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spi: pl022: Simplify platdata code

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pl022 spi driver support both OF_CONTROL and PLATDATA, this
patch is trying to simplify the code that differentiating
platdata vs of_control.
- Move OF_CONTROL code at one place
- Handle clock setup code directly in pl022_spi_ofdata_to_platdata

Acked-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Jagan Teki 2018-11-14 15:28:05 +05:30
parent 052cafd2a5
commit 3deb1f731d
2 changed files with 20 additions and 35 deletions
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48
drivers/spi/pl022_spi.c
View file

@ -72,11 +72,7 @@
struct pl022_spi_slave {
void *base;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct clk clk;
#else
unsigned int freq;
#endif
};
/*
@ -96,30 +92,13 @@ static int pl022_is_supported(struct pl022_spi_slave *ps)
return 0;
}
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
static int pl022_spi_ofdata_to_platdata(struct udevice *bus)
{
struct pl022_spi_pdata *plat = bus->platdata;
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(bus);
plat->addr = fdtdec_get_addr_size(fdt, node, "reg", &plat->size);
return clk_get_by_index(bus, 0, &plat->clk);
}
#endif
static int pl022_spi_probe(struct udevice *bus)
{
struct pl022_spi_pdata *plat = dev_get_platdata(bus);
struct pl022_spi_slave *ps = dev_get_priv(bus);
ps->base = ioremap(plat->addr, plat->size);
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
ps->clk = plat->clk;
#else
ps->freq = plat->freq;
#endif
/* Check the PL022 version */
if (!pl022_is_supported(ps))
@ -240,11 +219,7 @@ static int pl022_spi_set_speed(struct udevice *bus, uint speed)
u16 scr = SSP_SCR_MIN, cr0 = 0, cpsr = SSP_CPSR_MIN, best_scr = scr,
best_cpsr = cpsr;
u32 min, max, best_freq = 0, tmp;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
u32 rate = clk_get_rate(&ps->clk);
#else
u32 rate = ps->freq;
#endif
bool found = false;
max = spi_rate(rate, SSP_CPSR_MIN, SSP_SCR_MIN);
@ -316,6 +291,25 @@ static const struct dm_spi_ops pl022_spi_ops = {
};
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
static int pl022_spi_ofdata_to_platdata(struct udevice *bus)
{
struct pl022_spi_pdata *plat = bus->platdata;
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(bus);
struct clk clkdev;
int ret;
plat->addr = fdtdec_get_addr_size(fdt, node, "reg", &plat->size);
ret = clk_get_by_index(bus, 0, &clkdev);
if (ret)
return ret;
plat->freq = clk_get_rate(&clkdev);
return 0;
}
static const struct udevice_id pl022_spi_ids[] = {
{ .compatible = "arm,pl022-spi" },
{ }
@ -327,11 +321,9 @@ U_BOOT_DRIVER(pl022_spi) = {
.id = UCLASS_SPI,
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
.of_match = pl022_spi_ids,
#endif
.ops = &pl022_spi_ops,
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
.ofdata_to_platdata = pl022_spi_ofdata_to_platdata,
#endif
.ops = &pl022_spi_ops,
.platdata_auto_alloc_size = sizeof(struct pl022_spi_pdata),
.priv_auto_alloc_size = sizeof(struct pl022_spi_slave),
.probe = pl022_spi_probe,

7
include/dm/platform_data/pl022_spi.h
View file

@ -10,19 +10,12 @@
#ifndef __PL022_SPI_H__
#define __PL022_SPI_H__
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
#include <clk.h>
#endif
#include <fdtdec.h>
struct pl022_spi_pdata {
fdt_addr_t addr;
fdt_size_t size;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct clk clk;
#else
unsigned int freq;
#endif
};
#endif