From 44fdbb9d1a3892db92b2c9cf5f46e32ca4095d92 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Fri, 27 Sep 2024 00:19:56 +0300 Subject: [PATCH] media: qcom: camss: add management of supply regulators to CSIPHY This change allows to properly assign and manage supply regulator resources by CSIPHY subdevices of CAMSS, this is needed to fine tune description of supply regulators on newer platforms, conversion of old platforms to the new scheme is also anticipated. Signed-off-by: Vladimir Zapolskiy Tested-by: Depeng Shao # SM8550 Signed-off-by: Hans Verkuil --- .../media/platform/qcom/camss/camss-csiphy.c | 35 ++++++++++++++++++- .../media/platform/qcom/camss/camss-csiphy.h | 2 ++ 2 files changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c index 2f7361dfd4614..68a3ea1ba2a52 100644 --- a/drivers/media/platform/qcom/camss/camss-csiphy.c +++ b/drivers/media/platform/qcom/camss/camss-csiphy.c @@ -212,14 +212,25 @@ static int csiphy_set_power(struct v4l2_subdev *sd, int on) if (ret < 0) return ret; + ret = regulator_bulk_enable(csiphy->num_supplies, + csiphy->supplies); + if (ret < 0) { + pm_runtime_put_sync(dev); + return ret; + } + ret = csiphy_set_clock_rates(csiphy); if (ret < 0) { + regulator_bulk_disable(csiphy->num_supplies, + csiphy->supplies); pm_runtime_put_sync(dev); return ret; } ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev); if (ret < 0) { + regulator_bulk_disable(csiphy->num_supplies, + csiphy->supplies); pm_runtime_put_sync(dev); return ret; } @@ -234,6 +245,8 @@ static int csiphy_set_power(struct v4l2_subdev *sd, int on) camss_disable_clocks(csiphy->nclocks, csiphy->clock); + regulator_bulk_disable(csiphy->num_supplies, csiphy->supplies); + pm_runtime_put_sync(dev); } @@ -676,7 +689,27 @@ int msm_csiphy_subdev_init(struct camss *camss, } } - return 0; + /* CSIPHY supplies */ + for (i = 0; i < ARRAY_SIZE(res->regulators); i++) { + if (res->regulators[i]) + csiphy->num_supplies++; + } + + if (csiphy->num_supplies) { + csiphy->supplies = devm_kmalloc_array(camss->dev, + csiphy->num_supplies, + sizeof(*csiphy->supplies), + GFP_KERNEL); + if (!csiphy->supplies) + return -ENOMEM; + } + + for (i = 0; i < csiphy->num_supplies; i++) + csiphy->supplies[i].supply = res->regulators[i]; + + ret = devm_regulator_bulk_get(camss->dev, csiphy->num_supplies, + csiphy->supplies); + return ret; } /* diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h index 47f0b6b09eba4..eebc1ff1cfabc 100644 --- a/drivers/media/platform/qcom/camss/camss-csiphy.h +++ b/drivers/media/platform/qcom/camss/camss-csiphy.h @@ -91,6 +91,8 @@ struct csiphy_device { bool *rate_set; int nclocks; u32 timer_clk_rate; + struct regulator_bulk_data *supplies; + int num_supplies; struct csiphy_config cfg; struct v4l2_mbus_framefmt fmt[MSM_CSIPHY_PADS_NUM]; const struct csiphy_subdev_resources *res; -- 2.47.3