u-boot/drivers/mtd/spi/sf-uclass.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2014 Google, Inc
*/
#define LOG_CATEGORY UCLASS_SPI_FLASH
#include <common.h>
#include <dm.h>
#include <log.h>
#include <malloc.h>
#include <spi.h>
#include <spi_flash.h>
#include <asm/global_data.h>
#include <dm/device-internal.h>
#include "sf_internal.h"
DECLARE_GLOBAL_DATA_PTR;
int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
{
return log_ret(sf_get_ops(dev)->read(dev, offset, len, buf));
}
int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
const void *buf)
{
return log_ret(sf_get_ops(dev)->write(dev, offset, len, buf));
}
int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
{
return log_ret(sf_get_ops(dev)->erase(dev, offset, len));
}
int spl_flash_get_sw_write_prot(struct udevice *dev)
{
struct dm_spi_flash_ops *ops = sf_get_ops(dev);
if (!ops->get_sw_write_prot)
return -ENOSYS;
return log_ret(ops->get_sw_write_prot(dev));
}
/*
* TODO(sjg@chromium.org): This is an old-style function. We should remove
* it when all SPI flash drivers use dm
*/
spi: spi_flash_probe_bus_cs() rely on DT for spi speed and mode Now, spi_flash_probe_bus_cs() relies on DT for spi speed and mode and logically calls spi_get_bus_and_cs(). In case spi mode and speed are not read from DT, make usage of spi_flash_probe() instead. To sum-up: - Previous call tree was: spi_flash_probe() -> spi_flash_probe_bus_cs() -> spi_get_bus_and_cs() - Current call tree is: spi_flash_probe() -> _spi_get_bus_and_cs() spi_flash_probe_bus_cs() -> spi_get_bus_and_cs() This patch impacts the following : - cmd/sf.c: if spi mode and/or speed is passed in argument of do_spi_flash_probe(), call spi_flash_probe() otherwise call spi_flash_probe_bus_cs(). - drivers/net/fm/fm.c: as by default spi speed and mode was set to 0 and a comment indicates that speed and mode are read from DT, use spi_flash_probe_bus_cs(). - drivers/net/pfe_eth/pfe_firmware.c: spi speed and mode are not read from DT by all platforms using this driver, so keep legacy and replace spi_flash_probe_bus_cs() by spi_flash_probe(); - drivers/net/sni_netsec.c : spi speed and mode are not read from DT, so replace spi_flash_probe_bus_cs() by spi_flash_probe(). - drivers/usb/gadget/max3420_udc.c: Can't find any platform which make usage of this driver, nevertheless, keep legacy and replace spi_get_bus_and_cs() by _spi_get_bus_and_cs(). - env/sf.c: a comment indicates that speed and mode are read from DT. So use spi_flash_probe_bus_cs(). Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Cc: Marek Behun <marek.behun@nic.cz> Cc: Jagan Teki <jagan@amarulasolutions.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Ramon Fried <rfried.dev@gmail.com> Cc: Lukasz Majewski <lukma@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Stefan Roese <sr@denx.de> Cc: "Pali Rohár" <pali@kernel.org> Cc: Konstantin Porotchkin <kostap@marvell.com> Cc: Igal Liberman <igall@marvell.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Pratyush Yadav <p.yadav@ti.com> Cc: Sean Anderson <seanga2@gmail.com> Cc: Anji J <anji.jagarlmudi@nxp.com> Cc: Biwen Li <biwen.li@nxp.com> Cc: Priyanka Jain <priyanka.jain@nxp.com> Cc: Chaitanya Sakinam <chaitanya.sakinam@nxp.com>
2022-03-30 07:33:14 +00:00
struct spi_flash *spi_flash_probe(unsigned int busnum, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode)
{
struct spi_slave *slave;
struct udevice *bus;
char *str;
#if defined(CONFIG_SPL_BUILD) && CONFIG_IS_ENABLED(USE_TINY_PRINTF)
str = "spi_flash";
#else
char name[30];
snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
str = strdup(name);
#endif
spi: spi_flash_probe_bus_cs() rely on DT for spi speed and mode Now, spi_flash_probe_bus_cs() relies on DT for spi speed and mode and logically calls spi_get_bus_and_cs(). In case spi mode and speed are not read from DT, make usage of spi_flash_probe() instead. To sum-up: - Previous call tree was: spi_flash_probe() -> spi_flash_probe_bus_cs() -> spi_get_bus_and_cs() - Current call tree is: spi_flash_probe() -> _spi_get_bus_and_cs() spi_flash_probe_bus_cs() -> spi_get_bus_and_cs() This patch impacts the following : - cmd/sf.c: if spi mode and/or speed is passed in argument of do_spi_flash_probe(), call spi_flash_probe() otherwise call spi_flash_probe_bus_cs(). - drivers/net/fm/fm.c: as by default spi speed and mode was set to 0 and a comment indicates that speed and mode are read from DT, use spi_flash_probe_bus_cs(). - drivers/net/pfe_eth/pfe_firmware.c: spi speed and mode are not read from DT by all platforms using this driver, so keep legacy and replace spi_flash_probe_bus_cs() by spi_flash_probe(); - drivers/net/sni_netsec.c : spi speed and mode are not read from DT, so replace spi_flash_probe_bus_cs() by spi_flash_probe(). - drivers/usb/gadget/max3420_udc.c: Can't find any platform which make usage of this driver, nevertheless, keep legacy and replace spi_get_bus_and_cs() by _spi_get_bus_and_cs(). - env/sf.c: a comment indicates that speed and mode are read from DT. So use spi_flash_probe_bus_cs(). Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Cc: Marek Behun <marek.behun@nic.cz> Cc: Jagan Teki <jagan@amarulasolutions.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Ramon Fried <rfried.dev@gmail.com> Cc: Lukasz Majewski <lukma@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Stefan Roese <sr@denx.de> Cc: "Pali Rohár" <pali@kernel.org> Cc: Konstantin Porotchkin <kostap@marvell.com> Cc: Igal Liberman <igall@marvell.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Pratyush Yadav <p.yadav@ti.com> Cc: Sean Anderson <seanga2@gmail.com> Cc: Anji J <anji.jagarlmudi@nxp.com> Cc: Biwen Li <biwen.li@nxp.com> Cc: Priyanka Jain <priyanka.jain@nxp.com> Cc: Chaitanya Sakinam <chaitanya.sakinam@nxp.com>
2022-03-30 07:33:14 +00:00
if (_spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
"jedec_spi_nor", str, &bus, &slave))
return NULL;
return dev_get_uclass_priv(slave->dev);
}
int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
struct udevice **devp)
{
struct spi_slave *slave;
struct udevice *bus;
int ret;
ret = spi_get_bus_and_cs(busnum, cs, &bus, &slave);
if (ret)
return ret;
*devp = slave->dev;
return 0;
}
static int spi_flash_post_bind(struct udevice *dev)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
struct dm_spi_flash_ops *ops = sf_get_ops(dev);
static int reloc_done;
if (!reloc_done) {
if (ops->read)
ops->read += gd->reloc_off;
if (ops->write)
ops->write += gd->reloc_off;
if (ops->erase)
ops->erase += gd->reloc_off;
reloc_done++;
}
#endif
return 0;
}
UCLASS_DRIVER(spi_flash) = {
.id = UCLASS_SPI_FLASH,
.name = "spi_flash",
.post_bind = spi_flash_post_bind,
.per_device_auto = sizeof(struct spi_nor),
};