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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>
This commit is contained in:
Simon Glass 2016-07-04 11:58:35 -06:00
parent fb4baf5d58
commit 086ec0e26d
1 changed files with 39 additions and 1 deletions
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40
arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
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@ -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,