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[media] mn88472: Convert driver to I2C RegMap API 

Convert driver to I2C RegMap API.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2014-10-26 23:26:04 -03:00 committed by Mauro Carvalho Chehab
parent 528af1952e
commit c1011fb818
3 changed files with 64 additions and 119 deletions
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1
drivers/media/dvb-frontends/Kconfig
View File

@ -444,6 +444,7 @@ config DVB_CXD2820R
config DVB_MN88472
tristate "Panasonic MN88472"
depends on DVB_CORE && I2C
select REGMAP_I2C
default m if !MEDIA_SUBDRV_AUTOSELECT
help
Say Y when you want to support this frontend.

180
drivers/media/dvb-frontends/mn88472.c
View File

@ -16,95 +16,6 @@
#include "mn88472_priv.h"
static struct dvb_frontend_ops mn88472_ops;
/* write multiple registers */
static int mn88472_wregs(struct mn88472_dev *dev, u16 reg, const u8 *val, int len)
{
#define MAX_WR_LEN 21
#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
int ret;
u8 buf[MAX_WR_XFER_LEN];
struct i2c_msg msg[1] = {
{
.addr = (reg >> 8) & 0xff,
.flags = 0,
.len = 1 + len,
.buf = buf,
}
};
if (WARN_ON(len > MAX_WR_LEN))
return -EINVAL;
buf[0] = (reg >> 0) & 0xff;
memcpy(&buf[1], val, len);
ret = i2c_transfer(dev->client[0]->adapter, msg, 1);
if (ret == 1) {
ret = 0;
} else {
dev_warn(&dev->client[0]->dev,
"i2c wr failed=%d reg=%02x len=%d\n",
ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* read multiple registers */
static int mn88472_rregs(struct mn88472_dev *dev, u16 reg, u8 *val, int len)
{
#define MAX_RD_LEN 2
#define MAX_RD_XFER_LEN (MAX_RD_LEN)
int ret;
u8 buf[MAX_RD_XFER_LEN];
struct i2c_msg msg[2] = {
{
.addr = (reg >> 8) & 0xff,
.flags = 0,
.len = 1,
.buf = buf,
}, {
.addr = (reg >> 8) & 0xff,
.flags = I2C_M_RD,
.len = len,
.buf = buf,
}
};
if (WARN_ON(len > MAX_RD_LEN))
return -EINVAL;
buf[0] = (reg >> 0) & 0xff;
ret = i2c_transfer(dev->client[0]->adapter, msg, 2);
if (ret == 2) {
memcpy(val, buf, len);
ret = 0;
} else {
dev_warn(&dev->client[0]->dev,
"i2c rd failed=%d reg=%02x len=%d\n",
ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* write single register */
static int mn88472_wreg(struct mn88472_dev *dev, u16 reg, u8 val)
{
return mn88472_wregs(dev, reg, &val, 1);
}
/* read single register */
static int mn88472_rreg(struct mn88472_dev *dev, u16 reg, u8 *val)
{
return mn88472_rregs(dev, reg, val, 1);
}
static int mn88472_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *s)
{
@ -152,60 +63,61 @@ static int mn88472_set_frontend(struct dvb_frontend *fe)
goto err;
}
ret = mn88472_wregs(dev, 0x1c08, "\x1d", 1);
ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18d9, "\xe3", 1);
ret = regmap_write(dev->regmap[0], 0xd9, 0xe3);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1c83, "\x01", 1);
ret = regmap_write(dev->regmap[2], 0x83, 0x01);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1c00, "\x66\x00\x01\x04\x00", 5);
ret = regmap_bulk_write(dev->regmap[2], 0x00,
"\x66\x00\x01\x04\x00", 5);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1c10,
ret = regmap_bulk_write(dev->regmap[2], 0x10,
"\x3f\x50\x2c\x8f\x80\x00\x08\xee\x08\xee", 10);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1846, "\x00", 1);
ret = regmap_write(dev->regmap[0], 0x46, 0x00);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18ae, "\x00", 1);
ret = regmap_write(dev->regmap[0], 0xae, 0x00);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18b0, "\x0b", 1);
ret = regmap_write(dev->regmap[0], 0xb0, 0x0b);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18b4, "\x00", 1);
ret = regmap_write(dev->regmap[0], 0xb4, 0x00);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18cd, "\x17", 1);
ret = regmap_write(dev->regmap[0], 0xcd, 0x17);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18d4, "\x09", 1);
ret = regmap_write(dev->regmap[0], 0xd4, 0x09);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x18d6, "\x48", 1);
ret = regmap_write(dev->regmap[0], 0xd6, 0x48);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1a00, "\xb0", 1);
ret = regmap_write(dev->regmap[1], 0x00, 0xb0);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1cf8, "\x9f", 1);
ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
if (ret)
goto err;
@ -222,7 +134,7 @@ static int mn88472_read_status(struct dvb_frontend *fe, fe_status_t *status)
struct i2c_client *client = fe->demodulator_priv;
struct mn88472_dev *dev = i2c_get_clientdata(client);
int ret;
u8 u8tmp;
unsigned int utmp;
*status = 0;
@ -231,11 +143,11 @@ static int mn88472_read_status(struct dvb_frontend *fe, fe_status_t *status)
goto err;
}
ret = mn88472_rreg(dev, 0x1a84, &u8tmp);
ret = regmap_read(dev->regmap[1], 0x84, &utmp);
if (ret)
goto err;
if (u8tmp == 0x08)
if (utmp == 0x08)
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
@ -259,11 +171,11 @@ static int mn88472_init(struct dvb_frontend *fe)
dev->warm = false;
/* power on */
ret = mn88472_wreg(dev, 0x1c05, 0x00);
ret = regmap_write(dev->regmap[2], 0x05, 0x00);
if (ret)
goto err;
ret = mn88472_wregs(dev, 0x1c0b, "\x00\x00", 2);
ret = regmap_bulk_write(dev->regmap[2], 0x0b, "\x00\x00", 2);
if (ret)
goto err;
@ -278,7 +190,7 @@ static int mn88472_init(struct dvb_frontend *fe)
dev_info(&client->dev, "downloading firmware from file '%s'\n",
fw_file);
ret = mn88472_wreg(dev, 0x18f5, 0x03);
ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
if (ret)
goto err;
@ -288,7 +200,7 @@ static int mn88472_init(struct dvb_frontend *fe)
if (len > (dev->i2c_wr_max - 1))
len = (dev->i2c_wr_max - 1);
ret = mn88472_wregs(dev, 0x18f6,
ret = regmap_bulk_write(dev->regmap[0], 0xf6,
&fw->data[fw->size - remaining], len);
if (ret) {
dev_err(&client->dev,
@ -297,7 +209,7 @@ static int mn88472_init(struct dvb_frontend *fe)
}
}
ret = mn88472_wreg(dev, 0x18f5, 0x00);
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)
goto err;
@ -325,11 +237,12 @@ static int mn88472_sleep(struct dvb_frontend *fe)
dev_dbg(&client->dev, "\n");
/* power off */
ret = mn88472_wreg(dev, 0x1c0b, 0x30);
ret = regmap_write(dev->regmap[2], 0x0b, 0x30);
if (ret)
goto err;
ret = mn88472_wreg(dev, 0x1c05, 0x3e);
ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
if (ret)
goto err;
@ -382,7 +295,11 @@ static int mn88472_probe(struct i2c_client *client,
struct mn88472_config *config = client->dev.platform_data;
struct mn88472_dev *dev;
int ret;
u8 u8tmp;
unsigned int utmp;
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
dev_dbg(&client->dev, "\n");
@ -399,13 +316,18 @@ static int mn88472_probe(struct i2c_client *client,
goto err;
}
dev->client[0] = client;
dev->i2c_wr_max = config->i2c_wr_max;
dev->client[0] = client;
dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_config);
if (IS_ERR(dev->regmap[0])) {
ret = PTR_ERR(dev->regmap[0]);
goto err_kfree;
}
/* check demod answers to I2C */
ret = mn88472_rreg(dev, 0x1c00, &u8tmp);
ret = regmap_read(dev->regmap[0], 0x00, &utmp);
if (ret)
goto err_kfree;
goto err_regmap_0_regmap_exit;
/*
* Chip has three I2C addresses for different register pages. Used
@ -417,7 +339,12 @@ static int mn88472_probe(struct i2c_client *client,
ret = -ENODEV;
dev_err(&client->dev, "I2C registration failed\n");
if (ret)
goto err_kfree;
goto err_regmap_0_regmap_exit;
}
dev->regmap[1] = regmap_init_i2c(dev->client[1], &regmap_config);
if (IS_ERR(dev->regmap[1])) {
ret = PTR_ERR(dev->regmap[1]);
goto err_client_1_i2c_unregister_device;
}
i2c_set_clientdata(dev->client[1], dev);
@ -426,7 +353,12 @@ static int mn88472_probe(struct i2c_client *client,
ret = -ENODEV;
dev_err(&client->dev, "2nd I2C registration failed\n");
if (ret)
goto err_client_1_i2c_unregister_device;
goto err_regmap_1_regmap_exit;
}
dev->regmap[2] = regmap_init_i2c(dev->client[2], &regmap_config);
if (IS_ERR(dev->regmap[2])) {
ret = PTR_ERR(dev->regmap[2]);
goto err_client_2_i2c_unregister_device;
}
i2c_set_clientdata(dev->client[2], dev);
@ -439,8 +371,14 @@ static int mn88472_probe(struct i2c_client *client,
dev_info(&client->dev, "Panasonic MN88472 successfully attached\n");
return 0;
err_client_2_i2c_unregister_device:
i2c_unregister_device(dev->client[2]);
err_regmap_1_regmap_exit:
regmap_exit(dev->regmap[1]);
err_client_1_i2c_unregister_device:
i2c_unregister_device(dev->client[1]);
err_regmap_0_regmap_exit:
regmap_exit(dev->regmap[0]);
err_kfree:
kfree(dev);
err:
@ -454,10 +392,14 @@ static int mn88472_remove(struct i2c_client *client)
dev_dbg(&client->dev, "\n");
regmap_exit(dev->regmap[2]);
i2c_unregister_device(dev->client[2]);
regmap_exit(dev->regmap[1]);
i2c_unregister_device(dev->client[1]);
regmap_exit(dev->regmap[0]);
kfree(dev);
return 0;

2
drivers/media/dvb-frontends/mn88472_priv.h
View File

@ -20,11 +20,13 @@
#include "dvb_frontend.h"
#include "mn88472.h"
#include <linux/firmware.h>
#include <linux/regmap.h>
#define MN88472_FIRMWARE "dvb-demod-mn88472-02.fw"
struct mn88472_dev {
struct i2c_client *client[3];
struct regmap *regmap[3];
struct dvb_frontend fe;
u16 i2c_wr_max;
fe_delivery_system_t delivery_system;