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authorMike Rapoport <mike@compulab.co.il>2011-04-25 01:09:07 +0300
committerTony Lindgren <tony@atomide.com>2011-05-03 02:53:37 -0700
commit9a3f39ff36e11ea6b6c8b5f90337a864cb7e81f6 (patch)
treebdce8353ab8670fa603d5ace590c2a467df3537d /arch/arm/mach-omap2/common-board-devices.c
parentfbd8071c188e3053fb318d78214e54d4615d93f2 (diff)
omap: move detection of NAND CS to common-board-devices
and reduce amount of copy/paste Signed-off-by: Mike Rapoport <mike@compulab.co.il> CC: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/common-board-devices.c')
-rw-r--r--arch/arm/mach-omap2/common-board-devices.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index cea31dda3a7..e94903b2c65 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -29,6 +29,7 @@
#include <plat/i2c.h>
#include <plat/mcspi.h>
+#include <plat/nand.h>
#include "common-board-devices.h"
@@ -49,6 +50,8 @@ void __init omap_pmic_init(int bus, u32 clkrate,
omap_register_i2c_bus(bus, clkrate, &pmic_i2c_board_info, 1);
}
+#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
+ defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
static struct omap2_mcspi_device_config ads7846_mcspi_config = {
.turbo_mode = 0,
.single_channel = 1, /* 0: slave, 1: master */
@@ -104,3 +107,57 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
spi_register_board_info(&ads7846_spi_board_info, 1);
}
+#else
+void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
+ struct ads7846_platform_data *board_pdata)
+{
+}
+#endif
+
+#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
+static struct omap_nand_platform_data nand_data = {
+ .dma_channel = -1, /* disable DMA in OMAP NAND driver */
+};
+
+void __init omap_nand_flash_init(int options, struct mtd_partition *parts,
+ int nr_parts)
+{
+ u8 cs = 0;
+ u8 nandcs = GPMC_CS_NUM + 1;
+
+ /* find out the chip-select on which NAND exists */
+ while (cs < GPMC_CS_NUM) {
+ u32 ret = 0;
+ ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+ if ((ret & 0xC00) == 0x800) {
+ printk(KERN_INFO "Found NAND on CS%d\n", cs);
+ if (nandcs > GPMC_CS_NUM)
+ nandcs = cs;
+ }
+ cs++;
+ }
+
+ if (nandcs > GPMC_CS_NUM) {
+ printk(KERN_INFO "NAND: Unable to find configuration "
+ "in GPMC\n ");
+ return;
+ }
+
+ if (nandcs < GPMC_CS_NUM) {
+ nand_data.cs = nandcs;
+ nand_data.parts = parts;
+ nand_data.nr_parts = nr_parts;
+ nand_data.options = options;
+
+ printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
+ if (gpmc_nand_init(&nand_data) < 0)
+ printk(KERN_ERR "Unable to register NAND device\n");
+ }
+}
+#else
+void __init omap_nand_flash_init(int options, struct mtd_partition *parts,
+ int nr_parts)
+{
+}
+#endif