[MTD] [NAND] avr32: atmel_nand platform code for AT32AP700x

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=62090a08aba579e6c69319fac4d4a1f806f26400
Commit:     62090a08aba579e6c69319fac4d4a1f806f26400
Parent:     e1677ce4e41a7c1bbc35a0dee27d5c7e7d223a4b
Author:     Håvard Skinnemoen <haavard.skinnemoen at atmel.com>
AuthorDate: Fri Jun 6 18:04:56 2008 +0200
Committer:  David Woodhouse <dwmw2 at infradead.org>
CommitDate: Sat Jun 7 08:45:36 2008 +0100

    [MTD] [NAND] avr32: atmel_nand platform code for AT32AP700x
    
    This function initializes and adds a platform_device for a NAND flash
    interface on SMC chip select 3.
    
    Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen at atmel.com>
    Signed-off-by: David Woodhouse <dwmw2 at infradead.org>
---
 arch/avr32/mach-at32ap/at32ap700x.c   |   52 +++++++++++++++++++++++++++++++++
 include/asm-avr32/arch-at32ap/board.h |   13 ++++++++
 2 files changed, 65 insertions(+), 0 deletions(-)

diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 0f24b4f..b65d3e0 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -1730,6 +1730,58 @@ fail:
 #endif
 
 /* --------------------------------------------------------------------
+ * NAND Flash / SmartMedia
+ * -------------------------------------------------------------------- */
+static struct resource smc_cs3_resource[] __initdata = {
+	{
+		.start	= 0x0c000000,
+		.end	= 0x0fffffff,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.start	= 0xfff03c00,
+		.end	= 0xfff03fff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device *__init
+at32_add_device_nand(unsigned int id, struct atmel_nand_data *data)
+{
+	struct platform_device *pdev;
+
+	if (id != 0 || !data)
+		return NULL;
+
+	pdev = platform_device_alloc("atmel_nand", id);
+	if (!pdev)
+		goto fail;
+
+	if (platform_device_add_resources(pdev, smc_cs3_resource,
+				ARRAY_SIZE(smc_cs3_resource)))
+		goto fail;
+
+	if (platform_device_add_data(pdev, data,
+				sizeof(struct atmel_nand_data)))
+		goto fail;
+
+	set_ebi_sfr_bits(HMATRIX_BIT(CS3A));
+	if (data->enable_pin)
+		at32_select_gpio(data->enable_pin,
+				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+	if (data->rdy_pin)
+		at32_select_gpio(data->rdy_pin, 0);
+	if (data->det_pin)
+		at32_select_gpio(data->det_pin, 0);
+
+	platform_device_add(pdev);
+	return pdev;
+
+fail:
+	platform_device_put(pdev);
+	return NULL;
+}
+
+/* --------------------------------------------------------------------
  * AC97C
  * -------------------------------------------------------------------- */
 static struct resource atmel_ac97c0_resource[] __initdata = {
diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
index a4e2d28..cc5906c 100644
--- a/include/asm-avr32/arch-at32ap/board.h
+++ b/include/asm-avr32/arch-at32ap/board.h
@@ -85,4 +85,17 @@ struct platform_device *
 at32_add_device_cf(unsigned int id, unsigned int extint,
 		struct cf_platform_data *data);
 
+/* NAND / SmartMedia */
+struct atmel_nand_data {
+	int	enable_pin;	/* chip enable */
+	int	det_pin;	/* card detect */
+	int	rdy_pin;	/* ready/busy */
+	u8	ale;		/* address line number connected to ALE */
+	u8	cle;		/* address line number connected to CLE */
+	u8	bus_width_16;	/* buswidth is 16 bit */
+	struct mtd_partition *(*partition_info)(int size, int *num_partitions);
+};
+struct platform_device *
+at32_add_device_nand(unsigned int id, struct atmel_nand_data *data);
+
 #endif /* __ASM_ARCH_BOARD_H */