media: camss: Add regulator_bulk support

Add the ability to enable or disable multiple regulators in bulk with
camss. This is useful for sm8250, sdm845 and it looks like sdm660 where we
have more than one CSI regulator to do at once.

It should just work for standalone existing vdda regulators and parts which
don't have an explicitly defined CSI regulator.

[hverkuil: fix camss-csid.c:163:13: warning: 'ret' may be used uninitialized in this function]

Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index 97e0dc3..f993f34 100644 (file)
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -160,7 +160,7 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
        struct device *dev = camss->dev;
        struct vfe_device *vfe = &camss->vfe[csid->id];
        u32 version = camss->version;
-       int ret;
+       int ret = 0;
 
        if (on) {
                if (version == CAMSS_8250 || version == CAMSS_845) {
@@ -173,7 +173,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
                if (ret < 0)
                        return ret;
 
-               ret = csid->vdda ? regulator_enable(csid->vdda) : 0;
+               ret = regulator_bulk_enable(csid->num_supplies,
+                                           csid->supplies);
                if (ret < 0) {
                        pm_runtime_put_sync(dev);
                        return ret;
@@ -181,16 +182,16 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
 
                ret = csid_set_clock_rates(csid);
                if (ret < 0) {
-                       if (csid->vdda)
-                               regulator_disable(csid->vdda);
+                       regulator_bulk_disable(csid->num_supplies,
+                                              csid->supplies);
                        pm_runtime_put_sync(dev);
                        return ret;
                }
 
                ret = camss_enable_clocks(csid->nclocks, csid->clock, dev);
                if (ret < 0) {
-                       if (csid->vdda)
-                               regulator_disable(csid->vdda);
+                       regulator_bulk_disable(csid->num_supplies,
+                                              csid->supplies);
                        pm_runtime_put_sync(dev);
                        return ret;
                }
@@ -201,8 +202,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
                if (ret < 0) {
                        disable_irq(csid->irq);
                        camss_disable_clocks(csid->nclocks, csid->clock);
-                       if (csid->vdda)
-                               regulator_disable(csid->vdda);
+                       regulator_bulk_disable(csid->num_supplies,
+                                              csid->supplies);
                        pm_runtime_put_sync(dev);
                        return ret;
                }
@@ -211,7 +212,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
        } else {
                disable_irq(csid->irq);
                camss_disable_clocks(csid->nclocks, csid->clock);
-               ret = csid->vdda ? regulator_disable(csid->vdda) : 0;
+               regulator_bulk_disable(csid->num_supplies,
+                                      csid->supplies);
                pm_runtime_put_sync(dev);
                if (version == CAMSS_8250 || version == CAMSS_845)
                        vfe_put(vfe);
@@ -656,15 +658,28 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
        }
 
        /* Regulator */
+       for (i = 0; i < ARRAY_SIZE(res->regulators); i++) {
+               if (res->regulators[i])
+                       csid->num_supplies++;
+       }
 
-       csid->vdda = NULL;
-       if (res->regulator[0])
-               csid->vdda = devm_regulator_get(dev, res->regulator[0]);
-       if (IS_ERR(csid->vdda)) {
-               dev_err(dev, "could not get regulator\n");
-               return PTR_ERR(csid->vdda);
+       if (csid->num_supplies) {
+               csid->supplies = devm_kmalloc_array(camss->dev,
+                                                   csid->num_supplies,
+                                                   sizeof(csid->supplies),
+                                                   GFP_KERNEL);
+               if (!csid->supplies)
+                       return -ENOMEM;
        }
 
+       for (i = 0; i < csid->num_supplies; i++)
+               csid->supplies[i].supply = res->regulators[i];
+
+       ret = devm_regulator_bulk_get(camss->dev, csid->num_supplies,
+                                     csid->supplies);
+       if (ret)
+               return ret;
+
        init_completion(&csid->reset_complete);
 
        return 0;

diff --git a/drivers/media/platform/qcom/camss/camss-csid.h b/drivers/media/platform/qcom/camss/camss-csid.h
index 17a50fa..f06040e 100644 (file)
--- a/drivers/media/platform/qcom/camss/camss-csid.h
+++ b/drivers/media/platform/qcom/camss/camss-csid.h
@@ -152,7 +152,8 @@ struct csid_device {
        char irq_name[30];
        struct camss_clock *clock;
        int nclocks;
-       struct regulator *vdda;
+       struct regulator_bulk_data *supplies;
+       int num_supplies;
        struct completion reset_complete;
        struct csid_testgen_config testgen;
        struct csid_phy_config phy;

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 04be5e7..81b48ca 100644 (file)
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -34,7 +34,7 @@
 static const struct resources csiphy_res_8x16[] = {
        /* CSIPHY0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer" },
                .clock_rate = { { 0 },
                                { 0 },
@@ -46,7 +46,7 @@ static const struct resources csiphy_res_8x16[] = {
 
        /* CSIPHY1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer" },
                .clock_rate = { { 0 },
                                { 0 },
@@ -60,7 +60,7 @@ static const struct resources csiphy_res_8x16[] = {
 static const struct resources csid_res_8x16[] = {
        /* CSID0 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb",
                           "csi0", "csi0_phy", "csi0_pix", "csi0_rdi" },
                .clock_rate = { { 0 },
@@ -77,7 +77,7 @@ static const struct resources csid_res_8x16[] = {
 
        /* CSID1 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb",
                           "csi1", "csi1_phy", "csi1_pix", "csi1_rdi" },
                .clock_rate = { { 0 },
@@ -107,7 +107,7 @@ static const struct resources_ispif ispif_res_8x16 = {
 static const struct resources vfe_res_8x16[] = {
        /* VFE0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "vfe0", "csi_vfe0",
                           "vfe_ahb", "vfe_axi", "ahb" },
                .clock_rate = { { 0 },
@@ -129,7 +129,7 @@ static const struct resources vfe_res_8x16[] = {
 static const struct resources csiphy_res_8x96[] = {
        /* CSIPHY0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer" },
                .clock_rate = { { 0 },
                                { 0 },
@@ -141,7 +141,7 @@ static const struct resources csiphy_res_8x96[] = {
 
        /* CSIPHY1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer" },
                .clock_rate = { { 0 },
                                { 0 },
@@ -153,7 +153,7 @@ static const struct resources csiphy_res_8x96[] = {
 
        /* CSIPHY2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy2_timer" },
                .clock_rate = { { 0 },
                                { 0 },
@@ -167,7 +167,7 @@ static const struct resources csiphy_res_8x96[] = {
 static const struct resources csid_res_8x96[] = {
        /* CSID0 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb",
                           "csi0", "csi0_phy", "csi0_pix", "csi0_rdi" },
                .clock_rate = { { 0 },
@@ -184,7 +184,7 @@ static const struct resources csid_res_8x96[] = {
 
        /* CSID1 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb",
                           "csi1", "csi1_phy", "csi1_pix", "csi1_rdi" },
                .clock_rate = { { 0 },
@@ -201,7 +201,7 @@ static const struct resources csid_res_8x96[] = {
 
        /* CSID2 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi2_ahb", "ahb",
                           "csi2", "csi2_phy", "csi2_pix", "csi2_rdi" },
                .clock_rate = { { 0 },
@@ -218,7 +218,7 @@ static const struct resources csid_res_8x96[] = {
 
        /* CSID3 */
        {
-               .regulator = { "vdda" },
+               .regulators = { "vdda" },
                .clock = { "top_ahb", "ispif_ahb", "csi3_ahb", "ahb",
                           "csi3", "csi3_phy", "csi3_pix", "csi3_rdi" },
                .clock_rate = { { 0 },
@@ -249,7 +249,7 @@ static const struct resources_ispif ispif_res_8x96 = {
 static const struct resources vfe_res_8x96[] = {
        /* VFE0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ahb", "vfe0", "csi_vfe0", "vfe_ahb",
                           "vfe0_ahb", "vfe_axi", "vfe0_stream"},
                .clock_rate = { { 0 },
@@ -267,7 +267,7 @@ static const struct resources vfe_res_8x96[] = {
 
        /* VFE1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ahb", "vfe1", "csi_vfe1", "vfe_ahb",
                           "vfe1_ahb", "vfe_axi", "vfe1_stream"},
                .clock_rate = { { 0 },
@@ -287,7 +287,7 @@ static const struct resources vfe_res_8x96[] = {
 static const struct resources csiphy_res_660[] = {
        /* CSIPHY0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer",
                           "csi0_phy", "csiphy_ahb2crif" },
                .clock_rate = { { 0 },
@@ -301,7 +301,7 @@ static const struct resources csiphy_res_660[] = {
 
        /* CSIPHY1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer",
                           "csi1_phy", "csiphy_ahb2crif" },
                .clock_rate = { { 0 },
@@ -315,7 +315,7 @@ static const struct resources csiphy_res_660[] = {
 
        /* CSIPHY2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy2_timer",
                           "csi2_phy", "csiphy_ahb2crif" },
                .clock_rate = { { 0 },
@@ -331,7 +331,7 @@ static const struct resources csiphy_res_660[] = {
 static const struct resources csid_res_660[] = {
        /* CSID0 */
        {
-               .regulator = { "vdda", "vdd_sec" },
+               .regulators = { "vdda", "vdd_sec" },
                .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb",
                           "csi0", "csi0_phy", "csi0_pix", "csi0_rdi",
                           "cphy_csid0" },
@@ -351,7 +351,7 @@ static const struct resources csid_res_660[] = {
 
        /* CSID1 */
        {
-               .regulator = { "vdda", "vdd_sec" },
+               .regulators = { "vdda", "vdd_sec" },
                .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb",
                           "csi1", "csi1_phy", "csi1_pix", "csi1_rdi",
                           "cphy_csid1" },
@@ -371,7 +371,7 @@ static const struct resources csid_res_660[] = {
 
        /* CSID2 */
        {
-               .regulator = { "vdda", "vdd_sec" },
+               .regulators = { "vdda", "vdd_sec" },
                .clock = { "top_ahb", "ispif_ahb", "csi2_ahb", "ahb",
                           "csi2", "csi2_phy", "csi2_pix", "csi2_rdi",
                           "cphy_csid2" },
@@ -391,7 +391,7 @@ static const struct resources csid_res_660[] = {
 
        /* CSID3 */
        {
-               .regulator = { "vdda", "vdd_sec" },
+               .regulators = { "vdda", "vdd_sec" },
                .clock = { "top_ahb", "ispif_ahb", "csi3_ahb", "ahb",
                           "csi3", "csi3_phy", "csi3_pix", "csi3_rdi",
                           "cphy_csid3" },
@@ -425,7 +425,7 @@ static const struct resources_ispif ispif_res_660 = {
 static const struct resources vfe_res_660[] = {
        /* VFE0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "throttle_axi", "top_ahb", "ahb", "vfe0",
                           "csi_vfe0", "vfe_ahb", "vfe0_ahb", "vfe_axi",
                           "vfe0_stream"},
@@ -446,7 +446,7 @@ static const struct resources vfe_res_660[] = {
 
        /* VFE1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "throttle_axi", "top_ahb", "ahb", "vfe1",
                           "csi_vfe1", "vfe_ahb", "vfe1_ahb", "vfe_axi",
                           "vfe1_stream"},
@@ -469,7 +469,7 @@ static const struct resources vfe_res_660[] = {
 static const struct resources csiphy_res_845[] = {
        /* CSIPHY0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src",
                                "cpas_ahb", "cphy_rx_src", "csiphy0",
                                "csiphy0_timer_src", "csiphy0_timer" },
@@ -487,7 +487,7 @@ static const struct resources csiphy_res_845[] = {
 
        /* CSIPHY1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src",
                                "cpas_ahb", "cphy_rx_src", "csiphy1",
                                "csiphy1_timer_src", "csiphy1_timer" },
@@ -505,7 +505,7 @@ static const struct resources csiphy_res_845[] = {
 
        /* CSIPHY2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src",
                                "cpas_ahb", "cphy_rx_src", "csiphy2",
                                "csiphy2_timer_src", "csiphy2_timer" },
@@ -523,7 +523,7 @@ static const struct resources csiphy_res_845[] = {
 
        /* CSIPHY3 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src",
                                "cpas_ahb", "cphy_rx_src", "csiphy3",
                                "csiphy3_timer_src", "csiphy3_timer" },
@@ -543,7 +543,7 @@ static const struct resources csiphy_res_845[] = {
 static const struct resources csid_res_845[] = {
        /* CSID0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src",
                                "soc_ahb", "vfe0", "vfe0_src",
                                "vfe0_cphy_rx", "csi0",
@@ -563,7 +563,7 @@ static const struct resources csid_res_845[] = {
 
        /* CSID1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src",
                                "soc_ahb", "vfe1", "vfe1_src",
                                "vfe1_cphy_rx", "csi1",
@@ -583,7 +583,7 @@ static const struct resources csid_res_845[] = {
 
        /* CSID2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src",
                                "soc_ahb", "vfe_lite", "vfe_lite_src",
                                "vfe_lite_cphy_rx", "csi2",
@@ -605,7 +605,7 @@ static const struct resources csid_res_845[] = {
 static const struct resources vfe_res_845[] = {
        /* VFE0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src",
                                "soc_ahb", "vfe0", "vfe0_axi",
                                "vfe0_src", "csi0",
@@ -625,7 +625,7 @@ static const struct resources vfe_res_845[] = {
 
        /* VFE1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src",
                                "soc_ahb", "vfe1", "vfe1_axi",
                                "vfe1_src", "csi1",
@@ -645,7 +645,7 @@ static const struct resources vfe_res_845[] = {
 
        /* VFE-lite */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src",
                                "soc_ahb", "vfe_lite",
                                "vfe_lite_src", "csi2",
@@ -666,7 +666,7 @@ static const struct resources vfe_res_845[] = {
 static const struct resources csiphy_res_8250[] = {
        /* CSIPHY0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy0", "csiphy0_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -675,7 +675,7 @@ static const struct resources csiphy_res_8250[] = {
        },
        /* CSIPHY1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy1", "csiphy1_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -684,7 +684,7 @@ static const struct resources csiphy_res_8250[] = {
        },
        /* CSIPHY2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy2", "csiphy2_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -693,7 +693,7 @@ static const struct resources csiphy_res_8250[] = {
        },
        /* CSIPHY3 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy3", "csiphy3_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -702,7 +702,7 @@ static const struct resources csiphy_res_8250[] = {
        },
        /* CSIPHY4 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy4", "csiphy4_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -711,7 +711,7 @@ static const struct resources csiphy_res_8250[] = {
        },
        /* CSIPHY5 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "csiphy5", "csiphy5_timer" },
                .clock_rate = { { 400000000 },
                                { 300000000 } },
@@ -723,7 +723,7 @@ static const struct resources csiphy_res_8250[] = {
 static const struct resources csid_res_8250[] = {
        /* CSID0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "vfe0_csid", "vfe0_cphy_rx", "vfe0", "vfe0_areg", "vfe0_ahb" },
                .clock_rate = { { 400000000 },
                                { 400000000 },
@@ -735,7 +735,7 @@ static const struct resources csid_res_8250[] = {
        },
        /* CSID1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "vfe1_csid", "vfe1_cphy_rx", "vfe1", "vfe1_areg", "vfe1_ahb" },
                .clock_rate = { { 400000000 },
                                { 400000000 },
@@ -747,7 +747,7 @@ static const struct resources csid_res_8250[] = {
        },
        /* CSID2 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite",  "vfe_lite_ahb" },
                .clock_rate = { { 400000000 },
                                { 400000000 },
@@ -758,7 +758,7 @@ static const struct resources csid_res_8250[] = {
        },
        /* CSID3 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite",  "vfe_lite_ahb" },
                .clock_rate = { { 400000000 },
                                { 400000000 },
@@ -772,7 +772,7 @@ static const struct resources csid_res_8250[] = {
 static const struct resources vfe_res_8250[] = {
        /* VFE0 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb",
                           "camnoc_axi", "vfe0_ahb", "vfe0_areg", "vfe0",
                           "vfe0_axi", "cam_hf_axi" },
@@ -790,7 +790,7 @@ static const struct resources vfe_res_8250[] = {
        },
        /* VFE1 */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb",
                           "camnoc_axi", "vfe1_ahb", "vfe1_areg", "vfe1",
                           "vfe1_axi", "cam_hf_axi" },
@@ -808,7 +808,7 @@ static const struct resources vfe_res_8250[] = {
        },
        /* VFE2 (lite) */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb",
                           "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi",
                           "vfe_lite", "cam_hf_axi" },
@@ -825,7 +825,7 @@ static const struct resources vfe_res_8250[] = {
        },
        /* VFE3 (lite) */
        {
-               .regulator = { NULL },
+               .regulators = { NULL },
                .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb",
                           "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi",
                           "vfe_lite", "cam_hf_axi" },

diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h
index 9c644e6..c9b3e0d 100644 (file)
--- a/drivers/media/platform/qcom/camss/camss.h
+++ b/drivers/media/platform/qcom/camss/camss.h
@@ -42,7 +42,7 @@
 #define CAMSS_RES_MAX 17
 
 struct resources {
-       char *regulator[CAMSS_RES_MAX];
+       char *regulators[CAMSS_RES_MAX];
        char *clock[CAMSS_RES_MAX];
        u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX];
        char *reg[CAMSS_RES_MAX];