rockchip: sdram: Update the driver to support of-platdata

Add support for of-platdata with rk3288 SDRAM initr. This requires decoding
the of-platdata struct and setting up the device from that. Also the driver
needs to be renamed to match the string that of-platdata will search for.

The platform data is copied from the of-platdata structure to the one used
by the driver. This allows the same code to be used with device tree and
of-platdata.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
index 940ee58..b36b6af 100644 (file)
--- a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <clk.h>
 #include <dm.h>
+#include <dt-structs.h>
 #include <errno.h>
 #include <ram.h>
 #include <regmap.h>
@@ -45,6 +46,9 @@ struct dram_info {
 };
 
 struct rk3288_sdram_params {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+       struct dtd_rockchip_rk3288_dmc of_plat;
+#endif
        struct rk3288_sdram_channel ch[2];
        struct rk3288_sdram_pctl_timing pctl_timing;
        struct rk3288_sdram_phy_timing phy_timing;
@@ -806,6 +810,7 @@ static int setup_sdram(struct udevice *dev)
 
 static int rk3288_dmc_ofdata_to_platdata(struct udevice *dev)
 {
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
        struct rk3288_sdram_params *params = dev_get_platdata(dev);
        const void *blob = gd->fdt_blob;
        int node = dev->of_offset;
@@ -853,11 +858,39 @@ static int rk3288_dmc_ofdata_to_platdata(struct udevice *dev)
        ret = regmap_init_mem(dev, &params->map);
        if (ret)
                return ret;
+#endif
 
        return 0;
 }
 #endif /* CONFIG_SPL_BUILD */
 
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+static int conv_of_platdata(struct udevice *dev)
+{
+       struct rk3288_sdram_params *plat = dev_get_platdata(dev);
+       struct dtd_rockchip_rk3288_dmc *of_plat = &plat->of_plat;
+       int i, ret;
+
+       for (i = 0; i < 2; i++) {
+               memcpy(&plat->ch[i], of_plat->rockchip_sdram_channel,
+                      sizeof(plat->ch[i]));
+       }
+       memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing,
+              sizeof(plat->pctl_timing));
+       memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing,
+              sizeof(plat->phy_timing));
+       memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base));
+       plat->num_channels = of_plat->rockchip_num_channels;
+       ret = regmap_init_mem_platdata(dev, of_plat->reg,
+                                      ARRAY_SIZE(of_plat->reg) / 2,
+                                      &plat->map);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+#endif
+
 static int rk3288_dmc_probe(struct udevice *dev)
 {
 #ifdef CONFIG_SPL_BUILD
@@ -868,6 +901,11 @@ static int rk3288_dmc_probe(struct udevice *dev)
        int ret;
        struct udevice *dev_clk;
 
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+       ret = conv_of_platdata(dev);
+       if (ret)
+               return ret;
+#endif
        map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_NOC);
        if (IS_ERR(map))
                return PTR_ERR(map);
@@ -926,7 +964,7 @@ static const struct udevice_id rk3288_dmc_ids[] = {
 };
 
 U_BOOT_DRIVER(dmc_rk3288) = {
-       .name = "rk3288_dmc",
+       .name = "rockchip_rk3288_dmc",
        .id = UCLASS_RAM,
        .of_match = rk3288_dmc_ids,
        .ops = &rk3288_dmc_ops,