media: qcom: camss: Pass CAMSS subdev callbacks via resource ops pointer

It is possible to pass all of the CAMSS subdevice internal operations
pointers from the controlling resources structure with an additional
pointer added to the resources structure.

This allows for the removal of most of the probe-time control structures.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/qcom/camss/camss-csid.c

@@ -575,18 +575,8 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 
 	csid->camss = camss;
 	csid->id = id;
+	csid->ops = res->ops;
 
-	if (camss->res->version == CAMSS_8x16) {
-		csid->ops = &csid_ops_4_1;
-	} else if (camss->res->version == CAMSS_8x96 ||
-		   camss->res->version == CAMSS_660) {
-		csid->ops = &csid_ops_4_7;
-	} else if (camss->res->version == CAMSS_845 ||
-		   camss->res->version == CAMSS_8250) {
-		csid->ops = &csid_ops_gen2;
-	} else {
-		return -EINVAL;
-	}
 	csid->ops->subdev_init(csid);
 
 	/* Memory */

drivers/media/platform/qcom/camss/camss-csiphy.c

@@ -556,19 +556,17 @@ int msm_csiphy_subdev_init(struct camss *camss,
 	csiphy->camss = camss;
 	csiphy->id = id;
 	csiphy->cfg.combo_mode = 0;
+	csiphy->ops = res->ops;
 
 	if (camss->res->version == CAMSS_8x16) {
-		csiphy->ops = &csiphy_ops_2ph_1_0;
 		csiphy->formats = csiphy_formats_8x16;
 		csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x16);
 	} else if (camss->res->version == CAMSS_8x96 ||
 		   camss->res->version == CAMSS_660) {
-		csiphy->ops = &csiphy_ops_3ph_1_0;
 		csiphy->formats = csiphy_formats_8x96;
 		csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x96);
 	} else if (camss->res->version == CAMSS_845 ||
 		   camss->res->version == CAMSS_8250) {
-		csiphy->ops = &csiphy_ops_3ph_1_0;
 		csiphy->formats = csiphy_formats_sdm845;
 		csiphy->nformats = ARRAY_SIZE(csiphy_formats_sdm845);
 	} else {

drivers/media/platform/qcom/camss/camss-vfe.c

@@ -1286,25 +1286,7 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
 	int i, j;
 	int ret;
 
-	switch (camss->res->version) {
-	case CAMSS_8x16:
-		vfe->ops = &vfe_ops_4_1;
-		break;
-	case CAMSS_8x96:
-		vfe->ops = &vfe_ops_4_7;
-		break;
-	case CAMSS_660:
-		vfe->ops = &vfe_ops_4_8;
-		break;
-	case CAMSS_845:
-		vfe->ops = &vfe_ops_170;
-		break;
-	case CAMSS_8250:
-		vfe->ops = &vfe_ops_480;
-		break;
-	default:
-		return -EINVAL;
-	}
+	vfe->ops = res->ops;
 
 	if (!res->line_num)
 		return -EINVAL;

drivers/media/platform/qcom/camss/camss.h

@@ -49,6 +49,7 @@ struct camss_subdev_resources {
 	char *reg[CAMSS_RES_MAX];
 	char *interrupt[CAMSS_RES_MAX];
 	u8 line_num;
+	const void *ops;
 };
 
 struct icc_bw_tbl {