Discussion:
[RFCv2 0/8] [media] si4713 DT binding
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Sebastian Reichel
2014-10-21 15:06:59 UTC
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Raw Message
Hi,

This is the RFCv2 patchset adding DT support to the si4713
radio transmitter i2c driver. The changes can be summarized
as follows:

* Move regulator information back into the driver. The
regulators needed are documented in the chip and have
nothing to do with boarddata. Instead devm_regulator_get_optional
is used and errors are handled quite loosely now. Maybe the USB
driver should provide dummy regulators.
* GPIO handling is updated to gpiod consumer interface, resulting
in a driver cleanup and easy DT handling
* The driver is updated to use managed resources wherever possible

So much about the nice stuff. But there is also

* Instantiation of the platform device from the i2c (sub-)device. Since DT
is not supposed to contain linuxisms the device is a simple i2c node
resulting in the i2c probe function being called. Thus registering the main
v4l device must happen from there.

Tested:
* Compilation on torvalds/linux.git:master (based on 52d589a)
* Booting in DT mode
* Some simply driver queries using v4l2-ctl

Not tested:
* The USB driver, since I do not own the USB dongle
* The legacy platform code (only DT boot has been tested).
(The legacy platform code is supposed to removed in the near future anyways)

Changes since RFCv1 (requested by Hans Verkuil):
- splitted the patchset into more patches
- replaced dev_info with dev_dbg for missing regulators
- check for ENOSYS value from devm_gpiod_get (disabled GPIOLIB)

-- Sebastian

Sebastian Reichel (8):
[media] si4713: switch to devm regulator API
[media] si4713: switch reset gpio to devm_gpiod API
[media] si4713: use managed memory allocation
[media] si4713: use managed irq request
[media] si4713: add device tree support
[media] si4713: add DT binding documentation
ARM: OMAP2: RX-51: update si4713 platform data
[media] si4713: cleanup platform data

Documentation/devicetree/bindings/media/si4713.txt | 30 ++++
arch/arm/mach-omap2/board-rx51-peripherals.c | 69 ++++-----
drivers/media/radio/si4713/radio-platform-si4713.c | 28 +---
drivers/media/radio/si4713/si4713.c | 167 +++++++++++++--------
drivers/media/radio/si4713/si4713.h | 15 +-
include/media/radio-si4713.h | 30 ----
include/media/si4713.h | 4 +-
7 files changed, 186 insertions(+), 157 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/si4713.txt
delete mode 100644 include/media/radio-si4713.h
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:00 UTC
Permalink
Raw Message
This switches back to the normal regulator API (but use
managed variant) in preparation for device tree support.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
drivers/media/radio/si4713/si4713.c | 80 ++++++++++++++++++++++++++-----------
drivers/media/radio/si4713/si4713.h | 6 +--
2 files changed, 58 insertions(+), 28 deletions(-)

diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index b576555..b335093 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -23,6 +23,7 @@

#include <linux/completion.h>
#include <linux/delay.h>
+#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
@@ -366,13 +367,22 @@ static int si4713_powerup(struct si4713_device *sdev)
if (sdev->power_state)
return 0;

- if (sdev->supplies) {
- err = regulator_bulk_enable(sdev->supplies, sdev->supply_data);
+ if (sdev->vdd) {
+ err = regulator_enable(sdev->vdd);
if (err) {
- v4l2_err(&sdev->sd, "Failed to enable supplies: %d\n", err);
+ v4l2_err(&sdev->sd, "Failed to enable vdd: %d\n", err);
return err;
}
}
+
+ if (sdev->vio) {
+ err = regulator_enable(sdev->vio);
+ if (err) {
+ v4l2_err(&sdev->sd, "Failed to enable vio: %d\n", err);
+ return err;
+ }
+ }
+
if (gpio_is_valid(sdev->gpio_reset)) {
udelay(50);
gpio_set_value(sdev->gpio_reset, 1);
@@ -399,11 +409,18 @@ static int si4713_powerup(struct si4713_device *sdev)
}
if (gpio_is_valid(sdev->gpio_reset))
gpio_set_value(sdev->gpio_reset, 0);
- if (sdev->supplies) {
- err = regulator_bulk_disable(sdev->supplies, sdev->supply_data);
+
+
+ if (sdev->vdd) {
+ err = regulator_disable(sdev->vdd);
if (err)
- v4l2_err(&sdev->sd,
- "Failed to disable supplies: %d\n", err);
+ v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n", err);
+ }
+
+ if (sdev->vio) {
+ err = regulator_disable(sdev->vio);
+ if (err)
+ v4l2_err(&sdev->sd, "Failed to disable vio: %d\n", err);
}

return err;
@@ -432,12 +449,21 @@ static int si4713_powerdown(struct si4713_device *sdev)
v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
if (gpio_is_valid(sdev->gpio_reset))
gpio_set_value(sdev->gpio_reset, 0);
- if (sdev->supplies) {
- err = regulator_bulk_disable(sdev->supplies,
- sdev->supply_data);
- if (err)
+
+ if (sdev->vdd) {
+ err = regulator_disable(sdev->vdd);
+ if (err) {
+ v4l2_err(&sdev->sd,
+ "Failed to disable vdd: %d\n", err);
+ }
+ }
+
+ if (sdev->vio) {
+ err = regulator_disable(sdev->vio);
+ if (err) {
v4l2_err(&sdev->sd,
- "Failed to disable supplies: %d\n", err);
+ "Failed to disable vio: %d\n", err);
+ }
}
sdev->power_state = POWER_OFF;
}
@@ -1441,17 +1467,26 @@ static int si4713_probe(struct i2c_client *client,
}
sdev->gpio_reset = pdata->gpio_reset;
gpio_direction_output(sdev->gpio_reset, 0);
- sdev->supplies = pdata->supplies;
}

- for (i = 0; i < sdev->supplies; i++)
- sdev->supply_data[i].supply = pdata->supply_names[i];
+ sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd");
+ if (IS_ERR(sdev->vdd)) {
+ rval = PTR_ERR(sdev->vdd);
+ if (rval == -EPROBE_DEFER)
+ goto exit;
+
+ dev_dbg(&client->dev, "no vdd regulator found: %d\n", rval);
+ sdev->vdd = NULL;
+ }
+
+ sdev->vio = devm_regulator_get_optional(&client->dev, "vio");
+ if (IS_ERR(sdev->vio)) {
+ rval = PTR_ERR(sdev->vio);
+ if (rval == -EPROBE_DEFER)
+ goto exit;

- rval = regulator_bulk_get(&client->dev, sdev->supplies,
- sdev->supply_data);
- if (rval) {
- dev_err(&client->dev, "Cannot get regulators: %d\n", rval);
- goto free_gpio;
+ dev_dbg(&client->dev, "no vio regulator found: %d\n", rval);
+ sdev->vio = NULL;
}

v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops);
@@ -1559,7 +1594,7 @@ static int si4713_probe(struct i2c_client *client,
client->name, sdev);
if (rval < 0) {
v4l2_err(&sdev->sd, "Could not request IRQ\n");
- goto put_reg;
+ goto free_ctrls;
}
v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n");
} else {
@@ -1579,8 +1614,6 @@ free_irq:
free_irq(client->irq, sdev);
free_ctrls:
v4l2_ctrl_handler_free(hdl);
-put_reg:
- regulator_bulk_free(sdev->supplies, sdev->supply_data);
free_gpio:
if (gpio_is_valid(sdev->gpio_reset))
gpio_free(sdev->gpio_reset);
@@ -1604,7 +1637,6 @@ static int si4713_remove(struct i2c_client *client)

v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
- regulator_bulk_free(sdev->supplies, sdev->supply_data);
if (gpio_is_valid(sdev->gpio_reset))
gpio_free(sdev->gpio_reset);
kfree(sdev);
diff --git a/drivers/media/radio/si4713/si4713.h b/drivers/media/radio/si4713/si4713.h
index ed700e3..ed28ed2 100644
--- a/drivers/media/radio/si4713/si4713.h
+++ b/drivers/media/radio/si4713/si4713.h
@@ -190,8 +190,6 @@
#define MIN_ACOMP_THRESHOLD (-40)
#define MAX_ACOMP_GAIN 20

-#define SI4713_NUM_SUPPLIES 2
-
/*
* si4713_device - private data
*/
@@ -236,8 +234,8 @@ struct si4713_device {
struct v4l2_ctrl *tune_ant_cap;
};
struct completion work;
- unsigned supplies;
- struct regulator_bulk_data supply_data[SI4713_NUM_SUPPLIES];
+ struct regulator *vdd;
+ struct regulator *vio;
int gpio_reset;
u32 power_state;
u32 rds_enabled;
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:01 UTC
Permalink
Raw Message
This updates the driver to use the managed gpiod interface
instead of the unmanged old GPIO API. This is a preperation
for the introduction of device tree support.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
drivers/media/radio/si4713/si4713.c | 38 +++++++++++++++++--------------------
drivers/media/radio/si4713/si4713.h | 3 ++-
2 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index b335093..e560a7e 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -383,9 +383,9 @@ static int si4713_powerup(struct si4713_device *sdev)
}
}

- if (gpio_is_valid(sdev->gpio_reset)) {
+ if (!IS_ERR(sdev->gpio_reset)) {
udelay(50);
- gpio_set_value(sdev->gpio_reset, 1);
+ gpiod_set_value(sdev->gpio_reset, 1);
}

if (client->irq)
@@ -407,8 +407,8 @@ static int si4713_powerup(struct si4713_device *sdev)
SI4713_STC_INT | SI4713_CTS);
return err;
}
- if (gpio_is_valid(sdev->gpio_reset))
- gpio_set_value(sdev->gpio_reset, 0);
+ if (!IS_ERR(sdev->gpio_reset))
+ gpiod_set_value(sdev->gpio_reset, 0);


if (sdev->vdd) {
@@ -447,8 +447,8 @@ static int si4713_powerdown(struct si4713_device *sdev)
v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n",
resp[0]);
v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
- if (gpio_is_valid(sdev->gpio_reset))
- gpio_set_value(sdev->gpio_reset, 0);
+ if (!IS_ERR(sdev->gpio_reset))
+ gpiod_set_value(sdev->gpio_reset, 0);

if (sdev->vdd) {
err = regulator_disable(sdev->vdd);
@@ -1457,16 +1457,17 @@ static int si4713_probe(struct i2c_client *client,
goto exit;
}

- sdev->gpio_reset = -1;
- if (pdata && gpio_is_valid(pdata->gpio_reset)) {
- rval = gpio_request(pdata->gpio_reset, "si4713 reset");
- if (rval) {
- dev_err(&client->dev,
- "Failed to request gpio: %d\n", rval);
- goto free_sdev;
- }
- sdev->gpio_reset = pdata->gpio_reset;
- gpio_direction_output(sdev->gpio_reset, 0);
+ sdev->gpio_reset = devm_gpiod_get(&client->dev, "reset");
+ if (!IS_ERR(sdev->gpio_reset)) {
+ gpiod_direction_output(sdev->gpio_reset, 0);
+ } else if (PTR_ERR(sdev->gpio_reset) == -ENOENT) {
+ dev_dbg(&client->dev, "No reset GPIO assigned\n");
+ } else if (PTR_ERR(sdev->gpio_reset) == -ENOSYS) {
+ dev_dbg(&client->dev, "No reset GPIO support\n");
+ } else {
+ rval = PTR_ERR(sdev->gpio_reset);
+ dev_err(&client->dev, "Failed to request gpio: %d\n", rval);
+ goto free_sdev;
}

sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd");
@@ -1614,9 +1615,6 @@ free_irq:
free_irq(client->irq, sdev);
free_ctrls:
v4l2_ctrl_handler_free(hdl);
-free_gpio:
- if (gpio_is_valid(sdev->gpio_reset))
- gpio_free(sdev->gpio_reset);
free_sdev:
kfree(sdev);
exit:
@@ -1637,8 +1635,6 @@ static int si4713_remove(struct i2c_client *client)

v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
- if (gpio_is_valid(sdev->gpio_reset))
- gpio_free(sdev->gpio_reset);
kfree(sdev);

return 0;
diff --git a/drivers/media/radio/si4713/si4713.h b/drivers/media/radio/si4713/si4713.h
index ed28ed2..7c2479f 100644
--- a/drivers/media/radio/si4713/si4713.h
+++ b/drivers/media/radio/si4713/si4713.h
@@ -16,6 +16,7 @@
#define SI4713_I2C_H

#include <linux/regulator/consumer.h>
+#include <linux/gpio/consumer.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-ctrls.h>
#include <media/si4713.h>
@@ -236,7 +237,7 @@ struct si4713_device {
struct completion work;
struct regulator *vdd;
struct regulator *vio;
- int gpio_reset;
+ struct gpio_desc *gpio_reset;
u32 power_state;
u32 rds_enabled;
u32 frequency;
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:04 UTC
Permalink
Raw Message
Add device tree support by changing the device registration order.
In the device tree the si4713 node is a normal I2C device, which
will be probed as such. Thus the V4L device must be probed from
the I2C device and not the other way around.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
drivers/media/radio/si4713/radio-platform-si4713.c | 28 ++++--------------
drivers/media/radio/si4713/si4713.c | 34 ++++++++++++++++++++--
drivers/media/radio/si4713/si4713.h | 6 ++++
include/media/radio-si4713.h | 30 -------------------
include/media/si4713.h | 1 +
5 files changed, 45 insertions(+), 54 deletions(-)
delete mode 100644 include/media/radio-si4713.h

diff --git a/drivers/media/radio/si4713/radio-platform-si4713.c b/drivers/media/radio/si4713/radio-platform-si4713.c
index a47502a..2de5439 100644
--- a/drivers/media/radio/si4713/radio-platform-si4713.c
+++ b/drivers/media/radio/si4713/radio-platform-si4713.c
@@ -34,7 +34,7 @@
#include <media/v4l2-fh.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
-#include <media/radio-si4713.h>
+#include "si4713.h"

/* module parameters */
static int radio_nr = -1; /* radio device minor (-1 ==> auto assign) */
@@ -153,7 +153,6 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
{
struct radio_si4713_platform_data *pdata = pdev->dev.platform_data;
struct radio_si4713_device *rsdev;
- struct i2c_adapter *adapter;
struct v4l2_subdev *sd;
int rval = 0;

@@ -177,20 +176,11 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
goto exit;
}

- adapter = i2c_get_adapter(pdata->i2c_bus);
- if (!adapter) {
- dev_err(&pdev->dev, "Cannot get i2c adapter %d\n",
- pdata->i2c_bus);
- rval = -ENODEV;
- goto unregister_v4l2_dev;
- }
-
- sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter,
- pdata->subdev_board_info, NULL);
- if (!sd) {
+ sd = i2c_get_clientdata(pdata->subdev);
+ rval = v4l2_device_register_subdev(&rsdev->v4l2_dev, sd);
+ if (rval) {
dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n");
- rval = -ENODEV;
- goto put_adapter;
+ goto unregister_v4l2_dev;
}

rsdev->radio_dev = radio_si4713_vdev_template;
@@ -202,14 +192,12 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev)
if (video_register_device(&rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) {
dev_err(&pdev->dev, "Could not register video device.\n");
rval = -EIO;
- goto put_adapter;
+ goto unregister_v4l2_dev;
}
dev_info(&pdev->dev, "New device successfully probed\n");

goto exit;

-put_adapter:
- i2c_put_adapter(adapter);
unregister_v4l2_dev:
v4l2_device_unregister(&rsdev->v4l2_dev);
exit:
@@ -220,14 +208,10 @@ exit:
static int radio_si4713_pdriver_remove(struct platform_device *pdev)
{
struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
- struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next,
- struct v4l2_subdev, list);
- struct i2c_client *client = v4l2_get_subdevdata(sd);
struct radio_si4713_device *rsdev;

rsdev = container_of(v4l2_dev, struct radio_si4713_device, v4l2_dev);
video_unregister_device(&rsdev->radio_dev);
- i2c_put_adapter(client->adapter);
v4l2_device_unregister(&rsdev->v4l2_dev);

return 0;
diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index ebec16d..94fe3c6 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -1446,9 +1446,13 @@ static int si4713_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct si4713_device *sdev;
- struct si4713_platform_data *pdata = client->dev.platform_data;
struct v4l2_ctrl_handler *hdl;
- int rval, i;
+ struct si4713_platform_data *pdata = client->dev.platform_data;
+ struct device_node *np = client->dev.of_node;
+ int rval;
+
+ struct radio_si4713_platform_data si4713_pdev_pdata;
+ struct platform_device *si4713_pdev;

sdev = devm_kzalloc(&client->dev, sizeof(*sdev), GFP_KERNEL);
if (!sdev) {
@@ -1608,8 +1612,31 @@ static int si4713_probe(struct i2c_client *client,
goto free_ctrls;
}

+ if ((pdata && pdata->is_platform_device) || np) {
+ si4713_pdev = platform_device_alloc("radio-si4713", -1);
+ if (!si4713_pdev)
+ goto put_main_pdev;
+
+ si4713_pdev_pdata.subdev = client;
+ rval = platform_device_add_data(si4713_pdev, &si4713_pdev_pdata,
+ sizeof(si4713_pdev_pdata));
+ if (rval)
+ goto put_main_pdev;
+
+ rval = platform_device_add(si4713_pdev);
+ if (rval)
+ goto put_main_pdev;
+
+ sdev->pd = si4713_pdev;
+ } else {
+ sdev->pd = NULL;
+ }
+
return 0;

+put_main_pdev:
+ platform_device_put(si4713_pdev);
+ v4l2_device_unregister_subdev(&sdev->sd);
free_ctrls:
v4l2_ctrl_handler_free(hdl);
exit:
@@ -1622,6 +1649,9 @@ static int si4713_remove(struct i2c_client *client)
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct si4713_device *sdev = to_si4713_device(sd);

+ if (sdev->pd)
+ platform_device_unregister(sdev->pd);
+
if (sdev->power_state)
si4713_set_power_state(sdev, POWER_DOWN);

diff --git a/drivers/media/radio/si4713/si4713.h b/drivers/media/radio/si4713/si4713.h
index 7c2479f..8a376e1 100644
--- a/drivers/media/radio/si4713/si4713.h
+++ b/drivers/media/radio/si4713/si4713.h
@@ -15,6 +15,7 @@
#ifndef SI4713_I2C_H
#define SI4713_I2C_H

+#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio/consumer.h>
#include <media/v4l2-subdev.h>
@@ -238,6 +239,7 @@ struct si4713_device {
struct regulator *vdd;
struct regulator *vio;
struct gpio_desc *gpio_reset;
+ struct platform_device *pd;
u32 power_state;
u32 rds_enabled;
u32 frequency;
@@ -245,4 +247,8 @@ struct si4713_device {
u32 stereo;
u32 tune_rnl;
};
+
+struct radio_si4713_platform_data {
+ struct i2c_client *subdev;
+};
#endif /* ifndef SI4713_I2C_H */
diff --git a/include/media/radio-si4713.h b/include/media/radio-si4713.h
deleted file mode 100644
index f6aae29..0000000
--- a/include/media/radio-si4713.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * include/media/radio-si4713.h
- *
- * Board related data definitions for Si4713 radio transmitter chip.
- *
- * Copyright (c) 2009 Nokia Corporation
- * Contact: Eduardo Valentin <***@nokia.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
- */
-
-#ifndef RADIO_SI4713_H
-#define RADIO_SI4713_H
-
-#include <linux/i2c.h>
-
-#define SI4713_NAME "radio-si4713"
-
-/*
- * Platform dependent definition
- */
-struct radio_si4713_platform_data {
- int i2c_bus;
- struct i2c_board_info *subdev_board_info;
-};
-
-#endif /* ifndef RADIO_SI4713_H*/
diff --git a/include/media/si4713.h b/include/media/si4713.h
index f98a0a7..343b8fb5 100644
--- a/include/media/si4713.h
+++ b/include/media/si4713.h
@@ -26,6 +26,7 @@ struct si4713_platform_data {
const char * const *supply_names;
unsigned supplies;
int gpio_reset; /* < 0 if not used */
+ bool is_platform_device;
};

/*
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:05 UTC
Permalink
Raw Message
This patch adds the DT bindings documentation for Silicon Labs Si4713 FM
radio transmitter.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
Documentation/devicetree/bindings/media/si4713.txt | 30 ++++++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/si4713.txt

diff --git a/Documentation/devicetree/bindings/media/si4713.txt b/Documentation/devicetree/bindings/media/si4713.txt
new file mode 100644
index 0000000..5ee5552
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/si4713.txt
@@ -0,0 +1,30 @@
+* Silicon Labs FM Radio transmitter
+
+The Silicon Labs Si4713 is an FM radio transmitter with receive power scan
+supporting 76-108 MHz. It includes an RDS encoder and has both, a stereo-analog
+and a digital interface, which supports I2S, left-justified and a custom
+DSP-mode format. It is programmable through an I2C interface.
+
+Required Properties:
+- compatible: Should contain "silabs,si4713"
+- reg: the I2C address of the device
+
+Optional Properties:
+- interrupts-extended: Interrupt specifier for the chips interrupt
+- reset-gpios: GPIO specifier for the chips reset line
+- vdd-supply: phandle for Vdd regulator
+- vio-supply: phandle for Vio regulator
+
+Example:
+
+&i2c2 {
+ fmtx: ***@63 {
+ compatible = "silabs,si4713";
+ reg = <0x63>;
+
+ interrupts-extended = <&gpio2 21 IRQ_TYPE_EDGE_FALLING>; /* 53 */
+ reset-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>; /* 163 */
+ vio-supply = <&vio>;
+ vdd-supply = <&vaux1>;
+ };
+};
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:06 UTC
Permalink
Raw Message
This updates platform data related to Si4713, which
has been updated to be compatible with DT interface.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
arch/arm/mach-omap2/board-rx51-peripherals.c | 69 +++++++++++++---------------
1 file changed, 31 insertions(+), 38 deletions(-)

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index ddfc8df..ec2e410 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -23,6 +23,7 @@
#include <linux/regulator/machine.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
+#include <linux/gpio/machine.h>
#include <linux/mmc/host.h>
#include <linux/power/isp1704_charger.h>
#include <linux/platform_data/spi-omap2-mcspi.h>
@@ -38,7 +39,6 @@

#include <sound/tlv320aic3x.h>
#include <sound/tpa6130a2-plat.h>
-#include <media/radio-si4713.h>
#include <media/si4713.h>
#include <linux/platform_data/leds-lp55xx.h>

@@ -760,46 +760,17 @@ static struct regulator_init_data rx51_vintdig = {
},
};

-static const char * const si4713_supply_names[] = {
- "vio",
- "vdd",
-};
-
-static struct si4713_platform_data rx51_si4713_i2c_data __initdata_or_module = {
- .supplies = ARRAY_SIZE(si4713_supply_names),
- .supply_names = si4713_supply_names,
- .gpio_reset = RX51_FMTX_RESET_GPIO,
-};
-
-static struct i2c_board_info rx51_si4713_board_info __initdata_or_module = {
- I2C_BOARD_INFO("si4713", SI4713_I2C_ADDR_BUSEN_HIGH),
- .platform_data = &rx51_si4713_i2c_data,
-};
-
-static struct radio_si4713_platform_data rx51_si4713_data __initdata_or_module = {
- .i2c_bus = 2,
- .subdev_board_info = &rx51_si4713_board_info,
-};
-
-static struct platform_device rx51_si4713_dev __initdata_or_module = {
- .name = "radio-si4713",
- .id = -1,
- .dev = {
- .platform_data = &rx51_si4713_data,
+static struct gpiod_lookup_table rx51_fmtx_gpios_table = {
+ .dev_id = "2-0063",
+ .table = {
+ GPIO_LOOKUP("gpio.6", 3, "reset", GPIO_ACTIVE_HIGH), /* 163 */
+ { },
},
};

-static __init void rx51_init_si4713(void)
+static __init void rx51_gpio_init(void)
{
- int err;
-
- err = gpio_request_one(RX51_FMTX_IRQ, GPIOF_DIR_IN, "si4713 irq");
- if (err) {
- printk(KERN_ERR "Cannot request si4713 irq gpio. %d\n", err);
- return;
- }
- rx51_si4713_board_info.irq = gpio_to_irq(RX51_FMTX_IRQ);
- platform_device_register(&rx51_si4713_dev);
+ gpiod_add_lookup_table(&rx51_fmtx_gpios_table);
}

static int rx51_twlgpio_setup(struct device *dev, unsigned gpio, unsigned n)
@@ -1029,7 +1000,17 @@ static struct aic3x_pdata rx51_aic3x_data2 = {
.gpio_reset = 60,
};

+static struct si4713_platform_data rx51_si4713_platform_data = {
+ .is_platform_device = true
+};
+
static struct i2c_board_info __initdata rx51_peripherals_i2c_board_info_2[] = {
+#if IS_ENABLED(CONFIG_I2C_SI4713) && IS_ENABLED(CONFIG_PLATFORM_SI4713)
+ {
+ I2C_BOARD_INFO("si4713", 0x63),
+ .platform_data = &rx51_si4713_platform_data,
+ },
+#endif
{
I2C_BOARD_INFO("tlv320aic3x", 0x18),
.platform_data = &rx51_aic3x_data,
@@ -1070,6 +1051,10 @@ static struct i2c_board_info __initdata rx51_peripherals_i2c_board_info_3[] = {

static int __init rx51_i2c_init(void)
{
+#if IS_ENABLED(CONFIG_I2C_SI4713) && IS_ENABLED(CONFIG_PLATFORM_SI4713)
+ int err;
+#endif
+
if ((system_rev >= SYSTEM_REV_S_USES_VAUX3 && system_rev < 0x100) ||
system_rev >= SYSTEM_REV_B_USES_VAUX3) {
rx51_twldata.vaux3 = &rx51_vaux3_mmc;
@@ -1087,6 +1072,14 @@ static int __init rx51_i2c_init(void)
rx51_twldata.vdac->constraints.name = "VDAC";

omap_pmic_init(1, 2200, "twl5030", 7 + OMAP_INTC_START, &rx51_twldata);
+#if IS_ENABLED(CONFIG_I2C_SI4713) && IS_ENABLED(CONFIG_PLATFORM_SI4713)
+ err = gpio_request_one(RX51_FMTX_IRQ, GPIOF_DIR_IN, "si4713 irq");
+ if (err) {
+ printk(KERN_ERR "Cannot request si4713 irq gpio. %d\n", err);
+ return err;
+ }
+ rx51_peripherals_i2c_board_info_2[0].irq = gpio_to_irq(RX51_FMTX_IRQ);
+#endif
omap_register_i2c_bus(2, 100, rx51_peripherals_i2c_board_info_2,
ARRAY_SIZE(rx51_peripherals_i2c_board_info_2));
#if defined(CONFIG_SENSORS_LIS3_I2C) || defined(CONFIG_SENSORS_LIS3_I2C_MODULE)
@@ -1300,6 +1293,7 @@ static void __init rx51_init_omap3_rom_rng(void)

void __init rx51_peripherals_init(void)
{
+ rx51_gpio_init();
rx51_i2c_init();
regulator_has_full_constraints();
gpmc_onenand_init(board_onenand_data);
@@ -1307,7 +1301,6 @@ void __init rx51_peripherals_init(void)
rx51_add_gpio_keys();
rx51_init_wl1251();
rx51_init_tsc2005();
- rx51_init_si4713();
rx51_init_lirc();
spi_register_board_info(rx51_peripherals_spi_board_info,
ARRAY_SIZE(rx51_peripherals_spi_board_info));
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:07 UTC
Permalink
Raw Message
Remove unreferenced members from the platform
data's structure.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
include/media/si4713.h | 3 ---
1 file changed, 3 deletions(-)

diff --git a/include/media/si4713.h b/include/media/si4713.h
index 343b8fb5..be4f58e 100644
--- a/include/media/si4713.h
+++ b/include/media/si4713.h
@@ -23,9 +23,6 @@
* Platform dependent definition
*/
struct si4713_platform_data {
- const char * const *supply_names;
- unsigned supplies;
- int gpio_reset; /* < 0 if not used */
bool is_platform_device;
};
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:02 UTC
Permalink
Raw Message
Introduce the usage of managed memory allocation to
simplify the code slightly.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
drivers/media/radio/si4713/si4713.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index e560a7e..efc5d6b 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -1450,7 +1450,7 @@ static int si4713_probe(struct i2c_client *client,
struct v4l2_ctrl_handler *hdl;
int rval, i;

- sdev = kzalloc(sizeof(*sdev), GFP_KERNEL);
+ sdev = devm_kzalloc(&client->dev, sizeof(*sdev), GFP_KERNEL);
if (!sdev) {
dev_err(&client->dev, "Failed to alloc video device.\n");
rval = -ENOMEM;
@@ -1467,7 +1467,7 @@ static int si4713_probe(struct i2c_client *client,
} else {
rval = PTR_ERR(sdev->gpio_reset);
dev_err(&client->dev, "Failed to request gpio: %d\n", rval);
- goto free_sdev;
+ goto exit;
}

sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd");
@@ -1615,8 +1615,6 @@ free_irq:
free_irq(client->irq, sdev);
free_ctrls:
v4l2_ctrl_handler_free(hdl);
-free_sdev:
- kfree(sdev);
exit:
return rval;
}
@@ -1635,7 +1633,6 @@ static int si4713_remove(struct i2c_client *client)

v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
- kfree(sdev);

return 0;
}
--
2.1.1
Sebastian Reichel
2014-10-21 15:07:03 UTC
Permalink
Raw Message
Introduce the usage of managed irq request to
simplify the code slightly.

Signed-off-by: Sebastian Reichel <***@kernel.org>
---
drivers/media/radio/si4713/si4713.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index efc5d6b..ebec16d 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -1590,7 +1590,7 @@ static int si4713_probe(struct i2c_client *client,
sdev->sd.ctrl_handler = hdl;

if (client->irq) {
- rval = request_irq(client->irq,
+ rval = devm_request_irq(&client->dev, client->irq,
si4713_handler, IRQF_TRIGGER_FALLING,
client->name, sdev);
if (rval < 0) {
@@ -1605,14 +1605,11 @@ static int si4713_probe(struct i2c_client *client,
rval = si4713_initialize(sdev);
if (rval < 0) {
v4l2_err(&sdev->sd, "Failed to probe device information.\n");
- goto free_irq;
+ goto free_ctrls;
}

return 0;

-free_irq:
- if (client->irq)
- free_irq(client->irq, sdev);
free_ctrls:
v4l2_ctrl_handler_free(hdl);
exit:
@@ -1628,9 +1625,6 @@ static int si4713_remove(struct i2c_client *client)
if (sdev->power_state)
si4713_set_power_state(sdev, POWER_DOWN);

- if (client->irq > 0)
- free_irq(client->irq, sdev);
-
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
--
2.1.1

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