On Sat, Sep 24, 2022 at 07:02:57PM +0300, Dmitry Baryshkov wrote:
> SM8250 configuration tables are split into two parts: the common one and
> the PHY-specific tables. Make this split more formal. Rather than having
> a blind renamed copy of all QMP table fields, add separate struct
> qmp_phy_cfg_tables and add two instances of this structure to the struct
> qmp_phy_cfg. Later on this will be used to support different PHY modes
> (RC vs EP).
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
> drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 129 ++++++++++++++---------
> 1 file changed, 77 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> index 7aff3f9940a5..30806816c8b0 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> @@ -1300,31 +1300,30 @@ static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = {
> QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e),
> };
>
> -/* struct qmp_phy_cfg - per-PHY initialization config */
> -struct qmp_phy_cfg {
> - int lanes;
> -
> - /* Init sequence for PHY blocks - serdes, tx, rx, pcs */
> +struct qmp_phy_cfg_tables {
> const struct qmp_phy_init_tbl *serdes_tbl;
> int serdes_tbl_num;
> - const struct qmp_phy_init_tbl *serdes_tbl_sec;
> - int serdes_tbl_num_sec;
> const struct qmp_phy_init_tbl *tx_tbl;
> int tx_tbl_num;
> - const struct qmp_phy_init_tbl *tx_tbl_sec;
> - int tx_tbl_num_sec;
> const struct qmp_phy_init_tbl *rx_tbl;
> int rx_tbl_num;
> - const struct qmp_phy_init_tbl *rx_tbl_sec;
> - int rx_tbl_num_sec;
> const struct qmp_phy_init_tbl *pcs_tbl;
> int pcs_tbl_num;
> - const struct qmp_phy_init_tbl *pcs_tbl_sec;
> - int pcs_tbl_num_sec;
> const struct qmp_phy_init_tbl *pcs_misc_tbl;
> int pcs_misc_tbl_num;
> - const struct qmp_phy_init_tbl *pcs_misc_tbl_sec;
> - int pcs_misc_tbl_num_sec;
> +};
> +
> +/* struct qmp_phy_cfg - per-PHY initialization config */
> +struct qmp_phy_cfg {
> + int lanes;
> +
> + /* Main init sequence for PHY blocks - serdes, tx, rx, pcs */
> + struct qmp_phy_cfg_tables common;
> + /*
> + * Additional init sequence for PHY blocks, providing additional
> + * register programming. Unless required it can be left omitted.
> + */
> + struct qmp_phy_cfg_tables *extra;
>
> /* clock ids to be requested */
> const char * const *clk_list;
> @@ -1949,31 +1974,31 @@ static int qmp_pcie_power_on(struct phy *phy)
> }
>
> /* Tx, Rx, and PCS configurations */
> - qmp_pcie_configure_lane(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num, 1);
> - qmp_pcie_configure_lane(tx, cfg->regs, cfg->tx_tbl_sec, cfg->tx_tbl_num_sec, 1);
> + qmp_pcie_configure_lane(tx, cfg->regs, cfg->common.tx_tbl, cfg->common.tx_tbl_num, 1);
> + qmp_pcie_configure_lane(tx, cfg->regs, cfg->extra->tx_tbl, cfg->extra->tx_tbl_num, 1);
Hmm. How did you test this?
With your later versions of this series, cfg->extra is generally NULL so
this would dereference a NULL pointer.
Johan
