mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Greg Kroah-Hartman](/assets/img/avatar_default.png)
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
748 lines
19 KiB
C
748 lines
19 KiB
C
/*
|
|
* 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 bool twl6040_has_vibra(struct twl6040_platform_data *pdata,
|
|
struct device_node *node)
|
|
{
|
|
if (pdata && pdata->vibra)
|
|
return true;
|
|
|
|
#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;
|
|
|
|
/* Vibra control registers from cache */
|
|
if (unlikely(reg == TWL6040_REG_VIBCTLL ||
|
|
reg == TWL6040_REG_VIBCTLR)) {
|
|
val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)];
|
|
} else {
|
|
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);
|
|
/* Cache the vibra control registers */
|
|
if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR)
|
|
twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(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;
|
|
|
|
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;
|
|
}
|
|
}
|
|
/* 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);
|
|
}
|
|
twl6040->sysclk = 0;
|
|
twl6040->mclk = 0;
|
|
}
|
|
|
|
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 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;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
u8 status;
|
|
|
|
status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1];
|
|
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 struct regmap_config twl6040_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = TWL6040_REG_STATUS, /* 0x2e */
|
|
|
|
.readable_reg = twl6040_readable_reg,
|
|
};
|
|
|
|
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 twl6040_platform_data *pdata = client->dev.platform_data;
|
|
struct device_node *node = client->dev.of_node;
|
|
struct twl6040 *twl6040;
|
|
struct mfd_cell *cell = NULL;
|
|
int irq, ret, children = 0;
|
|
|
|
if (!pdata && !node) {
|
|
dev_err(&client->dev, "Platform data 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) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config);
|
|
if (IS_ERR(twl6040->regmap)) {
|
|
ret = PTR_ERR(twl6040->regmap);
|
|
goto err;
|
|
}
|
|
|
|
i2c_set_clientdata(client, twl6040);
|
|
|
|
twl6040->supplies[0].supply = "vio";
|
|
twl6040->supplies[1].supply = "v2v1";
|
|
ret = regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES,
|
|
twl6040->supplies);
|
|
if (ret != 0) {
|
|
dev_err(&client->dev, "Failed to get supplies: %d\n", ret);
|
|
goto regulator_get_err;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
if (ret != 0) {
|
|
dev_err(&client->dev, "Failed to enable supplies: %d\n", ret);
|
|
goto power_err;
|
|
}
|
|
|
|
twl6040->dev = &client->dev;
|
|
twl6040->irq = client->irq;
|
|
|
|
mutex_init(&twl6040->mutex);
|
|
init_completion(&twl6040->ready);
|
|
|
|
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);
|
|
|
|
/* ERRATA: Automatic power-up is not possible in ES1.0 */
|
|
if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) {
|
|
if (pdata)
|
|
twl6040->audpwron = pdata->audpwron_gpio;
|
|
else
|
|
twl6040->audpwron = of_get_named_gpio(node,
|
|
"ti,audpwron-gpio", 0);
|
|
} else
|
|
twl6040->audpwron = -EINVAL;
|
|
|
|
if (gpio_is_valid(twl6040->audpwron)) {
|
|
ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW,
|
|
"audpwron");
|
|
if (ret)
|
|
goto gpio_err;
|
|
}
|
|
|
|
ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq,
|
|
IRQF_ONESHOT, 0, &twl6040_irq_chip,
|
|
&twl6040->irq_data);
|
|
if (ret < 0)
|
|
goto irq_init_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 = request_threaded_irq(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 = request_threaded_irq(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 thirq_err;
|
|
}
|
|
|
|
/* dual-access registers controlled by I2C only */
|
|
twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL);
|
|
|
|
/*
|
|
* The main functionality of twl6040 to provide audio on OMAP4+ systems.
|
|
* We can add the ASoC codec child whenever this driver has been loaded.
|
|
* The ASoC codec can work without pdata, pass the platform_data only if
|
|
* it has been provided.
|
|
*/
|
|
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);
|
|
if (pdata && pdata->codec) {
|
|
cell->platform_data = pdata->codec;
|
|
cell->pdata_size = sizeof(*pdata->codec);
|
|
}
|
|
children++;
|
|
|
|
if (twl6040_has_vibra(pdata, 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);
|
|
|
|
if (pdata && pdata->vibra) {
|
|
cell->platform_data = pdata->vibra;
|
|
cell->pdata_size = sizeof(*pdata->vibra);
|
|
}
|
|
children++;
|
|
}
|
|
|
|
/*
|
|
* Enable the GPO driver in the following cases:
|
|
* DT booted kernel or legacy boot with valid gpo platform_data
|
|
*/
|
|
if (!pdata || (pdata && pdata->gpo)) {
|
|
cell = &twl6040->cells[children];
|
|
cell->name = "twl6040-gpo";
|
|
|
|
if (pdata) {
|
|
cell->platform_data = pdata->gpo;
|
|
cell->pdata_size = sizeof(*pdata->gpo);
|
|
}
|
|
children++;
|
|
}
|
|
|
|
ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children,
|
|
NULL, 0, NULL);
|
|
if (ret)
|
|
goto mfd_err;
|
|
|
|
return 0;
|
|
|
|
mfd_err:
|
|
free_irq(twl6040->irq_th, twl6040);
|
|
thirq_err:
|
|
free_irq(twl6040->irq_ready, twl6040);
|
|
readyirq_err:
|
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data);
|
|
irq_init_err:
|
|
if (gpio_is_valid(twl6040->audpwron))
|
|
gpio_free(twl6040->audpwron);
|
|
gpio_err:
|
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
power_err:
|
|
regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
regulator_get_err:
|
|
i2c_set_clientdata(client, NULL);
|
|
err:
|
|
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);
|
|
|
|
if (gpio_is_valid(twl6040->audpwron))
|
|
gpio_free(twl6040->audpwron);
|
|
|
|
free_irq(twl6040->irq_ready, twl6040);
|
|
free_irq(twl6040->irq_th, twl6040);
|
|
regmap_del_irq_chip(twl6040->irq, twl6040->irq_data);
|
|
|
|
mfd_remove_devices(&client->dev);
|
|
i2c_set_clientdata(client, NULL);
|
|
|
|
regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
|
|
regulator_bulk_free(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");
|