Hi Jacopo,
On 11/12/2018 15:16, Jacopo Mondi wrote:
> Re-work the chip reset procedure to configure the CP (HDMI) and SD (AFE) cores
> before resetting the MIPI CSI-2 TXs.
>
> Signed-off-by: Jacopo Mondi <[email protected]>
> ---
> drivers/media/i2c/adv748x/adv748x-core.c | 24 ++++++++++--------------
> 1 file changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/media/i2c/adv748x/adv748x-core.c
> b/drivers/media/i2c/adv748x/adv748x-core.c
> index d94c63cb6a2e..5495dc7891e8 100644
> --- a/drivers/media/i2c/adv748x/adv748x-core.c
> +++ b/drivers/media/i2c/adv748x/adv748x-core.c
> @@ -353,9 +353,8 @@ static const struct adv748x_reg_value adv748x_sw_reset[]
> = {
> {ADV748X_PAGE_EOR, 0xff, 0xff} /* End of register table */
> };
>
> -/* Supported Formats For Script Below */
> -/* - 01-29 HDMI to MIPI TxA CSI 4-Lane - RGB888: */
Is this information redundant ? (CSI-4Lane, RGB888 configuration?)
> -static const struct adv748x_reg_value adv748x_init_txa_4lane[] = {
> +/* Initialize CP Core. */
> +static const struct adv748x_reg_value adv748x_init_hdmi[] = {
While we're here - is there much scope - or value in changing these
tables to functions with parameters using Niklas' adv748x_write_check() ?
The suggestion only has value if there are parameters that we would need
to configure. So it might be reasonable to leave these tables.
A general Ack on renaming to the function instead of the
TX/configuration though - as that makes the purpose clearer.
> /* Disable chip powerdown & Enable HDMI Rx block */
> {ADV748X_PAGE_IO, 0x00, 0x40},
>
> @@ -399,10 +398,8 @@ static const struct adv748x_reg_value
> adv748x_init_txa_4lane[] = {
> {ADV748X_PAGE_EOR, 0xff, 0xff} /* End of register table */
> };
>
> -/* 02-01 Analog CVBS to MIPI TX-B CSI 1-Lane - */
> -/* Autodetect CVBS Single Ended In Ain 1 - MIPI Out */
> -static const struct adv748x_reg_value adv748x_init_txb_1lane[] = {
> -
Same comments as above really :)
> +/* Initialize AFE core. */
> +static const struct adv748x_reg_value adv748x_init_afe[] = {
> {ADV748X_PAGE_IO, 0x00, 0x30}, /* Disable chip powerdown Rx */
> {ADV748X_PAGE_IO, 0xf2, 0x01}, /* Enable I2C Read Auto-Increment */
>
> @@ -445,19 +442,18 @@ static int adv748x_reset(struct adv748x_state *state)
> if (ret < 0)
> return ret;
>
> - /* Init and power down TXA */
> - ret = adv748x_write_regs(state, adv748x_init_txa_4lane);
> + /* Initialize CP and AFE cores. */
> + ret = adv748x_write_regs(state, adv748x_init_hdmi);
> if (ret)
> return ret;
>
> - adv748x_tx_power(&state->txa, 1);
> - adv748x_tx_power(&state->txa, 0);
> -
> - /* Init and power down TXB */
> - ret = adv748x_write_regs(state, adv748x_init_txb_1lane);
> + ret = adv748x_write_regs(state, adv748x_init_afe);
> if (ret)
> return ret;
>
> + /* Reset TXA and TXB */
> + adv748x_tx_power(&state->txa, 1);
> + adv748x_tx_power(&state->txa, 0);
> adv748x_tx_power(&state->txb, 1);
> adv748x_tx_power(&state->txb, 0);
>
> --
> 2.7.4
>
--
Regards
--
Kieran
