19200000) { |
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dev_err(twl6040->dev, |
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"freq_out %d not supported\n", freq_out); |
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ret = -EINVAL; |
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goto pll_out; |
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} |
|
|
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if (twl6040->mclk_rate != freq_in) { |
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hppllctl &= ~TWL6040_MCLK_MSK; |
|
|
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switch (freq_in) { |
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case 12000000: |
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/* PLL enabled, active mode */ |
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hppllctl |= TWL6040_MCLK_12000KHZ | |
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TWL6040_HPLLENA; |
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break; |
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case 19200000: |
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/* PLL enabled, bypass mode */ |
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hppllctl |= TWL6040_MCLK_19200KHZ | |
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TWL6040_HPLLBP | TWL6040_HPLLENA; |
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break; |
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case 26000000: |
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/* PLL enabled, active mode */ |
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hppllctl |= TWL6040_MCLK_26000KHZ | |
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TWL6040_HPLLENA; |
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break; |
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case 38400000: |
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/* PLL enabled, bypass mode */ |
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hppllctl |= TWL6040_MCLK_38400KHZ | |
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TWL6040_HPLLBP | TWL6040_HPLLENA; |
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break; |
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default: |
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dev_err(twl6040->dev, |
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"freq_in %d not supported\n", freq_in); |
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ret = -EINVAL; |
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goto pll_out; |
|
} |
|
|
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/* When switching to HPPLL, enable the mclk first */ |
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if (pll_id != twl6040->pll) |
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clk_prepare_enable(twl6040->mclk); |
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/* |
|
* enable clock slicer to ensure input waveform is |
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* square |
|
*/ |
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hppllctl |= TWL6040_HPLLSQRENA; |
|
|
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twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
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hppllctl); |
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usleep_range(500, 700); |
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lppllctl |= TWL6040_HPLLSEL; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, |
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lppllctl); |
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lppllctl &= ~TWL6040_LPLLENA; |
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twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, |
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lppllctl); |
|
|
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twl6040->mclk_rate = freq_in; |
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} |
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break; |
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default: |
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dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
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ret = -EINVAL; |
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goto pll_out; |
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} |
|
|
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twl6040->sysclk_rate = freq_out; |
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twl6040->pll = pll_id; |
|
|
|
pll_out: |
|
mutex_unlock(&twl6040->mutex); |
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return ret; |
|
} |
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EXPORT_SYMBOL(twl6040_set_pll); |
|
|
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int twl6040_get_pll(struct twl6040 *twl6040) |
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{ |
|
if (twl6040->power_count) |
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return twl6040->pll; |
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else |
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return -ENODEV; |
|
} |
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EXPORT_SYMBOL(twl6040_get_pll); |
|
|
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unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) |
|
{ |
|
return twl6040->sysclk_rate; |
|
} |
|
EXPORT_SYMBOL(twl6040_get_sysclk); |
|
|
|
/* Get the combined status of the vibra control register */ |
|
int twl6040_get_vibralr_status(struct twl6040 *twl6040) |
|
{ |
|
unsigned int reg; |
|
int ret; |
|
u8 status; |
|
|
|
ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLL, ®); |
|
if (ret != 0) |
|
return ret; |
|
status = reg; |
|
|
|
ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLR, ®); |
|
if (ret != 0) |
|
return ret; |
|
status |= reg; |
|
|
|
status &= (TWL6040_VIBENA | TWL6040_VIBSEL); |
|
|
|
return status; |
|
} |
|
EXPORT_SYMBOL(twl6040_get_vibralr_status); |
|
|
|
static struct resource twl6040_vibra_rsrc[] = { |
|
{ |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
static struct resource twl6040_codec_rsrc[] = { |
|
{ |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
|
{ |
|
/* Register 0 is not readable */ |
|
if (!reg) |
|
return false; |
|
return true; |
|
} |
|
|
|
static bool twl6040_volatile_reg(struct device *dev, unsigned int reg) |
|
{ |
|
switch (reg) { |
|
case TWL6040_REG_ASICID: |
|
case TWL6040_REG_ASICREV: |
|
case TWL6040_REG_INTID: |
|
case TWL6040_REG_LPPLLCTL: |
|
case TWL6040_REG_HPPLLCTL: |
|
case TWL6040_REG_STATUS: |
|
return true; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static bool twl6040_writeable_reg(struct device *dev, unsigned int reg) |
|
{ |
|
switch (reg) { |
|
case TWL6040_REG_ASICID: |
|
case TWL6040_REG_ASICREV: |
|
case TWL6040_REG_STATUS: |
|
return false; |
|
default: |
|
return true; |
|
} |
|
} |
|
|
|
static const struct regmap_config twl6040_regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
|
|
.reg_defaults = twl6040_defaults, |
|
.num_reg_defaults = ARRAY_SIZE(twl6040_defaults), |
|
|
|
.max_register = TWL6040_REG_STATUS, /* 0x2e */ |
|
|
|
.readable_reg = twl6040_readable_reg, |
|
.volatile_reg = twl6040_volatile_reg, |
|
.writeable_reg = twl6040_writeable_reg, |
|
|
|
.cache_type = REGCACHE_RBTREE, |
|
.use_single_read = true, |
|
.use_single_write = true, |
|
}; |
|
|
|
static const struct regmap_irq twl6040_irqs[] = { |
|
{ .reg_offset = 0, .mask = TWL6040_THINT, }, |
|
{ .reg_offset = 0, .mask = TWL6040_PLUGINT | TWL6040_UNPLUGINT, }, |
|
{ .reg_offset = 0, .mask = TWL6040_HOOKINT, }, |
|
{ .reg_offset = 0, .mask = TWL6040_HFINT, }, |
|
{ .reg_offset = 0, .mask = TWL6040_VIBINT, }, |
|
{ .reg_offset = 0, .mask = TWL6040_READYINT, }, |
|
}; |
|
|
|
static struct regmap_irq_chip twl6040_irq_chip = { |
|
.name = "twl6040", |
|
.irqs = twl6040_irqs, |
|
.num_irqs = ARRAY_SIZE(twl6040_irqs), |
|
|
|
.num_regs = 1, |
|
.status_base = TWL6040_REG_INTID, |
|
.mask_base = TWL6040_REG_INTMR, |
|
}; |
|
|
|
static int twl6040_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct device_node *node = client->dev.of_node; |
|
struct twl6040 *twl6040; |
|
struct mfd_cell *cell = NULL; |
|
int irq, ret, children = 0; |
|
|
|
if (!node) { |
|
dev_err(&client->dev, "of node is missing\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* In order to operate correctly we need valid interrupt config */ |
|
if (!client->irq) { |
|
dev_err(&client->dev, "Invalid IRQ configuration\n"); |
|
return -EINVAL; |
|
} |
|
|
|
twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
|
GFP_KERNEL); |
|
if (!twl6040) |
|
return -ENOMEM; |
|
|
|
twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
|
if (IS_ERR(twl6040->regmap)) |
|
return PTR_ERR(twl6040->regmap); |
|
|
|
i2c_set_clientdata(client, twl6040); |
|
|
|
twl6040->clk32k = devm_clk_get(&client->dev, "clk32k"); |
|
if (IS_ERR(twl6040->clk32k)) { |
|
if (PTR_ERR(twl6040->clk32k) == -EPROBE_DEFER) |
|
return -EPROBE_DEFER; |
|
dev_dbg(&client->dev, "clk32k is not handled\n"); |
|
twl6040->clk32k = NULL; |
|
} |
|
|
|
twl6040->mclk = devm_clk_get(&client->dev, "mclk"); |
|
if (IS_ERR(twl6040->mclk)) { |
|
if (PTR_ERR(twl6040->mclk) == -EPROBE_DEFER) |
|
return -EPROBE_DEFER; |
|
dev_dbg(&client->dev, "mclk is not handled\n"); |
|
twl6040->mclk = NULL; |
|
} |
|
|
|
twl6040->supplies[0].supply = "vio"; |
|
twl6040->supplies[1].supply = "v2v1"; |
|
ret = devm_regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, |
|
twl6040->supplies); |
|
if (ret != 0) { |
|
dev_err(&client->dev, "Failed to get supplies: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
|
if (ret != 0) { |
|
dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
twl6040->dev = &client->dev; |
|
twl6040->irq = client->irq; |
|
|
|
mutex_init(&twl6040->mutex); |
|
init_completion(&twl6040->ready); |
|
|
|
regmap_register_patch(twl6040->regmap, twl6040_patch, |
|
ARRAY_SIZE(twl6040_patch)); |
|
|
|
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); |
|
if (twl6040->rev < 0) { |
|
dev_err(&client->dev, "Failed to read revision register: %d\n", |
|
twl6040->rev); |
|
ret = twl6040->rev; |
|
goto gpio_err; |
|
} |
|
|
|
/* ERRATA: Automatic power-up is not possible in ES1.0 */ |
|
if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) |
|
twl6040->audpwron = of_get_named_gpio(node, |
|
"ti,audpwron-gpio", 0); |
|
else |
|
twl6040->audpwron = -EINVAL; |
|
|
|
if (gpio_is_valid(twl6040->audpwron)) { |
|
ret = devm_gpio_request_one(&client->dev, twl6040->audpwron, |
|
GPIOF_OUT_INIT_LOW, "audpwron"); |
|
if (ret) |
|
goto gpio_err; |
|
|
|
/* Clear any pending interrupt */ |
|
twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
|
} |
|
|
|
ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, IRQF_ONESHOT, |
|
0, &twl6040_irq_chip, &twl6040->irq_data); |
|
if (ret < 0) |
|
goto gpio_err; |
|
|
|
twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data, |
|
TWL6040_IRQ_READY); |
|
twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data, |
|
TWL6040_IRQ_TH); |
|
|
|
ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_ready, NULL, |
|
twl6040_readyint_handler, IRQF_ONESHOT, |
|
"twl6040_irq_ready", twl6040); |
|
if (ret) { |
|
dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret); |
|
goto readyirq_err; |
|
} |
|
|
|
ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_th, NULL, |
|
twl6040_thint_handler, IRQF_ONESHOT, |
|
"twl6040_irq_th", twl6040); |
|
if (ret) { |
|
dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret); |
|
goto readyirq_err; |
|
} |
|
|
|
/* |
|
* The main functionality of twl6040 to provide audio on OMAP4+ systems. |
|
* We can add the ASoC codec child whenever this driver has been loaded. |
|
*/ |
|
irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG); |
|
cell = &twl6040->cells[children]; |
|
cell->name = "twl6040-codec"; |
|
twl6040_codec_rsrc[0].start = irq; |
|
twl6040_codec_rsrc[0].end = irq; |
|
cell->resources = twl6040_codec_rsrc; |
|
cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); |
|
children++; |
|
|
|
/* Vibra input driver support */ |
|
if (twl6040_has_vibra(node)) { |
|
irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB); |
|
|
|
cell = &twl6040->cells[children]; |
|
cell->name = "twl6040-vibra"; |
|
twl6040_vibra_rsrc[0].start = irq; |
|
twl6040_vibra_rsrc[0].end = irq; |
|
cell->resources = twl6040_vibra_rsrc; |
|
cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); |
|
children++; |
|
} |
|
|
|
/* GPO support */ |
|
cell = &twl6040->cells[children]; |
|
cell->name = "twl6040-gpo"; |
|
children++; |
|
|
|
/* PDM clock support */ |
|
cell = &twl6040->cells[children]; |
|
cell->name = "twl6040-pdmclk"; |
|
children++; |
|
|
|
/* The chip is powered down so mark regmap to cache only and dirty */ |
|
regcache_cache_only(twl6040->regmap, true); |
|
regcache_mark_dirty(twl6040->regmap); |
|
|
|
ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
|
NULL, 0, NULL); |
|
if (ret) |
|
goto readyirq_err; |
|
|
|
return 0; |
|
|
|
readyirq_err: |
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
|
gpio_err: |
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
|
return ret; |
|
} |
|
|
|
static int twl6040_remove(struct i2c_client *client) |
|
{ |
|
struct twl6040 *twl6040 = i2c_get_clientdata(client); |
|
|
|
if (twl6040->power_count) |
|
twl6040_power(twl6040, 0); |
|
|
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
|
|
|
mfd_remove_devices(&client->dev); |
|
|
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id twl6040_i2c_id[] = { |
|
{ "twl6040", 0, }, |
|
{ "twl6041", 0, }, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); |
|
|
|
static struct i2c_driver twl6040_driver = { |
|
.driver = { |
|
.name = "twl6040", |
|
}, |
|
.probe = twl6040_probe, |
|
.remove = twl6040_remove, |
|
.id_table = twl6040_i2c_id, |
|
}; |
|
|
|
module_i2c_driver(twl6040_driver); |
|
|
|
MODULE_DESCRIPTION("TWL6040 MFD"); |
|
MODULE_AUTHOR("Misael Lopez Cruz <[email protected]>"); |
|
MODULE_AUTHOR("Jorge Eduardo Candelaria <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|