drm: omapdrm: dss: Select features based on compatible string

Use the compatible string instead of the OMAP SoC revision to determine
device features. The various OMAP3-based SoCs can't be told apart using
the compatible string, use soc_device_match() to tell them apart.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index 7be69b1..06c6e01 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -38,10 +38,12 @@
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 #include <linux/suspend.h>
 #include <linux/component.h>
+#include <linux/sys_soc.h>
 
 #include "omapdss.h"
 #include "dss.h"
@@ -1006,60 +1008,6 @@ static const struct dss_features dra7xx_dss_feats = {
        .ops                    =       &dss_ops_dra7,
 };
 
-static int dss_init_features(struct platform_device *pdev)
-{
-       const struct dss_features *src;
-       struct dss_features *dst;
-
-       dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
-       if (!dst) {
-               dev_err(&pdev->dev, "Failed to allocate local DSS Features\n");
-               return -ENOMEM;
-       }
-
-       switch (omapdss_get_version()) {
-       case OMAPDSS_VER_OMAP24xx:
-               src = &omap24xx_dss_feats;
-               break;
-
-       case OMAPDSS_VER_OMAP34xx_ES1:
-       case OMAPDSS_VER_OMAP34xx_ES3:
-       case OMAPDSS_VER_AM35xx:
-               src = &omap34xx_dss_feats;
-               break;
-
-       case OMAPDSS_VER_OMAP3630:
-               src = &omap3630_dss_feats;
-               break;
-
-       case OMAPDSS_VER_OMAP4430_ES1:
-       case OMAPDSS_VER_OMAP4430_ES2:
-       case OMAPDSS_VER_OMAP4:
-               src = &omap44xx_dss_feats;
-               break;
-
-       case OMAPDSS_VER_OMAP5:
-               src = &omap54xx_dss_feats;
-               break;
-
-       case OMAPDSS_VER_AM43xx:
-               src = &am43xx_dss_feats;
-               break;
-
-       case OMAPDSS_VER_DRA7xx:
-               src = &dra7xx_dss_feats;
-               break;
-
-       default:
-               return -ENODEV;
-       }
-
-       memcpy(dst, src, sizeof(*dst));
-       dss.feat = dst;
-
-       return 0;
-}
-
 static int dss_init_ports(struct platform_device *pdev)
 {
        struct device_node *parent = pdev->dev.of_node;
@@ -1172,18 +1120,42 @@ static int dss_video_pll_probe(struct platform_device *pdev)
 }
 
 /* DSS HW IP initialisation */
+static const struct of_device_id dss_of_match[] = {
+       { .compatible = "ti,omap2-dss", .data = &omap24xx_dss_feats },
+       { .compatible = "ti,omap3-dss", .data = &omap3630_dss_feats },
+       { .compatible = "ti,omap4-dss", .data = &omap44xx_dss_feats },
+       { .compatible = "ti,omap5-dss", .data = &omap54xx_dss_feats },
+       { .compatible = "ti,dra7-dss",  .data = &dra7xx_dss_feats },
+       {},
+};
+MODULE_DEVICE_TABLE(of, dss_of_match);
+
+static const struct soc_device_attribute dss_soc_devices[] = {
+       { .machine = "OMAP3430/3530", .data = &omap34xx_dss_feats },
+       { .machine = "AM35??",        .data = &omap34xx_dss_feats },
+       { .family  = "AM43xx",        .data = &am43xx_dss_feats },
+       { /* sentinel */ }
+};
+
 static int dss_bind(struct device *dev)
 {
        struct platform_device *pdev = to_platform_device(dev);
+       const struct soc_device_attribute *soc;
        struct resource *dss_mem;
        u32 rev;
        int r;
 
        dss.pdev = pdev;
 
-       r = dss_init_features(dss.pdev);
-       if (r)
-               return r;
+       /*
+        * The various OMAP3-based SoCs can't be told apart using the compatible
+        * string, use SoC device matching.
+        */
+       soc = soc_device_match(dss_soc_devices);
+       if (soc)
+               dss.feat = soc->data;
+       else
+               dss.feat = of_match_device(dss_of_match, &pdev->dev)->data;
 
        dss_mem = platform_get_resource(dss.pdev, IORESOURCE_MEM, 0);
        dss.base = devm_ioremap_resource(&pdev->dev, dss_mem);
@@ -1371,17 +1343,6 @@ static const struct dev_pm_ops dss_pm_ops = {
        .runtime_resume = dss_runtime_resume,
 };
 
-static const struct of_device_id dss_of_match[] = {
-       { .compatible = "ti,omap2-dss", },
-       { .compatible = "ti,omap3-dss", },
-       { .compatible = "ti,omap4-dss", },
-       { .compatible = "ti,omap5-dss", },
-       { .compatible = "ti,dra7-dss", },
-       {},
-};
-
-MODULE_DEVICE_TABLE(of, dss_of_match);
-
 static struct platform_driver omap_dsshw_driver = {
        .probe          = dss_probe,
        .remove         = dss_remove,