2011-04-27 09:14:07 +02:00
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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 <misael.lopez@ti.com>
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* Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
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* Peter Ujfalusi <peter.ujfalusi@ti.com>
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*
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* Copyright: (C) 2011 Texas Instruments, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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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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2012-05-02 15:54:42 +02:00
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#include <linux/err.h>
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2011-04-27 09:14:07 +02:00
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#include <linux/platform_device.h>
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2012-05-16 13:11:58 +02:00
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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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2011-04-27 09:14:07 +02:00
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#include <linux/gpio.h>
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#include <linux/delay.h>
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2012-04-03 10:56:51 +02:00
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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2011-04-27 09:14:07 +02:00
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#include <linux/mfd/core.h>
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#include <linux/mfd/twl6040.h>
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2012-05-02 15:54:42 +02:00
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#include <linux/regulator/consumer.h>
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2011-04-27 09:14:07 +02:00
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2011-10-12 10:57:54 +02:00
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#define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1)
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2012-05-02 15:54:42 +02:00
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#define TWL6040_NUM_SUPPLIES (2)
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2011-10-12 10:57:54 +02:00
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2013-11-29 15:03:45 +01:00
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static 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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2013-12-21 03:14:13 +01:00
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static struct reg_default twl6040_patch[] = {
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2014-04-01 15:44:59 +02:00
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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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2013-11-29 15:03:45 +01:00
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};
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2013-07-12 13:32:02 +02:00
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static bool twl6040_has_vibra(struct device_node *node)
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2012-05-23 16:23:21 +02:00
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{
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#ifdef CONFIG_OF
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if (of_find_node_by_name(node, "vibra"))
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return true;
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#endif
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return false;
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}
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2011-04-27 09:14:07 +02:00
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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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2012-04-03 10:56:51 +02:00
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unsigned int val;
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2011-04-27 09:14:07 +02:00
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2013-08-31 18:48:19 +02:00
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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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2011-04-27 09:14:07 +02:00
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return val;
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}
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EXPORT_SYMBOL(twl6040_reg_read);
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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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2012-04-03 10:56:51 +02:00
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ret = regmap_write(twl6040->regmap, reg, val);
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2011-04-27 09:14:07 +02:00
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return ret;
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}
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EXPORT_SYMBOL(twl6040_reg_write);
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int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
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{
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2012-07-11 04:06:34 +02:00
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return regmap_update_bits(twl6040->regmap, reg, mask, mask);
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2011-04-27 09:14:07 +02:00
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}
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EXPORT_SYMBOL(twl6040_set_bits);
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int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
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{
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2012-07-11 04:06:34 +02:00
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return regmap_update_bits(twl6040->regmap, reg, mask, 0);
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2011-04-27 09:14:07 +02:00
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}
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EXPORT_SYMBOL(twl6040_clear_bits);
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/* twl6040 codec manual power-up sequence */
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2012-10-11 13:55:30 +02:00
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static int twl6040_power_up_manual(struct twl6040 *twl6040)
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2011-04-27 09:14:07 +02:00
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{
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u8 ldoctl, ncpctl, lppllctl;
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int ret;
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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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/* 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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/* 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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/* 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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/* 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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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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2012-10-11 13:55:30 +02:00
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dev_err(twl6040->dev, "manual power-up failed\n");
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2011-04-27 09:14:07 +02:00
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return ret;
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}
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/* twl6040 manual power-down sequence */
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2012-10-11 13:55:30 +02:00
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static void twl6040_power_down_manual(struct twl6040 *twl6040)
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2011-04-27 09:14:07 +02:00
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{
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u8 ncpctl, ldoctl, lppllctl;
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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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/* 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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/* 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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/* 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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/* 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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/* 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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2012-10-11 13:55:31 +02:00
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static irqreturn_t twl6040_readyint_handler(int irq, void *data)
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2011-04-27 09:14:07 +02:00
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{
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struct twl6040 *twl6040 = data;
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2012-10-11 13:55:31 +02:00
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complete(&twl6040->ready);
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2011-04-27 09:14:07 +02:00
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2012-10-11 13:55:31 +02:00
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return IRQ_HANDLED;
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}
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2011-04-27 09:14:07 +02:00
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2012-10-11 13:55:31 +02:00
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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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2011-04-27 09:14:07 +02:00
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}
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return IRQ_HANDLED;
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}
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2012-10-11 13:55:30 +02:00
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static int twl6040_power_up_automatic(struct twl6040 *twl6040)
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2011-04-27 09:14:07 +02:00
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{
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int time_left;
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2012-10-11 13:55:30 +02:00
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gpio_set_value(twl6040->audpwron, 1);
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2011-04-27 09:14:07 +02:00
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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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2012-10-11 13:55:30 +02:00
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u8 intid;
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dev_warn(twl6040->dev, "timeout waiting for READYINT\n");
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2011-04-27 09:14:07 +02:00
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intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID);
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if (!(intid & TWL6040_READYINT)) {
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2012-10-11 13:55:30 +02:00
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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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2011-04-27 09:14:07 +02:00
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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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2013-11-29 15:03:45 +01:00
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/* Allow writes to the chip */
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regcache_cache_only(twl6040->regmap, false);
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2012-10-11 13:55:30 +02:00
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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);
|
2011-04-27 09:14:07 +02:00
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if (ret) {
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twl6040->power_count = 0;
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|
goto out;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* use manual power-up sequence */
|
2012-10-11 13:55:30 +02:00
|
|
|
ret = twl6040_power_up_manual(twl6040);
|
2011-04-27 09:14:07 +02:00
|
|
|
if (ret) {
|
|
|
|
twl6040->power_count = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
2013-11-29 15:03:45 +01:00
|
|
|
|
|
|
|
/* Sync with the HW */
|
|
|
|
regcache_sync(twl6040->regmap);
|
|
|
|
|
2011-07-04 09:28:28 +02:00
|
|
|
/* Default PLL configuration after power up */
|
|
|
|
twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL;
|
2011-04-27 09:14:07 +02:00
|
|
|
twl6040->sysclk = 19200000;
|
2012-01-14 20:58:43 +01:00
|
|
|
twl6040->mclk = 32768;
|
2011-04-27 09:14:07 +02:00
|
|
|
} else {
|
|
|
|
/* already powered-down */
|
|
|
|
if (!twl6040->power_count) {
|
2011-09-15 14:39:23 +02:00
|
|
|
dev_err(twl6040->dev,
|
2011-04-27 09:14:07 +02:00
|
|
|
"device is already powered-off\n");
|
|
|
|
ret = -EPERM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (--twl6040->power_count)
|
|
|
|
goto out;
|
|
|
|
|
2012-10-11 13:55:30 +02:00
|
|
|
if (gpio_is_valid(twl6040->audpwron)) {
|
2011-04-27 09:14:07 +02:00
|
|
|
/* use AUDPWRON line */
|
2012-10-11 13:55:30 +02:00
|
|
|
gpio_set_value(twl6040->audpwron, 0);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
/* power-down sequence latency */
|
|
|
|
usleep_range(500, 700);
|
|
|
|
} else {
|
|
|
|
/* use manual power-down sequence */
|
2012-10-11 13:55:30 +02:00
|
|
|
twl6040_power_down_manual(twl6040);
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
2013-11-29 15:03:45 +01:00
|
|
|
|
|
|
|
/* Set regmap to cache only and mark it as dirty */
|
|
|
|
regcache_cache_only(twl6040->regmap, true);
|
|
|
|
regcache_mark_dirty(twl6040->regmap);
|
|
|
|
|
2011-04-27 09:14:07 +02:00
|
|
|
twl6040->sysclk = 0;
|
2012-01-14 20:58:43 +01:00
|
|
|
twl6040->mclk = 0;
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
mutex_unlock(&twl6040->mutex);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(twl6040_power);
|
|
|
|
|
2011-07-04 09:28:28 +02:00
|
|
|
int twl6040_set_pll(struct twl6040 *twl6040, int pll_id,
|
2011-04-27 09:14:07 +02:00
|
|
|
unsigned int freq_in, unsigned int freq_out)
|
|
|
|
{
|
|
|
|
u8 hppllctl, lppllctl;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
mutex_lock(&twl6040->mutex);
|
|
|
|
|
|
|
|
hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL);
|
|
|
|
lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL);
|
|
|
|
|
2012-01-14 20:58:44 +01:00
|
|
|
/* Force full reconfiguration when switching between PLL */
|
|
|
|
if (pll_id != twl6040->pll) {
|
|
|
|
twl6040->sysclk = 0;
|
|
|
|
twl6040->mclk = 0;
|
|
|
|
}
|
|
|
|
|
2011-07-04 09:28:28 +02:00
|
|
|
switch (pll_id) {
|
|
|
|
case TWL6040_SYSCLK_SEL_LPPLL:
|
2011-04-27 09:14:07 +02:00
|
|
|
/* low-power PLL divider */
|
2012-01-14 20:58:44 +01:00
|
|
|
/* Change the sysclk configuration only if it has been canged */
|
|
|
|
if (twl6040->sysclk != freq_out) {
|
|
|
|
switch (freq_out) {
|
|
|
|
case 17640000:
|
|
|
|
lppllctl |= TWL6040_LPLLFIN;
|
|
|
|
break;
|
|
|
|
case 19200000:
|
|
|
|
lppllctl &= ~TWL6040_LPLLFIN;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
dev_err(twl6040->dev,
|
|
|
|
"freq_out %d not supported\n",
|
|
|
|
freq_out);
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto pll_out;
|
|
|
|
}
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL,
|
|
|
|
lppllctl);
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
2012-01-14 20:58:44 +01:00
|
|
|
|
|
|
|
/* The PLL in use has not been change, we can exit */
|
|
|
|
if (twl6040->pll == pll_id)
|
|
|
|
break;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
switch (freq_in) {
|
|
|
|
case 32768:
|
|
|
|
lppllctl |= TWL6040_LPLLENA;
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL,
|
|
|
|
lppllctl);
|
|
|
|
mdelay(5);
|
|
|
|
lppllctl &= ~TWL6040_HPLLSEL;
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL,
|
|
|
|
lppllctl);
|
|
|
|
hppllctl &= ~TWL6040_HPLLENA;
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL,
|
|
|
|
hppllctl);
|
|
|
|
break;
|
|
|
|
default:
|
2011-09-15 14:39:23 +02:00
|
|
|
dev_err(twl6040->dev,
|
2011-04-27 09:14:07 +02:00
|
|
|
"freq_in %d not supported\n", freq_in);
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto pll_out;
|
|
|
|
}
|
|
|
|
break;
|
2011-07-04 09:28:28 +02:00
|
|
|
case TWL6040_SYSCLK_SEL_HPPLL:
|
2011-04-27 09:14:07 +02:00
|
|
|
/* high-performance PLL can provide only 19.2 MHz */
|
|
|
|
if (freq_out != 19200000) {
|
2011-09-15 14:39:23 +02:00
|
|
|
dev_err(twl6040->dev,
|
2011-04-27 09:14:07 +02:00
|
|
|
"freq_out %d not supported\n", freq_out);
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto pll_out;
|
|
|
|
}
|
|
|
|
|
2012-01-14 20:58:44 +01:00
|
|
|
if (twl6040->mclk != freq_in) {
|
|
|
|
hppllctl &= ~TWL6040_MCLK_MSK;
|
|
|
|
|
|
|
|
switch (freq_in) {
|
|
|
|
case 12000000:
|
|
|
|
/* PLL enabled, active mode */
|
|
|
|
hppllctl |= TWL6040_MCLK_12000KHZ |
|
|
|
|
TWL6040_HPLLENA;
|
|
|
|
break;
|
|
|
|
case 19200000:
|
|
|
|
/*
|
|
|
|
* PLL disabled
|
|
|
|
* (enable PLL if MCLK jitter quality
|
|
|
|
* doesn't meet specification)
|
|
|
|
*/
|
|
|
|
hppllctl |= TWL6040_MCLK_19200KHZ;
|
|
|
|
break;
|
|
|
|
case 26000000:
|
|
|
|
/* PLL enabled, active mode */
|
|
|
|
hppllctl |= TWL6040_MCLK_26000KHZ |
|
|
|
|
TWL6040_HPLLENA;
|
|
|
|
break;
|
|
|
|
case 38400000:
|
|
|
|
/* PLL enabled, active mode */
|
|
|
|
hppllctl |= TWL6040_MCLK_38400KHZ |
|
|
|
|
TWL6040_HPLLENA;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
dev_err(twl6040->dev,
|
|
|
|
"freq_in %d not supported\n", freq_in);
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto pll_out;
|
|
|
|
}
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
/*
|
2012-01-14 20:58:44 +01:00
|
|
|
* enable clock slicer to ensure input waveform is
|
|
|
|
* square
|
2011-04-27 09:14:07 +02:00
|
|
|
*/
|
2012-01-14 20:58:44 +01:00
|
|
|
hppllctl |= TWL6040_HPLLSQRENA;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-01-14 20:58:44 +01:00
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL,
|
|
|
|
hppllctl);
|
|
|
|
usleep_range(500, 700);
|
|
|
|
lppllctl |= TWL6040_HPLLSEL;
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL,
|
|
|
|
lppllctl);
|
|
|
|
lppllctl &= ~TWL6040_LPLLENA;
|
|
|
|
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL,
|
|
|
|
lppllctl);
|
|
|
|
}
|
2011-04-27 09:14:07 +02:00
|
|
|
break;
|
|
|
|
default:
|
2011-09-15 14:39:23 +02:00
|
|
|
dev_err(twl6040->dev, "unknown pll id %d\n", pll_id);
|
2011-04-27 09:14:07 +02:00
|
|
|
ret = -EINVAL;
|
|
|
|
goto pll_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
twl6040->sysclk = freq_out;
|
2012-01-14 20:58:43 +01:00
|
|
|
twl6040->mclk = freq_in;
|
2011-07-04 09:28:28 +02:00
|
|
|
twl6040->pll = pll_id;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
pll_out:
|
|
|
|
mutex_unlock(&twl6040->mutex);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(twl6040_set_pll);
|
|
|
|
|
2011-07-04 09:28:28 +02:00
|
|
|
int twl6040_get_pll(struct twl6040 *twl6040)
|
2011-04-27 09:14:07 +02:00
|
|
|
{
|
2011-07-04 09:28:28 +02:00
|
|
|
if (twl6040->power_count)
|
|
|
|
return twl6040->pll;
|
|
|
|
else
|
|
|
|
return -ENODEV;
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(twl6040_get_pll);
|
|
|
|
|
|
|
|
unsigned int twl6040_get_sysclk(struct twl6040 *twl6040)
|
|
|
|
{
|
|
|
|
return twl6040->sysclk;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(twl6040_get_sysclk);
|
|
|
|
|
2011-10-12 10:57:55 +02:00
|
|
|
/* Get the combined status of the vibra control register */
|
|
|
|
int twl6040_get_vibralr_status(struct twl6040 *twl6040)
|
|
|
|
{
|
2013-08-31 18:48:19 +02:00
|
|
|
unsigned int reg;
|
|
|
|
int ret;
|
2011-10-12 10:57:55 +02:00
|
|
|
u8 status;
|
|
|
|
|
2013-08-31 18:48:19 +02:00
|
|
|
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;
|
|
|
|
|
2011-10-12 10:57:55 +02:00
|
|
|
status &= (TWL6040_VIBENA | TWL6040_VIBSEL);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(twl6040_get_vibralr_status);
|
|
|
|
|
2011-07-05 10:40:33 +02:00
|
|
|
static struct resource twl6040_vibra_rsrc[] = {
|
|
|
|
{
|
|
|
|
.flags = IORESOURCE_IRQ,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct resource twl6040_codec_rsrc[] = {
|
|
|
|
{
|
|
|
|
.flags = IORESOURCE_IRQ,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
static bool twl6040_readable_reg(struct device *dev, unsigned int reg)
|
2011-04-27 09:14:07 +02:00
|
|
|
{
|
2012-04-03 10:56:51 +02:00
|
|
|
/* Register 0 is not readable */
|
|
|
|
if (!reg)
|
|
|
|
return false;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2013-08-31 18:48:19 +02:00
|
|
|
static bool twl6040_volatile_reg(struct device *dev, unsigned int reg)
|
|
|
|
{
|
|
|
|
switch (reg) {
|
2013-11-29 15:03:45 +01:00
|
|
|
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:
|
2013-08-31 18:48:19 +02:00
|
|
|
return false;
|
|
|
|
default:
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
static struct regmap_config twl6040_regmap_config = {
|
|
|
|
.reg_bits = 8,
|
|
|
|
.val_bits = 8,
|
2013-11-29 15:03:45 +01:00
|
|
|
|
|
|
|
.reg_defaults = twl6040_defaults,
|
|
|
|
.num_reg_defaults = ARRAY_SIZE(twl6040_defaults),
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
.max_register = TWL6040_REG_STATUS, /* 0x2e */
|
|
|
|
|
|
|
|
.readable_reg = twl6040_readable_reg,
|
2013-08-31 18:48:19 +02:00
|
|
|
.volatile_reg = twl6040_volatile_reg,
|
2013-11-29 15:03:45 +01:00
|
|
|
.writeable_reg = twl6040_writeable_reg,
|
2013-08-31 18:48:19 +02:00
|
|
|
|
|
|
|
.cache_type = REGCACHE_RBTREE,
|
2012-04-03 10:56:51 +02:00
|
|
|
};
|
|
|
|
|
2012-10-11 13:55:32 +02:00
|
|
|
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,
|
|
|
|
};
|
|
|
|
|
2012-12-22 00:03:15 +01:00
|
|
|
static int twl6040_probe(struct i2c_client *client,
|
|
|
|
const struct i2c_device_id *id)
|
2012-04-03 10:56:51 +02:00
|
|
|
{
|
2012-05-16 13:11:58 +02:00
|
|
|
struct device_node *node = client->dev.of_node;
|
2011-04-27 09:14:07 +02:00
|
|
|
struct twl6040 *twl6040;
|
|
|
|
struct mfd_cell *cell = NULL;
|
2012-05-16 13:11:57 +02:00
|
|
|
int irq, ret, children = 0;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2013-07-12 13:32:02 +02:00
|
|
|
if (!node) {
|
|
|
|
dev_err(&client->dev, "of node is missing\n");
|
2011-04-27 09:14:07 +02:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-07-04 19:15:19 +02:00
|
|
|
/* In order to operate correctly we need valid interrupt config */
|
2012-05-16 13:11:56 +02:00
|
|
|
if (!client->irq) {
|
2012-04-03 10:56:51 +02:00
|
|
|
dev_err(&client->dev, "Invalid IRQ configuration\n");
|
2011-07-04 19:15:19 +02:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040),
|
|
|
|
GFP_KERNEL);
|
2013-07-12 13:32:04 +02:00
|
|
|
if (!twl6040)
|
|
|
|
return -ENOMEM;
|
2012-04-03 10:56:51 +02:00
|
|
|
|
2012-04-25 04:09:46 +02:00
|
|
|
twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config);
|
2013-07-12 13:32:04 +02:00
|
|
|
if (IS_ERR(twl6040->regmap))
|
|
|
|
return PTR_ERR(twl6040->regmap);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
i2c_set_clientdata(client, twl6040);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-05-02 15:54:42 +02:00
|
|
|
twl6040->supplies[0].supply = "vio";
|
|
|
|
twl6040->supplies[1].supply = "v2v1";
|
2013-02-20 10:30:21 +01:00
|
|
|
ret = devm_regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES,
|
2013-07-12 13:32:03 +02:00
|
|
|
twl6040->supplies);
|
2012-05-02 15:54:42 +02:00
|
|
|
if (ret != 0) {
|
|
|
|
dev_err(&client->dev, "Failed to get supplies: %d\n", ret);
|
2013-10-13 18:06:12 +02:00
|
|
|
return ret;
|
2012-05-02 15:54:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
|
|
if (ret != 0) {
|
|
|
|
dev_err(&client->dev, "Failed to enable supplies: %d\n", ret);
|
2013-10-13 18:06:12 +02:00
|
|
|
return ret;
|
2012-05-02 15:54:42 +02:00
|
|
|
}
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
twl6040->dev = &client->dev;
|
|
|
|
twl6040->irq = client->irq;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
mutex_init(&twl6040->mutex);
|
|
|
|
init_completion(&twl6040->ready);
|
|
|
|
|
|
|
|
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);
|
2014-02-25 14:28:19 +01:00
|
|
|
if (twl6040->rev < 0) {
|
|
|
|
dev_err(&client->dev, "Failed to read revision register: %d\n",
|
|
|
|
twl6040->rev);
|
|
|
|
goto gpio_err;
|
|
|
|
}
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2011-09-15 14:39:26 +02:00
|
|
|
/* ERRATA: Automatic power-up is not possible in ES1.0 */
|
2013-07-12 13:32:02 +02:00
|
|
|
if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0)
|
|
|
|
twl6040->audpwron = of_get_named_gpio(node,
|
|
|
|
"ti,audpwron-gpio", 0);
|
|
|
|
else
|
2011-09-15 14:39:26 +02:00
|
|
|
twl6040->audpwron = -EINVAL;
|
|
|
|
|
2011-04-27 09:14:07 +02:00
|
|
|
if (gpio_is_valid(twl6040->audpwron)) {
|
2013-02-20 10:30:21 +01:00
|
|
|
ret = devm_gpio_request_one(&client->dev, twl6040->audpwron,
|
2013-07-12 13:32:03 +02:00
|
|
|
GPIOF_OUT_INIT_LOW, "audpwron");
|
2011-04-27 09:14:07 +02:00
|
|
|
if (ret)
|
2012-05-02 15:54:42 +02:00
|
|
|
goto gpio_err;
|
2014-04-01 15:45:01 +02:00
|
|
|
|
|
|
|
/* Clear any pending interrupt */
|
|
|
|
twl6040_reg_read(twl6040, TWL6040_REG_INTID);
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
|
|
|
|
2013-07-12 13:32:03 +02:00
|
|
|
ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, IRQF_ONESHOT,
|
|
|
|
0, &twl6040_irq_chip,&twl6040->irq_data);
|
2012-10-11 13:55:32 +02:00
|
|
|
if (ret < 0)
|
2013-02-20 10:30:21 +01:00
|
|
|
goto gpio_err;
|
2011-07-04 19:15:19 +02:00
|
|
|
|
2012-10-11 13:55:32 +02:00
|
|
|
twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data,
|
2013-07-12 13:32:03 +02:00
|
|
|
TWL6040_IRQ_READY);
|
2012-10-11 13:55:32 +02:00
|
|
|
twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data,
|
2013-07-12 13:32:03 +02:00
|
|
|
TWL6040_IRQ_TH);
|
2012-10-11 13:55:32 +02:00
|
|
|
|
2013-02-20 10:30:21 +01:00
|
|
|
ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_ready, NULL,
|
2013-07-12 13:32:03 +02:00
|
|
|
twl6040_readyint_handler, IRQF_ONESHOT,
|
|
|
|
"twl6040_irq_ready", twl6040);
|
2011-07-04 19:15:19 +02:00
|
|
|
if (ret) {
|
2012-10-11 13:55:31 +02:00
|
|
|
dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret);
|
|
|
|
goto readyirq_err;
|
|
|
|
}
|
|
|
|
|
2013-02-20 10:30:21 +01:00
|
|
|
ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_th, NULL,
|
2013-07-12 13:32:03 +02:00
|
|
|
twl6040_thint_handler, IRQF_ONESHOT,
|
|
|
|
"twl6040_irq_th", twl6040);
|
2012-10-11 13:55:31 +02:00
|
|
|
if (ret) {
|
|
|
|
dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret);
|
2013-09-25 09:37:15 +02:00
|
|
|
goto readyirq_err;
|
2011-04-27 09:14:07 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* dual-access registers controlled by I2C only */
|
2013-11-29 15:03:45 +01:00
|
|
|
regmap_register_patch(twl6040->regmap, twl6040_patch,
|
|
|
|
ARRAY_SIZE(twl6040_patch));
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-05-16 13:11:57 +02:00
|
|
|
/*
|
|
|
|
* The main functionality of twl6040 to provide audio on OMAP4+ systems.
|
|
|
|
* We can add the ASoC codec child whenever this driver has been loaded.
|
|
|
|
*/
|
2012-10-11 13:55:32 +02:00
|
|
|
irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG);
|
2012-05-16 13:11:57 +02:00
|
|
|
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++;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2013-07-12 13:32:02 +02:00
|
|
|
/* Vibra input driver support */
|
|
|
|
if (twl6040_has_vibra(node)) {
|
2012-10-11 13:55:32 +02:00
|
|
|
irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB);
|
2011-07-05 10:40:33 +02:00
|
|
|
|
2011-04-27 09:14:07 +02:00
|
|
|
cell = &twl6040->cells[children];
|
|
|
|
cell->name = "twl6040-vibra";
|
2011-07-05 10:40:33 +02:00
|
|
|
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);
|
2011-04-27 09:14:07 +02:00
|
|
|
children++;
|
|
|
|
}
|
|
|
|
|
2013-07-12 13:32:02 +02:00
|
|
|
/* GPO support */
|
|
|
|
cell = &twl6040->cells[children];
|
|
|
|
cell->name = "twl6040-gpo";
|
|
|
|
children++;
|
2012-08-16 14:13:14 +02:00
|
|
|
|
2013-11-29 15:03:45 +01:00
|
|
|
/* The chip is powered down so mark regmap to cache only and dirty */
|
|
|
|
regcache_cache_only(twl6040->regmap, true);
|
|
|
|
regcache_mark_dirty(twl6040->regmap);
|
|
|
|
|
2012-05-16 13:11:57 +02:00
|
|
|
ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children,
|
2012-09-11 09:16:36 +02:00
|
|
|
NULL, 0, NULL);
|
2012-05-16 13:11:57 +02:00
|
|
|
if (ret)
|
2013-09-25 09:37:15 +02:00
|
|
|
goto readyirq_err;
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2012-10-11 13:55:31 +02:00
|
|
|
readyirq_err:
|
2012-10-11 13:55:32 +02:00
|
|
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data);
|
2012-05-02 15:54:42 +02:00
|
|
|
gpio_err:
|
|
|
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
2011-04-27 09:14:07 +02:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-12-22 00:03:15 +01:00
|
|
|
static int twl6040_remove(struct i2c_client *client)
|
2011-04-27 09:14:07 +02:00
|
|
|
{
|
2012-04-03 10:56:51 +02:00
|
|
|
struct twl6040 *twl6040 = i2c_get_clientdata(client);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
if (twl6040->power_count)
|
|
|
|
twl6040_power(twl6040, 0);
|
|
|
|
|
2012-10-11 13:55:32 +02:00
|
|
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
mfd_remove_devices(&client->dev);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
2012-05-02 15:54:42 +02:00
|
|
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
|
|
|
2011-04-27 09:14:07 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
static const struct i2c_device_id twl6040_i2c_id[] = {
|
|
|
|
{ "twl6040", 0, },
|
2012-07-16 11:49:44 +02:00
|
|
|
{ "twl6041", 0, },
|
2012-04-03 10:56:51 +02:00
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id);
|
|
|
|
|
|
|
|
static struct i2c_driver twl6040_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "twl6040",
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
2011-04-27 09:14:07 +02:00
|
|
|
.probe = twl6040_probe,
|
2012-12-22 00:03:15 +01:00
|
|
|
.remove = twl6040_remove,
|
2012-04-03 10:56:51 +02:00
|
|
|
.id_table = twl6040_i2c_id,
|
2011-04-27 09:14:07 +02:00
|
|
|
};
|
|
|
|
|
2012-04-03 10:56:51 +02:00
|
|
|
module_i2c_driver(twl6040_driver);
|
2011-04-27 09:14:07 +02:00
|
|
|
|
|
|
|
MODULE_DESCRIPTION("TWL6040 MFD");
|
|
|
|
MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
|
|
|
|
MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_ALIAS("platform:twl6040");
|