[PATCH 03/22] [media] tvp5150: convert register access to regmap

Marco Felsch
2018-06-28T16:20:35Z

From: Philipp Zabel <p.zabel@pengutronix.de>

Regmap provides built in debugging, caching and provides dedicated
accessors for bit manipulations in registers, which make the following
changes a lot simpler.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
drivers/media/i2c/tvp5150.c | 199 ++++++++++++++++++++++++------------
1 file changed, 136 insertions(+), 63 deletions(-)

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 509ac243ea97..b3c7b65606fd 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -12,6 +12,7 @@
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_graph.h>
+#include <linux/regmap.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
@@ -47,6 +48,7 @@ struct tvp5150 {
#endif
struct v4l2_ctrl_handler hdl;
struct v4l2_rect rect;
+ struct regmap *regmap;

v4l2_std_id norm; /* Current set standard */
u32 input;
@@ -71,32 +73,14 @@ static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)

static int tvp5150_read(struct v4l2_subdev *sd, unsigned char addr)
{
- struct i2c_client *c = v4l2_get_subdevdata(sd);
- int rc;
-
- rc = i2c_smbus_read_byte_data(c, addr);
- if (rc < 0) {
- dev_err(sd->dev, "i2c i/o error: rc == %d\n", rc);
- return rc;
- }
-
- dev_dbg_lvl(sd->dev, 2, debug, "tvp5150: read 0x%02x = %02x\n", addr, rc);
-
- return rc;
-}
-
-static int tvp5150_write(struct v4l2_subdev *sd, unsigned char addr,
- unsigned char value)
-{
- struct i2c_client *c = v4l2_get_subdevdata(sd);
- int rc;
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ int ret, val;

- dev_dbg_lvl(sd->dev, 2, debug, "tvp5150: writing %02x %02x\n", addr, value);
- rc = i2c_smbus_write_byte_data(c, addr, value);
- if (rc < 0)
- dev_err(sd->dev, "i2c i/o error: rc == %d\n", rc);
+ ret = regmap_read(decoder->regmap, addr, &val);
+ if (ret < 0)
+ return ret;

- return rc;
+ return val;
}

static void dump_reg_range(struct v4l2_subdev *sd, char *s, u8 init,
@@ -288,8 +272,8 @@ static void tvp5150_selmux(struct v4l2_subdev *sd)
decoder->input, decoder->output,
input, opmode);

- tvp5150_write(sd, TVP5150_OP_MODE_CTL, opmode);
- tvp5150_write(sd, TVP5150_VD_IN_SRC_SEL_1, input);
+ regmap_write(decoder->regmap, TVP5150_OP_MODE_CTL, opmode);
+ regmap_write(decoder->regmap, TVP5150_VD_IN_SRC_SEL_1, input);

/*
* Setup the FID/GLCO/VLK/HVLK and INTREQ/GPCL/VBLK output signals. For
@@ -308,7 +292,7 @@ static void tvp5150_selmux(struct v4l2_subdev *sd)
val = (val & ~TVP5150_MISC_CTL_GPCL) | TVP5150_MISC_CTL_HVLK;
else
val = (val & ~TVP5150_MISC_CTL_HVLK) | TVP5150_MISC_CTL_GPCL;
- tvp5150_write(sd, TVP5150_MISC_CTL, val);
+ regmap_write(decoder->regmap, TVP5150_MISC_CTL, val);
};

struct i2c_reg_value {
@@ -583,8 +567,10 @@ static struct i2c_vbi_ram_value vbi_ram_default[] = {
static int tvp5150_write_inittab(struct v4l2_subdev *sd,
const struct i2c_reg_value *regs)
{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+
while (regs->reg != 0xff) {
- tvp5150_write(sd, regs->reg, regs->value);
+ regmap_write(decoder->regmap, regs->reg, regs->value);
regs++;
}
return 0;
@@ -592,15 +578,17 @@ static int tvp5150_write_inittab(struct v4l2_subdev *sd,

static int tvp5150_vdp_init(struct v4l2_subdev *sd)
{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ struct regmap *map = decoder->regmap;
unsigned int i;
int j;

/* Disable Full Field */
- tvp5150_write(sd, TVP5150_FULL_FIELD_ENA, 0);
+ regmap_write(map, TVP5150_FULL_FIELD_ENA, 0);

/* Before programming, Line mode should be at 0xff */
for (i = TVP5150_LINE_MODE_INI; i <= TVP5150_LINE_MODE_END; i++)
- tvp5150_write(sd, i, 0xff);
+ regmap_write(map, i, 0xff);

/* Load Ram Table */
for (j = 0; j < ARRAY_SIZE(vbi_ram_default); j++) {
@@ -609,11 +597,12 @@ static int tvp5150_vdp_init(struct v4l2_subdev *sd)
if (!regs->type.vbi_type)
continue;

- tvp5150_write(sd, TVP5150_CONF_RAM_ADDR_HIGH, regs->reg >> 8);
- tvp5150_write(sd, TVP5150_CONF_RAM_ADDR_LOW, regs->reg);
+ regmap_write(map, TVP5150_CONF_RAM_ADDR_HIGH, regs->reg >> 8);
+ regmap_write(map, TVP5150_CONF_RAM_ADDR_LOW, regs->reg);

for (i = 0; i < 16; i++)
- tvp5150_write(sd, TVP5150_VDP_CONF_RAM_DATA, regs->values[i]);
+ regmap_write(map, TVP5150_VDP_CONF_RAM_DATA,
+ regs->values[i]);
}
return 0;
}
@@ -693,10 +682,10 @@ static int tvp5150_set_vbi(struct v4l2_subdev *sd,
reg = ((line - 6) << 1) + TVP5150_LINE_MODE_INI;

if (fields & 1)
- tvp5150_write(sd, reg, type);
+ regmap_write(decoder->regmap, reg, type);

if (fields & 2)
- tvp5150_write(sd, reg + 1, type);
+ regmap_write(decoder->regmap, reg + 1, type);

return type;
}
@@ -763,7 +752,7 @@ static int tvp5150_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
}

dev_dbg_lvl(sd->dev, 1, debug, "Set video std register to %d.\n", fmt);
- tvp5150_write(sd, TVP5150_VIDEO_STD, fmt);
+ regmap_write(decoder->regmap, TVP5150_VIDEO_STD, fmt);
return 0;
}

@@ -806,7 +795,7 @@ static int tvp5150_reset(struct v4l2_subdev *sd, u32 val)
tvp5150_set_std(sd, decoder->norm);

if (decoder->mbus_type == V4L2_MBUS_PARALLEL)
- tvp5150_write(sd, TVP5150_DATA_RATE_SEL, 0x40);
+ regmap_write(decoder->regmap, TVP5150_DATA_RATE_SEL, 0x40);

return 0;
};
@@ -818,16 +807,17 @@ static int tvp5150_s_ctrl(struct v4l2_ctrl *ctrl)

switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
- tvp5150_write(sd, TVP5150_BRIGHT_CTL, ctrl->val);
+ regmap_write(decoder->regmap, TVP5150_BRIGHT_CTL, ctrl->val);
return 0;
case V4L2_CID_CONTRAST:
- tvp5150_write(sd, TVP5150_CONTRAST_CTL, ctrl->val);
+ regmap_write(decoder->regmap, TVP5150_CONTRAST_CTL, ctrl->val);
return 0;
case V4L2_CID_SATURATION:
- tvp5150_write(sd, TVP5150_SATURATION_CTL, ctrl->val);
+ regmap_write(decoder->regmap, TVP5150_SATURATION_CTL,
+ ctrl->val);
return 0;
case V4L2_CID_HUE:
- tvp5150_write(sd, TVP5150_HUE_CTL, ctrl->val);
+ regmap_write(decoder->regmap, TVP5150_HUE_CTL, ctrl->val);
return 0;
case V4L2_CID_TEST_PATTERN:
decoder->enable = ctrl->val ? false : true;
@@ -925,17 +915,17 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
hmax - TVP5150_MAX_CROP_TOP - rect.top,
hmax - rect.top, 0, 0);

- tvp5150_write(sd, TVP5150_VERT_BLANKING_START, rect.top);
- tvp5150_write(sd, TVP5150_VERT_BLANKING_STOP,
+ regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
+ regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
rect.top + rect.height - hmax);
- tvp5150_write(sd, TVP5150_ACT_VD_CROP_ST_MSB,
+ regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
rect.left >> TVP5150_CROP_SHIFT);
- tvp5150_write(sd, TVP5150_ACT_VD_CROP_ST_LSB,
+ regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
rect.left | (1 << TVP5150_CROP_SHIFT));
- tvp5150_write(sd, TVP5150_ACT_VD_CROP_STP_MSB,
+ regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
(rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
TVP5150_CROP_SHIFT);
- tvp5150_write(sd, TVP5150_ACT_VD_CROP_STP_LSB,
+ regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
rect.left + rect.width - TVP5150_MAX_CROP_LEFT);

decoder->rect = rect;
@@ -1083,7 +1073,7 @@ static int tvp5150_s_stream(struct v4l2_subdev *sd, int enable)
val |= TVP5150_MISC_CTL_SYNC_OE;
}

- tvp5150_write(sd, TVP5150_MISC_CTL, val);
+ regmap_write(decoder->regmap, TVP5150_MISC_CTL, val);

return 0;
}
@@ -1107,6 +1097,8 @@ static int tvp5150_s_routing(struct v4l2_subdev *sd,

static int tvp5150_s_raw_fmt(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt)
{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+
/*
* this is for capturing 36 raw vbi lines
* if there's a way to cut off the beginning 2 vbi lines
@@ -1116,16 +1108,18 @@ static int tvp5150_s_raw_fmt(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt
*/

if (fmt->sample_format == V4L2_PIX_FMT_GREY)
- tvp5150_write(sd, TVP5150_LUMA_PROC_CTL_1, 0x70);
+ regmap_write(decoder->regmap, TVP5150_LUMA_PROC_CTL_1, 0x70);
if (fmt->count[0] == 18 && fmt->count[1] == 18) {
- tvp5150_write(sd, TVP5150_VERT_BLANKING_START, 0x00);
- tvp5150_write(sd, TVP5150_VERT_BLANKING_STOP, 0x01);
+ regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START,
+ 0x00);
+ regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP, 0x01);
}
return 0;
}

static int tvp5150_s_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
{
+ struct tvp5150 *decoder = to_tvp5150(sd);
int i;

if (svbi->service_set != 0) {
@@ -1136,17 +1130,17 @@ static int tvp5150_s_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_f
0xf0, i, 3);
}
/* Enables FIFO */
- tvp5150_write(sd, TVP5150_FIFO_OUT_CTRL, 1);
+ regmap_write(decoder->regmap, TVP5150_FIFO_OUT_CTRL, 1);
} else {
/* Disables FIFO*/
- tvp5150_write(sd, TVP5150_FIFO_OUT_CTRL, 0);
+ regmap_write(decoder->regmap, TVP5150_FIFO_OUT_CTRL, 0);

/* Disable Full Field */
- tvp5150_write(sd, TVP5150_FULL_FIELD_ENA, 0);
+ regmap_write(decoder->regmap, TVP5150_FULL_FIELD_ENA, 0);

/* Disable Line modes */
for (i = TVP5150_LINE_MODE_INI; i <= TVP5150_LINE_MODE_END; i++)
- tvp5150_write(sd, i, 0xff);
+ regmap_write(decoder->regmap, i, 0xff);
}
return 0;
}
@@ -1184,7 +1178,9 @@ static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *

static int tvp5150_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
- return tvp5150_write(sd, reg->reg & 0xff, reg->val & 0xff);
+ struct tvp5150 *decoder = to_tvp5150(sd);
+
+ return regmap_write(decoder->regmap, reg->reg & 0xff, reg->val & 0xff);
}
#endif

@@ -1291,11 +1287,83 @@ static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = {
I2C Client & Driver
****************************************************************************/

+static const struct regmap_range tvp5150_readable_ranges[] = {
+ {
+ .range_min = TVP5150_VD_IN_SRC_SEL_1,
+ .range_max = TVP5150_AUTOSW_MSK,
+ }, {
+ .range_min = TVP5150_COLOR_KIL_THSH_CTL,
+ .range_max = TVP5150_CONF_SHARED_PIN,
+ }, {
+ .range_min = TVP5150_ACT_VD_CROP_ST_MSB,
+ .range_max = TVP5150_HORIZ_SYNC_START,
+ }, {
+ .range_min = TVP5150_VERT_BLANKING_START,
+ .range_max = TVP5150_INTT_CONFIG_REG_B,
+ }, {
+ .range_min = TVP5150_VIDEO_STD,
+ .range_max = TVP5150_VIDEO_STD,
+ }, {
+ .range_min = TVP5150_CB_GAIN_FACT,
+ .range_max = TVP5150_REV_SELECT,
+ }, {
+ .range_min = TVP5150_MSB_DEV_ID,
+ .range_max = TVP5150_STATUS_REG_5,
+ }, {
+ .range_min = TVP5150_CC_DATA_INI,
+ .range_max = TVP5150_TELETEXT_FIL_ENA,
+ }, {
+ .range_min = TVP5150_INT_STATUS_REG_A,
+ .range_max = TVP5150_FIFO_OUT_CTRL,
+ }, {
+ .range_min = TVP5150_FULL_FIELD_ENA,
+ .range_max = TVP5150_FULL_FIELD_MODE_REG,
+ },
+};
+
+bool tvp5150_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TVP5150_VERT_LN_COUNT_MSB:
+ case TVP5150_VERT_LN_COUNT_LSB:
+ case TVP5150_INT_STATUS_REG_A:
+ case TVP5150_INT_STATUS_REG_B:
+ case TVP5150_INT_ACTIVE_REG_B:
+ case TVP5150_STATUS_REG_1:
+ case TVP5150_STATUS_REG_2:
+ case TVP5150_STATUS_REG_3:
+ case TVP5150_STATUS_REG_4:
+ case TVP5150_STATUS_REG_5:
+ /* CC, WSS, VPS, VITC data? */
+ case TVP5150_VBI_FIFO_READ_DATA:
+ case TVP5150_VDP_STATUS_REG:
+ case TVP5150_FIFO_WORD_COUNT:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_access_table tvp5150_readable_table = {
+ .yes_ranges = tvp5150_readable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(tvp5150_readable_ranges),
+};
+
+static struct regmap_config tvp5150_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xff,
+
+ .cache_type = REGCACHE_RBTREE,
+
+ .rd_table = &tvp5150_readable_table,
+ .volatile_reg = tvp5150_volatile_reg,
+};
+
static int tvp5150_detect_version(struct tvp5150 *core)
{
struct v4l2_subdev *sd = &core->sd;
struct i2c_client *c = v4l2_get_subdevdata(sd);
- unsigned int i;
u8 regs[4];
int res;

@@ -1303,11 +1371,10 @@ static int tvp5150_detect_version(struct tvp5150 *core)
* Read consequent registers - TVP5150_MSB_DEV_ID, TVP5150_LSB_DEV_ID,
* TVP5150_ROM_MAJOR_VER, TVP5150_ROM_MINOR_VER
*/
- for (i = 0; i < 4; i++) {
- res = tvp5150_read(sd, TVP5150_MSB_DEV_ID + i);
- if (res < 0)
- return res;
- regs[i] = res;
+ res = regmap_bulk_read(core->regmap, TVP5150_MSB_DEV_ID, regs, 4);
+ if (res < 0) {
+ dev_err(&c->dev, "reading ID registers failed: %d\n", res);
+ return res;
}

core->dev_id = (regs[0] << 8) | regs[1];
@@ -1323,7 +1390,7 @@ static int tvp5150_detect_version(struct tvp5150 *core)
dev_info(sd->dev, "tvp5150am1 detected.\n");

/* ITU-T BT.656.4 timing */
- tvp5150_write(sd, TVP5150_REV_SELECT, 0);
+ regmap_write(core->regmap, TVP5150_REV_SELECT, 0);
} else if (core->dev_id == 0x5151 && core->rom_ver == 0x0100) {
dev_info(sd->dev, "tvp5151 detected.\n");
} else {
@@ -1470,6 +1537,7 @@ static int tvp5150_probe(struct i2c_client *c,
struct tvp5150 *core;
struct v4l2_subdev *sd;
struct device_node *np = c->dev.of_node;
+ struct regmap *map;
int res;

/* Check if the adapter supports the needed features */
@@ -1485,6 +1553,11 @@ static int tvp5150_probe(struct i2c_client *c,
if (!core)
return -ENOMEM;

+ map = devm_regmap_init_i2c(c, &tvp5150_config);
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+ core->regmap = map;
sd = &core->sd;

if (IS_ENABLED(CONFIG_OF) && np) {
--
2.17.1