On Mon, 28 Aug 2023 at 22:20, Sricharan Ramabadhran
<quic_srichara@xxxxxxxxxxx> wrote:
>
> IPQ5018 has tsens IP V1.0, 4 sensors and 1 interrupt.
> The soc does not have a RPM, hence tsens has to be reset and
> enabled in the driver init. Adding the driver support for same.
>
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@xxxxxxxxxxx>
> ---
> drivers/thermal/qcom/tsens-v1.c | 115 ++++++++++++++++++++++++++++++++
> drivers/thermal/qcom/tsens.h | 2 +-
> 2 files changed, 116 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
> index dc1c4ae2d8b0..a74dae69408b 100644
> --- a/drivers/thermal/qcom/tsens-v1.c
> +++ b/drivers/thermal/qcom/tsens-v1.c
> @@ -42,6 +42,59 @@ static struct tsens_legacy_calibration_format tsens_qcs404_nvmem = {
> },
> };
>
> +struct tsens_legacy_calibration_format tsens_ipq5018_nvmem = {
> + .base_len = 8,
> + .base_shift = 2,
> + .sp_len = 6,
> + .mode = { 0, 8 },
> + .invalid = { 0, 2 },
> + .base = { { 0, 11 }, { 0, 19 } },
> + .sp = {
> + { { 0, 27 }, { 1, 1 } },
> + { { 1, 7 }, { 1, 13 } },
> + { { 1, 19 }, { 1, 25 } },
> + { { 1, 31 }, { 2, 5 } },
> + { { 2, 11 }, { 3, 0 } },
> + },
> +};
> +
> +static void fixup_ipq5018_points(int mode, u32 *p1, u32 *p2)
> +{
> + if (mode == NO_PT_CALIB) {
> + p1[0] = 403;
> + p2[0] = 688;
> + p1[1] = 390;
> + p2[1] = 674;
> + p1[2] = 341;
> + p2[2] = 635;
> + p1[3] = 387;
> + p2[3] = 673;
> + p1[4] = 347;
> + p2[4] = 639;
> + }
> +}
> +
> +static int calibrate_ipq5018(struct tsens_priv *priv)
> +{
> + u32 p1[10], p2[10];
> + u32 *qfprom_cdata;
> + int mode;
> +
> + qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
> + if (IS_ERR(qfprom_cdata))
> + return PTR_ERR(qfprom_cdata);
> +
> + mode = tsens_read_calibration_legacy(priv, &tsens_ipq5018_nvmem,
> + p1, p2,
> + qfprom_cdata, NULL);
No, this should be used only in _legacy_ cases. Please use
tsens_calibrate_common() / tsens_calibrate_nvmem() / etc.
> +
> + fixup_ipq5018_points(mode, p1, p2);
> + compute_intercept_slope(priv, p1, p2, mode);
> + kfree(qfprom_cdata);
> +
> + return 0;
> +}
> +
> static int calibrate_v1(struct tsens_priv *priv)
> {
> u32 p1[10], p2[10];
> @@ -79,6 +132,18 @@ static struct tsens_features tsens_v1_feat = {
> .trip_max_temp = 120000,
> };
>
> +static struct tsens_features tsens_v1_ipq5018_feat = {
> + .ver_major = VER_1_X,
> + .crit_int = 0,
> + .combo_int = 0,
> + .adc = 1,
> + .srot_split = 1,
> + .max_sensors = 11,
> + .trip_min_temp = -40000,
> + .trip_max_temp = 120000,
> + .no_early_init = 1,
> +};
> +
> static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
> /* ----- SROT ------ */
> /* VERSION */
> @@ -150,6 +215,43 @@ static int __init init_8956(struct tsens_priv *priv) {
> return init_common(priv);
> }
>
> +static int init_ipq5018(struct tsens_priv *priv)
> +{
> + int ret;
> + u32 mask;
> +
> + init_common(priv);
> + if (!priv->tm_map)
> + return -ENODEV;
> +
> + ret = regmap_field_write(priv->rf[TSENS_SW_RST], 1);
> + if (ret) {
> + dev_err(priv->dev, "Reset failed\n");
> + return ret;
> + }
> +
> + mask = GENMASK(10, 0);
#define this, then inline the variable. Or extract this codepiece into
generic function which uses num_sensors to calculate the mask
> + ret = regmap_field_update_bits(priv->rf[SENSOR_EN], mask, mask);
> + if (ret) {
> + dev_err(priv->dev, "Sensor Enable failed\n");
> + return ret;
> + }
> +
> + ret = regmap_field_write(priv->rf[TSENS_EN], 1);
> + if (ret) {
> + dev_err(priv->dev, "Enable failed\n");
> + return ret;
> + }
> +
> + ret = regmap_field_write(priv->rf[TSENS_SW_RST], 0);
> + if (ret) {
> + dev_err(priv->dev, "Reset failed\n");
This error message is useless. You can not determine if it comes from
this error or from setting the reset bit.
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> static const struct tsens_ops ops_generic_v1 = {
> .init = init_common,
> .calibrate = calibrate_v1,
> @@ -187,3 +289,16 @@ struct tsens_plat_data data_8976 = {
> .feat = &tsens_v1_feat,
> .fields = tsens_v1_regfields,
> };
> +
> +const struct tsens_ops ops_ipq5018 = {
> + .init = init_ipq5018,
> + .calibrate = calibrate_ipq5018,
> + .get_temp = get_temp_tsens_valid,
> +};
> +
> +struct tsens_plat_data data_ipq5018 = {
> + .num_sensors = 5,
> + .ops = &ops_ipq5018,
> + .feat = &tsens_v1_ipq5018_feat,
> + .fields = tsens_v1_regfields,
> +};
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index fb73e3dd0de9..5f0bdbeedf90 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -645,7 +645,7 @@ extern struct tsens_plat_data data_8960;
> extern struct tsens_plat_data data_8226, data_8909, data_8916, data_8939, data_8974, data_9607;
>
> /* TSENS v1 targets */
> -extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956;
> +extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956, data_ipq5018;
>
> /* TSENS v2 targets */
> extern struct tsens_plat_data data_8996, data_ipq8074, data_tsens_v2;
> --
> 2.34.1
>
--
With best wishes
Dmitry
