[PATCH v10 0/8] i2c-atr and FPDLink

From: Tomi Valkeinen
Date: Wed Feb 22 2023 - 08:29:30 EST

Hi,

You can find v9 from:

https://lore.kernel.org/all/20230216140747.445477-1-tomi.valkeinen@xxxxxxxxxxxxxxxx/

Diff to v9 included below.

Main changes in v10:
- Switch pre-increments to post-increments
- Add macros for FPD3_RX_ID lengths
- Use regmap_bulk_read in 16 bit reg accessors

Tomi

Luca Ceresoli (1):
i2c: add I2C Address Translator (ATR) support

Tomi Valkeinen (7):
media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX
dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer
dt-bindings: media: add TI DS90UB953 FPD-Link III Serializer
dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer
media: i2c: add DS90UB960 driver
media: i2c: add DS90UB913 driver
media: i2c: add DS90UB953 driver

.../bindings/media/i2c/ti,ds90ub913.yaml | 133 +
.../bindings/media/i2c/ti,ds90ub953.yaml | 134 +
.../bindings/media/i2c/ti,ds90ub960.yaml | 431 ++
Documentation/i2c/index.rst | 1 +
Documentation/i2c/muxes/i2c-atr.rst | 97 +
MAINTAINERS | 16 +
drivers/i2c/Kconfig | 9 +
drivers/i2c/Makefile | 1 +
drivers/i2c/i2c-atr.c | 548 +++
drivers/media/i2c/Kconfig | 47 +
drivers/media/i2c/Makefile | 3 +
drivers/media/i2c/ds90ub913.c | 906 ++++
drivers/media/i2c/ds90ub953.c | 1400 ++++++
drivers/media/i2c/ds90ub960.c | 4172 +++++++++++++++++
drivers/media/v4l2-core/v4l2-subdev.c | 17 +-
include/linux/i2c-atr.h | 116 +
include/media/i2c/ds90ub9xx.h | 22 +
include/media/v4l2-subdev.h | 16 +-
18 files changed, 8062 insertions(+), 7 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
create mode 100644 Documentation/i2c/muxes/i2c-atr.rst
create mode 100644 drivers/i2c/i2c-atr.c
create mode 100644 drivers/media/i2c/ds90ub913.c
create mode 100644 drivers/media/i2c/ds90ub953.c
create mode 100644 drivers/media/i2c/ds90ub960.c
create mode 100644 include/linux/i2c-atr.h
create mode 100644 include/media/i2c/ds90ub9xx.h

Interdiff against v9:
diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c
index a41e941ad972..5ab890b83670 100644
--- a/drivers/i2c/i2c-atr.c
+++ b/drivers/i2c/i2c-atr.c
@@ -298,8 +298,11 @@ static void i2c_atr_detach_client(struct i2c_adapter *adapter,
atr->ops->detach_client(atr, chan->chan_id, client);

c2a = i2c_atr_find_mapping_by_client(&chan->alias_list, client);
- if (!c2a)
- return; /* This shouldn't happen */
+ if (!c2a) {
+ /* This should never happen */
+ dev_warn(atr->dev, "Unable to find address mapping\n");
+ return;
+ }

dev_dbg(atr->dev,
"chan%u: client 0x%02x unmapped from alias 0x%02x (%s)\n",
diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
index f7696bce7c77..203f7cceae23 100644
--- a/drivers/media/i2c/ds90ub913.c
+++ b/drivers/media/i2c/ds90ub913.c
@@ -108,7 +108,7 @@ static const struct ub913_format_info *ub913_find_format(u32 incode)
{
unsigned int i;

- for (i = 0; i < ARRAY_SIZE(ub913_formats); ++i) {
+ for (i = 0; i < ARRAY_SIZE(ub913_formats); i++) {
if (ub913_formats[i].incode == incode)
return &ub913_formats[i];
}
@@ -276,7 +276,7 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_krouting *routing)
{
- static const struct v4l2_mbus_framefmt informat = {
+ static const struct v4l2_mbus_framefmt in_format = {
.width = 640,
.height = 480,
.code = MEDIA_BUS_FMT_UYVY8_2X8,
@@ -286,7 +286,7 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,
.quantization = V4L2_QUANTIZATION_LIM_RANGE,
.xfer_func = V4L2_XFER_FUNC_SRGB,
};
- static const struct v4l2_mbus_framefmt outformat = {
+ static const struct v4l2_mbus_framefmt out_format = {
.width = 640,
.height = 480,
.code = MEDIA_BUS_FMT_UYVY8_1X16,
@@ -319,11 +319,11 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,

stream_configs = &state->stream_configs;

- for (i = 0; i < stream_configs->num_configs; ++i) {
+ for (i = 0; i < stream_configs->num_configs; i++) {
if (stream_configs->configs[i].pad == UB913_PAD_SINK)
- stream_configs->configs[i].fmt = informat;
+ stream_configs->configs[i].fmt = in_format;
else
- stream_configs->configs[i].fmt = outformat;
+ stream_configs->configs[i].fmt = out_format;
}

return 0;
@@ -374,7 +374,7 @@ static int ub913_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
if (route->source_pad != pad)
continue;

- for (i = 0; i < source_fd.num_entries; ++i) {
+ for (i = 0; i < source_fd.num_entries; i++) {
if (source_fd.entry[i].stream == route->sink_stream)
break;
}
diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
index 6efe1460c976..a77908da5c38 100644
--- a/drivers/media/i2c/ds90ub953.c
+++ b/drivers/media/i2c/ds90ub953.c
@@ -87,6 +87,7 @@
#define UB953_REG_IND_ACC_DATA 0xb2

#define UB953_REG_FPD3_RX_ID(n) (0xf0 + (n))
+#define UB953_REG_FPD3_RX_ID_LEN 6

/* Indirect register blocks */
#define UB953_IND_TARGET_PAT_GEN 0x00
@@ -272,14 +273,14 @@ static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)

ret = ub953_select_ind_reg_block(priv, block);
if (ret)
- goto out;
+ goto out_unlock;

ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg);
if (ret) {
dev_err(&priv->client->dev,
"Write to IND_ACC_ADDR failed when writing %u:%x02x: %d\n",
block, reg, ret);
- goto out;
+ goto out_unlock;
}

ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val);
@@ -289,7 +290,7 @@ static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)
block, reg, ret);
}

-out:
+out_unlock:
mutex_unlock(&priv->reg_lock);

return ret;
@@ -498,7 +499,7 @@ static int ub953_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
if (route->source_pad != pad)
continue;

- for (i = 0; i < source_fd.num_entries; ++i) {
+ for (i = 0; i < source_fd.num_entries; i++) {
if (source_fd.entry[i].stream == route->sink_stream) {
source_entry = &source_fd.entry[i];
break;
@@ -591,16 +592,15 @@ static int ub953_log_status(struct v4l2_subdev *sd)
struct device *dev = &priv->client->dev;
u8 v = 0, v1 = 0, v2 = 0;
unsigned int i;
- char id[7];
+ char id[UB953_REG_FPD3_RX_ID_LEN];
u8 gpio_local_data;
u8 gpio_input_ctrl;
u8 gpio_pin_sts;

- for (i = 0; i < 6; ++i)
+ for (i = 0; i < sizeof(id); i++)
ub953_read(priv, UB953_REG_FPD3_RX_ID(i), &id[i]);
- id[6] = 0;

- dev_info(dev, "ID '%s'\n", id);
+ dev_info(dev, "ID '%.*s'\n", sizeof(id), id);

ub953_read(priv, UB953_REG_GENERAL_STATUS, &v);
dev_info(dev, "GENERAL_STATUS %#02x\n", v);
@@ -638,7 +638,7 @@ static int ub953_log_status(struct v4l2_subdev *sd)
ub953_read(priv, UB953_REG_GPIO_INPUT_CTRL, &gpio_input_ctrl);
ub953_read(priv, UB953_REG_GPIO_PIN_STS, &gpio_pin_sts);

- for (i = 0; i < UB953_NUM_GPIOS; ++i) {
+ for (i = 0; i < UB953_NUM_GPIOS; i++) {
dev_info(dev,
"GPIO%u: remote: %u is_input: %u is_output: %u val: %u sts: %u\n",
i,
diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c
index 1ae0c7cda7c7..c9dfe2ea0dfb 100644
--- a/drivers/media/i2c/ds90ub960.c
+++ b/drivers/media/i2c/ds90ub960.c
@@ -7,7 +7,7 @@
*/

/*
- * (Possible) TODOs
+ * (Possible) TODOs:
*
* - PM for serializer and remote peripherals. We need to manage:
* - VPOC
@@ -347,6 +347,7 @@
#define UB960_RR_CHANNEL_MODE 0xe4 /* UB9702 */

#define UB960_SR_FPD3_RX_ID(n) (0xf0 + (n))
+#define UB960_SR_FPD3_RX_ID_LEN 6

#define UB960_SR_I2C_RX_ID(n) (0xf8 + (n)) /* < UB960_FPD_RX_NPORTS */

@@ -487,10 +488,11 @@ struct ub960_txport {
struct atr_alias_table_entry {
u16 alias_id; /* Alias ID from DT */

- bool in_use;
u8 nport;
u8 slave_id; /* i2c client's local i2c address */
u8 port_reg_idx;
+
+ bool in_use;
};

struct ub960_data {
@@ -595,7 +597,7 @@ static const struct ub960_format_info *ub960_find_format(u32 code)
{
unsigned int i;

- for (i = 0; i < ARRAY_SIZE(ub960_formats); ++i) {
+ for (i = 0; i < ARRAY_SIZE(ub960_formats); i++) {
if (ub960_formats[i].code == code)
return &ub960_formats[i];
}
@@ -667,26 +669,19 @@ static int ub960_update_bits(struct ub960_data *priv, u8 reg, u8 mask, u8 val)
static int ub960_read16(struct ub960_data *priv, u8 reg, u16 *val)
{
struct device *dev = &priv->client->dev;
- unsigned int v1, v2;
+ __be16 __v;
int ret;

mutex_lock(&priv->reg_lock);

- ret = regmap_read(priv->regmap, reg, &v1);
+ ret = regmap_bulk_read(priv->regmap, reg, &__v, 2);
if (ret) {
dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
__func__, reg, ret);
goto out_unlock;
}

- ret = regmap_read(priv->regmap, reg + 1, &v2);
- if (ret) {
- dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
- __func__, reg + 1, ret);
- goto out_unlock;
- }
-
- *val = (v1 << 8) | v2;
+ *val = be16_to_cpu(__v);

out_unlock:
mutex_unlock(&priv->reg_lock);
@@ -793,8 +788,7 @@ static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
u16 *val)
{
struct device *dev = &priv->client->dev;
- unsigned int v1;
- unsigned int v2;
+ __be16 __v;
int ret;

mutex_lock(&priv->reg_lock);
@@ -803,21 +797,14 @@ static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
if (ret)
goto out_unlock;

- ret = regmap_read(priv->regmap, reg, &v1);
+ ret = regmap_bulk_read(priv->regmap, reg, &__v, 2);
if (ret) {
dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
__func__, reg, ret);
goto out_unlock;
}

- ret = regmap_read(priv->regmap, reg + 1, &v2);
- if (ret) {
- dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
- __func__, reg + 1, ret);
- goto out_unlock;
- }
-
- *val = (v1 << 8) | v2;
+ *val = be16_to_cpu(__v);

out_unlock:
mutex_unlock(&priv->reg_lock);
@@ -1072,7 +1059,7 @@ static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
* 2. Construct a bitmask of port's used alias entries
*/

- for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; pool_idx++) {
struct atr_alias_table_entry *e;

e = &priv->atr.aliases[pool_idx];
@@ -1133,7 +1120,7 @@ static void ub960_atr_detach_client(struct i2c_atr *atr, u32 chan_id,

/* Find alias mapped to this client */

- for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; pool_idx++) {
entry = &priv->atr.aliases[pool_idx];

if (entry->in_use && entry->nport == rxport->nport &&
@@ -1271,7 +1258,7 @@ static int ub960_rxport_enable_vpocs(struct ub960_data *priv)
unsigned int nport;
int ret;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport || !rxport->vpoc)
@@ -1301,7 +1288,7 @@ static void ub960_rxport_disable_vpocs(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport || !rxport->vpoc)
@@ -1331,7 +1318,7 @@ static void ub960_clear_rx_errors(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport)
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++)
ub960_rxport_clear_errors(priv, nport);
}

@@ -1768,7 +1755,7 @@ static int ub960_rxport_add_serializers(struct ub960_data *priv)
unsigned int nport;
int ret;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport)
@@ -1798,7 +1785,7 @@ static void ub960_rxport_remove_serializers(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport)
@@ -1875,7 +1862,7 @@ static int ub960_init_tx_ports(struct ub960_data *priv)
}
}

- for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
struct ub960_txport *txport = priv->txports[nport];

if (!txport)
@@ -2204,7 +2191,7 @@ static int ub960_init_rx_ports(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport)
@@ -2432,11 +2419,11 @@ static int ub960_validate_stream_vcs(struct ub960_data *priv)
unsigned int nport;
unsigned int i;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];
struct v4l2_mbus_frame_desc desc;
int ret;
- u8 cur_vc;
+ u8 vc;

if (!rxport)
continue;
@@ -2449,15 +2436,13 @@ static int ub960_validate_stream_vcs(struct ub960_data *priv)
if (desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
continue;

- for (i = 0; i < desc.num_entries; ++i) {
- u8 vc = desc.entry[i].bus.csi2.vc;
+ if (desc.num_entries == 0)
+ continue;

- if (i == 0) {
- cur_vc = vc;
- continue;
- }
+ vc = desc.entry[0].bus.csi2.vc;

- if (vc == cur_vc)
+ for (i = 1; i < desc.num_entries; i++) {
+ if (vc == desc.entry[i].bus.csi2.vc)
continue;

dev_err(&priv->client->dev,
@@ -2550,7 +2535,7 @@ static int ub960_configure_ports_for_streaming(struct ub960_data *priv,

fwd_ctl = 0;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];
u8 vc = vc_map[nport];

@@ -2587,7 +2572,7 @@ static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
unsigned int i;

/* Map all VCs from this port to VC(nport) */
- for (i = 0; i < 8; ++i)
+ for (i = 0; i < 8; i++)
ub960_rxport_write(priv, nport,
UB960_RR_VC_ID_MAP(i),
nport);
@@ -2615,7 +2600,7 @@ static void ub960_update_streaming_status(struct ub960_data *priv)
{
unsigned int i;

- for (i = 0; i < UB960_MAX_NPORTS; ++i) {
+ for (i = 0; i < UB960_MAX_NPORTS; i++) {
if (priv->stream_enable_mask[i])
break;
}
@@ -2665,7 +2650,7 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
sink_streams[nport] |= BIT_ULL(route->sink_stream);
}

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
if (!sink_streams[nport])
continue;

@@ -2703,7 +2688,7 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
return 0;

err:
- for (nport = 0; nport < failed_port; ++nport) {
+ for (nport = 0; nport < failed_port; nport++) {
if (!sink_streams[nport])
continue;

@@ -2759,7 +2744,7 @@ static int ub960_disable_streams(struct v4l2_subdev *sd,
sink_streams[nport] |= BIT_ULL(route->sink_stream);
}

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
if (!sink_streams[nport])
continue;

@@ -2886,7 +2871,7 @@ static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
goto out_unlock;
}

- for (i = 0; i < source_fd.num_entries; ++i) {
+ for (i = 0; i < source_fd.num_entries; i++) {
if (source_fd.entry[i].stream == route->sink_stream) {
source_entry = &source_fd.entry[i];
break;
@@ -3025,17 +3010,16 @@ static int ub960_log_status(struct v4l2_subdev *sd)
unsigned int i;
u16 v16 = 0;
u8 v = 0;
- u8 id[7];
+ u8 id[UB960_SR_FPD3_RX_ID_LEN];

state = v4l2_subdev_lock_and_get_active_state(sd);

- for (i = 0; i < 6; ++i)
+ for (i = 0; i < sizeof(id); i++)
ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
- id[6] = 0;

- dev_info(dev, "ID '%s'\n", id);
+ dev_info(dev, "ID '%.*s'\n", sizeof(id), id);

- for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
struct ub960_txport *txport = priv->txports[nport];

dev_info(dev, "TX %u\n", nport);
@@ -3062,7 +3046,7 @@ static int ub960_log_status(struct v4l2_subdev *sd)
dev_info(dev, "\tline error counter %u\n", v16);
}

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];
u8 eq_level;
s8 strobe_pos;
@@ -3141,7 +3125,7 @@ static int ub960_log_status(struct v4l2_subdev *sd)
dev_info(dev, "\tEQ level %u\n", eq_level);

/* GPIOs */
- for (i = 0; i < UB960_NUM_BC_GPIOS; ++i) {
+ for (i = 0; i < UB960_NUM_BC_GPIOS; i++) {
u8 ctl_reg;
u8 ctl_shift;

@@ -3201,12 +3185,12 @@ static irqreturn_t ub960_handle_events(int irq, void *arg)

dev_dbg(&priv->client->dev, "FWD_STS %#02x\n", fwd_sts);

- for (i = 0; i < priv->hw_data->num_txports; ++i) {
+ for (i = 0; i < priv->hw_data->num_txports; i++) {
if (int_sts & UB960_SR_INTERRUPT_STS_IS_CSI_TX(i))
ub960_csi_handle_events(priv, i);
}

- for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ for (i = 0; i < priv->hw_data->num_rxports; i++) {
if (!priv->rxports[i])
continue;

@@ -3233,7 +3217,7 @@ static void ub960_txport_free_ports(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
struct ub960_txport *txport = priv->txports[nport];

if (!txport)
@@ -3248,7 +3232,7 @@ static void ub960_rxport_free_ports(struct ub960_data *priv)
{
unsigned int nport;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport)
@@ -3284,7 +3268,7 @@ static int ub960_parse_dt_base(struct ub960_data *priv)
return 0;

priv->atr.aliases = devm_kcalloc(dev, table_size,
- sizeof(struct atr_alias_table_entry),
+ sizeof(*priv->atr.aliases),
GFP_KERNEL);
if (!priv->atr.aliases)
return -ENOMEM;
@@ -3302,7 +3286,7 @@ static int ub960_parse_dt_base(struct ub960_data *priv)
return ret;
}

- for (i = 0; i < table_size; ++i)
+ for (i = 0; i < table_size; i++)
priv->atr.aliases[i].alias_id = aliases[i];

kfree(aliases);
@@ -3387,12 +3371,15 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
"ti,strobe-pos", ret);
return ret;
}
- } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
- strobe_pos > UB960_MAX_MANUAL_STROBE_POS) {
- dev_err(dev, "rx%u: illegal 'strobe-pos' value: %d\n", nport,
- strobe_pos);
} else {
- /* NOTE: ignored unless global manual strobe pos is set */
+ if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
+ strobe_pos > UB960_MAX_MANUAL_STROBE_POS) {
+ dev_err(dev, "rx%u: illegal 'strobe-pos' value: %d\n",
+ nport, strobe_pos);
+ return -EINVAL;
+ }
+
+ /* NOTE: ignored unless global manual strobe pos is also set */
rxport->eq.strobe_pos = strobe_pos;
if (!priv->strobe.manual)
dev_warn(dev,
@@ -3407,10 +3394,13 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
"ti,eq-level", ret);
return ret;
}
- } else if (eq_level > UB960_MAX_EQ_LEVEL) {
- dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n", nport,
- eq_level);
} else {
+ if (eq_level > UB960_MAX_EQ_LEVEL) {
+ dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n",
+ nport, eq_level);
+ return -EINVAL;
+ }
+
rxport->eq.manual_eq = true;
rxport->eq.manual.eq_level = eq_level;
}
@@ -3486,8 +3476,9 @@ static int ub960_parse_dt_rxport(struct ub960_data *priv, unsigned int nport,
struct fwnode_handle *link_fwnode,
struct fwnode_handle *ep_fwnode)
{
- static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
- "vpoc2", "vpoc3" };
+ static const char *vpoc_names[UB960_MAX_RX_NPORTS] = {
+ "vpoc0", "vpoc1", "vpoc2", "vpoc3"
+ };
struct device *dev = &priv->client->dev;
struct ub960_rxport *rxport;
int ret;
@@ -3576,7 +3567,7 @@ static int ub960_parse_dt_rxports(struct ub960_data *priv)

priv->strobe.manual = fwnode_property_read_bool(links_fwnode, "ti,manual-strobe");

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct fwnode_handle *link_fwnode;
struct fwnode_handle *ep_fwnode;

@@ -3619,7 +3610,7 @@ static int ub960_parse_dt_txports(struct ub960_data *priv)
u32 nport;
int ret;

- for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
unsigned int port = nport + priv->hw_data->num_rxports;
struct fwnode_handle *ep_fwnode;

@@ -3696,7 +3687,7 @@ static int ub960_notify_bound(struct v4l2_async_notifier *notifier,
return ret;
}

- for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ for (i = 0; i < priv->hw_data->num_rxports; i++) {
if (priv->rxports[i] && !priv->rxports[i]->source.sd) {
dev_dbg(dev, "Waiting for more subdevs to be bound\n");
return 0;
@@ -3728,7 +3719,7 @@ static int ub960_v4l2_notifier_register(struct ub960_data *priv)

v4l2_async_nf_init(&priv->notifier);

- for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ for (i = 0; i < priv->hw_data->num_rxports; i++) {
struct ub960_rxport *rxport = priv->rxports[i];
struct ub960_asd *asd;

@@ -3791,7 +3782,7 @@ static int ub960_create_subdev(struct ub960_data *priv)
priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
priv->sd.entity.ops = &ub960_entity_ops;

- for (i = 0; i < priv->hw_data->num_rxports + priv->hw_data->num_txports; ++i) {
+ for (i = 0; i < priv->hw_data->num_rxports + priv->hw_data->num_txports; i++) {
priv->pads[i].flags = ub960_pad_is_sink(priv, i) ?
MEDIA_PAD_FL_SINK :
MEDIA_PAD_FL_SOURCE;
@@ -4055,7 +4046,7 @@ static int ub960_probe(struct i2c_client *client)

port_mask = 0;

- for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
struct ub960_rxport *rxport = priv->rxports[nport];

if (!rxport)
--
2.34.1