From 35c77a85463cacf7fe2fa8e998698170c42e80f6 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 21 Aug 2014 18:22:05 -0300 Subject: [media] m88ts2022: convert to RegMap I2C API Use RegMap to cover I2C register routines. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/tuners/Kconfig | 1 + drivers/media/tuners/m88ts2022.c | 231 ++++++++++------------------------ drivers/media/tuners/m88ts2022_priv.h | 2 + 3 files changed, 69 insertions(+), 165 deletions(-) (limited to 'drivers/media/tuners') diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig index d79fd1ce5a18..83199964b54e 100644 --- a/drivers/media/tuners/Kconfig +++ b/drivers/media/tuners/Kconfig @@ -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. diff --git a/drivers/media/tuners/m88ts2022.c b/drivers/media/tuners/m88ts2022.c index 4d7f7e178a04..9f7ebcfc2fa1 100644 --- a/drivers/media/tuners/m88ts2022.c +++ b/drivers/media/tuners/m88ts2022.c @@ -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 = ®, - }, { - .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, ®map_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; diff --git a/drivers/media/tuners/m88ts2022_priv.h b/drivers/media/tuners/m88ts2022_priv.h index e7f6c91a7f72..56c107160f4e 100644 --- a/drivers/media/tuners/m88ts2022_priv.h +++ b/drivers/media/tuners/m88ts2022_priv.h @@ -18,10 +18,12 @@ #define M88TS2022_PRIV_H #include "m88ts2022.h" +#include struct m88ts2022_dev { struct m88ts2022_config cfg; struct i2c_client *client; + struct regmap *regmap; struct dvb_frontend *fe; u32 frequency_khz; }; -- cgit v1.2.3