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SF: Add driver for Gigabyte device GD25LQ and GD25Q64B

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This patch adds driver for the gigabyte devices
GD25LQ and GD25Q64B required for Snow Board.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2013-01-22 20:30:18 +00:00 committed by Minkyu Kang
parent d0a5137313
commit f10b4c0e65
4 changed files with 86 additions and 0 deletions
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1
drivers/mtd/spi/Makefile
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@ -32,6 +32,7 @@ endif
COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o
COBJS-$(CONFIG_SPI_FLASH_ATMEL) += atmel.o
COBJS-$(CONFIG_SPI_FLASH_EON) += eon.o
COBJS-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.o
COBJS-$(CONFIG_SPI_FLASH_MACRONIX) += macronix.o
COBJS-$(CONFIG_SPI_FLASH_SPANSION) += spansion.o
COBJS-$(CONFIG_SPI_FLASH_SST) += sst.o

81
drivers/mtd/spi/gigadevice.c Normal file
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@ -0,0 +1,81 @@
/*
* Gigadevice SPI flash driver
* Copyright 2013, Samsung Electronics Co., Ltd.
* Author: Banajit Goswami <banajit.g@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#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;
}
/* page_size */
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;
}

3
drivers/mtd/spi/spi_flash.c
View File

@ -346,6 +346,9 @@ 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

1
drivers/mtd/spi/spi_flash_internal.h
View File

@ -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);