linux/drivers/mfd/twl6040.c
Linus Torvalds abebcdfb64 sound updates for 4.3-rc1
There are little changes in core part, but lots of development are
 found in drivers, especially ASoC.  The diffstat shows regmap-
 related changes for a slight API additions / changes, and that's all.
 
 Looking at the code size statistics, the most significant addition
 is for Intel Skylake.  (Note that SKL support is still underway, the
 codec driver is missing.)  Also STI controller driver is a major
 addition as well as a few new codec drivers.
 
 In HD-audio side, there are fewer changes than the past.  The
 noticeable change is the support of ELD notification from i915
 graphics driver.  Thus this pull request carries a few changes in
 drm/i915.
 
 Other than that, USB-audio got a rewrite of runtime PM code.  It
 was initiated by lockdep warning, but resulted in a good cleanup in
 the end.
 
 Below are the highlights:
 
 Common:
 - Factoring out of AC'97 reset code from ASoC into the core helper
 - A few regmap API extensions (in case it's not pulled yet)
 
 ASoC:
 - New drivers for Cirrus CS4349, GTM601, InvenSense ICS43432, Realtek
   RT298 and ST STI controllers
 - Machine drivers for Rockchip systems with MAX98090 and RT5645 and
   RT5650
 - Initial driver support for Intel Skylake devices
 - Lots of rsnd cleanup and enhancements
 - A few DAPM fixes and cleanups
 - A large number of cleanups in various drivers (conversion and
   standardized to regmap, component) mostly by Lars-Peter and Axel
 
 HD-audio:
 - Extended HD-audio core for Intel Skylake controller support
 - Quirks for Dell headsets, Alienware 15
 - Clean up of pin-based quirk tables for Realtek codecs
 - ELD notifier implenetation for Intel HDMI/DP
 
 USB-audio:
 - Refactor runtime PM code to make lockdep happier
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Merge tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There are little changes in core part, but lots of development are
  found in drivers, especially ASoC.  The diffstat shows regmap-related
  changes for a slight API additions / changes, and that's all.

  Looking at the code size statistics, the most significant addition is
  for Intel Skylake.  (Note that SKL support is still underway, the
  codec driver is missing.) Also STI controller driver is a major
  addition as well as a few new codec drivers.

  In HD-audio side, there are fewer changes than the past.  The
  noticeable change is the support of ELD notification from i915
  graphics driver.  Thus this pull request carries a few changes in
  drm/i915.

  Other than that, USB-audio got a rewrite of runtime PM code.  It was
  initiated by lockdep warning, but resulted in a good cleanup in the
  end.

  Below are the highlights:

  Common:
   - Factoring out of AC'97 reset code from ASoC into the core helper
   - A few regmap API extensions (in case it's not pulled yet)

  ASoC:
   - New drivers for Cirrus CS4349, GTM601, InvenSense ICS43432, Realtek
     RT298 and ST STI controllers
   - Machine drivers for Rockchip systems with MAX98090 and RT5645 and
     RT5650
   - Initial driver support for Intel Skylake devices
   - Lots of rsnd cleanup and enhancements
   - A few DAPM fixes and cleanups
   - A large number of cleanups in various drivers (conversion and
     standardized to regmap, component) mostly by Lars-Peter and Axel

  HD-audio:
   - Extended HD-audio core for Intel Skylake controller support
   - Quirks for Dell headsets, Alienware 15
   - Clean up of pin-based quirk tables for Realtek codecs
   - ELD notifier implenetation for Intel HDMI/DP

  USB-audio:
   - Refactor runtime PM code to make lockdep happier"

* tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (411 commits)
  drm/i915: Add locks around audio component bind/unbind
  drm/i915: Drop port_mst_index parameter from pin/eld callback
  ALSA: hda - Fix missing inline for dummy snd_hdac_set_codec_wakeup()
  ALSA: hda - Wake the codec up on pin/ELD notify events
  ALSA: hda - allow codecs to access the i915 pin/ELD callback
  drm/i915: Call audio pin/ELD notify function
  drm/i915: Add audio pin sense / ELD callback
  ASoC: zx296702-i2s: Fix resource leak when unload module
  ASoC: sti_uniperif: Ensure component is unregistered when unload module
  ASoC: au1x: psc-i2s: Convert to use devm_ioremap_resource
  ASoC: sh: dma-sh7760: Convert to devm_snd_soc_register_platform
  ASoC: spear_pcm: Use devm_snd_dmaengine_pcm_register to fix resource leak
  ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure
  ASoC: Clean up docbook warnings
  ASoC: txx9: Convert to devm_snd_soc_register_platform
  ASoC: pxa: Convert to devm_snd_soc_register_platform
  ASoC: nuc900: Convert to devm_snd_soc_register_platform
  ASoC: blackfin: Convert to devm_snd_soc_register_platform
  ASoC: au1x: Convert to devm_snd_soc_register_platform
  ASoC: qcom: Constify asoc_qcom_lpass_cpu_dai_ops
  ...
2015-09-04 11:46:02 -07:00

816 lines
20 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 const 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_sequence 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 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,
};
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",
},
.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");