|
|
|
Re: Problem with SPI on S3C2412 | |
| [Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
|
|
Ben,I attach the current patch that I use for my machine. The machine is a SX-560 module from Silex ( http://www.silexeurope.com/en/home/products/embedded-modules/sx-560.html ).
Meanwhile I think I've spotted the (first) problem. In arch/arm/mach-s3c2412/s3c2412.c the SPI device is renamed "s3c2412-spi" (it was set in arch/arm/plat-s3c24xx/devs.c with "s3c2410-spi") but the spi_s3c24xx driver expects a platform driver named "s3c2410-spi", so it fails to initialize. Commenting the driving renaming I get a little bit further:
s3c2410-spi s3c2410-spi.0: No platform data supplied s3c2410-spi: probe of s3c2410-spi.0 failed with error -2 modprobe: failed to load module spi_s3c24xx: No such device Now it seems I need some architecture dependent initialization, correct? Regards, José Gonçalves José Miguel Gonçalves wrote:
Hi,I am trying to setup Linux 2.6.27 on an embedded board with a S3C2412 SoC. After setting some architecture specific configuration on /arch/arm/mach-s3c2412/, I have finally booted my board with success. Now I am trying to access a temperature sensor that is connected to the SPI bus. For this I am thinking to use the spidev userspace API. I have compiled spidev and spi_s3c24xx as modules. I'm able to load spidev but, when I modprobe spi_s3c24xx, I'm getting the following error:modprobe: failed to load module spi_s3c24xx: No such device Any idea of what could be the problem? Regards, José Miguel Gonçalves
diff -Naur linux-2.6.27.38.original/arch/arm/mach-s3c2412/Kconfig linux-2.6.27.38/arch/arm/mach-s3c2412/Kconfig
--- linux-2.6.27.38.original/arch/arm/mach-s3c2412/Kconfig 2009-10-22 08:22:46.000000000 +0100
+++ linux-2.6.27.38/arch/arm/mach-s3c2412/Kconfig 2009-11-04 09:15:46.000000000 +0000
@@ -60,13 +60,10 @@
selected
config MACH_SMDK2412
- bool "SMDK2412"
- select MACH_SMDK2413
+ bool "SX560"
+ select CPU_S3C2412
help
- Say Y here if you are using an SMDK2412
-
- Note, this shares support with SMDK2413, so will automatically
- select MACH_SMDK2413.
+ Say Y here if you are using a Silex SX-560 embedded WLAN module.
config MACH_VSTMS
bool "VMSTMS"
diff -Naur linux-2.6.27.38.original/arch/arm/mach-s3c2412/mach-sx560.c linux-2.6.27.38/arch/arm/mach-s3c2412/mach-sx560.c
--- linux-2.6.27.38.original/arch/arm/mach-s3c2412/mach-sx560.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.27.38/arch/arm/mach-s3c2412/mach-sx560.c 2009-11-04 10:03:27.000000000 +0000
@@ -0,0 +1,135 @@
+/* linux/arch/arm/mach-s3c2412/mach-sx560.c
+ *
+ * Copyright (c) 2009 INOV - INESC Inovacao
+ * Jose Goncalves <jose.goncalves@xxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <asm/hardware/iomd.h>
+#include <asm/setup.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <asm/plat-s3c/regs-serial.h>
+#include <mach/regs-gpio.h>
+
+#include <mach/idle.h>
+
+#include <asm/plat-s3c24xx/s3c2410.h>
+#include <asm/plat-s3c24xx/s3c2412.h>
+#include <asm/plat-s3c24xx/clock.h>
+#include <asm/plat-s3c24xx/devs.h>
+#include <asm/plat-s3c24xx/cpu.h>
+
+static struct map_desc sx560_iodesc[] __initdata = {
+};
+
+static struct s3c2410_uartcfg sx560_uartcfgs[] __initdata = {
+ [0] = {
+ .hwport = 0,
+ .flags = 0,
+ .ucon = 0x3c5,
+ .ulcon = 0x03,
+ .ufcon = 0x51,
+ },
+ [1] = {
+ .hwport = 1,
+ .flags = 0,
+ .ucon = 0x3c5,
+ .ulcon = 0x03,
+ .ufcon = 0x51,
+ },
+ [2] = {
+ .hwport = 2,
+ .flags = 0,
+ .ucon = 0x3c5,
+ .ulcon = 0x03,
+ .ufcon = 0x51,
+ }
+};
+
+static struct platform_device *sx560_devices[] __initdata = {
+ &s3c_device_usb,
+ &s3c_device_wdt,
+ &s3c_device_rtc,
+ &s3c_device_i2c,
+ &s3c_device_spi0,
+ &s3c_device_usbgadget,
+ &s3c_device_sdi,
+};
+
+static void __init sx560_fixup(struct machine_desc *desc,
+ struct tag *tags, char **cmdline,
+ struct meminfo *mi)
+{
+ if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
+ mi->nr_banks=1;
+ mi->bank[0].start = 0x30000000;
+ mi->bank[0].size = SZ_16M;
+ mi->bank[0].node = 0;
+ }
+}
+
+static void __init sx560_map_io(void)
+{
+ s3c24xx_init_io(sx560_iodesc, ARRAY_SIZE(sx560_iodesc));
+ s3c24xx_init_clocks(0);
+ s3c24xx_init_uarts(sx560_uartcfgs, ARRAY_SIZE(sx560_uartcfgs));
+}
+
+static void __init sx560_machine_init(void)
+{
+ /* Configure temperature sensor chip enable pin
+ * as output and disable the sensor */
+ s3c2410_gpio_setpin(S3C2410_GPF3, 0);
+ s3c2410_gpio_cfgpin(S3C2410_GPF3, S3C2410_GPIO_OUTPUT);
+
+ /* Configure SPI0 usage on pins GPE11, 12 and 13 */
+ s3c2410_gpio_cfgpin(S3C2410_GPE13, S3C2410_GPE13_SPICLK0);
+ s3c2410_gpio_cfgpin(S3C2410_GPE12, S3C2410_GPE12_SPIMOSI0);
+ s3c2410_gpio_cfgpin(S3C2410_GPE11, S3C2410_GPE11_SPIMISO0);
+ s3c2410_gpio_pullup(S3C2410_GPE11, 0);
+ s3c2410_gpio_pullup(S3C2410_GPE13, 0);
+
+ /* Turn off suspend for the selectable USB port and
+ * switch it to USB host mode. Turn on suspend for the
+ * host port since it is not connected on the SX-560. */
+ s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+ S3C2410_MISCCR_USBSUSPND0 |
+ S3C2410_MISCCR_USBSUSPND1,
+ S3C2410_MISCCR_USBHOST |
+ S3C2410_MISCCR_USBSUSPND0);
+
+ platform_add_devices(sx560_devices, ARRAY_SIZE(sx560_devices));
+}
+
+MACHINE_START(SMDK2412, "SMDK2412")
+ /* Maintainer: Jose Goncalves <jose.goncalves@xxxxxxx> */
+ .phys_io = S3C2410_PA_UART,
+ .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
+ .boot_params = S3C2410_SDRAM_PA + 0x100,
+
+ .fixup = sx560_fixup,
+ .init_irq = s3c24xx_init_irq,
+ .map_io = sx560_map_io,
+ .init_machine = sx560_machine_init,
+ .timer = &s3c24xx_timer,
+MACHINE_END
diff -Naur linux-2.6.27.38.original/arch/arm/mach-s3c2412/Makefile linux-2.6.27.38/arch/arm/mach-s3c2412/Makefile
--- linux-2.6.27.38.original/arch/arm/mach-s3c2412/Makefile 2009-10-22 08:22:46.000000000 +0100
+++ linux-2.6.27.38/arch/arm/mach-s3c2412/Makefile 2009-11-04 09:15:46.000000000 +0000
@@ -21,3 +21,4 @@
obj-$(CONFIG_MACH_JIVE) += mach-jive.o
obj-$(CONFIG_MACH_SMDK2413) += mach-smdk2413.o
obj-$(CONFIG_MACH_VSTMS) += mach-vstms.o
+obj-$(CONFIG_MACH_SMDK2412) += mach-sx560.o
_______________________________________________ linux-arm mailing list linux-arm@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm
[Linux ARM] [Linux ARM MSM] [Linux ARM Kernel] [Fedora ARM] [IETF Annouce] [Security] [Bugtraq] [Linux] [Linux OMAP] [Linux MIPS] [ECOS] [Asterisk Internet PBX] [Linux API]
|
|