|
|
|
@ -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, |
|
|
|
|