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authorJan Weitzel <j.weitzel@phytec.de>2011-05-24 17:13:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 08:39:50 -0700
commit3dbf622c153390dc3b038a23fb2847a4a607a802 (patch)
treefeb1e1d8f0c4758b7221e81f28fe82a65c12929d /drivers/leds
parent3c1ab50d0a31b27bb4e55168f4901dd91e6e5ea4 (diff)
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drivers/leds/leds-pca9532.c: add support pca9530, pca9531 and pca9533
The pca953x family are only different in number of leds and register layout Adding chipinfo to use driver with whole pca953x family Rename driver to pca953x, but left files and platformflags named pca9532. Tested with pca9530 and pca9533 Tested-by: Juergen Kilb <j.kilb@phytec.de> Signed-off-by: Jan Weitzel <j.weitzel@phytec.de> Acked-by: Joachim Eastwood <joachim.eastwood@jotron.com> Tested-by: Joachim Eastwood <joachim.eastwood@jotron.com> Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-pca9532.c84
1 files changed, 62 insertions, 22 deletions
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index ebea856..d8d3a1e 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -1,13 +1,14 @@
/*
* pca9532.c - 16-bit Led dimmer
*
+ * Copyright (C) 2011 Jan Weitzel
* Copyright (C) 2008 Riku Voipio
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
- * Datasheet: http://www.nxp.com/acrobat/datasheets/PCA9532_3.pdf
+ * Datasheet: http://www.nxp.com/documents/data_sheet/PCA9532.pdf
*
*/
@@ -21,15 +22,20 @@
#include <linux/leds-pca9532.h>
#include <linux/gpio.h>
-#define PCA9532_REG_INPUT(i) ((i)/8)
-#define PCA9532_REG_PSC(i) (0x2+(i)*2)
-#define PCA9532_REG_PWM(i) (0x3+(i)*2)
-#define PCA9532_REG_LS0 0x6
-#define LED_REG(led) ((led>>2)+PCA9532_REG_LS0)
-#define LED_NUM(led) (led & 0x3)
+/* m = num_leds*/
+#define PCA9532_REG_INPUT(i) ((i) >> 3)
+#define PCA9532_REG_OFFSET(m) ((m) >> 4)
+#define PCA9532_REG_PSC(m, i) (PCA9532_REG_OFFSET(m) + 0x1 + (i) * 2)
+#define PCA9532_REG_PWM(m, i) (PCA9532_REG_OFFSET(m) + 0x2 + (i) * 2)
+#define LED_REG(m, led) (PCA9532_REG_OFFSET(m) + 0x5 + (led >> 2))
+#define LED_NUM(led) (led & 0x3)
#define ldev_to_led(c) container_of(c, struct pca9532_led, ldev)
+struct pca9532_chip_info {
+ u8 num_leds;
+};
+
struct pca9532_data {
struct i2c_client *client;
struct pca9532_led leds[16];
@@ -39,6 +45,7 @@ struct pca9532_data {
#ifdef CONFIG_LEDS_PCA9532_GPIO
struct gpio_chip gpio;
#endif
+ const struct pca9532_chip_info *chip_info;
u8 pwm[2];
u8 psc[2];
};
@@ -47,16 +54,41 @@ static int pca9532_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int pca9532_remove(struct i2c_client *client);
+enum {
+ pca9530,
+ pca9531,
+ pca9532,
+ pca9533,
+};
+
static const struct i2c_device_id pca9532_id[] = {
- { "pca9532", 0 },
+ { "pca9530", pca9530 },
+ { "pca9531", pca9531 },
+ { "pca9532", pca9532 },
+ { "pca9533", pca9533 },
{ }
};
MODULE_DEVICE_TABLE(i2c, pca9532_id);
+static const struct pca9532_chip_info pca9532_chip_info_tbl[] = {
+ [pca9530] = {
+ .num_leds = 2,
+ },
+ [pca9531] = {
+ .num_leds = 8,
+ },
+ [pca9532] = {
+ .num_leds = 16,
+ },
+ [pca9533] = {
+ .num_leds = 4,
+ },
+};
+
static struct i2c_driver pca9532_driver = {
.driver = {
- .name = "pca9532",
+ .name = "pca953x",
},
.probe = pca9532_probe,
.remove = pca9532_remove,
@@ -73,7 +105,7 @@ static int pca9532_calcpwm(struct i2c_client *client, int pwm, int blink,
{
int a = 0, b = 0, i = 0;
struct pca9532_data *data = i2c_get_clientdata(client);
- for (i = 0; i < 16; i++) {
+ for (i = 0; i < data->chip_info->num_leds; i++) {
if (data->leds[i].type == PCA9532_TYPE_LED &&
data->leds[i].state == PCA9532_PWM0+pwm) {
a++;
@@ -97,10 +129,12 @@ static int pca9532_calcpwm(struct i2c_client *client, int pwm, int blink,
static int pca9532_setpwm(struct i2c_client *client, int pwm)
{
struct pca9532_data *data = i2c_get_clientdata(client);
+ u8 maxleds = data->chip_info->num_leds;
+
mutex_lock(&data->update_lock);
- i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(pwm),
+ i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(maxleds, pwm),
data->pwm[pwm]);
- i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(pwm),
+ i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(maxleds, pwm),
data->psc[pwm]);
mutex_unlock(&data->update_lock);
return 0;
@@ -111,15 +145,16 @@ static void pca9532_setled(struct pca9532_led *led)
{
struct i2c_client *client = led->client;
struct pca9532_data *data = i2c_get_clientdata(client);
+ u8 maxleds = data->chip_info->num_leds;
char reg;
mutex_lock(&data->update_lock);
- reg = i2c_smbus_read_byte_data(client, LED_REG(led->id));
+ reg = i2c_smbus_read_byte_data(client, LED_REG(maxleds, led->id));
/* zero led bits */
reg = reg & ~(0x3<<LED_NUM(led->id)*2);
/* set the new value */
reg = reg | (led->state << LED_NUM(led->id)*2);
- i2c_smbus_write_byte_data(client, LED_REG(led->id), reg);
+ i2c_smbus_write_byte_data(client, LED_REG(maxleds, led->id), reg);
mutex_unlock(&data->update_lock);
}
@@ -188,10 +223,12 @@ static int pca9532_event(struct input_dev *dev, unsigned int type,
static void pca9532_input_work(struct work_struct *work)
{
- struct pca9532_data *data;
- data = container_of(work, struct pca9532_data, work);
+ struct pca9532_data *data =
+ container_of(work, struct pca9532_data, work);
+ u8 maxleds = data->chip_info->num_leds;
+
mutex_lock(&data->update_lock);
- i2c_smbus_write_byte_data(data->client, PCA9532_REG_PWM(1),
+ i2c_smbus_write_byte_data(data->client, PCA9532_REG_PWM(maxleds, 1),
data->pwm[1]);
mutex_unlock(&data->update_lock);
}
@@ -301,17 +338,18 @@ static int pca9532_configure(struct i2c_client *client,
{
int i, err = 0;
int gpios = 0;
+ u8 maxleds = data->chip_info->num_leds;
for (i = 0; i < 2; i++) {
data->pwm[i] = pdata->pwm[i];
data->psc[i] = pdata->psc[i];
- i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(i),
+ i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(maxleds, i),
data->pwm[i]);
- i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(i),
+ i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(maxleds, i),
data->psc[i]);
}
- for (i = 0; i < 16; i++) {
+ for (i = 0; i < data->chip_info->num_leds; i++) {
struct pca9532_led *led = &data->leds[i];
struct pca9532_led *pled = &pdata->leds[i];
led->client = client;
@@ -382,7 +420,7 @@ static int pca9532_configure(struct i2c_client *client,
data->gpio.request = pca9532_gpio_request_pin;
data->gpio.can_sleep = 1;
data->gpio.base = pdata->gpio_base;
- data->gpio.ngpio = 16;
+ data->gpio.ngpio = data->chip_info->num_leds;
data->gpio.dev = &client->dev;
data->gpio.owner = THIS_MODULE;
@@ -424,6 +462,8 @@ static int pca9532_probe(struct i2c_client *client,
if (!data)
return -ENOMEM;
+ data->chip_info = &pca9532_chip_info_tbl[id->driver_data];
+
dev_info(&client->dev, "setting platform data\n");
i2c_set_clientdata(client, data);
data->client = client;
@@ -441,7 +481,7 @@ static int pca9532_remove(struct i2c_client *client)
struct pca9532_data *data = i2c_get_clientdata(client);
int err;
- err = pca9532_destroy_devices(data, 16);
+ err = pca9532_destroy_devices(data, data->chip_info->num_leds);
if (err)
return err;