This patch adds driver for the gigabyte devices GD25LQ and GD25Q64B required for Snow Board.
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- drivers/mtd/spi/Makefile | 1 + drivers/mtd/spi/gigadevice.c | 66 ++++++++++++++++++++++++++++++++++ drivers/mtd/spi/spi_flash.c | 3 ++ drivers/mtd/spi/spi_flash_internal.h | 1 + 4 files changed, 71 insertions(+), 0 deletions(-) create mode 100644 drivers/mtd/spi/gigadevice.c
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index 90f8392..0af497d 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -39,6 +39,7 @@ COBJS-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.o COBJS-$(CONFIG_SPI_FLASH_WINBOND) += winbond.o COBJS-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.o COBJS-$(CONFIG_SPI_M95XXX) += eeprom_m95xxx.o +COBJS-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.o
COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/mtd/spi/gigadevice.c b/drivers/mtd/spi/gigadevice.c new file mode 100644 index 0000000..5dbcd19 --- /dev/null +++ b/drivers/mtd/spi/gigadevice.c @@ -0,0 +1,66 @@ +/* + * Gigadevice SPI flash driver + * Copyright 2013, Samsung Electronics Co., Ltd. + * Author: Banajit Goswami banajit.g@samsung.com + * + */ + +#include <common.h> +#include <malloc.h> +#include <spi_flash.h> + +#include "spi_flash_internal.h" + +struct gigadevice_spi_flash_params { + uint16_t id; + uint16_t nr_blocks; + const char *name; +}; + +static const struct gigadevice_spi_flash_params gigadevice_spi_flash_table[] = { + { + .id = 0x6016, + .nr_blocks = 64, + .name = "GD25LQ", + }, + { + .id = 0x4017, + .nr_blocks = 128, + .name = "GD25Q64B", + }, + +}; + + +struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode) +{ + const struct gigadevice_spi_flash_params *params; + struct spi_flash *flash; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(gigadevice_spi_flash_table); i++) { + params = &gigadevice_spi_flash_table[i]; + if (params->id == ((idcode[1] << 8) | idcode[2])) + break; + } + + if (i == ARRAY_SIZE(gigadevice_spi_flash_table)) { + debug("SF: Unsupported Gigadevice ID %02x%02x\n", + idcode[1], idcode[2]); + return NULL; + } + + flash = spi_flash_alloc_base(spi, params->name); + if (!flash) { + debug("SF: Failed to allocate memory\n"); + return NULL; + } + /* Assuming power-of-two page size initially. */ + flash->page_size = 256; + /* sector_size = page_size * pages_per_sector */ + flash->sector_size = flash->page_size * 16; + /* size = sector_size * sector_per_block * number of blocks */ + flash->size = flash->sector_size * 16 * params->nr_blocks; + + return flash; +} diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 17f3d3c..ee05171 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -305,6 +305,9 @@ static const struct { #ifdef CONFIG_SPI_FLASH_EON { 0, 0x1c, spi_flash_probe_eon, }, #endif +#ifdef CONFIG_SPI_FLASH_GIGADEVICE + { 0, 0xc8, spi_flash_probe_gigadevice, }, +#endif #ifdef CONFIG_SPI_FLASH_MACRONIX { 0, 0xc2, spi_flash_probe_macronix, }, #endif diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 141cfa8..e0afbc3 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -106,3 +106,4 @@ struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode); +struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode);