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Commit 35c77a85 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[media] m88ts2022: convert to RegMap I2C API 



Use RegMap to cover I2C register routines.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent b8d67ab6

drivers/media/tuners/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -226,6 +226,7 @@ config MEDIA_TUNER_FC2580 
config MEDIA_TUNER_M88TS2022

	tristate "Montage M88TS2022 silicon tuner"

	depends on MEDIA_SUPPORT && I2C

	select REGMAP_I2C

	default m if !MEDIA_SUBDRV_AUTOSELECT

	help

	  Montage M88TS2022 silicon tuner driver.

drivers/media/tuners/m88ts2022.c

+66 −165
Original line number Diff line number Diff line
@@ -18,120 +18,12 @@ 


#include "m88ts2022_priv.h"



/* write multiple registers */

static int m88ts2022_wr_regs(struct m88ts2022_dev *dev,

		u8 reg, const u8 *val, int len)

{

#define MAX_WR_LEN 3

#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)

	int ret;

	u8 buf[MAX_WR_XFER_LEN];

	struct i2c_msg msg[1] = {

		{

			.addr = dev->client->addr,

			.flags = 0,

			.len = 1 + len,

			.buf = buf,

		}

	};



	if (WARN_ON(len > MAX_WR_LEN))

		return -EINVAL;



	buf[0] = reg;

	memcpy(&buf[1], val, len);



	ret = i2c_transfer(dev->client->adapter, msg, 1);

	if (ret == 1) {

		ret = 0;

	} else {

		dev_warn(&dev->client->dev,

				"i2c wr failed=%d reg=%02x len=%d\n",

				ret, reg, len);

		ret = -EREMOTEIO;

	}



	return ret;

}



/* read multiple registers */

static int m88ts2022_rd_regs(struct m88ts2022_dev *dev, u8 reg,

		u8 *val, int len)

{

#define MAX_RD_LEN 1

#define MAX_RD_XFER_LEN (MAX_RD_LEN)

	int ret;

	u8 buf[MAX_RD_XFER_LEN];

	struct i2c_msg msg[2] = {

		{

			.addr = dev->client->addr,

			.flags = 0,

			.len = 1,

			.buf = &reg,

		}, {

			.addr = dev->client->addr,

			.flags = I2C_M_RD,

			.len = len,

			.buf = buf,

		}

	};



	if (WARN_ON(len > MAX_RD_LEN))

		return -EINVAL;



	ret = i2c_transfer(dev->client->adapter, msg, 2);

	if (ret == 2) {

		memcpy(val, buf, len);

		ret = 0;

	} else {

		dev_warn(&dev->client->dev,

				"i2c rd failed=%d reg=%02x len=%d\n",

				ret, reg, len);

		ret = -EREMOTEIO;

	}



	return ret;

}



/* write single register */

static int m88ts2022_wr_reg(struct m88ts2022_dev *dev, u8 reg, u8 val)

{

	return m88ts2022_wr_regs(dev, reg, &val, 1);

}



/* read single register */

static int m88ts2022_rd_reg(struct m88ts2022_dev *dev, u8 reg, u8 *val)

{

	return m88ts2022_rd_regs(dev, reg, val, 1);

}



/* write single register with mask */

static int m88ts2022_wr_reg_mask(struct m88ts2022_dev *dev,

		u8 reg, u8 val, u8 mask)

{

	int ret;

	u8 u8tmp;



	/* no need for read if whole reg is written */

	if (mask != 0xff) {

		ret = m88ts2022_rd_regs(dev, reg, &u8tmp, 1);

		if (ret)

			return ret;



		val &= mask;

		u8tmp &= ~mask;

		val |= u8tmp;

	}



	return m88ts2022_wr_regs(dev, reg, &val, 1);

}



static int m88ts2022_cmd(struct dvb_frontend *fe,

		int op, int sleep, u8 reg, u8 mask, u8 val, u8 *reg_val)

{

	struct m88ts2022_dev *dev = fe->tuner_priv;

	int ret, i;

	u8 u8tmp;

	unsigned int utmp;

	struct m88ts2022_reg_val reg_vals[] = {

		{0x51, 0x1f - op},

		{0x51, 0x1f},
@@ -145,7 +37,7 @@ static int m88ts2022_cmd(struct dvb_frontend *fe, 
				i, op, reg, mask, val);



		for (i = 0; i < ARRAY_SIZE(reg_vals); i++) {

			ret = m88ts2022_wr_reg(dev, reg_vals[i].reg,

			ret = regmap_write(dev->regmap, reg_vals[i].reg,

					reg_vals[i].val);

			if (ret)

				goto err;
@@ -153,16 +45,16 @@ static int m88ts2022_cmd(struct dvb_frontend *fe, 


		usleep_range(sleep * 1000, sleep * 10000);



		ret = m88ts2022_rd_reg(dev, reg, &u8tmp);

		ret = regmap_read(dev->regmap, reg, &utmp);

		if (ret)

			goto err;



		if ((u8tmp & mask) != val)

		if ((utmp & mask) != val)

			break;

	}



	if (reg_val)

		*reg_val = u8tmp;

		*reg_val = utmp;

err:

	return ret;

}
@@ -172,7 +64,7 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
	struct m88ts2022_dev *dev = fe->tuner_priv;

	struct dtv_frontend_properties *c = &fe->dtv_property_cache;

	int ret;

	unsigned int frequency_khz, frequency_offset_khz, f_3db_hz;

	unsigned int utmp, frequency_khz, frequency_offset_khz, f_3db_hz;

	unsigned int f_ref_khz, f_vco_khz, div_ref, div_out, pll_n, gdiv28;

	u8 buf[3], u8tmp, cap_code, lpf_gm, lpf_mxdiv, div_max, div_min;

	u16 u16tmp;
@@ -204,7 +96,7 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 


	buf[0] = u8tmp;

	buf[1] = 0x40;

	ret = m88ts2022_wr_regs(dev, 0x10, buf, 2);

	ret = regmap_bulk_write(dev->regmap, 0x10, buf, 2);

	if (ret)

		goto err;
@@ -223,7 +115,7 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
	buf[0] = (u16tmp >> 8) & 0x3f;

	buf[1] = (u16tmp >> 0) & 0xff;

	buf[2] = div_ref - 8;

	ret = m88ts2022_wr_regs(dev, 0x01, buf, 3);

	ret = regmap_bulk_write(dev->regmap, 0x01, buf, 3);

	if (ret)

		goto err;
@@ -236,17 +128,17 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
	if (ret)

		goto err;



	ret = m88ts2022_rd_reg(dev, 0x14, &u8tmp);

	ret = regmap_read(dev->regmap, 0x14, &utmp);

	if (ret)

		goto err;



	u8tmp &= 0x7f;

	if (u8tmp < 64) {

		ret = m88ts2022_wr_reg_mask(dev, 0x10, 0x80, 0x80);

	utmp &= 0x7f;

	if (utmp < 64) {

		ret = regmap_update_bits(dev->regmap, 0x10, 0x80, 0x80);

		if (ret)

			goto err;



		ret = m88ts2022_wr_reg(dev, 0x11, 0x6f);

		ret = regmap_write(dev->regmap, 0x11, 0x6f);

		if (ret)

			goto err;
@@ -255,13 +147,13 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
			goto err;

	}



	ret = m88ts2022_rd_reg(dev, 0x14, &u8tmp);

	ret = regmap_read(dev->regmap, 0x14, &utmp);

	if (ret)

		goto err;



	u8tmp &= 0x1f;

	if (u8tmp > 19) {

		ret = m88ts2022_wr_reg_mask(dev, 0x10, 0x00, 0x02);

	utmp &= 0x1f;

	if (utmp > 19) {

		ret = regmap_update_bits(dev->regmap, 0x10, 0x02, 0x00);

		if (ret)

			goto err;

	}
@@ -270,26 +162,26 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x25, 0x00);

	ret = regmap_write(dev->regmap, 0x25, 0x00);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x27, 0x70);

	ret = regmap_write(dev->regmap, 0x27, 0x70);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x41, 0x09);

	ret = regmap_write(dev->regmap, 0x41, 0x09);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x08, 0x0b);

	ret = regmap_write(dev->regmap, 0x08, 0x0b);

	if (ret)

		goto err;



	/* filters */

	gdiv28 = DIV_ROUND_CLOSEST(f_ref_khz * 1694U, 1000000U);



	ret = m88ts2022_wr_reg(dev, 0x04, gdiv28);

	ret = regmap_write(dev->regmap, 0x04, gdiv28);

	if (ret)

		goto err;
@@ -299,7 +191,7 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 


	cap_code = u8tmp & 0x3f;



	ret = m88ts2022_wr_reg(dev, 0x41, 0x0d);

	ret = regmap_write(dev->regmap, 0x41, 0x0d);

	if (ret)

		goto err;
@@ -327,11 +219,11 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
		lpf_mxdiv = DIV_ROUND_CLOSEST(++lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz);

	lpf_mxdiv = clamp_val(lpf_mxdiv, 0U, div_max);



	ret = m88ts2022_wr_reg(dev, 0x04, lpf_mxdiv);

	ret = regmap_write(dev->regmap, 0x04, lpf_mxdiv);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x06, lpf_gm);

	ret = regmap_write(dev->regmap, 0x06, lpf_gm);

	if (ret)

		goto err;
@@ -341,7 +233,7 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 


	cap_code = u8tmp & 0x3f;



	ret = m88ts2022_wr_reg(dev, 0x41, 0x09);

	ret = regmap_write(dev->regmap, 0x41, 0x09);

	if (ret)

		goto err;
@@ -353,15 +245,15 @@ static int m88ts2022_set_params(struct dvb_frontend *fe) 
	cap_code = (cap_code + u8tmp) / 2;



	u8tmp = cap_code | 0x80;

	ret = m88ts2022_wr_reg(dev, 0x25, u8tmp);

	ret = regmap_write(dev->regmap, 0x25, u8tmp);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x27, 0x30);

	ret = regmap_write(dev->regmap, 0x27, 0x30);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x08, 0x09);

	ret = regmap_write(dev->regmap, 0x08, 0x09);

	if (ret)

		goto err;
@@ -396,11 +288,11 @@ static int m88ts2022_init(struct dvb_frontend *fe) 


	dev_dbg(&dev->client->dev, "\n");



	ret = m88ts2022_wr_reg(dev, 0x00, 0x01);

	ret = regmap_write(dev->regmap, 0x00, 0x01);

	if (ret)

		goto err;



	ret = m88ts2022_wr_reg(dev, 0x00, 0x03);

	ret = regmap_write(dev->regmap, 0x00, 0x03);

	if (ret)

		goto err;
@@ -410,7 +302,7 @@ static int m88ts2022_init(struct dvb_frontend *fe) 
		break;

	case M88TS2022_CLOCK_OUT_ENABLED:

		u8tmp = 0x70;

		ret = m88ts2022_wr_reg(dev, 0x05, dev->cfg.clock_out_div);

		ret = regmap_write(dev->regmap, 0x05, dev->cfg.clock_out_div);

		if (ret)

			goto err;

		break;
@@ -421,7 +313,7 @@ static int m88ts2022_init(struct dvb_frontend *fe) 
		goto err;

	}



	ret = m88ts2022_wr_reg(dev, 0x42, u8tmp);

	ret = regmap_write(dev->regmap, 0x42, u8tmp);

	if (ret)

		goto err;
@@ -430,12 +322,12 @@ static int m88ts2022_init(struct dvb_frontend *fe) 
	else

		u8tmp = 0x6c;



	ret = m88ts2022_wr_reg(dev, 0x62, u8tmp);

	ret = regmap_write(dev->regmap, 0x62, u8tmp);

	if (ret)

		goto err;



	for (i = 0; i < ARRAY_SIZE(reg_vals); i++) {

		ret = m88ts2022_wr_reg(dev, reg_vals[i].reg, reg_vals[i].val);

		ret = regmap_write(dev->regmap, reg_vals[i].reg, reg_vals[i].val);

		if (ret)

			goto err;

	}
@@ -452,7 +344,7 @@ static int m88ts2022_sleep(struct dvb_frontend *fe) 


	dev_dbg(&dev->client->dev, "\n");



	ret = m88ts2022_wr_reg(dev, 0x00, 0x00);

	ret = regmap_write(dev->regmap, 0x00, 0x00);

	if (ret)

		goto err;

err:
@@ -485,29 +377,28 @@ static int m88ts2022_get_rf_strength(struct dvb_frontend *fe, u16 *strength) 
{

	struct m88ts2022_dev *dev = fe->tuner_priv;

	int ret;

	u8 u8tmp;

	u16 gain, u16tmp;

	unsigned int gain1, gain2, gain3;

	unsigned int utmp, gain1, gain2, gain3;



	ret = m88ts2022_rd_reg(dev, 0x3d, &u8tmp);

	ret = regmap_read(dev->regmap, 0x3d, &utmp);

	if (ret)

		goto err;



	gain1 = (u8tmp >> 0) & 0x1f;

	gain1 = (utmp >> 0) & 0x1f;

	gain1 = clamp(gain1, 0U, 15U);



	ret = m88ts2022_rd_reg(dev, 0x21, &u8tmp);

	ret = regmap_read(dev->regmap, 0x21, &utmp);

	if (ret)

		goto err;



	gain2 = (u8tmp >> 0) & 0x1f;

	gain2 = (utmp >> 0) & 0x1f;

	gain2 = clamp(gain2, 2U, 16U);



	ret = m88ts2022_rd_reg(dev, 0x66, &u8tmp);

	ret = regmap_read(dev->regmap, 0x66, &utmp);

	if (ret)

		goto err;



	gain3 = (u8tmp >> 3) & 0x07;

	gain3 = (utmp >> 3) & 0x07;

	gain3 = clamp(gain3, 0U, 6U);



	gain = gain1 * 265 + gain2 * 338 + gain3 * 285;
@@ -546,7 +437,12 @@ static int m88ts2022_probe(struct i2c_client *client, 
	struct dvb_frontend *fe = cfg->fe;

	struct m88ts2022_dev *dev;

	int ret;

	u8 chip_id, u8tmp;

	u8 u8tmp;

	unsigned int utmp;

	static const struct regmap_config regmap_config = {

		.reg_bits = 8,

		.val_bits = 8,

	};



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	if (!dev) {
@@ -557,33 +453,38 @@ static int m88ts2022_probe(struct i2c_client *client, 


	memcpy(&dev->cfg, cfg, sizeof(struct m88ts2022_config));

	dev->client = client;

	dev->regmap = devm_regmap_init_i2c(client, &regmap_config);

	if (IS_ERR(dev->regmap)) {

		ret = PTR_ERR(dev->regmap);

		goto err;

	}



	/* check if the tuner is there */

	ret = m88ts2022_rd_reg(dev, 0x00, &u8tmp);

	ret = regmap_read(dev->regmap, 0x00, &utmp);

	if (ret)

		goto err;



	if ((u8tmp & 0x03) == 0x00) {

		ret = m88ts2022_wr_reg(dev, 0x00, 0x01);

		if (ret < 0)

	if ((utmp & 0x03) == 0x00) {

		ret = regmap_write(dev->regmap, 0x00, 0x01);

		if (ret)

			goto err;



		usleep_range(2000, 50000);

	}



	ret = m88ts2022_wr_reg(dev, 0x00, 0x03);

	ret = regmap_write(dev->regmap, 0x00, 0x03);

	if (ret)

		goto err;



	usleep_range(2000, 50000);



	ret = m88ts2022_rd_reg(dev, 0x00, &chip_id);

	ret = regmap_read(dev->regmap, 0x00, &utmp);

	if (ret)

		goto err;



	dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);

	dev_dbg(&dev->client->dev, "chip_id=%02x\n", utmp);



	switch (chip_id) {

	switch (utmp) {

	case 0xc3:

	case 0x83:

		break;
@@ -597,7 +498,7 @@ static int m88ts2022_probe(struct i2c_client *client, 
		break;

	case M88TS2022_CLOCK_OUT_ENABLED:

		u8tmp = 0x70;

		ret = m88ts2022_wr_reg(dev, 0x05, dev->cfg.clock_out_div);

		ret = regmap_write(dev->regmap, 0x05, dev->cfg.clock_out_div);

		if (ret)

			goto err;

		break;
@@ -608,7 +509,7 @@ static int m88ts2022_probe(struct i2c_client *client, 
		goto err;

	}



	ret = m88ts2022_wr_reg(dev, 0x42, u8tmp);

	ret = regmap_write(dev->regmap, 0x42, u8tmp);

	if (ret)

		goto err;
@@ -617,12 +518,12 @@ static int m88ts2022_probe(struct i2c_client *client, 
	else

		u8tmp = 0x6c;



	ret = m88ts2022_wr_reg(dev, 0x62, u8tmp);

	ret = regmap_write(dev->regmap, 0x62, u8tmp);

	if (ret)

		goto err;



	/* sleep */

	ret = m88ts2022_wr_reg(dev, 0x00, 0x00);

	ret = regmap_write(dev->regmap, 0x00, 0x00);

	if (ret)

		goto err;

drivers/media/tuners/m88ts2022_priv.h

+2 −0
Original line number Diff line number Diff line
@@ -18,10 +18,12 @@ 
#define M88TS2022_PRIV_H



#include "m88ts2022.h"

#include <linux/regmap.h>



struct m88ts2022_dev {

	struct m88ts2022_config cfg;

	struct i2c_client *client;

	struct regmap *regmap;

	struct dvb_frontend *fe;

	u32 frequency_khz;

};