From 3feea0ba196ac686090acc48c77cf02b996a8589 Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Wed, 30 Mar 2022 09:33:14 +0200 Subject: [PATCH] spi: spi_flash_probe_bus_cs() rely on DT for spi speed and mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Marek Behun Cc: Jagan Teki Cc: Vignesh R Cc: Joe Hershberger Cc: Ramon Fried Cc: Lukasz Majewski Cc: Marek Vasut Cc: Wolfgang Denk Cc: Simon Glass Cc: Stefan Roese Cc: "Pali Rohár" Cc: Konstantin Porotchkin Cc: Igal Liberman Cc: Bin Meng Cc: Pratyush Yadav Cc: Sean Anderson Cc: Anji J Cc: Biwen Li Cc: Priyanka Jain Cc: Chaitanya Sakinam --- cmd/sf.c | 15 ++++++++++---- drivers/mtd/spi/sf-uclass.c | 33 +++++++++++++++--------------- drivers/net/fm/fm.c | 4 ++-- drivers/net/pfe_eth/pfe_firmware.c | 19 ++++------------- drivers/net/sni_netsec.c | 6 ++---- env/sf.c | 1 - include/spi_flash.h | 1 - 7 files changed, 36 insertions(+), 43 deletions(-) diff --git a/cmd/sf.c b/cmd/sf.c index 8bdebd9fd8..8713736b2a 100644 --- a/cmd/sf.c +++ b/cmd/sf.c @@ -91,6 +91,7 @@ static int do_spi_flash_probe(int argc, char *const argv[]) unsigned int speed = CONFIG_SF_DEFAULT_SPEED; unsigned int mode = CONFIG_SF_DEFAULT_MODE; char *endp; + bool use_dt = true; #if CONFIG_IS_ENABLED(DM_SPI_FLASH) struct udevice *new, *bus_dev; int ret; @@ -117,11 +118,13 @@ static int do_spi_flash_probe(int argc, char *const argv[]) speed = simple_strtoul(argv[2], &endp, 0); if (*argv[2] == 0 || *endp != 0) return -1; + use_dt = false; } if (argc >= 4) { mode = hextoul(argv[3], &endp); if (*argv[3] == 0 || *endp != 0) return -1; + use_dt = false; } #if CONFIG_IS_ENABLED(DM_SPI_FLASH) @@ -131,14 +134,18 @@ static int do_spi_flash_probe(int argc, char *const argv[]) device_remove(new, DM_REMOVE_NORMAL); } flash = NULL; - ret = spi_flash_probe_bus_cs(bus, cs, speed, mode, &new); - if (ret) { + if (use_dt) { + spi_flash_probe_bus_cs(bus, cs, &new); + flash = dev_get_uclass_priv(new); + } else { + flash = spi_flash_probe(bus, cs, speed, mode); + } + + if (!flash) { printf("Failed to initialize SPI flash at %u:%u (error %d)\n", bus, cs, ret); return 1; } - - flash = dev_get_uclass_priv(new); #else if (flash) spi_flash_free(flash); diff --git a/drivers/mtd/spi/sf-uclass.c b/drivers/mtd/spi/sf-uclass.c index b45ba54ebf..e6e650ef8c 100644 --- a/drivers/mtd/spi/sf-uclass.c +++ b/drivers/mtd/spi/sf-uclass.c @@ -46,25 +46,12 @@ int spl_flash_get_sw_write_prot(struct udevice *dev) * TODO(sjg@chromium.org): This is an old-style function. We should remove * it when all SPI flash drivers use dm */ -struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, +struct spi_flash *spi_flash_probe(unsigned int busnum, unsigned int cs, unsigned int max_hz, unsigned int spi_mode) -{ - struct udevice *dev; - - if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev)) - return NULL; - - return dev_get_uclass_priv(dev); -} - -int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, - unsigned int max_hz, unsigned int spi_mode, - struct udevice **devp) { struct spi_slave *slave; struct udevice *bus; char *str; - int ret; #if defined(CONFIG_SPL_BUILD) && CONFIG_IS_ENABLED(USE_TINY_PRINTF) str = "spi_flash"; @@ -74,8 +61,22 @@ int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs); str = strdup(name); #endif - ret = _spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode, - "jedec_spi_nor", str, &bus, &slave); + + 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; diff --git a/drivers/net/fm/fm.c b/drivers/net/fm/fm.c index f825612640..d0b492b5a1 100644 --- a/drivers/net/fm/fm.c +++ b/drivers/net/fm/fm.c @@ -388,7 +388,7 @@ int fm_init_common(int index, struct ccsr_fman *reg) /* speed and mode will be read from DT */ ret = spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, - CONFIG_SF_DEFAULT_CS, 0, 0, &new); + CONFIG_SF_DEFAULT_CS, &new); ucode_flash = dev_get_uclass_priv(new); #else @@ -475,7 +475,7 @@ int fm_init_common(int index, struct ccsr_fman *reg) /* speed and mode will be read from DT */ ret = spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, CONFIG_SF_DEFAULT_CS, - 0, 0, &new); + &new); ucode_flash = dev_get_uclass_priv(new); #else diff --git a/drivers/net/pfe_eth/pfe_firmware.c b/drivers/net/pfe_eth/pfe_firmware.c index 6669048181..82a4aa89a4 100644 --- a/drivers/net/pfe_eth/pfe_firmware.c +++ b/drivers/net/pfe_eth/pfe_firmware.c @@ -172,31 +172,20 @@ static int pfe_fit_check(void) int pfe_spi_flash_init(void) { struct spi_flash *pfe_flash; - struct udevice *new; int ret = 0; void *addr = malloc(CONFIG_SYS_LS_PFE_FW_LENGTH); if (!addr) return -ENOMEM; - ret = spi_flash_probe_bus_cs(CONFIG_SYS_FSL_PFE_SPI_BUS, - CONFIG_SYS_FSL_PFE_SPI_CS, - CONFIG_SYS_FSL_PFE_SPI_MAX_HZ, - CONFIG_SYS_FSL_PFE_SPI_MODE, - &new); - if (ret) { - printf("SF: failed to probe spi\n"); - free(addr); - device_remove(new, DM_REMOVE_NORMAL); - return ret; - } - + pfe_flash = spi_flash_probe(CONFIG_SYS_FSL_PFE_SPI_BUS, + CONFIG_SYS_FSL_PFE_SPI_CS, + CONFIG_SYS_FSL_PFE_SPI_MAX_HZ, + CONFIG_SYS_FSL_PFE_SPI_MODE); - pfe_flash = dev_get_uclass_priv(new); if (!pfe_flash) { printf("SF: probe for pfe failed\n"); free(addr); - device_remove(new, DM_REMOVE_NORMAL); return -ENODEV; } diff --git a/drivers/net/sni_netsec.c b/drivers/net/sni_netsec.c index 24caacf847..9780f2092b 100644 --- a/drivers/net/sni_netsec.c +++ b/drivers/net/sni_netsec.c @@ -621,12 +621,10 @@ static int netsec_stop_gmac(struct netsec_priv *priv) static void netsec_spi_read(char *buf, loff_t len, loff_t offset) { - struct udevice *new; struct spi_flash *flash; - spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, CONFIG_SF_DEFAULT_CS, - CONFIG_SF_DEFAULT_SPEED, CONFIG_SF_DEFAULT_MODE, &new); - flash = dev_get_uclass_priv(new); + flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS, CONFIG_SF_DEFAULT_CS, + CONFIG_SF_DEFAULT_SPEED, CONFIG_SF_DEFAULT_MODE); spi_flash_read(flash, offset, len, buf); } diff --git a/env/sf.c b/env/sf.c index d2c07cd716..4b768542c1 100644 --- a/env/sf.c +++ b/env/sf.c @@ -48,7 +48,6 @@ static int setup_flash_device(struct spi_flash **env_flash) /* speed and mode will be read from DT */ ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, - CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE, &new); if (ret) { env_set_default("spi_flash_probe_bus_cs() failed", 0); diff --git a/include/spi_flash.h b/include/spi_flash.h index d33d0dd46a..10d19fd4b1 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -102,7 +102,6 @@ int spl_flash_get_sw_write_prot(struct udevice *dev); int spi_flash_std_probe(struct udevice *dev); int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, - unsigned int max_hz, unsigned int spi_mode, struct udevice **devp); /* Compatibility function - this is the old U-Boot API */ -- 2.39.5