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linux-sg2042/drivers/mfd/twl6040.c

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/*
* MFD driver for TWL6040 audio device
*
* Authors: Misael Lopez Cruz <misael.lopez@ti.com>
* Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
* Peter Ujfalusi <peter.ujfalusi@ti.com>
*
* Copyright: (C) 2011 Texas Instruments, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/mfd/core.h>
#include <linux/mfd/twl6040.h>
#include <linux/regulator/consumer.h>
#define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1)
#define TWL6040_NUM_SUPPLIES (2)
static struct reg_default twl6040_defaults[] = {
{ 0x01, 0x4B }, /* REG_ASICID (ro) */
{ 0x02, 0x00 }, /* REG_ASICREV (ro) */
{ 0x03, 0x00 }, /* REG_INTID */
{ 0x04, 0x00 }, /* REG_INTMR */
{ 0x05, 0x00 }, /* REG_NCPCTRL */
{ 0x06, 0x00 }, /* REG_LDOCTL */
{ 0x07, 0x60 }, /* REG_HPPLLCTL */
{ 0x08, 0x00 }, /* REG_LPPLLCTL */
{ 0x09, 0x4A }, /* REG_LPPLLDIV */
{ 0x0A, 0x00 }, /* REG_AMICBCTL */
{ 0x0B, 0x00 }, /* REG_DMICBCTL */
{ 0x0C, 0x00 }, /* REG_MICLCTL */
{ 0x0D, 0x00 }, /* REG_MICRCTL */
{ 0x0E, 0x00 }, /* REG_MICGAIN */
{ 0x0F, 0x1B }, /* REG_LINEGAIN */
{ 0x10, 0x00 }, /* REG_HSLCTL */
{ 0x11, 0x00 }, /* REG_HSRCTL */
{ 0x12, 0x00 }, /* REG_HSGAIN */
{ 0x13, 0x00 }, /* REG_EARCTL */
{ 0x14, 0x00 }, /* REG_HFLCTL */
{ 0x15, 0x00 }, /* REG_HFLGAIN */
{ 0x16, 0x00 }, /* REG_HFRCTL */
{ 0x17, 0x00 }, /* REG_HFRGAIN */
{ 0x18, 0x00 }, /* REG_VIBCTLL */
{ 0x19, 0x00 }, /* REG_VIBDATL */
{ 0x1A, 0x00 }, /* REG_VIBCTLR */
{ 0x1B, 0x00 }, /* REG_VIBDATR */
{ 0x1C, 0x00 }, /* REG_HKCTL1 */
{ 0x1D, 0x00 }, /* REG_HKCTL2 */
{ 0x1E, 0x00 }, /* REG_GPOCTL */
{ 0x1F, 0x00 }, /* REG_ALB */
{ 0x20, 0x00 }, /* REG_DLB */
/* 0x28, REG_TRIM1 */
/* 0x29, REG_TRIM2 */
/* 0x2A, REG_TRIM3 */
/* 0x2B, REG_HSOTRIM */
/* 0x2C, REG_HFOTRIM */
{ 0x2D, 0x08 }, /* REG_ACCCTL */
{ 0x2E, 0x00 }, /* REG_STATUS (ro) */
};
static struct reg_default twl6040_patch[] = {
/*
* Select I2C bus access to dual access registers
* Interrupt register is cleared on read
* Select fast mode for i2c (400KHz)
*/
{ TWL6040_REG_ACCCTL,
TWL6040_I2CSEL | TWL6040_INTCLRMODE | TWL6040_I2CMODE(1) },
};
static bool twl6040_has_vibra(struct device_node *node)
{
#ifdef CONFIG_OF
if (of_find_node_by_name(node, "vibra"))
return true;
#endif
return false;
}
int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
{
int ret;
unsigned int val;
ret = regmap_read(twl6040->regmap, reg, &val);
if (ret < 0)
return ret;
return val;
}
EXPORT_SYMBOL(twl6040_reg_read);
int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val)
{
int ret;
ret = regmap_write(twl6040->regmap, reg, val);
return ret;
}
EXPORT_SYMBOL(twl6040_reg_write);
int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
return regmap_update_bits(twl6040->regmap, reg, mask, mask);
}
EXPORT_SYMBOL(twl6040_set_bits);
int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
return regmap_update_bits(twl6040->regmap, reg, mask, 0);
}
EXPORT_SYMBOL(twl6040_clear_bits);
/* twl6040 codec manual power-up sequence */
static int twl6040_power_up_manual(struct twl6040 *twl6040)
{
u8 ldoctl, ncpctl, lppllctl;
int ret;
/* enable high-side LDO, reference system and internal oscillator */
ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA;
ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
if (ret)
return ret;
usleep_range(10000, 10500);
/* enable negative charge pump */
ncpctl = TWL6040_NCPENA;
ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl);
if (ret)
goto ncp_err;
usleep_range(1000, 1500);
/* enable low-side LDO */
ldoctl |= TWL6040_LSLDOENA;
ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
if (ret)
goto lsldo_err;
usleep_range(1000, 1500);
/* enable low-power PLL */
lppllctl = TWL6040_LPLLENA;
ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl);
if (ret)
goto lppll_err;
usleep_range(5000, 5500);
/* disable internal oscillator */
ldoctl &= ~TWL6040_OSCENA;
ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
if (ret)
goto osc_err;
return 0;
osc_err:
lppllctl &= ~TWL6040_LPLLENA;
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl);
lppll_err:
ldoctl &= ~TWL6040_LSLDOENA;
twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
lsldo_err:
ncpctl &= ~TWL6040_NCPENA;
twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl);
ncp_err:
ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA);
twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
dev_err(twl6040->dev, "manual power-up failed\n");
return ret;
}
/* twl6040 manual power-down sequence */
static void twl6040_power_down_manual(struct twl6040 *twl6040)
{
u8 ncpctl, ldoctl, lppllctl;
ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL);
ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL);
lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL);
/* enable internal oscillator */
ldoctl |= TWL6040_OSCENA;
twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
usleep_range(1000, 1500);
/* disable low-power PLL */
lppllctl &= ~TWL6040_LPLLENA;
twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl);
/* disable low-side LDO */
ldoctl &= ~TWL6040_LSLDOENA;
twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
/* disable negative charge pump */
ncpctl &= ~TWL6040_NCPENA;
twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl);
/* disable high-side LDO, reference system and internal oscillator */
ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA);
twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
}
static irqreturn_t twl6040_readyint_handler(int irq, void *data)
{
struct twl6040 *twl6040 = data;
complete(&twl6040->ready);
return IRQ_HANDLED;
}
static irqreturn_t twl6040_thint_handler(int irq, void *data)
{
struct twl6040 *twl6040 = data;
u8 status;
status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
if (status & TWL6040_TSHUTDET) {
dev_warn(twl6040->dev, "Thermal shutdown, powering-off");
twl6040_power(twl6040, 0);
} else {
dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on");
twl6040_power(twl6040, 1);
}
return IRQ_HANDLED;
}
static int twl6040_power_up_automatic(struct twl6040 *twl6040)
{
int time_left;
gpio_set_value(twl6040->audpwron, 1);
time_left = wait_for_completion_timeout(&twl6040->ready,
msecs_to_jiffies(144));
if (!time_left) {
u8 intid;
dev_warn(twl6040->dev, "timeout waiting for READYINT\n");
intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID);
if (!(intid & TWL6040_READYINT)) {
dev_err(twl6040->dev, "automatic power-up failed\n");
gpio_set_value(twl6040->audpwron, 0);
return -ETIMEDOUT;
}
}
return 0;
}
int twl6040_power(struct twl6040 *twl6040, int on)
{
int ret = 0;
mutex_lock(&twl6040->mutex);
if (on) {
/* already powered-up */
if (twl6040->power_count++)
goto out;
clk_prepare_enable(twl6040->clk32k);
/* Allow writes to the chip */
regcache_cache_only(twl6040->regmap, false);
if (gpio_is_valid(twl6040->audpwron)) {
/* use automatic power-up sequence */
ret = twl6040_power_up_automatic(twl6040);
if (ret) {
twl6040->power_count = 0;
goto out;
}
} else {
/* use manual power-up sequence */
ret = twl6040_power_up_manual(twl6040);
if (ret) {
twl6040->power_count = 0;
goto out;
}
}
/* Sync with the HW */
regcache_sync(twl6040->regmap);
/* Default PLL configuration after power up */
twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL;
twl6040->sysclk = 19200000;
twl6040->mclk = 32768;
} else {
/* already powered-down */
if (!twl6040->power_count) {
dev_err(twl6040->dev,
"device is already powered-off\n");
ret = -EPERM;
goto out;
}
if (--twl6040->power_count)
goto out;
if (gpio_is_valid(twl6040->audpwron)) {
/* use AUDPWRON line */
gpio_set_value(twl6040->audpwron, 0);
/* power-down sequence latency */
usleep_range(500, 700);
} else {
/* use manual power-down sequence */
twl6040_power_down_manual(twl6040);
}
/* Set regmap to cache only and mark it as dirty */
regcache_cache_only(twl6040->regmap, true);
regcache_mark_dirty(twl6040->regmap);
twl6040->sysclk = 0;
twl6040->mclk = 0;
clk_disable_unprepare(twl6040->clk32k);
}
out:
mutex_unlock(&twl6040->mutex);
return ret;
}
EXPORT_SYMBOL(twl6040_power);
int twl6040_set_pll(struct twl6040 *twl6040, int pll_id,
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);
/* Force full reconfiguration when switching between PLL */
if (pll_id != twl6040->pll) {
twl6040->sysclk = 0;
twl6040->mclk = 0;
}
switch (pll_id) {
case TWL6040_SYSCLK_SEL_LPPLL:
/* low-power PLL divider */
/* 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);
}
/* The PLL in use has not been change, we can exit */
if (twl6040->pll == pll_id)
break;
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:
dev_err(twl6040->dev,
"freq_in %d not supported\n", freq_in);
ret = -EINVAL;
goto pll_out;
}
break;
case TWL6040_SYSCLK_SEL_HPPLL:
/* high-performance PLL can provide only 19.2 MHz */
if (freq_out != 19200000) {
dev_err(twl6040->dev,
"freq_out %d not supported\n", freq_out);
ret = -EINVAL;
goto pll_out;
}
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 enabled, bypass mode */
hppllctl |= TWL6040_MCLK_19200KHZ |
TWL6040_HPLLBP | TWL6040_HPLLENA;
break;
case 26000000:
/* PLL enabled, active mode */
hppllctl |= TWL6040_MCLK_26000KHZ |
TWL6040_HPLLENA;
break;
case 38400000:
/* PLL enabled, bypass mode */
hppllctl |= TWL6040_MCLK_38400KHZ |
TWL6040_HPLLBP | TWL6040_HPLLENA;
break;
default:
dev_err(twl6040->dev,
"freq_in %d not supported\n", freq_in);
ret = -EINVAL;
goto pll_out;
}
/*
* enable clock slicer to ensure input waveform is
* square
*/
hppllctl |= TWL6040_HPLLSQRENA;
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);
}
break;
default:
dev_err(twl6040->dev, "unknown pll id %d\n", pll_id);
ret = -EINVAL;
goto pll_out;
}
twl6040->sysclk = freq_out;
twl6040->mclk = freq_in;
twl6040->pll = pll_id;
pll_out:
mutex_unlock(&twl6040->mutex);
return ret;
}
EXPORT_SYMBOL(twl6040_set_pll);
int twl6040_get_pll(struct twl6040 *twl6040)
{
if (twl6040->power_count)
return twl6040->pll;
else
return -ENODEV;
}
EXPORT_SYMBOL(twl6040_get_pll);
unsigned int twl6040_get_sysclk(struct twl6040 *twl6040)
{
return twl6040->sysclk;
}
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, &reg);
if (ret != 0)
return ret;
status = reg;
ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLR, &reg);
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 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,
};
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)) {
dev_info(&client->dev, "clk32k is not handled\n");
twl6040->clk32k = 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++;
/* 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",
.owner = THIS_MODULE,
},
.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 <misael.lopez@ti.com>");
MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:twl6040");
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