Hi Stefan,
Am Donnerstag, 18. Dezember 2014, 14:43:01 schrieb Stefan Hengelein:
> So you actually tested the code I removed in the patch? can you
> provide a configuration that compiles that piece of code?
Yep, one of my boards (Asus eeeReader DR-900) was actually able to transmit
stuff via the libertas spi wifi driver using the s3c64xx-spi driver.
The smdk2416 is currently the only board for the s3c2416 in the kernel. I don't
know if it had actual spi devices connected, but if it had, a suitable diff would
look something like the diff below. Of course hooking up spi devices would
work the same in any out-of-tree board for the supported socs.
For people reading along, the s3c24xx spi distribution is as follows:
s3c2410, s3c2412, s3c2440: (I think) two s3c24xx-spi
s3c2443: one s3c64xx-spi and one s3c24xx-spi
s3c2416: one s3c64xx-spi
s3c2450: two s3c64xx-spi
Heiko
------------ 8< ------------
diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index 9eb2229..5210e5d 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -419,6 +419,8 @@ config MACH_SMDK2416
select S3C_DEV_HSMMC1
select S3C_DEV_NAND
select S3C_DEV_USB_HOST
+ select S3C64XX_DEV_SPI0
+ select S3C2443_SETUP_SPI
help
Say Y here if you are using an SMDK2416
diff --git a/arch/arm/mach-s3c24xx/mach-smdk2416.c b/arch/arm/mach-s3c24xx/mach-smdk2416.c
index 86394f7..b6c6ff4 100644
--- a/arch/arm/mach-s3c24xx/mach-smdk2416.c
+++ b/arch/arm/mach-s3c24xx/mach-smdk2416.c
@@ -52,6 +52,9 @@
#include <linux/platform_data/s3c-hsudc.h>
#include <plat/samsung-time.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_data/spi-s3c64xx.h>
+
#include <plat/fb.h>
#include "common.h"
@@ -207,6 +210,26 @@ static struct s3c_sdhci_platdata smdk2416_hsmmc1_pdata __initdata = {
.cd_type = S3C_SDHCI_CD_NONE,
};
+struct s3c64xx_spi_csinfo libertas_cs_info = {
+ .fb_delay = 0,
+ .line = 128, /* gpio cs line */
+};
+
+
+static struct spi_board_info spi_board_info[] = {
+ {
+ .modalias = "libertas_spi",
+ .max_speed_hz = 1200000,
+ .bus_num = 0,
+ .irq = 12, /* some interrupt number */
+ .chip_select = 0,
+ .mode = SPI_MODE_3,
+ .controller_data = &libertas_cs_info,
+/* .platform_data = &foo1_pdata, */
+ },
+};
+
+
static struct platform_device *smdk2416_devices[] __initdata = {
&s3c_device_fb,
&s3c_device_wdt,
@@ -216,6 +239,7 @@ static struct platform_device *smdk2416_devices[] __initdata = {
&s3c_device_hsmmc1,
&s3c_device_usb_hsudc,
&s3c2443_device_dma,
+ &s3c64xx_device_spi0,
};
static void __init smdk2416_init_time(void)
@@ -250,6 +274,9 @@ static void __init smdk2416_machine_init(void)
gpio_request(S3C2410_GPB(1), "Display Reset");
gpio_direction_output(S3C2410_GPB(1), 1);
+ s3c64xx_spi0_set_platdata(NULL, 0, ARRAY_SIZE(spi_board_info));
+ spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+
platform_add_devices(smdk2416_devices, ARRAY_SIZE(smdk2416_devices));
smdk_machine_init();
}
diff --git a/arch/arm/mach-s3c24xx/setup-spi.c b/arch/arm/mach-s3c24xx/setup-spi.c
index 3d47e02..d66c4e0 100644
--- a/arch/arm/mach-s3c24xx/setup-spi.c
+++ b/arch/arm/mach-s3c24xx/setup-spi.c
@@ -16,6 +16,7 @@
#include <mach/hardware.h>
#include <mach/regs-gpio.h>
+#include <mach/gpio-samsung.h>
#ifdef CONFIG_S3C64XX_DEV_SPI0
int s3c64xx_spi0_cfg_gpio(void)
--
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