ARM: nomadik: switch over to using the FSMC driver

The Nomadik NAND driver is really just a subset of the existing
FSMC driver, so let's switch over to using that driver instead,
since it handles more variants of this chip. The callbacks for
setting up the chip is doing stuff now handled by the FSMC
driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

diff --git a/arch/arm/configs/nhk8815_defconfig b/arch/arm/configs/nhk8815_defconfig
index 240b25eea56559bb0588af7a048d720c15bb54ed..86cfd2959c47552bb2bcf40bbe630e6e36dce6db 100644 (file)
--- a/arch/arm/configs/nhk8815_defconfig
+++ b/arch/arm/configs/nhk8815_defconfig
@@ -57,7 +57,7 @@ CONFIG_MTD_CHAR=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_NAND=y
 CONFIG_MTD_NAND_ECC_SMC=y
-CONFIG_MTD_NAND_NOMADIK=y
+CONFIG_MTD_NAND_FSMC=y
 CONFIG_MTD_ONENAND=y
 CONFIG_MTD_ONENAND_VERIFY_WRITE=y
 CONFIG_MTD_ONENAND_GENERIC=y

diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
index bfa1eab91f4142cecb3bdd1ce4c4ec1b8e9a9698..a105d1b797585356be65fff6922a7e0e3289fe96 100644 (file)
--- a/arch/arm/mach-nomadik/board-nhk8815.c
+++ b/arch/arm/mach-nomadik/board-nhk8815.c
@@ -19,6 +19,7 @@
 #include <linux/gpio.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
+#include <linux/mtd/fsmc.h>
 #include <linux/mtd/onenand.h>
 #include <linux/mtd/partitions.h>
 #include <linux/i2c.h>
@@ -36,7 +37,6 @@
 #include <plat/mtu.h>
 #include <plat/pincfg.h>
 
-#include <linux/platform_data/mtd-nomadik-nand.h>
 #include <mach/fsmc.h>
 
 #include "cpu-8815.h"
@@ -48,36 +48,18 @@
 /* These addresses span 16MB, so use three individual pages */
 static struct resource nhk8815_nand_resources[] = {
        {
-               .name = "nand_addr",
-               .start = NAND_IO_ADDR,
-               .end = NAND_IO_ADDR + 0xfff,
-               .flags = IORESOURCE_MEM,
-       }, {
-               .name = "nand_cmd",
-               .start = NAND_IO_CMD,
-               .end = NAND_IO_CMD + 0xfff,
+               .name = "nand_data",
+               .start = 0x40000000,
+               .end = 0x40000000 + SZ_16K - 1,
                .flags = IORESOURCE_MEM,
        }, {
-               .name = "nand_data",
-               .start = NAND_IO_DATA,
-               .end = NAND_IO_DATA + 0xfff,
+               .name  = "fsmc_regs",
+               .start = NOMADIK_FSMC_BASE,
+               .end   = NOMADIK_FSMC_BASE + SZ_4K - 1,
                .flags = IORESOURCE_MEM,
-       }
+       },
 };
 
-static int nhk8815_nand_init(void)
-{
-       /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
-       writel(0x0000000E, FSMC_PCR(0));
-       writel(0x000D0A00, FSMC_PMEM(0));
-       writel(0x00100A00, FSMC_PATT(0));
-
-       /* enable access to the chip select area */
-       writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
-
-       return 0;
-}
-
 /*
  * These partitions are the same as those used in the 2.6.20 release
  * shipped by the vendor; the first two partitions are mandated
@@ -111,20 +93,30 @@ static struct mtd_partition nhk8815_partitions[] = {
        }
 };
 
-static struct nomadik_nand_platform_data nhk8815_nand_data = {
-       .parts          = nhk8815_partitions,
-       .nparts         = ARRAY_SIZE(nhk8815_partitions),
-       .options        = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING,
-       .init           = nhk8815_nand_init,
+static struct fsmc_nand_timings nhk8815_nand_timings = {
+       .thiz   = 0,
+       .thold  = 0x10,
+       .twait  = 0x0A,
+       .tset   = 0,
+};
+
+static struct fsmc_nand_platform_data nhk8815_nand_platform_data = {
+       .nand_timings = &nhk8815_nand_timings,
+       .partitions = nhk8815_partitions,
+       .nr_partitions = ARRAY_SIZE(nhk8815_partitions),
+       .width = FSMC_NAND_BW8,
+       .ale_off = 0x1000000,
+       .cle_off = 0x800000,
 };
 
 static struct platform_device nhk8815_nand_device = {
-       .name           = "nomadik_nand",
-       .dev            = {
-               .platform_data = &nhk8815_nand_data,
+       .name = "fsmc-nand",
+       .id = -1,
+       .resource = nhk8815_nand_resources,
+       .num_resources = ARRAY_SIZE(nhk8815_nand_resources),
+       .dev = {
+               .platform_data = &nhk8815_nand_platform_data,
        },
-       .resource       = nhk8815_nand_resources,
-       .num_resources  = ARRAY_SIZE(nhk8815_nand_resources),
 };
 
 /* These are the partitions for the OneNand device, different from above */

diff --git a/arch/arm/mach-nomadik/include/mach/fsmc.h b/arch/arm/mach-nomadik/include/mach/fsmc.h
deleted file mode 100644 (file)
index 8c2c051..0000000
--- a/arch/arm/mach-nomadik/include/mach/fsmc.h
+++ /dev/null
@@ -1,29 +0,0 @@
-
-/* Definitions for the Nomadik FSMC "Flexible Static Memory controller" */
-
-#ifndef __ASM_ARCH_FSMC_H
-#define __ASM_ARCH_FSMC_H
-
-#include <mach/hardware.h>
-/*
- * Register list
- */
-
-/* bus control reg. and bus timing reg. for CS0..CS3 */
-#define FSMC_BCR(x)     (NOMADIK_FSMC_VA + (x << 3))
-#define FSMC_BTR(x)     (NOMADIK_FSMC_VA + (x << 3) + 0x04)
-
-/* PC-card and NAND:
- * PCR = control register
- * PMEM = memory timing
- * PATT = attribute timing
- * PIO = I/O timing
- * PECCR = ECC result
- */
-#define FSMC_PCR(x)     (NOMADIK_FSMC_VA + ((2 + x) << 5) + 0x00)
-#define FSMC_PMEM(x)    (NOMADIK_FSMC_VA + ((2 + x) << 5) + 0x08)
-#define FSMC_PATT(x)    (NOMADIK_FSMC_VA + ((2 + x) << 5) + 0x0c)
-#define FSMC_PIO(x)     (NOMADIK_FSMC_VA + ((2 + x) << 5) + 0x10)
-#define FSMC_PECCR(x)   (NOMADIK_FSMC_VA + ((2 + x) << 5) + 0x14)
-
-#endif /* __ASM_ARCH_FSMC_H */

diff --git a/drivers/clk/clk-nomadik.c b/drivers/clk/clk-nomadik.c
index 517a8ff7121e16da20aecc001ceb0db09fe7245e..6b4c70f7d23d4dfa99b5e566185e9e20b17397bf 100644 (file)
--- a/drivers/clk/clk-nomadik.c
+++ b/drivers/clk/clk-nomadik.c
@@ -20,6 +20,7 @@ void __init nomadik_clk_init(void)
        clk_register_clkdev(clk, NULL, "gpio.2");
        clk_register_clkdev(clk, NULL, "gpio.3");
        clk_register_clkdev(clk, NULL, "rng");
+       clk_register_clkdev(clk, NULL, "fsmc-nand");
 
        /*
         * The 2.4 MHz TIMCLK reference clock is active at boot time, this is