use the spi-ks8995 driver on the WRT55AG v2 boards

SVN-Revision: 10853

package/wrt55agv2-spidevs/Makefile

@@ -0,0 +1,53 @@
+#
+# Copyright (C) 2008 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=wrt55agv2-spidevs
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/wrt55agv2-spidevs
+  SUBMENU:=Other modules
+  TITLE:=WRT55AG v2 SPI devices support
+  DEPENDS:=@LINUX_2_6 @TARGET_atheros +kmod-spi-gpio +kmod-spi-ks8995
+  FILES:=$(PKG_BUILD_DIR)/wrt55agv2_spidevs.$(LINUX_KMOD_SUFFIX)
+endef
+
+define KernelPackage/wrt55agv2-spidevs/description
+  Kernel module for the SPI devices on the WRT55AG v2 board.
+endef
+
+EXTRA_KCONFIG:= \
+	CONFIG_WRT55AGV2_SPIDEVS=m
+
+EXTRA_CFLAGS:= \
+	$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
+	$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
+
+MAKE_OPTS:= \
+	ARCH="$(LINUX_KARCH)" \
+	CROSS_COMPILE="$(TARGET_CROSS)" \
+	SUBDIRS="$(PKG_BUILD_DIR)" \
+	EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
+	LINUXINCLUDE="-I$(LINUX_DIR)/include -include linux/autoconf.h" \
+	$(EXTRA_KCONFIG)
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+	$(MAKE) -C "$(LINUX_DIR)" \
+		$(MAKE_OPTS) \
+		modules
+endef
+
+$(eval $(call KernelPackage,wrt55agv2-spidevs))

package/wrt55agv2-spidevs/src/Kconfig

@@ -0,0 +1,3 @@
+config WRT55AGV2_SPIDEVS
+	tristate "SPI device support for the WRT55AG v2 board"
+	depends on SPI && MIPS_ATHEROS

package/wrt55agv2-spidevs/src/Makefile

@@ -0,0 +1 @@
+obj-${CONFIG_WRT55AGV2_SPIDEVS}	+= wrt55agv2_spidevs.o

package/wrt55agv2-spidevs/src/wrt55agv2_spidevs.c

@@ -0,0 +1,113 @@
+/*
+ * SPI driver for the Linksys WRT55AG v2 board.
+ *
+ * Copyright (C) 2008 Gabor Juhos <juhosg at openwrt.org>
+ *
+ * This file was based on the mmc_over_gpio driver:
+ *	Copyright 2008 Michael Buesch <mb@bu3sch.de>
+ *
+ * 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/platform_device.h>
+#include <linux/spi/spi_gpio.h>
+
+#define DRV_NAME	"wrt55agv2-spidevs"
+#define DRV_DESC	"SPI driver for the WRT55AG v2 board"
+#define DRV_VERSION	"0.1.0"
+#define PFX		DRV_NAME ": "
+
+#define GPIO_PIN_MISO	1
+#define GPIO_PIN_CS	2
+#define GPIO_PIN_CLK	3
+#define GPIO_PIN_MOSI	4
+
+static struct platform_device *spi_gpio_dev;
+
+static int __init boardinfo_setup(struct spi_board_info *bi,
+		struct spi_master *master, void *data)
+{
+
+	strlcpy(bi->modalias, "spi-ks8995", sizeof(bi->modalias));
+
+	bi->max_speed_hz = 5000000 /* Hz */;
+	bi->bus_num = master->bus_num;
+	bi->mode = SPI_MODE_0;
+
+	return 0;
+}
+
+static int __init wrt55agv2_spidevs_init(void)
+{
+	struct spi_gpio_platform_data pdata;
+	int err;
+
+	spi_gpio_dev = platform_device_alloc("spi-gpio", 0);
+	if (!spi_gpio_dev) {
+		printk(KERN_ERR PFX "no memory for spi-gpio device\n");
+		return -ENOMEM;
+	}
+
+	memset(&pdata, 0, sizeof(pdata));
+	pdata.pin_miso = GPIO_PIN_MISO;
+	pdata.pin_cs = GPIO_PIN_CS;
+	pdata.pin_clk = GPIO_PIN_CLK;
+	pdata.pin_mosi = GPIO_PIN_MOSI;
+	pdata.cs_activelow = 1;
+	pdata.no_spi_delay = 1;
+	pdata.boardinfo_setup = boardinfo_setup;
+	pdata.boardinfo_setup_data = NULL;
+
+	err = platform_device_add_data(spi_gpio_dev, &pdata, sizeof(pdata));
+	if (err)
+		goto err_free_dev;
+
+	err = platform_device_register(spi_gpio_dev);
+	if (err) {
+		printk(KERN_ERR PFX "unable to register device\n");
+		goto err_free_pdata;
+	}
+
+	return 0;
+
+err_free_pdata:
+	kfree(spi_gpio_dev->dev.platform_data);
+	spi_gpio_dev->dev.platform_data = NULL;
+
+err_free_dev:
+	platform_device_put(spi_gpio_dev);
+	return err;
+}
+
+static void __exit wrt55agv2_spidevs_cleanup(void)
+{
+	if (!spi_gpio_dev)
+		return;
+
+	platform_device_unregister(spi_gpio_dev);
+
+	kfree(spi_gpio_dev->dev.platform_data);
+	spi_gpio_dev->dev.platform_data = NULL;
+	platform_device_put(spi_gpio_dev);
+}
+
+static int __init wrt55agv2_spidevs_modinit(void)
+{
+	printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
+	return wrt55agv2_spidevs_init();
+}
+module_init(wrt55agv2_spidevs_modinit);
+
+static void __exit wrt55agv2_spidevs_modexit(void)
+{
+	wrt55agv2_spidevs_cleanup();
+}
+module_exit(wrt55agv2_spidevs_modexit);
+
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
+MODULE_LICENSE("GPL v2");
+