use the spi-ks8995 driver on the WRT55AG v2 boards
SVN-Revision: 10853
This commit is contained in:
Gabor Juhos
parent
25bd89017f
commit
52383189dc
4 changed files with 170 additions and 0 deletions
53
package/wrt55agv2-spidevs/Makefile
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53
package/wrt55agv2-spidevs/Makefile
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#
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# Copyright (C) 2008 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=wrt55agv2-spidevs
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PKG_RELEASE:=1
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include $(INCLUDE_DIR)/package.mk
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define KernelPackage/wrt55agv2-spidevs
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SUBMENU:=Other modules
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TITLE:=WRT55AG v2 SPI devices support
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DEPENDS:=@LINUX_2_6 @TARGET_atheros +kmod-spi-gpio +kmod-spi-ks8995
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FILES:=$(PKG_BUILD_DIR)/wrt55agv2_spidevs.$(LINUX_KMOD_SUFFIX)
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endef
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define KernelPackage/wrt55agv2-spidevs/description
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Kernel module for the SPI devices on the WRT55AG v2 board.
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endef
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EXTRA_KCONFIG:= \
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CONFIG_WRT55AGV2_SPIDEVS=m
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EXTRA_CFLAGS:= \
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$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
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$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
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MAKE_OPTS:= \
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ARCH="$(LINUX_KARCH)" \
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CROSS_COMPILE="$(TARGET_CROSS)" \
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SUBDIRS="$(PKG_BUILD_DIR)" \
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EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
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LINUXINCLUDE="-I$(LINUX_DIR)/include -include linux/autoconf.h" \
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$(EXTRA_KCONFIG)
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define Build/Prepare
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mkdir -p $(PKG_BUILD_DIR)
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$(CP) ./src/* $(PKG_BUILD_DIR)/
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endef
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define Build/Compile
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$(MAKE) -C "$(LINUX_DIR)" \
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$(MAKE_OPTS) \
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modules
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endef
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$(eval $(call KernelPackage,wrt55agv2-spidevs))
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3
package/wrt55agv2-spidevs/src/Kconfig
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3
package/wrt55agv2-spidevs/src/Kconfig
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config WRT55AGV2_SPIDEVS
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tristate "SPI device support for the WRT55AG v2 board"
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depends on SPI && MIPS_ATHEROS
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1
package/wrt55agv2-spidevs/src/Makefile
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1
package/wrt55agv2-spidevs/src/Makefile
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@ -0,0 +1 @@
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obj-${CONFIG_WRT55AGV2_SPIDEVS} += wrt55agv2_spidevs.o
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113
package/wrt55agv2-spidevs/src/wrt55agv2_spidevs.c
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113
package/wrt55agv2-spidevs/src/wrt55agv2_spidevs.c
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/*
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* SPI driver for the Linksys WRT55AG v2 board.
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*
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* Copyright (C) 2008 Gabor Juhos <juhosg at openwrt.org>
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*
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* This file was based on the mmc_over_gpio driver:
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* Copyright 2008 Michael Buesch <mb@bu3sch.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/platform_device.h>
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#include <linux/spi/spi_gpio.h>
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#define DRV_NAME "wrt55agv2-spidevs"
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#define DRV_DESC "SPI driver for the WRT55AG v2 board"
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#define DRV_VERSION "0.1.0"
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#define PFX DRV_NAME ": "
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#define GPIO_PIN_MISO 1
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#define GPIO_PIN_CS 2
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#define GPIO_PIN_CLK 3
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#define GPIO_PIN_MOSI 4
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static struct platform_device *spi_gpio_dev;
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static int __init boardinfo_setup(struct spi_board_info *bi,
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struct spi_master *master, void *data)
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{
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strlcpy(bi->modalias, "spi-ks8995", sizeof(bi->modalias));
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bi->max_speed_hz = 5000000 /* Hz */;
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bi->bus_num = master->bus_num;
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bi->mode = SPI_MODE_0;
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return 0;
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}
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static int __init wrt55agv2_spidevs_init(void)
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{
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struct spi_gpio_platform_data pdata;
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int err;
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spi_gpio_dev = platform_device_alloc("spi-gpio", 0);
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if (!spi_gpio_dev) {
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printk(KERN_ERR PFX "no memory for spi-gpio device\n");
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return -ENOMEM;
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}
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memset(&pdata, 0, sizeof(pdata));
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pdata.pin_miso = GPIO_PIN_MISO;
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pdata.pin_cs = GPIO_PIN_CS;
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pdata.pin_clk = GPIO_PIN_CLK;
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pdata.pin_mosi = GPIO_PIN_MOSI;
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pdata.cs_activelow = 1;
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pdata.no_spi_delay = 1;
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pdata.boardinfo_setup = boardinfo_setup;
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pdata.boardinfo_setup_data = NULL;
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err = platform_device_add_data(spi_gpio_dev, &pdata, sizeof(pdata));
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if (err)
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goto err_free_dev;
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err = platform_device_register(spi_gpio_dev);
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if (err) {
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printk(KERN_ERR PFX "unable to register device\n");
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goto err_free_pdata;
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}
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return 0;
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err_free_pdata:
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kfree(spi_gpio_dev->dev.platform_data);
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spi_gpio_dev->dev.platform_data = NULL;
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err_free_dev:
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platform_device_put(spi_gpio_dev);
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return err;
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}
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static void __exit wrt55agv2_spidevs_cleanup(void)
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{
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if (!spi_gpio_dev)
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return;
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platform_device_unregister(spi_gpio_dev);
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kfree(spi_gpio_dev->dev.platform_data);
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spi_gpio_dev->dev.platform_data = NULL;
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platform_device_put(spi_gpio_dev);
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}
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static int __init wrt55agv2_spidevs_modinit(void)
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{
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printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
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return wrt55agv2_spidevs_init();
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}
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module_init(wrt55agv2_spidevs_modinit);
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static void __exit wrt55agv2_spidevs_modexit(void)
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{
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wrt55agv2_spidevs_cleanup();
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}
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module_exit(wrt55agv2_spidevs_modexit);
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MODULE_DESCRIPTION(DRV_DESC);
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MODULE_VERSION(DRV_VERSION);
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MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
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MODULE_LICENSE("GPL v2");
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