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Merge tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next

Browse Source 
Pull MFD update from Samuel Ortiz:
 "For the 3.11 merge we only have one new MFD driver for the Kontron
  PLD.

  But we also have:
   - Support for the TPS659038 PMIC from the palmas driver.
   - Intel's Coleto Creek and Avoton SoCs support from the lpc_ich
     driver.
   - RTL8411B support from the rtsx driver.
   - More DT support for the Arizona, max8998, twl4030-power and the
     ti_am335x_tsadc drivers.
   - The SSBI driver move under MFD.
   - A conversion to the devm_* API for most of the MFD drivers.
   - The twl4030-power got split from twl-core into its own module.
   - A major ti_am335x_adc cleanup, leading to a proper DT support.
   - Our regular arizona and wm* updates and cleanups from the Wolfson
     folks.
   - A better error handling and initialization, and a regulator
     subdevice addition for the 88pm80x driver.
   - A bulk platform_set_drvdata() call removal that's no longer need
     since commit 0998d06310 ("device-core: Ensure drvdata = NULL when
     no driver is bound")

* tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (102 commits)
  mfd: sec: Provide max_register to regmap
  mfd: wm8994: Remove duplicate check for active JACKDET
  MAINTAINERS: Add include directory to MFD file patterns
  mfd: sec: Remove fields not used since regmap conversion
  watchdog: Kontron PLD watchdog timer driver
  mfd: max8998: Add support for Device Tree
  regulator: max8998: Use arrays for specifying voltages in platform data
  mfd: max8998: Add irq domain support
  regulator: palmas: Add TPS659038 support
  mfd: Kontron PLD mfd driver
  mfd: palmas: Add TPS659038 PMIC support
  mfd: palmas: Add SMPS10_BOOST feature
  mfd: palmas: Check if irq is valid
  mfd: lpc_ich: iTCO_wdt patch for Intel Coleto Creek DeviceIDs
  mfd: twl-core: Change TWL6025 references to TWL6032
  mfd: davinci_voicecodec: Fix build breakage
  mfd: vexpress: Make the driver optional for arm and arm64
  mfd: htc-egpio: Use devm_ioremap_nocache() instead of ioremap_nocache()
  mfd: davinci_voicecodec: Convert to use devm_* APIs
  mfd: twl4030-power: Fix relocking on error
  ...
This commit is contained in:
Linus Torvalds
2013-07-10 11:10:27 -07:00
parent dc5ef1f569 25f311fa58
commit 3aa78e0cb5
97 changed files with 4831 additions and 1013 deletions
Download Patch File Download Diff File Expand all files Collapse all files

288
drivers/input/touchscreen/ti_am335x_tsc.c
View File

@@ -24,8 +24,9 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/input/ti_am335x_tsc.h>
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mfd/ti_am335x_tscadc.h>
@@ -33,6 +34,13 @@
#define SEQ_SETTLE 275
#define MAX_12BIT ((1 << 12) - 1)
static const int config_pins[] = {
STEPCONFIG_XPP,
STEPCONFIG_XNN,
STEPCONFIG_YPP,
STEPCONFIG_YNN,
};
struct titsc {
struct input_dev *input;
struct ti_tscadc_dev *mfd_tscadc;
@@ -40,7 +48,10 @@ struct titsc {
unsigned int wires;
unsigned int x_plate_resistance;
bool pen_down;
int steps_to_configure;
int coordinate_readouts;
u32 config_inp[4];
u32 bit_xp, bit_xn, bit_yp, bit_yn;
u32 inp_xp, inp_xn, inp_yp, inp_yn;
};
static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
@@ -54,92 +65,153 @@ static void titsc_writel(struct titsc *tsc, unsigned int reg,
writel(val, tsc->mfd_tscadc->tscadc_base + reg);
}
static int titsc_config_wires(struct titsc *ts_dev)
{
u32 analog_line[4];
u32 wire_order[4];
int i, bit_cfg;
for (i = 0; i < 4; i++) {
/*
* Get the order in which TSC wires are attached
* w.r.t. each of the analog input lines on the EVM.
*/
analog_line[i] = (ts_dev->config_inp[i] & 0xF0) >> 4;
wire_order[i] = ts_dev->config_inp[i] & 0x0F;
if (WARN_ON(analog_line[i] > 7))
return -EINVAL;
if (WARN_ON(wire_order[i] > ARRAY_SIZE(config_pins)))
return -EINVAL;
}
for (i = 0; i < 4; i++) {
int an_line;
int wi_order;
an_line = analog_line[i];
wi_order = wire_order[i];
bit_cfg = config_pins[wi_order];
if (bit_cfg == 0)
return -EINVAL;
switch (wi_order) {
case 0:
ts_dev->bit_xp = bit_cfg;
ts_dev->inp_xp = an_line;
break;
case 1:
ts_dev->bit_xn = bit_cfg;
ts_dev->inp_xn = an_line;
break;
case 2:
ts_dev->bit_yp = bit_cfg;
ts_dev->inp_yp = an_line;
break;
case 3:
ts_dev->bit_yn = bit_cfg;
ts_dev->inp_yn = an_line;
break;
}
}
return 0;
}
static void titsc_step_config(struct titsc *ts_dev)
{
unsigned int config;
int i, total_steps;
/* Configure the Step registers */
total_steps = 2 * ts_dev->steps_to_configure;
int i;
int end_step;
u32 stepenable;
config = STEPCONFIG_MODE_HWSYNC |
STEPCONFIG_AVG_16 | STEPCONFIG_XPP;
STEPCONFIG_AVG_16 | ts_dev->bit_xp;
switch (ts_dev->wires) {
case 4:
config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN;
config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;
break;
case 5:
config |= STEPCONFIG_YNN |
STEPCONFIG_INP_AN4 | STEPCONFIG_XNN |
STEPCONFIG_YPP;
config |= ts_dev->bit_yn |
STEPCONFIG_INP_AN4 | ts_dev->bit_xn |
ts_dev->bit_yp;
break;
case 8:
config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN;
config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;
break;
}
for (i = 1; i <= ts_dev->steps_to_configure; i++) {
/* 1 … coordinate_readouts is for X */
end_step = ts_dev->coordinate_readouts;
for (i = 0; i < end_step; i++) {
titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
}
config = 0;
config = STEPCONFIG_MODE_HWSYNC |
STEPCONFIG_AVG_16 | STEPCONFIG_YNN |
STEPCONFIG_INM_ADCREFM | STEPCONFIG_FIFO1;
STEPCONFIG_AVG_16 | ts_dev->bit_yn |
STEPCONFIG_INM_ADCREFM;
switch (ts_dev->wires) {
case 4:
config |= STEPCONFIG_YPP;
config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);
break;
case 5:
config |= STEPCONFIG_XPP | STEPCONFIG_INP_AN4 |
STEPCONFIG_XNP | STEPCONFIG_YPN;
config |= ts_dev->bit_xp | STEPCONFIG_INP_AN4 |
ts_dev->bit_xn | ts_dev->bit_yp;
break;
case 8:
config |= STEPCONFIG_YPP;
config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);
break;
}
for (i = (ts_dev->steps_to_configure + 1); i <= total_steps; i++) {
/* coordinate_readouts … coordinate_readouts * 2 is for Y */
end_step = ts_dev->coordinate_readouts * 2;
for (i = ts_dev->coordinate_readouts; i < end_step; i++) {
titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
}
config = 0;
/* Charge step configuration */
config = STEPCONFIG_XPP | STEPCONFIG_YNN |
config = ts_dev->bit_xp | ts_dev->bit_yn |
STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR |
STEPCHARGE_INM_AN1 | STEPCHARGE_INP_AN1;
STEPCHARGE_INM_AN1 | STEPCHARGE_INP(ts_dev->inp_yp);
titsc_writel(ts_dev, REG_CHARGECONFIG, config);
titsc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY);
config = 0;
/* Configure to calculate pressure */
/* coordinate_readouts * 2 … coordinate_readouts * 2 + 2 is for Z */
config = STEPCONFIG_MODE_HWSYNC |
STEPCONFIG_AVG_16 | STEPCONFIG_YPP |
STEPCONFIG_XNN | STEPCONFIG_INM_ADCREFM;
titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 1), config);
titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 1),
STEPCONFIG_AVG_16 | ts_dev->bit_yp |
ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM |
STEPCONFIG_INP(ts_dev->inp_xp);
titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);
titsc_writel(ts_dev, REG_STEPDELAY(end_step),
STEPCONFIG_OPENDLY);
config |= STEPCONFIG_INP_AN3 | STEPCONFIG_FIFO1;
titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 2), config);
titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 2),
end_step++;
config |= STEPCONFIG_INP(ts_dev->inp_yn);
titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);
titsc_writel(ts_dev, REG_STEPDELAY(end_step),
STEPCONFIG_OPENDLY);
titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC);
/* The steps1 … end and bit 0 for TS_Charge */
stepenable = (1 << (end_step + 2)) - 1;
am335x_tsc_se_set(ts_dev->mfd_tscadc, stepenable);
}
static void titsc_read_coordinates(struct titsc *ts_dev,
unsigned int *x, unsigned int *y)
u32 *x, u32 *y, u32 *z1, u32 *z2)
{
unsigned int fifocount = titsc_readl(ts_dev, REG_FIFO0CNT);
unsigned int prev_val_x = ~0, prev_val_y = ~0;
unsigned int prev_diff_x = ~0, prev_diff_y = ~0;
unsigned int read, diff;
unsigned int i, channel;
unsigned int creads = ts_dev->coordinate_readouts;
*z1 = *z2 = 0;
if (fifocount % (creads * 2 + 2))
fifocount -= fifocount % (creads * 2 + 2);
/*
* Delta filter is used to remove large variations in sampled
* values from ADC. The filter tries to predict where the next
@@ -148,32 +220,32 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
* algorithm compares the difference with that of a present value,
* if true the value is reported to the sub system.
*/
for (i = 0; i < fifocount - 1; i++) {
for (i = 0; i < fifocount; i++) {
read = titsc_readl(ts_dev, REG_FIFO0);
channel = read & 0xf0000;
channel = channel >> 0x10;
if ((channel >= 0) && (channel < ts_dev->steps_to_configure)) {
read &= 0xfff;
channel = (read & 0xf0000) >> 16;
read &= 0xfff;
if (channel < creads) {
diff = abs(read - prev_val_x);
if (diff < prev_diff_x) {
prev_diff_x = diff;
*x = read;
}
prev_val_x = read;
}
read = titsc_readl(ts_dev, REG_FIFO1);
channel = read & 0xf0000;
channel = channel >> 0x10;
if ((channel >= ts_dev->steps_to_configure) &&
(channel < (2 * ts_dev->steps_to_configure - 1))) {
read &= 0xfff;
} else if (channel < creads * 2) {
diff = abs(read - prev_val_y);
if (diff < prev_diff_y) {
prev_diff_y = diff;
*y = read;
}
prev_val_y = read;
} else if (channel < creads * 2 + 1) {
*z1 = read;
} else if (channel < creads * 2 + 2) {
*z2 = read;
}
}
}
@@ -186,23 +258,11 @@ static irqreturn_t titsc_irq(int irq, void *dev)
unsigned int x = 0, y = 0;
unsigned int z1, z2, z;
unsigned int fsm;
unsigned int fifo1count, fifo0count;
int i;
status = titsc_readl(ts_dev, REG_IRQSTATUS);
if (status & IRQENB_FIFO0THRES) {
titsc_read_coordinates(ts_dev, &x, &y);
z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff;
z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff;
fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT);
for (i = 0; i < fifo1count; i++)
titsc_readl(ts_dev, REG_FIFO1);
fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT);
for (i = 0; i < fifo0count; i++)
titsc_readl(ts_dev, REG_FIFO0);
titsc_read_coordinates(ts_dev, &x, &y, &z1, &z2);
if (ts_dev->pen_down && z1 != 0 && z2 != 0) {
/*
@@ -210,10 +270,10 @@ static irqreturn_t titsc_irq(int irq, void *dev)
* Resistance(touch) = x plate resistance *
* x postion/4096 * ((z2 / z1) - 1)
*/
z = z2 - z1;
z = z1 - z2;
z *= x;
z *= ts_dev->x_plate_resistance;
z /= z1;
z /= z2;
z = (z + 2047) >> 12;
if (z <= MAX_12BIT) {
@@ -248,10 +308,53 @@ static irqreturn_t titsc_irq(int irq, void *dev)
irqclr |= IRQENB_PENUP;
}
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
if (status & IRQENB_HW_PEN) {
titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC);
return IRQ_HANDLED;
titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);
titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
}
if (irqclr) {
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
am335x_tsc_se_update(ts_dev->mfd_tscadc);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int titsc_parse_dt(struct platform_device *pdev,
struct titsc *ts_dev)
{
struct device_node *node = pdev->dev.of_node;
int err;
if (!node)
return -EINVAL;
err = of_property_read_u32(node, "ti,wires", &ts_dev->wires);
if (err < 0)
return err;
switch (ts_dev->wires) {
case 4:
case 5:
case 8:
break;
default:
return -EINVAL;
}
err = of_property_read_u32(node, "ti,x-plate-resistance",
&ts_dev->x_plate_resistance);
if (err < 0)
return err;
err = of_property_read_u32(node, "ti,coordiante-readouts",
&ts_dev->coordinate_readouts);
if (err < 0)
return err;
return of_property_read_u32_array(node, "ti,wire-config",
ts_dev->config_inp, ARRAY_SIZE(ts_dev->config_inp));
}
/*
@@ -262,17 +365,9 @@ static int titsc_probe(struct platform_device *pdev)
{
struct titsc *ts_dev;
struct input_dev *input_dev;
struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
struct mfd_tscadc_board *pdata;
struct ti_tscadc_dev *tscadc_dev = ti_tscadc_dev_get(pdev);
int err;
pdata = tscadc_dev->dev->platform_data;
if (!pdata) {
dev_err(&pdev->dev, "Could not find platform data\n");
return -EINVAL;
}
/* Allocate memory for device */
ts_dev = kzalloc(sizeof(struct titsc), GFP_KERNEL);
input_dev = input_allocate_device();
@@ -286,9 +381,12 @@ static int titsc_probe(struct platform_device *pdev)
ts_dev->mfd_tscadc = tscadc_dev;
ts_dev->input = input_dev;
ts_dev->irq = tscadc_dev->irq;
ts_dev->wires = pdata->tsc_init->wires;
ts_dev->x_plate_resistance = pdata->tsc_init->x_plate_resistance;
ts_dev->steps_to_configure = pdata->tsc_init->steps_to_configure;
err = titsc_parse_dt(pdev, ts_dev);
if (err) {
dev_err(&pdev->dev, "Could not find valid DT data.\n");
goto err_free_mem;
}
err = request_irq(ts_dev->irq, titsc_irq,
0, pdev->dev.driver->name, ts_dev);
@@ -298,8 +396,14 @@ static int titsc_probe(struct platform_device *pdev)
}
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
err = titsc_config_wires(ts_dev);
if (err) {
dev_err(&pdev->dev, "wrong i/p wire configuration\n");
goto err_free_irq;
}
titsc_step_config(ts_dev);
titsc_writel(ts_dev, REG_FIFO0THR, ts_dev->steps_to_configure);
titsc_writel(ts_dev, REG_FIFO0THR,
ts_dev->coordinate_readouts * 2 + 2 - 1);
input_dev->name = "ti-tsc";
input_dev->dev.parent = &pdev->dev;
@@ -329,11 +433,16 @@ err_free_mem:
static int titsc_remove(struct platform_device *pdev)
{
struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
struct titsc *ts_dev = tscadc_dev->tsc;
struct titsc *ts_dev = platform_get_drvdata(pdev);
u32 steps;
free_irq(ts_dev->irq, ts_dev);
/* total steps followed by the enable mask */
steps = 2 * ts_dev->coordinate_readouts + 2;
steps = (1 << steps) - 1;
am335x_tsc_se_clr(ts_dev->mfd_tscadc, steps);
input_unregister_device(ts_dev->input);
kfree(ts_dev);
@@ -343,10 +452,11 @@ static int titsc_remove(struct platform_device *pdev)
#ifdef CONFIG_PM
static int titsc_suspend(struct device *dev)
{
struct ti_tscadc_dev *tscadc_dev = dev->platform_data;
struct titsc *ts_dev = tscadc_dev->tsc;
struct titsc *ts_dev = dev_get_drvdata(dev);
struct ti_tscadc_dev *tscadc_dev;
unsigned int idle;
tscadc_dev = ti_tscadc_dev_get(to_platform_device(dev));
if (device_may_wakeup(tscadc_dev->dev)) {
idle = titsc_readl(ts_dev, REG_IRQENABLE);
titsc_writel(ts_dev, REG_IRQENABLE,
@@ -358,9 +468,10 @@ static int titsc_suspend(struct device *dev)
static int titsc_resume(struct device *dev)
{
struct ti_tscadc_dev *tscadc_dev = dev->platform_data;
struct titsc *ts_dev = tscadc_dev->tsc;
struct titsc *ts_dev = dev_get_drvdata(dev);
struct ti_tscadc_dev *tscadc_dev;
tscadc_dev = ti_tscadc_dev_get(to_platform_device(dev));
if (device_may_wakeup(tscadc_dev->dev)) {
titsc_writel(ts_dev, REG_IRQWAKEUP,
0x00);
@@ -368,7 +479,7 @@ static int titsc_resume(struct device *dev)
}
titsc_step_config(ts_dev);
titsc_writel(ts_dev, REG_FIFO0THR,
ts_dev->steps_to_configure);
ts_dev->coordinate_readouts * 2 + 2 - 1);
return 0;
}
@@ -381,13 +492,20 @@ static const struct dev_pm_ops titsc_pm_ops = {
#define TITSC_PM_OPS NULL
#endif
static const struct of_device_id ti_tsc_dt_ids[] = {
{ .compatible = "ti,am3359-tsc", },
{ }
};
MODULE_DEVICE_TABLE(of, ti_tsc_dt_ids);
static struct platform_driver ti_tsc_driver = {
.probe = titsc_probe,
.remove = titsc_remove,
.driver = {
.name = "tsc",
.name = "TI-am335x-tsc",
.owner = THIS_MODULE,
.pm = TITSC_PM_OPS,
.of_match_table = of_match_ptr(ti_tsc_dt_ids),
},
};
module_platform_driver(ti_tsc_driver);