define KernelPackage/mmc-spi
SUBMENU:=$(OTHER_MENU)
TITLE:=MMC/SD over SPI Support
- DEPENDS:=@LINUX_2_6
+ DEPENDS:=@LINUX_2_6 +kmod-mmc +kmod-spi +kmod-crc-itu-t +kmod-crc7
KCONFIG:=CONFIG_MMC_SPI
FILES:=$(LINUX_DIR)/drivers/mmc/host/mmc_spi.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,mmc_spi)
define KernelPackage/spi
SUBMENU:=$(OTHER_MENU)
- TITLE:=Serial Peripheral Interface
- DEPENDS:=@LINUX_2_6 +kmod-crc-itu-t +kmod-crc7
- KCONFIG:=CONFIG_SPI=y \
- CONFIG_MTD_DATAFLASH \
- CONFIG_MTD_M25P80 \
- CONFIG_SPI_AT25 \
- CONFIG_SPI_SPIDEV \
- CONFIG_SPI_TLE62X0
- FILES:= \
- $(LINUX_DIR)/drivers/spi/at25.$(LINUX_KMOD_SUFFIX) \
- $(LINUX_DIR)/drivers/spi/spidev.$(LINUX_KMOD_SUFFIX) \
- $(LINUX_DIR)/drivers/spi/tle62x0.$(LINUX_KMOD_SUFFIX) \
- $(LINUX_DIR)/drivers/mtd/devices/m25p80.$(LINUX_KMOD_SUFFIX) \
- $(LINUX_DIR)/drivers/mtd/devices/mtd_dataflash.$(LINUX_KMOD_SUFFIX)
- AUTOLOAD:=$(call AutoLoad,90,spi)
+ TITLE:=Serial Peripheral Interface support
+ DEPENDS:=@LINUX_2_6
+ KCONFIG:=\
+ CONFIG_SPI=y \
+ CONFIG_SPI_MASTER=y
endef
define KernelPackage/spi/description
- This package contains the Serial Peripheral Interface driver
+ This package contains the Serial Peripheral Interface Master driver
endef
$(eval $(call KernelPackage,spi))
define KernelPackage/spi-bitbang
SUBMENU:=$(OTHER_MENU)
- TITLE:=Serial Peripheral Interface bitbanging
+ TITLE:=Serial Peripheral Interface bitbanging library
DEPENDS:=@LINUX_2_6 +kmod-spi
KCONFIG:=CONFIG_SPI_BITBANG
FILES:=$(LINUX_DIR)/drivers/spi/spi_bitbang.$(LINUX_KMOD_SUFFIX)
endef
define KernelPackage/spi-bitbang/description
- This package contains the Serial Peripheral Interface bitbanging library
+ This package contains the SPI bitbanging library
endef
$(eval $(call KernelPackage,spi-bitbang))
+
+define KernelPackage/spi-gpio
+ SUBMENU:=$(OTHER_MENU)
+ TITLE:=GPIO based bitbanging SPI controller
+ DEPENDS:=@LINUX_2_6 +kmod-spi-bitbang
+ KCONFIG:=CONFIG_SPI_GPIO
+ FILES:=$(LINUX_DIR)/drivers/spi/spi_gpio.$(LINUX_KMOD_SUFFIX)
+ AUTOLOAD:=$(call AutoLoad,92,spi_gpio)
+endef
+
+define KernelPackage/spi-gpio/description
+ This package contains the GPIO based bitbanging SPI controller driver
+endef
+
+$(eval $(call KernelPackage,spi-gpio))
+
+define KernelPackage/spi-dev
+ SUBMENU:=$(OTHER_MENU)
+ TITLE:=User mode SPI device driver
+ DEPENDS:=@LINUX_2_6 +kmod-spi
+ KCONFIG:=CONFIG_SPI_SPIDEV
+ FILES:=$(LINUX_DIR)/drivers/spi/spidev.$(LINUX_KMOD_SUFFIX)
+ AUTOLOAD:=$(call AutoLoad,91,spidev)
+endef
+
+define KernelPackage/spi-dev/description
+ This package contains the user mode SPI device driver
+endef
+
+$(eval $(call KernelPackage,spi-dev))
+
-#
+#
# Copyright (C) 2008 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mmc-over-gpio
-PKG_RELEASE:=1
+PKG_RELEASE:=2
include $(INCLUDE_DIR)/package.mk
define KernelPackage/mmc-over-gpio
SUBMENU:=Other modules
- DEPENDS:=@LINUX_2_6 +kmod-spi +kmod-spi-bitbang +kmod-mmc +kmod-mmc-spi @!TARGET_x86
+ DEPENDS:=@LINUX_2_6 +kmod-mmc-spi +kmod-spi-gpio @!TARGET_x86
TITLE:=MMC/SD card over GPIO support
- FILES:=$(PKG_BUILD_DIR)/spi_gpio.$(LINUX_KMOD_SUFFIX) \
- $(PKG_BUILD_DIR)/mmc_over_spigpio.$(LINUX_KMOD_SUFFIX)
- AUTOLOAD:=$(call AutoLoad,92,spi_gpio mmc_over_spigpio)
+ FILES:=$(PKG_BUILD_DIR)/mmc_over_spigpio.$(LINUX_KMOD_SUFFIX)
+ AUTOLOAD:=$(call AutoLoad,93,spi_gpio mmc_over_spigpio)
endef
define KernelPackage/mmc-over-gpio/description
-obj-m += spi_gpio.o
obj-m += mmc_over_spigpio.o
+++ /dev/null
-/*
- * spi_gpio interface to platform code
- *
- * Copyright (c) 2008 Piotr Skamruk
- *
- * 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.
- */
-#ifndef _LINUX_SPI_SPI_GPIO
-#define _LINUX_SPI_SPI_GPIO
-
-#include <linux/types.h>
-#include <linux/spi/spi.h>
-
-
-/** struct spi_gpio_platform_data - Data definitions for a SPI-GPIO device.
- * This structure holds information about a GPIO-based SPI device.
- *
- * @pin_clk: The GPIO pin number of the CLOCK pin.
- *
- * @pin_miso: The GPIO pin number of the MISO pin.
- *
- * @pin_mosi: The GPIO pin number of the MOSI pin.
- *
- * @pin_cs: The GPIO pin number of the CHIPSELECT pin.
- *
- * @cs_activelow: If true, the chip is selected when the CS line is low.
- *
- * @no_spi_delay: If true, no delay is done in the lowlevel bitbanging.
- * Note that doing no delay is not standards compliant,
- * but it might be needed to speed up transfers on some
- * slow embedded machines.
- *
- * @boardinfo_setup: This callback is called after the
- * SPI master device was registered, but before the
- * device is registered.
- * @boardinfo_setup_data: Data argument passed to boardinfo_setup().
- */
-struct spi_gpio_platform_data {
- unsigned int pin_clk;
- unsigned int pin_miso;
- unsigned int pin_mosi;
- unsigned int pin_cs;
- bool cs_activelow;
- bool no_spi_delay;
- int (*boardinfo_setup)(struct spi_board_info *bi,
- struct spi_master *master,
- void *data);
- void *boardinfo_setup_data;
-};
-
-#endif /* _LINUX_SPI_SPI_GPIO */
#include <linux/platform_device.h>
#include <linux/list.h>
#include <linux/mutex.h>
-#include "linux/spi/spi_gpio.h" //XXX
+#include <linux/spi/spi_gpio.h>
/* This is the maximum speed in Hz */
+++ /dev/null
-/*
- * Bitbanging SPI bus driver using GPIO API
- *
- * Copyright (c) 2008 Piotr Skamruk
- * Copyright (c) 2008 Michael Buesch
- *
- * based on spi_s3c2410_gpio.c
- * Copyright (c) 2006 Ben Dooks
- * Copyright (c) 2006 Simtec Electronics
- * and on i2c-gpio.c
- * Copyright (C) 2007 Atmel Corporation
- *
- * 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/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-#include "linux/spi/spi_gpio.h" //XXX
-#include <asm/gpio.h>
-
-
-struct spi_gpio {
- struct spi_bitbang bitbang;
- struct spi_gpio_platform_data *info;
- struct platform_device *pdev;
- struct spi_board_info bi;
-};
-
-
-static inline struct spi_gpio *spidev_to_sg(struct spi_device *dev)
-{
- return dev->controller_data;
-}
-
-static inline void setsck(struct spi_device *dev, int val)
-{
- struct spi_gpio *sp = spidev_to_sg(dev);
- gpio_set_value(sp->info->pin_clk, val ? 1 : 0);
-}
-
-static inline void setmosi(struct spi_device *dev, int val )
-{
- struct spi_gpio *sp = spidev_to_sg(dev);
- gpio_set_value(sp->info->pin_mosi, val ? 1 : 0);
-}
-
-static inline u32 getmiso(struct spi_device *dev)
-{
- struct spi_gpio *sp = spidev_to_sg(dev);
- return gpio_get_value(sp->info->pin_miso) ? 1 : 0;
-}
-
-static inline void do_spidelay(struct spi_device *dev, unsigned nsecs)
-{
- struct spi_gpio *sp = spidev_to_sg(dev);
-
- if (!sp->info->no_spi_delay)
- ndelay(nsecs);
-}
-
-#define spidelay(nsecs) do { \
- /* Steal the spi_device pointer from our caller. \
- * The bitbang-API should probably get fixed here... */ \
- do_spidelay(spi, nsecs); \
- } while (0)
-
-#define EXPAND_BITBANG_TXRX
-#include <linux/spi/spi_bitbang.h>
-
-static u32 spi_gpio_txrx_mode0(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits)
-{
- return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
-}
-
-static u32 spi_gpio_txrx_mode1(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits)
-{
- return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
-}
-
-static u32 spi_gpio_txrx_mode2(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits)
-{
- return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
-}
-
-static u32 spi_gpio_txrx_mode3(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits)
-{
- return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
-}
-
-static void spi_gpio_chipselect(struct spi_device *dev, int on)
-{
- struct spi_gpio *sp = spidev_to_sg(dev);
-
- if (sp->info->cs_activelow)
- on = !on;
- gpio_set_value(sp->info->pin_cs, on ? 1 : 0);
-}
-
-static int spi_gpio_probe(struct platform_device *pdev)
-{
- struct spi_master *master;
- struct spi_gpio_platform_data *pdata;
- struct spi_gpio *sp;
- struct spi_device *spidev;
- int err;
-
- pdata = pdev->dev.platform_data;
- if (!pdata)
- return -ENXIO;
-
- err = -ENOMEM;
- master = spi_alloc_master(&pdev->dev, sizeof(struct spi_gpio));
- if (!master)
- goto err_alloc_master;
-
- sp = spi_master_get_devdata(master);
- platform_set_drvdata(pdev, sp);
- sp->info = pdata;
-
- err = gpio_request(pdata->pin_clk, "spi_clock");
- if (err)
- goto err_request_clk;
- err = gpio_request(pdata->pin_mosi, "spi_mosi");
- if (err)
- goto err_request_mosi;
- err = gpio_request(pdata->pin_miso, "spi_miso");
- if (err)
- goto err_request_miso;
- err = gpio_request(pdata->pin_cs, "spi_cs");
- if (err)
- goto err_request_cs;
-
- sp->bitbang.master = spi_master_get(master);
- sp->bitbang.master->bus_num = -1;
- sp->bitbang.master->num_chipselect = 1;
- sp->bitbang.chipselect = spi_gpio_chipselect;
- sp->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_mode0;
- sp->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_mode1;
- sp->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_mode2;
- sp->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_mode3;
-
- gpio_direction_output(pdata->pin_clk, 0);
- gpio_direction_output(pdata->pin_mosi, 0);
- gpio_direction_output(pdata->pin_cs,
- pdata->cs_activelow ? 1 : 0);
- gpio_direction_input(pdata->pin_miso);
-
- err = spi_bitbang_start(&sp->bitbang);
- if (err)
- goto err_no_bitbang;
- err = pdata->boardinfo_setup(&sp->bi, master,
- pdata->boardinfo_setup_data);
- if (err)
- goto err_bi_setup;
- sp->bi.controller_data = sp;
- spidev = spi_new_device(master, &sp->bi);
- if (!spidev)
- goto err_new_dev;
-
- return 0;
-
-err_new_dev:
-err_bi_setup:
- spi_bitbang_stop(&sp->bitbang);
-err_no_bitbang:
- spi_master_put(sp->bitbang.master);
- gpio_free(pdata->pin_cs);
-err_request_cs:
- gpio_free(pdata->pin_miso);
-err_request_miso:
- gpio_free(pdata->pin_mosi);
-err_request_mosi:
- gpio_free(pdata->pin_clk);
-err_request_clk:
- kfree(master);
-
-err_alloc_master:
- return err;
-}
-
-static int __devexit spi_gpio_remove(struct platform_device *pdev)
-{
- struct spi_gpio *sp;
- struct spi_gpio_platform_data *pdata;
-
- pdata = pdev->dev.platform_data;
- sp = platform_get_drvdata(pdev);
-
- gpio_free(pdata->pin_clk);
- gpio_free(pdata->pin_mosi);
- gpio_free(pdata->pin_miso);
- gpio_free(pdata->pin_cs);
- spi_bitbang_stop(&sp->bitbang);
- spi_master_put(sp->bitbang.master);
-
- return 0;
-}
-
-static struct platform_driver spi_gpio_driver = {
- .driver = {
- .name = "spi-gpio",
- .owner = THIS_MODULE,
- },
- .probe = spi_gpio_probe,
- .remove = __devexit_p(spi_gpio_remove),
-};
-
-static int __init spi_gpio_init(void)
-{
- int err;
-
- err = platform_driver_register(&spi_gpio_driver);
- if (err)
- printk(KERN_ERR "spi-gpio: register failed: %d\n", err);
-
- return err;
-}
-module_init(spi_gpio_init);
-
-static void __exit spi_gpio_exit(void)
-{
- platform_driver_unregister(&spi_gpio_driver);
-}
-module_exit(spi_gpio_exit);
-
-MODULE_AUTHOR("Piot Skamruk <piotr.skamruk at gmail.com>");
-MODULE_AUTHOR("Michael Buesch");
-MODULE_DESCRIPTION("Platform independent GPIO bitbangling SPI driver");
-MODULE_LICENSE("GPL v2");
# CONFIG_MOUSE_PC110PAD is not set
CONFIG_MSDOS_FS=m
CONFIG_MSDOS_PARTITION=y
+# CONFIG_MTD_DATAFLASH is not set
+# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
CONFIG_MTD_ROOTFS_ROOT_DEV=y
# CONFIG_SPARSEMEM_MANUAL is not set
# CONFIG_SPI is not set
# CONFIG_SPI_MASTER is not set
+# CONFIG_SPI_AT25 is not set
+# CONFIG_SPI_TLE62X0 is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_SQUASHFS=y
# CONFIG_SQUASHFS_EMBEDDED is not set
# CONFIG_MOUSE_PC110PAD is not set
CONFIG_MSDOS_FS=m
CONFIG_MSDOS_PARTITION=y
+# CONFIG_MTD_DATAFLASH is not set
+# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_SPARSEMEM_MANUAL is not set
# CONFIG_SPI is not set
# CONFIG_SPI_MASTER is not set
+# CONFIG_SPI_AT25 is not set
+# CONFIG_SPI_TLE62X0 is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_SQUASHFS=y
# CONFIG_SQUASHFS_EMBEDDED is not set
--- /dev/null
+/*
+ * Bitbanging SPI bus driver using GPIO API
+ *
+ * Copyright (c) 2008 Piotr Skamruk
+ * Copyright (c) 2008 Michael Buesch
+ *
+ * based on spi_s3c2410_gpio.c
+ * Copyright (c) 2006 Ben Dooks
+ * Copyright (c) 2006 Simtec Electronics
+ * and on i2c-gpio.c
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * 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/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/spi_bitbang.h>
+#include "linux/spi/spi_gpio.h" //XXX
+#include <asm/gpio.h>
+
+
+struct spi_gpio {
+ struct spi_bitbang bitbang;
+ struct spi_gpio_platform_data *info;
+ struct platform_device *pdev;
+ struct spi_board_info bi;
+};
+
+
+static inline struct spi_gpio *spidev_to_sg(struct spi_device *dev)
+{
+ return dev->controller_data;
+}
+
+static inline void setsck(struct spi_device *dev, int val)
+{
+ struct spi_gpio *sp = spidev_to_sg(dev);
+ gpio_set_value(sp->info->pin_clk, val ? 1 : 0);
+}
+
+static inline void setmosi(struct spi_device *dev, int val )
+{
+ struct spi_gpio *sp = spidev_to_sg(dev);
+ gpio_set_value(sp->info->pin_mosi, val ? 1 : 0);
+}
+
+static inline u32 getmiso(struct spi_device *dev)
+{
+ struct spi_gpio *sp = spidev_to_sg(dev);
+ return gpio_get_value(sp->info->pin_miso) ? 1 : 0;
+}
+
+static inline void do_spidelay(struct spi_device *dev, unsigned nsecs)
+{
+ struct spi_gpio *sp = spidev_to_sg(dev);
+
+ if (!sp->info->no_spi_delay)
+ ndelay(nsecs);
+}
+
+#define spidelay(nsecs) do { \
+ /* Steal the spi_device pointer from our caller. \
+ * The bitbang-API should probably get fixed here... */ \
+ do_spidelay(spi, nsecs); \
+ } while (0)
+
+#define EXPAND_BITBANG_TXRX
+#include <linux/spi/spi_bitbang.h>
+
+static u32 spi_gpio_txrx_mode0(struct spi_device *spi,
+ unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+}
+
+static u32 spi_gpio_txrx_mode1(struct spi_device *spi,
+ unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
+}
+
+static u32 spi_gpio_txrx_mode2(struct spi_device *spi,
+ unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
+}
+
+static u32 spi_gpio_txrx_mode3(struct spi_device *spi,
+ unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
+}
+
+static void spi_gpio_chipselect(struct spi_device *dev, int on)
+{
+ struct spi_gpio *sp = spidev_to_sg(dev);
+
+ if (sp->info->cs_activelow)
+ on = !on;
+ gpio_set_value(sp->info->pin_cs, on ? 1 : 0);
+}
+
+static int spi_gpio_probe(struct platform_device *pdev)
+{
+ struct spi_master *master;
+ struct spi_gpio_platform_data *pdata;
+ struct spi_gpio *sp;
+ struct spi_device *spidev;
+ int err;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata)
+ return -ENXIO;
+
+ err = -ENOMEM;
+ master = spi_alloc_master(&pdev->dev, sizeof(struct spi_gpio));
+ if (!master)
+ goto err_alloc_master;
+
+ sp = spi_master_get_devdata(master);
+ platform_set_drvdata(pdev, sp);
+ sp->info = pdata;
+
+ err = gpio_request(pdata->pin_clk, "spi_clock");
+ if (err)
+ goto err_request_clk;
+ err = gpio_request(pdata->pin_mosi, "spi_mosi");
+ if (err)
+ goto err_request_mosi;
+ err = gpio_request(pdata->pin_miso, "spi_miso");
+ if (err)
+ goto err_request_miso;
+ err = gpio_request(pdata->pin_cs, "spi_cs");
+ if (err)
+ goto err_request_cs;
+
+ sp->bitbang.master = spi_master_get(master);
+ sp->bitbang.master->bus_num = -1;
+ sp->bitbang.master->num_chipselect = 1;
+ sp->bitbang.chipselect = spi_gpio_chipselect;
+ sp->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_mode0;
+ sp->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_mode1;
+ sp->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_mode2;
+ sp->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_mode3;
+
+ gpio_direction_output(pdata->pin_clk, 0);
+ gpio_direction_output(pdata->pin_mosi, 0);
+ gpio_direction_output(pdata->pin_cs,
+ pdata->cs_activelow ? 1 : 0);
+ gpio_direction_input(pdata->pin_miso);
+
+ err = spi_bitbang_start(&sp->bitbang);
+ if (err)
+ goto err_no_bitbang;
+ err = pdata->boardinfo_setup(&sp->bi, master,
+ pdata->boardinfo_setup_data);
+ if (err)
+ goto err_bi_setup;
+ sp->bi.controller_data = sp;
+ spidev = spi_new_device(master, &sp->bi);
+ if (!spidev)
+ goto err_new_dev;
+
+ return 0;
+
+err_new_dev:
+err_bi_setup:
+ spi_bitbang_stop(&sp->bitbang);
+err_no_bitbang:
+ spi_master_put(sp->bitbang.master);
+ gpio_free(pdata->pin_cs);
+err_request_cs:
+ gpio_free(pdata->pin_miso);
+err_request_miso:
+ gpio_free(pdata->pin_mosi);
+err_request_mosi:
+ gpio_free(pdata->pin_clk);
+err_request_clk:
+ kfree(master);
+
+err_alloc_master:
+ return err;
+}
+
+static int __devexit spi_gpio_remove(struct platform_device *pdev)
+{
+ struct spi_gpio *sp;
+ struct spi_gpio_platform_data *pdata;
+
+ pdata = pdev->dev.platform_data;
+ sp = platform_get_drvdata(pdev);
+
+ gpio_free(pdata->pin_clk);
+ gpio_free(pdata->pin_mosi);
+ gpio_free(pdata->pin_miso);
+ gpio_free(pdata->pin_cs);
+ spi_bitbang_stop(&sp->bitbang);
+ spi_master_put(sp->bitbang.master);
+
+ return 0;
+}
+
+static struct platform_driver spi_gpio_driver = {
+ .driver = {
+ .name = "spi-gpio",
+ .owner = THIS_MODULE,
+ },
+ .probe = spi_gpio_probe,
+ .remove = __devexit_p(spi_gpio_remove),
+};
+
+static int __init spi_gpio_init(void)
+{
+ int err;
+
+ err = platform_driver_register(&spi_gpio_driver);
+ if (err)
+ printk(KERN_ERR "spi-gpio: register failed: %d\n", err);
+
+ return err;
+}
+module_init(spi_gpio_init);
+
+static void __exit spi_gpio_exit(void)
+{
+ platform_driver_unregister(&spi_gpio_driver);
+}
+module_exit(spi_gpio_exit);
+
+MODULE_AUTHOR("Piot Skamruk <piotr.skamruk at gmail.com>");
+MODULE_AUTHOR("Michael Buesch");
+MODULE_DESCRIPTION("Platform independent GPIO bitbangling SPI driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * spi_gpio interface to platform code
+ *
+ * Copyright (c) 2008 Piotr Skamruk
+ *
+ * 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.
+ */
+#ifndef _LINUX_SPI_SPI_GPIO
+#define _LINUX_SPI_SPI_GPIO
+
+#include <linux/types.h>
+#include <linux/spi/spi.h>
+
+
+/** struct spi_gpio_platform_data - Data definitions for a SPI-GPIO device.
+ * This structure holds information about a GPIO-based SPI device.
+ *
+ * @pin_clk: The GPIO pin number of the CLOCK pin.
+ *
+ * @pin_miso: The GPIO pin number of the MISO pin.
+ *
+ * @pin_mosi: The GPIO pin number of the MOSI pin.
+ *
+ * @pin_cs: The GPIO pin number of the CHIPSELECT pin.
+ *
+ * @cs_activelow: If true, the chip is selected when the CS line is low.
+ *
+ * @no_spi_delay: If true, no delay is done in the lowlevel bitbanging.
+ * Note that doing no delay is not standards compliant,
+ * but it might be needed to speed up transfers on some
+ * slow embedded machines.
+ *
+ * @boardinfo_setup: This callback is called after the
+ * SPI master device was registered, but before the
+ * device is registered.
+ * @boardinfo_setup_data: Data argument passed to boardinfo_setup().
+ */
+struct spi_gpio_platform_data {
+ unsigned int pin_clk;
+ unsigned int pin_miso;
+ unsigned int pin_mosi;
+ unsigned int pin_cs;
+ bool cs_activelow;
+ bool no_spi_delay;
+ int (*boardinfo_setup)(struct spi_board_info *bi,
+ struct spi_master *master,
+ void *data);
+ void *boardinfo_setup_data;
+};
+
+#endif /* _LINUX_SPI_SPI_GPIO */
--- /dev/null
+Index: linux-2.6.23.16/drivers/spi/Kconfig
+===================================================================
+--- linux-2.6.23.16.orig/drivers/spi/Kconfig
++++ linux-2.6.23.16/drivers/spi/Kconfig
+@@ -100,6 +100,11 @@ config SPI_BUTTERFLY
+ inexpensive battery powered microcontroller evaluation board.
+ This same cable can be used to flash new firmware.
+
++config SPI_GPIO
++ tristate "GPIO API based bitbanging SPI controller"
++ depends on SPI_MASTER && GENERIC_GPIO && EXPERIMENTAL
++ select SPI_BITBANG
++
+ config SPI_IMX
+ tristate "Freescale iMX SPI controller"
+ depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
+Index: linux-2.6.23.16/drivers/spi/Makefile
+===================================================================
+--- linux-2.6.23.16.orig/drivers/spi/Makefile
++++ linux-2.6.23.16/drivers/spi/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.
+ obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
+ obj-$(CONFIG_SPI_AU1550) += au1550_spi.o
+ obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
++obj-$(CONFIG_SPI_GPIO) += spi_gpio.o
+ obj-$(CONFIG_SPI_IMX) += spi_imx.o
+ obj-$(CONFIG_SPI_LM70_LLP) += spi_lm70llp.o
+ obj-$(CONFIG_SPI_PXA2XX) += pxa2xx_spi.o
--- /dev/null
+Index: linux-2.6.23.16/drivers/spi/Kconfig
+===================================================================
+--- linux-2.6.23.16.orig/drivers/spi/Kconfig
++++ linux-2.6.23.16/drivers/spi/Kconfig
+@@ -100,6 +100,11 @@ config SPI_BUTTERFLY
+ inexpensive battery powered microcontroller evaluation board.
+ This same cable can be used to flash new firmware.
+
++config SPI_GPIO
++ tristate "GPIO API based bitbanging SPI controller"
++ depends on SPI_MASTER && GENERIC_GPIO && EXPERIMENTAL
++ select SPI_BITBANG
++
+ config SPI_IMX
+ tristate "Freescale iMX SPI controller"
+ depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
+Index: linux-2.6.23.16/drivers/spi/Makefile
+===================================================================
+--- linux-2.6.23.16.orig/drivers/spi/Makefile
++++ linux-2.6.23.16/drivers/spi/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.
+ obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
+ obj-$(CONFIG_SPI_AU1550) += au1550_spi.o
+ obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
++obj-$(CONFIG_SPI_GPIO) += spi_gpio.o
+ obj-$(CONFIG_SPI_IMX) += spi_imx.o
+ obj-$(CONFIG_SPI_LM70_LLP) += spi_lm70llp.o
+ obj-$(CONFIG_SPI_PXA2XX) += pxa2xx_spi.o
projects / openwrt / staging / yousong.git / commitdiff