SF: Add driver for Gigabyte device GD25LQ and GD25Q64B

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>

diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile
index 90f83924e2bf23b9ab4c621495ca236c14a19acd..ecbb2108fb368a576b7b85e843dea59942ede4de 100644 (file)
--- a/drivers/mtd/spi/Makefile
+++ b/drivers/mtd/spi/Makefile
@@ -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

diff --git a/drivers/mtd/spi/gigadevice.c b/drivers/mtd/spi/gigadevice.c
new file mode 100644 (file)
index 0000000..b5e1ebe
--- /dev/null
+++ b/drivers/mtd/spi/gigadevice.c
@@ -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;
+}

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 111185af17586900b7ff447ead1e0ea9d131ecc4..6507aa34bb4e82de466fa04eca7e6e303b22fedd 100644 (file)
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -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

diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index 141cfa8b26d75e6e816c7315530854a93035b803..e0afbc3d87ceed5fe74504daa43917017c750b34 100644 (file)
--- 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);