On 06/16/2015 10:38 AM, Pablo Anton wrote:
This is a preliminary patch in order to add support for ALSA.
It replaces all current i2c access with regmap.
Looks pretty good.
#define ADV76XX_REG(page, offset) (((page) << 8) | (offset))
@@ -633,13 +618,15 @@ 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;
if (!(BIT(page) & state->info->page_mask))
return -EINVAL;
reg &= 0xff;
+ regmap_read(state->regmap[page], reg, &val);
should check return value of regmap_read.
- return adv_smbus_read_byte_data(state, page, reg);
+ return val;
}
#endif
+static int configure_regmap(struct adv76xx_state *state, int region)
+{
+ int err;
+
+ if (!state->i2c_clients[region])
+ return -ENODEV;
+
+ if (!state->regmap[region]) {
+
+ 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 = 0 ; i < ADV76XX_PAGE_MAX; i++) {
The IO page was already initilaized earlier on, so this should start with i
= ADV7604_PAGE_AVLINK.
+ 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)
{
@@ -2683,7 +2815,7 @@ 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 */
@@ -2747,22 +2879,36 @@ 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_info(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);
+ regmap_read(state->regmap[ADV76XX_PAGE_IO], 0xfb, &val);
if (val != 0x68) {
v4l2_info(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) {
+ regmap_read(state->regmap[ADV76XX_PAGE_IO],
+ 0xea,
+ &val);
+ val2 = val << 8;
+ regmap_read(state->regmap[ADV76XX_PAGE_IO],
+ 0xeb,
+ &val);
we should check the return value of regmap_read to make sure the device
responds.
+ val2 |= val;
+ if (val2 != 0x2051) {
v4l2_info(sd, "not an adv7611 on address 0x%x\n",
client->addr << 1);
return -ENODEV;
@@ -2853,6 +2999,11 @@ 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;
--
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