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authorSimon Glass <sjg@chromium.org>2016-11-13 14:22:02 -0700
committerSimon Glass <sjg@chromium.org>2016-11-25 17:59:30 -0700
commit6e019c4f288c269c492d732b6b101bde2ca9cc44 (patch)
treef75bdf8e3a6aa0176e506c48394c86fa56a8a6e1 /drivers
parent71634f289de5850503738635cc96753c9b2c5d09 (diff)
rockchip: spi: Add support for of-platdata
Allow this driver to be used with of-platdata on rk3288. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/spi/rk_spi.c36
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/spi/rk_spi.c b/drivers/spi/rk_spi.c
index 105ee4a3ba5..8d642493853 100644
--- a/drivers/spi/rk_spi.c
+++ b/drivers/spi/rk_spi.c
@@ -12,6 +12,7 @@
#include <common.h>
#include <clk.h>
#include <dm.h>
+#include <dt-structs.h>
#include <errno.h>
#include <spi.h>
#include <linux/errno.h>
@@ -27,6 +28,9 @@ DECLARE_GLOBAL_DATA_PTR;
#define DEBUG_RK_SPI 0
struct rockchip_spi_platdata {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct dtd_rockchip_rk3288_spi of_plat;
+#endif
s32 frequency; /* Default clock frequency, -1 for none */
fdt_addr_t base;
uint deactivate_delay_us; /* Delay to wait after deactivate */
@@ -127,9 +131,29 @@ static void spi_cs_deactivate(struct udevice *dev, uint cs)
priv->last_transaction_us = timer_get_us();
}
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+static int conv_of_platdata(struct udevice *dev)
+{
+ struct rockchip_spi_platdata *plat = dev->platdata;
+ struct dtd_rockchip_rk3288_spi *dtplat = &plat->of_plat;
+ struct rockchip_spi_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ plat->base = dtplat->reg[0];
+ plat->frequency = 20000000;
+ ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->clk);
+ if (ret < 0)
+ return ret;
+ dev->req_seq = 0;
+
+ return 0;
+}
+#endif
+
static int rockchip_spi_ofdata_to_platdata(struct udevice *bus)
{
- struct rockchip_spi_platdata *plat = bus->platdata;
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct rockchip_spi_platdata *plat = dev_get_platdata(bus);
struct rockchip_spi_priv *priv = dev_get_priv(bus);
const void *blob = gd->fdt_blob;
int node = bus->of_offset;
@@ -153,6 +177,7 @@ static int rockchip_spi_ofdata_to_platdata(struct udevice *bus)
debug("%s: base=%x, max-frequency=%d, deactivate_delay=%d\n",
__func__, (uint)plat->base, plat->frequency,
plat->deactivate_delay_us);
+#endif
return 0;
}
@@ -164,6 +189,11 @@ static int rockchip_spi_probe(struct udevice *bus)
int ret;
debug("%s: probe\n", __func__);
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ ret = conv_of_platdata(bus);
+ if (ret)
+ return ret;
+#endif
priv->regs = (struct rockchip_spi *)plat->base;
priv->last_transaction_us = timer_get_us();
@@ -369,7 +399,11 @@ static const struct udevice_id rockchip_spi_ids[] = {
};
U_BOOT_DRIVER(rockchip_spi) = {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ .name = "rockchip_rk3288_spi",
+#else
.name = "rockchip_spi",
+#endif
.id = UCLASS_SPI,
.of_match = rockchip_spi_ids,
.ops = &rockchip_spi_ops,