From: Pablo Anton Date: Fri, 19 Jun 2015 13:23:06 +0000 (-0300) Subject: [media] media: i2c: ADV7604: Migrate to regmap X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f862f57dae5f0555552256b67f5bfd523f97a736;p=linux-beck.git [media] media: i2c: ADV7604: Migrate to regmap This is a preliminary patch in order to add support for ALSA. It replaces all current i2c access with regmap. Signed-off-by: Pablo Anton Signed-off-by: Jean-Michel Hautbois Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index 60630d62e663..8e39bf60cb16 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -188,6 +189,9 @@ struct adv76xx_state { /* i2c clients */ struct i2c_client *i2c_clients[ADV76XX_PAGE_MAX]; + /* Regmaps */ + struct regmap *regmap[ADV76XX_PAGE_MAX]; + /* controls */ struct v4l2_ctrl *detect_tx_5v_ctrl; struct v4l2_ctrl *analog_sampling_phase_ctrl; @@ -373,66 +377,39 @@ static inline unsigned vtotal(const struct v4l2_bt_timings *t) /* ----------------------------------------------------------------------- */ -static s32 adv_smbus_read_byte_data_check(struct i2c_client *client, - u8 command, bool check) -{ - union i2c_smbus_data data; - - if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags, - I2C_SMBUS_READ, command, - I2C_SMBUS_BYTE_DATA, &data)) - return data.byte; - if (check) - v4l_err(client, "error reading %02x, %02x\n", - client->addr, command); - return -EIO; -} - -static s32 adv_smbus_read_byte_data(struct adv76xx_state *state, - enum adv76xx_page page, u8 command) +static int adv76xx_read_check(struct adv76xx_state *state, + int client_page, u8 reg) { - return adv_smbus_read_byte_data_check(state->i2c_clients[page], - command, true); -} - -static s32 adv_smbus_write_byte_data(struct adv76xx_state *state, - enum adv76xx_page page, u8 command, - u8 value) -{ - struct i2c_client *client = state->i2c_clients[page]; - union i2c_smbus_data data; + struct i2c_client *client = state->i2c_clients[client_page]; int err; - int i; + unsigned int val; - data.byte = value; - for (i = 0; i < 3; i++) { - err = i2c_smbus_xfer(client->adapter, client->addr, - client->flags, - I2C_SMBUS_WRITE, command, - I2C_SMBUS_BYTE_DATA, &data); - if (!err) - break; + err = regmap_read(state->regmap[client_page], reg, &val); + + if (err) { + v4l_err(client, "error reading %02x, %02x\n", + client->addr, reg); + return err; } - if (err < 0) - v4l_err(client, "error writing %02x, %02x, %02x\n", - client->addr, command, value); - return err; + return val; } -static s32 adv_smbus_write_i2c_block_data(struct adv76xx_state *state, - enum adv76xx_page page, u8 command, - unsigned length, const u8 *values) +/* adv76xx_write_block(): Write raw data with a maximum of I2C_SMBUS_BLOCK_MAX + * size to one or more registers. + * + * A value of zero will be returned on success, a negative errno will + * be returned in error cases. + */ +static int adv76xx_write_block(struct adv76xx_state *state, int client_page, + unsigned int init_reg, const void *val, + size_t val_len) { - struct i2c_client *client = state->i2c_clients[page]; - union i2c_smbus_data data; + struct regmap *regmap = state->regmap[client_page]; + + if (val_len > I2C_SMBUS_BLOCK_MAX) + val_len = I2C_SMBUS_BLOCK_MAX; - if (length > I2C_SMBUS_BLOCK_MAX) - length = I2C_SMBUS_BLOCK_MAX; - data.block[0] = length; - memcpy(data.block + 1, values, length); - return i2c_smbus_xfer(client->adapter, client->addr, client->flags, - I2C_SMBUS_WRITE, command, - I2C_SMBUS_I2C_BLOCK_DATA, &data); + return regmap_raw_write(regmap, init_reg, val, val_len); } /* ----------------------------------------------------------------------- */ @@ -441,14 +418,14 @@ static inline int io_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_IO, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_IO, reg); } static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_IO, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_IO], reg, val); } static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val) @@ -460,71 +437,70 @@ static inline int avlink_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV7604_PAGE_AVLINK, reg); + return adv76xx_read_check(state, ADV7604_PAGE_AVLINK, reg); } static inline int avlink_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV7604_PAGE_AVLINK, reg, val); + return regmap_write(state->regmap[ADV7604_PAGE_AVLINK], reg, val); } static inline int cec_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_CEC, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_CEC, reg); } static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_CEC, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_CEC], reg, val); } static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_INFOFRAME, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_INFOFRAME, reg); } static inline int infoframe_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_INFOFRAME, - reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_INFOFRAME], reg, val); } static inline int afe_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_AFE, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_AFE, reg); } static inline int afe_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_AFE, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_AFE], reg, val); } static inline int rep_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_REP, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_REP, reg); } static inline int rep_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_REP, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_REP], reg, val); } static inline int rep_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val) @@ -536,28 +512,37 @@ static inline int edid_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_EDID, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_EDID, reg); } static inline int edid_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_EDID, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_EDID], reg, val); } static inline int edid_write_block(struct v4l2_subdev *sd, - unsigned len, const u8 *val) + unsigned int total_len, const u8 *val) { struct adv76xx_state *state = to_state(sd); int err = 0; - int i; + int i = 0; + int len = 0; - v4l2_dbg(2, debug, sd, "%s: write EDID block (%d byte)\n", __func__, len); + v4l2_dbg(2, debug, sd, "%s: write EDID block (%d byte)\n", + __func__, total_len); + + while (!err && i < total_len) { + len = (total_len - i) > I2C_SMBUS_BLOCK_MAX ? + I2C_SMBUS_BLOCK_MAX : + (total_len - i); + + err = adv76xx_write_block(state, ADV76XX_PAGE_EDID, + i, val + i, len); + i += len; + } - for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX) - err = adv_smbus_write_i2c_block_data(state, ADV76XX_PAGE_EDID, - i, I2C_SMBUS_BLOCK_MAX, val + i); return err; } @@ -587,7 +572,7 @@ static inline int hdmi_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_HDMI, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_HDMI, reg); } static u16 hdmi_read16(struct v4l2_subdev *sd, u8 reg, u16 mask) @@ -599,7 +584,7 @@ static inline int hdmi_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_HDMI, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_HDMI], reg, val); } static inline int hdmi_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val) @@ -611,14 +596,14 @@ static inline int test_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_TEST, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_TEST], reg, val); } static inline int cp_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV76XX_PAGE_CP, reg); + return adv76xx_read_check(state, ADV76XX_PAGE_CP, reg); } static u16 cp_read16(struct v4l2_subdev *sd, u8 reg, u16 mask) @@ -630,7 +615,7 @@ static inline int cp_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV76XX_PAGE_CP, reg, val); + return regmap_write(state->regmap[ADV76XX_PAGE_CP], reg, val); } static inline int cp_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val) @@ -642,14 +627,14 @@ static inline int vdp_read(struct v4l2_subdev *sd, u8 reg) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_read_byte_data(state, ADV7604_PAGE_VDP, reg); + return adv76xx_read_check(state, ADV7604_PAGE_VDP, reg); } static inline int vdp_write(struct v4l2_subdev *sd, u8 reg, u8 val) { struct adv76xx_state *state = to_state(sd); - return adv_smbus_write_byte_data(state, ADV7604_PAGE_VDP, reg, val); + return regmap_write(state->regmap[ADV7604_PAGE_VDP], reg, val); } #define ADV76XX_REG(page, offset) (((page) << 8) | (offset)) @@ -660,13 +645,16 @@ static int adv76xx_read_reg(struct v4l2_subdev *sd, unsigned int reg) { struct adv76xx_state *state = to_state(sd); unsigned int page = reg >> 8; + unsigned int val; + int err; if (!(BIT(page) & state->info->page_mask)) return -EINVAL; reg &= 0xff; + err = regmap_read(state->regmap[page], reg, &val); - return adv_smbus_read_byte_data(state, page, reg); + return err ? err : val; } #endif @@ -680,7 +668,7 @@ static int adv76xx_write_reg(struct v4l2_subdev *sd, unsigned int reg, u8 val) reg &= 0xff; - return adv_smbus_write_byte_data(state, page, reg, val); + return regmap_write(state->regmap[page], reg, val); } static void adv76xx_write_reg_seq(struct v4l2_subdev *sd, @@ -976,8 +964,8 @@ static void configure_custom_video_timings(struct v4l2_subdev *sd, /* Should only be set in auto-graphics mode [REF_02, p. 91-92] */ /* setup PLL_DIV_MAN_EN and PLL_DIV_RATIO */ /* IO-map reg. 0x16 and 0x17 should be written in sequence */ - if (adv_smbus_write_i2c_block_data(state, ADV76XX_PAGE_IO, - 0x16, 2, pll)) + if (regmap_raw_write(state->regmap[ADV76XX_PAGE_IO], + 0x16, pll, 2)) v4l2_err(sd, "writing to reg 0x16 and 0x17 failed\n"); /* active video - horizontal timing */ @@ -1028,8 +1016,8 @@ static void adv76xx_set_offset(struct v4l2_subdev *sd, bool auto_offset, u16 off offset_buf[3] = offset_c & 0x0ff; /* Registers must be written in this order with no i2c access in between */ - if (adv_smbus_write_i2c_block_data(state, ADV76XX_PAGE_CP, - 0x77, 4, offset_buf)) + if (regmap_raw_write(state->regmap[ADV76XX_PAGE_CP], + 0x77, offset_buf, 4)) v4l2_err(sd, "%s: i2c error writing to CP reg 0x77, 0x78, 0x79, 0x7a\n", __func__); } @@ -1058,8 +1046,8 @@ static void adv76xx_set_gain(struct v4l2_subdev *sd, bool auto_gain, u16 gain_a, gain_buf[3] = ((gain_c & 0x0ff)); /* Registers must be written in this order with no i2c access in between */ - if (adv_smbus_write_i2c_block_data(state, ADV76XX_PAGE_CP, - 0x73, 4, gain_buf)) + if (regmap_raw_write(state->regmap[ADV76XX_PAGE_CP], + 0x73, gain_buf, 4)) v4l2_err(sd, "%s: i2c error writing to CP reg 0x73, 0x74, 0x75, 0x76\n", __func__); } @@ -2762,6 +2750,148 @@ static int adv76xx_parse_dt(struct adv76xx_state *state) return 0; } +static const struct regmap_config adv76xx_regmap_cnf[] = { + { + .name = "io", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "avlink", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "cec", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "infoframe", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "esdp", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "epp", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "afe", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "rep", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "edid", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + + { + .name = "hdmi", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "test", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "cp", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, + { + .name = "vdp", + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_NONE, + }, +}; + +static int configure_regmap(struct adv76xx_state *state, int region) +{ + int err; + + if (!state->i2c_clients[region]) + return -ENODEV; + + state->regmap[region] = + devm_regmap_init_i2c(state->i2c_clients[region], + &adv76xx_regmap_cnf[region]); + + if (IS_ERR(state->regmap[region])) { + err = PTR_ERR(state->regmap[region]); + v4l_err(state->i2c_clients[region], + "Error initializing regmap %d with error %d\n", + region, err); + return -EINVAL; + } + + return 0; +} + +static int configure_regmaps(struct adv76xx_state *state) +{ + int i, err; + + for (i = ADV7604_PAGE_AVLINK ; i < ADV76XX_PAGE_MAX; i++) { + err = configure_regmap(state, i); + if (err && (err != -ENODEV)) + return err; + } + return 0; +} + static int adv76xx_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -2771,7 +2901,7 @@ static int adv76xx_probe(struct i2c_client *client, struct v4l2_ctrl_handler *hdl; struct v4l2_subdev *sd; unsigned int i; - u16 val; + unsigned int val, val2; int err; /* Check if the adapter supports the needed features */ @@ -2835,23 +2965,49 @@ static int adv76xx_probe(struct i2c_client *client, client->addr); sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + /* Configure IO Regmap region */ + err = configure_regmap(state, ADV76XX_PAGE_IO); + + if (err) { + v4l2_err(sd, "Error configuring IO regmap region\n"); + return -ENODEV; + } + /* * Verify that the chip is present. On ADV7604 the RD_INFO register only * identifies the revision, while on ADV7611 it identifies the model as * well. Use the HDMI slave address on ADV7604 and RD_INFO on ADV7611. */ if (state->info->type == ADV7604) { - val = adv_smbus_read_byte_data_check(client, 0xfb, false); + err = regmap_read(state->regmap[ADV76XX_PAGE_IO], 0xfb, &val); + if (err) { + v4l2_err(sd, "Error %d reading IO Regmap\n", err); + return -ENODEV; + } if (val != 0x68) { - v4l2_info(sd, "not an adv7604 on address 0x%x\n", + v4l2_err(sd, "not an adv7604 on address 0x%x\n", client->addr << 1); return -ENODEV; } } else { - val = (adv_smbus_read_byte_data_check(client, 0xea, false) << 8) - | (adv_smbus_read_byte_data_check(client, 0xeb, false) << 0); - if (val != 0x2051) { - v4l2_info(sd, "not an adv7611 on address 0x%x\n", + err = regmap_read(state->regmap[ADV76XX_PAGE_IO], + 0xea, + &val); + if (err) { + v4l2_err(sd, "Error %d reading IO Regmap\n", err); + return -ENODEV; + } + val2 = val << 8; + err = regmap_read(state->regmap[ADV76XX_PAGE_IO], + 0xeb, + &val); + if (err) { + v4l2_err(sd, "Error %d reading IO Regmap\n", err); + return -ENODEV; + } + val2 |= val; + if (val2 != 0x2051) { + v4l2_err(sd, "not an adv7611 on address 0x%x\n", client->addr << 1); return -ENODEV; } @@ -2941,6 +3097,11 @@ static int adv76xx_probe(struct i2c_client *client, if (err) goto err_work_queues; + /* Configure regmaps */ + err = configure_regmaps(state); + if (err) + goto err_entity; + err = adv76xx_core_init(sd); if (err) goto err_entity;