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authorGrant Likely <grant.likely@secretlab.ca>2011-06-06 11:16:30 +0400
committerGrant Likely <grant.likely@secretlab.ca>2011-06-06 11:16:30 +0400
commitca632f556697d45d67ed5cada7cedf3ddfe0db4b (patch)
treef393534b929abb32813ea5c495f1ac6d93a10d1d /drivers/spi/spi_s3c24xx.c
parent8c99268431a117207a89be5167ecd69429fd4bda (diff)
downloadlinux-ca632f556697d45d67ed5cada7cedf3ddfe0db4b.tar.xz
spi: reorganize drivers
Sort the SPI makefile and enforce the naming convention spi_*.c for spi drivers. This change also rolls the contents of atmel_spi.h into the .c file since there is only one user of that particular include file. v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be be the predominant pattern for subsystem prefixes. - Clean up filenames in Kconfig and header comment blocks Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/spi/spi_s3c24xx.c')
-rw-r--r--drivers/spi/spi_s3c24xx.c746
1 files changed, 0 insertions, 746 deletions
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
deleted file mode 100644
index 1a5fcabfd565..000000000000
--- a/drivers/spi/spi_s3c24xx.c
+++ /dev/null
@@ -1,746 +0,0 @@
-/* linux/drivers/spi/spi_s3c24xx.c
- *
- * Copyright (c) 2006 Ben Dooks
- * Copyright 2006-2009 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- *
- * 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/init.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-
-#include <plat/regs-spi.h>
-#include <mach/spi.h>
-
-#include <plat/fiq.h>
-#include <asm/fiq.h>
-
-#include "spi_s3c24xx_fiq.h"
-
-/**
- * s3c24xx_spi_devstate - per device data
- * @hz: Last frequency calculated for @sppre field.
- * @mode: Last mode setting for the @spcon field.
- * @spcon: Value to write to the SPCON register.
- * @sppre: Value to write to the SPPRE register.
- */
-struct s3c24xx_spi_devstate {
- unsigned int hz;
- unsigned int mode;
- u8 spcon;
- u8 sppre;
-};
-
-enum spi_fiq_mode {
- FIQ_MODE_NONE = 0,
- FIQ_MODE_TX = 1,
- FIQ_MODE_RX = 2,
- FIQ_MODE_TXRX = 3,
-};
-
-struct s3c24xx_spi {
- /* bitbang has to be first */
- struct spi_bitbang bitbang;
- struct completion done;
-
- void __iomem *regs;
- int irq;
- int len;
- int count;
-
- struct fiq_handler fiq_handler;
- enum spi_fiq_mode fiq_mode;
- unsigned char fiq_inuse;
- unsigned char fiq_claimed;
-
- void (*set_cs)(struct s3c2410_spi_info *spi,
- int cs, int pol);
-
- /* data buffers */
- const unsigned char *tx;
- unsigned char *rx;
-
- struct clk *clk;
- struct resource *ioarea;
- struct spi_master *master;
- struct spi_device *curdev;
- struct device *dev;
- struct s3c2410_spi_info *pdata;
-};
-
-
-#define SPCON_DEFAULT (S3C2410_SPCON_MSTR | S3C2410_SPCON_SMOD_INT)
-#define SPPIN_DEFAULT (S3C2410_SPPIN_KEEP)
-
-static inline struct s3c24xx_spi *to_hw(struct spi_device *sdev)
-{
- return spi_master_get_devdata(sdev->master);
-}
-
-static void s3c24xx_spi_gpiocs(struct s3c2410_spi_info *spi, int cs, int pol)
-{
- gpio_set_value(spi->pin_cs, pol);
-}
-
-static void s3c24xx_spi_chipsel(struct spi_device *spi, int value)
-{
- struct s3c24xx_spi_devstate *cs = spi->controller_state;
- struct s3c24xx_spi *hw = to_hw(spi);
- unsigned int cspol = spi->mode & SPI_CS_HIGH ? 1 : 0;
-
- /* change the chipselect state and the state of the spi engine clock */
-
- switch (value) {
- case BITBANG_CS_INACTIVE:
- hw->set_cs(hw->pdata, spi->chip_select, cspol^1);
- writeb(cs->spcon, hw->regs + S3C2410_SPCON);
- break;
-
- case BITBANG_CS_ACTIVE:
- writeb(cs->spcon | S3C2410_SPCON_ENSCK,
- hw->regs + S3C2410_SPCON);
- hw->set_cs(hw->pdata, spi->chip_select, cspol);
- break;
- }
-}
-
-static int s3c24xx_spi_update_state(struct spi_device *spi,
- struct spi_transfer *t)
-{
- struct s3c24xx_spi *hw = to_hw(spi);
- struct s3c24xx_spi_devstate *cs = spi->controller_state;
- unsigned int bpw;
- unsigned int hz;
- unsigned int div;
- unsigned long clk;
-
- bpw = t ? t->bits_per_word : spi->bits_per_word;
- hz = t ? t->speed_hz : spi->max_speed_hz;
-
- if (!bpw)
- bpw = 8;
-
- if (!hz)
- hz = spi->max_speed_hz;
-
- if (bpw != 8) {
- dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);
- return -EINVAL;
- }
-
- if (spi->mode != cs->mode) {
- u8 spcon = SPCON_DEFAULT | S3C2410_SPCON_ENSCK;
-
- if (spi->mode & SPI_CPHA)
- spcon |= S3C2410_SPCON_CPHA_FMTB;
-
- if (spi->mode & SPI_CPOL)
- spcon |= S3C2410_SPCON_CPOL_HIGH;
-
- cs->mode = spi->mode;
- cs->spcon = spcon;
- }
-
- if (cs->hz != hz) {
- clk = clk_get_rate(hw->clk);
- div = DIV_ROUND_UP(clk, hz * 2) - 1;
-
- if (div > 255)
- div = 255;
-
- dev_dbg(&spi->dev, "pre-scaler=%d (wanted %d, got %ld)\n",
- div, hz, clk / (2 * (div + 1)));
-
- cs->hz = hz;
- cs->sppre = div;
- }
-
- return 0;
-}
-
-static int s3c24xx_spi_setupxfer(struct spi_device *spi,
- struct spi_transfer *t)
-{
- struct s3c24xx_spi_devstate *cs = spi->controller_state;
- struct s3c24xx_spi *hw = to_hw(spi);
- int ret;
-
- ret = s3c24xx_spi_update_state(spi, t);
- if (!ret)
- writeb(cs->sppre, hw->regs + S3C2410_SPPRE);
-
- return ret;
-}
-
-static int s3c24xx_spi_setup(struct spi_device *spi)
-{
- struct s3c24xx_spi_devstate *cs = spi->controller_state;
- struct s3c24xx_spi *hw = to_hw(spi);
- int ret;
-
- /* allocate settings on the first call */
- if (!cs) {
- cs = kzalloc(sizeof(struct s3c24xx_spi_devstate), GFP_KERNEL);
- if (!cs) {
- dev_err(&spi->dev, "no memory for controller state\n");
- return -ENOMEM;
- }
-
- cs->spcon = SPCON_DEFAULT;
- cs->hz = -1;
- spi->controller_state = cs;
- }
-
- /* initialise the state from the device */
- ret = s3c24xx_spi_update_state(spi, NULL);
- if (ret)
- return ret;
-
- spin_lock(&hw->bitbang.lock);
- if (!hw->bitbang.busy) {
- hw->bitbang.chipselect(spi, BITBANG_CS_INACTIVE);
- /* need to ndelay for 0.5 clocktick ? */
- }
- spin_unlock(&hw->bitbang.lock);
-
- return 0;
-}
-
-static void s3c24xx_spi_cleanup(struct spi_device *spi)
-{
- kfree(spi->controller_state);
-}
-
-static inline unsigned int hw_txbyte(struct s3c24xx_spi *hw, int count)
-{
- return hw->tx ? hw->tx[count] : 0;
-}
-
-#ifdef CONFIG_SPI_S3C24XX_FIQ
-/* Support for FIQ based pseudo-DMA to improve the transfer speed.
- *
- * This code uses the assembly helper in spi_s3c24xx_spi.S which is
- * used by the FIQ core to move data between main memory and the peripheral
- * block. Since this is code running on the processor, there is no problem
- * with cache coherency of the buffers, so we can use any buffer we like.
- */
-
-/**
- * struct spi_fiq_code - FIQ code and header
- * @length: The length of the code fragment, excluding this header.
- * @ack_offset: The offset from @data to the word to place the IRQ ACK bit at.
- * @data: The code itself to install as a FIQ handler.
- */
-struct spi_fiq_code {
- u32 length;
- u32 ack_offset;
- u8 data[0];
-};
-
-extern struct spi_fiq_code s3c24xx_spi_fiq_txrx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_tx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_rx;
-
-/**
- * ack_bit - turn IRQ into IRQ acknowledgement bit
- * @irq: The interrupt number
- *
- * Returns the bit to write to the interrupt acknowledge register.
- */
-static inline u32 ack_bit(unsigned int irq)
-{
- return 1 << (irq - IRQ_EINT0);
-}
-
-/**
- * s3c24xx_spi_tryfiq - attempt to claim and setup FIQ for transfer
- * @hw: The hardware state.
- *
- * Claim the FIQ handler (only one can be active at any one time) and
- * then setup the correct transfer code for this transfer.
- *
- * This call updates all the necessary state information if successful,
- * so the caller does not need to do anything more than start the transfer
- * as normal, since the IRQ will have been re-routed to the FIQ handler.
-*/
-void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw)
-{
- struct pt_regs regs;
- enum spi_fiq_mode mode;
- struct spi_fiq_code *code;
- int ret;
-
- if (!hw->fiq_claimed) {
- /* try and claim fiq if we haven't got it, and if not
- * then return and simply use another transfer method */
-
- ret = claim_fiq(&hw->fiq_handler);
- if (ret)
- return;
- }
-
- if (hw->tx && !hw->rx)
- mode = FIQ_MODE_TX;
- else if (hw->rx && !hw->tx)
- mode = FIQ_MODE_RX;
- else
- mode = FIQ_MODE_TXRX;
-
- regs.uregs[fiq_rspi] = (long)hw->regs;
- regs.uregs[fiq_rrx] = (long)hw->rx;
- regs.uregs[fiq_rtx] = (long)hw->tx + 1;
- regs.uregs[fiq_rcount] = hw->len - 1;
- regs.uregs[fiq_rirq] = (long)S3C24XX_VA_IRQ;
-
- set_fiq_regs(&regs);
-
- if (hw->fiq_mode != mode) {
- u32 *ack_ptr;
-
- hw->fiq_mode = mode;
-
- switch (mode) {
- case FIQ_MODE_TX:
- code = &s3c24xx_spi_fiq_tx;
- break;
- case FIQ_MODE_RX:
- code = &s3c24xx_spi_fiq_rx;
- break;
- case FIQ_MODE_TXRX:
- code = &s3c24xx_spi_fiq_txrx;
- break;
- default:
- code = NULL;
- }
-
- BUG_ON(!code);
-
- ack_ptr = (u32 *)&code->data[code->ack_offset];
- *ack_ptr = ack_bit(hw->irq);
-
- set_fiq_handler(&code->data, code->length);
- }
-
- s3c24xx_set_fiq(hw->irq, true);
-
- hw->fiq_mode = mode;
- hw->fiq_inuse = 1;
-}
-
-/**
- * s3c24xx_spi_fiqop - FIQ core code callback
- * @pw: Data registered with the handler
- * @release: Whether this is a release or a return.
- *
- * Called by the FIQ code when another module wants to use the FIQ, so
- * return whether we are currently using this or not and then update our
- * internal state.
- */
-static int s3c24xx_spi_fiqop(void *pw, int release)
-{
- struct s3c24xx_spi *hw = pw;
- int ret = 0;
-
- if (release) {
- if (hw->fiq_inuse)
- ret = -EBUSY;
-
- /* note, we do not need to unroute the FIQ, as the FIQ
- * vector code de-routes it to signal the end of transfer */
-
- hw->fiq_mode = FIQ_MODE_NONE;
- hw->fiq_claimed = 0;
- } else {
- hw->fiq_claimed = 1;
- }
-
- return ret;
-}
-
-/**
- * s3c24xx_spi_initfiq - setup the information for the FIQ core
- * @hw: The hardware state.
- *
- * Setup the fiq_handler block to pass to the FIQ core.
- */
-static inline void s3c24xx_spi_initfiq(struct s3c24xx_spi *hw)
-{
- hw->fiq_handler.dev_id = hw;
- hw->fiq_handler.name = dev_name(hw->dev);
- hw->fiq_handler.fiq_op = s3c24xx_spi_fiqop;
-}
-
-/**
- * s3c24xx_spi_usefiq - return if we should be using FIQ.
- * @hw: The hardware state.
- *
- * Return true if the platform data specifies whether this channel is
- * allowed to use the FIQ.
- */
-static inline bool s3c24xx_spi_usefiq(struct s3c24xx_spi *hw)
-{
- return hw->pdata->use_fiq;
-}
-
-/**
- * s3c24xx_spi_usingfiq - return if channel is using FIQ
- * @spi: The hardware state.
- *
- * Return whether the channel is currently using the FIQ (separate from
- * whether the FIQ is claimed).
- */
-static inline bool s3c24xx_spi_usingfiq(struct s3c24xx_spi *spi)
-{
- return spi->fiq_inuse;
-}
-#else
-
-static inline void s3c24xx_spi_initfiq(struct s3c24xx_spi *s) { }
-static inline void s3c24xx_spi_tryfiq(struct s3c24xx_spi *s) { }
-static inline bool s3c24xx_spi_usefiq(struct s3c24xx_spi *s) { return false; }
-static inline bool s3c24xx_spi_usingfiq(struct s3c24xx_spi *s) { return false; }
-
-#endif /* CONFIG_SPI_S3C24XX_FIQ */
-
-static int s3c24xx_spi_txrx(struct spi_device *spi, struct spi_transfer *t)
-{
- struct s3c24xx_spi *hw = to_hw(spi);
-
- hw->tx = t->tx_buf;
- hw->rx = t->rx_buf;
- hw->len = t->len;
- hw->count = 0;
-
- init_completion(&hw->done);
-
- hw->fiq_inuse = 0;
- if (s3c24xx_spi_usefiq(hw) && t->len >= 3)
- s3c24xx_spi_tryfiq(hw);
-
- /* send the first byte */
- writeb(hw_txbyte(hw, 0), hw->regs + S3C2410_SPTDAT);
-
- wait_for_completion(&hw->done);
- return hw->count;
-}
-
-static irqreturn_t s3c24xx_spi_irq(int irq, void *dev)
-{
- struct s3c24xx_spi *hw = dev;
- unsigned int spsta = readb(hw->regs + S3C2410_SPSTA);
- unsigned int count = hw->count;
-
- if (spsta & S3C2410_SPSTA_DCOL) {
- dev_dbg(hw->dev, "data-collision\n");
- complete(&hw->done);
- goto irq_done;
- }
-
- if (!(spsta & S3C2410_SPSTA_READY)) {
- dev_dbg(hw->dev, "spi not ready for tx?\n");
- complete(&hw->done);
- goto irq_done;
- }
-
- if (!s3c24xx_spi_usingfiq(hw)) {
- hw->count++;
-
- if (hw->rx)
- hw->rx[count] = readb(hw->regs + S3C2410_SPRDAT);
-
- count++;
-
- if (count < hw->len)
- writeb(hw_txbyte(hw, count), hw->regs + S3C2410_SPTDAT);
- else
- complete(&hw->done);
- } else {
- hw->count = hw->len;
- hw->fiq_inuse = 0;
-
- if (hw->rx)
- hw->rx[hw->len-1] = readb(hw->regs + S3C2410_SPRDAT);
-
- complete(&hw->done);
- }
-
- irq_done:
- return IRQ_HANDLED;
-}
-
-static void s3c24xx_spi_initialsetup(struct s3c24xx_spi *hw)
-{
- /* for the moment, permanently enable the clock */
-
- clk_enable(hw->clk);
-
- /* program defaults into the registers */
-
- writeb(0xff, hw->regs + S3C2410_SPPRE);
- writeb(SPPIN_DEFAULT, hw->regs + S3C2410_SPPIN);
- writeb(SPCON_DEFAULT, hw->regs + S3C2410_SPCON);
-
- if (hw->pdata) {
- if (hw->set_cs == s3c24xx_spi_gpiocs)
- gpio_direction_output(hw->pdata->pin_cs, 1);
-
- if (hw->pdata->gpio_setup)
- hw->pdata->gpio_setup(hw->pdata, 1);
- }
-}
-
-static int __init s3c24xx_spi_probe(struct platform_device *pdev)
-{
- struct s3c2410_spi_info *pdata;
- struct s3c24xx_spi *hw;
- struct spi_master *master;
- struct resource *res;
- int err = 0;
-
- master = spi_alloc_master(&pdev->dev, sizeof(struct s3c24xx_spi));
- if (master == NULL) {
- dev_err(&pdev->dev, "No memory for spi_master\n");
- err = -ENOMEM;
- goto err_nomem;
- }
-
- hw = spi_master_get_devdata(master);
- memset(hw, 0, sizeof(struct s3c24xx_spi));
-
- hw->master = spi_master_get(master);
- hw->pdata = pdata = pdev->dev.platform_data;
- hw->dev = &pdev->dev;
-
- if (pdata == NULL) {
- dev_err(&pdev->dev, "No platform data supplied\n");
- err = -ENOENT;
- goto err_no_pdata;
- }
-
- platform_set_drvdata(pdev, hw);
- init_completion(&hw->done);
-
- /* initialise fiq handler */
-
- s3c24xx_spi_initfiq(hw);
-
- /* setup the master state. */
-
- /* the spi->mode bits understood by this driver: */
- master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
-
- master->num_chipselect = hw->pdata->num_cs;
- master->bus_num = pdata->bus_num;
-
- /* setup the state for the bitbang driver */
-
- hw->bitbang.master = hw->master;
- hw->bitbang.setup_transfer = s3c24xx_spi_setupxfer;
- hw->bitbang.chipselect = s3c24xx_spi_chipsel;
- hw->bitbang.txrx_bufs = s3c24xx_spi_txrx;
-
- hw->master->setup = s3c24xx_spi_setup;
- hw->master->cleanup = s3c24xx_spi_cleanup;
-
- dev_dbg(hw->dev, "bitbang at %p\n", &hw->bitbang);
-
- /* find and map our resources */
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
- err = -ENOENT;
- goto err_no_iores;
- }
-
- hw->ioarea = request_mem_region(res->start, resource_size(res),
- pdev->name);
-
- if (hw->ioarea == NULL) {
- dev_err(&pdev->dev, "Cannot reserve region\n");
- err = -ENXIO;
- goto err_no_iores;
- }
-
- hw->regs = ioremap(res->start, resource_size(res));
- if (hw->regs == NULL) {
- dev_err(&pdev->dev, "Cannot map IO\n");
- err = -ENXIO;
- goto err_no_iomap;
- }
-
- hw->irq = platform_get_irq(pdev, 0);
- if (hw->irq < 0) {
- dev_err(&pdev->dev, "No IRQ specified\n");
- err = -ENOENT;
- goto err_no_irq;
- }
-
- err = request_irq(hw->irq, s3c24xx_spi_irq, 0, pdev->name, hw);
- if (err) {
- dev_err(&pdev->dev, "Cannot claim IRQ\n");
- goto err_no_irq;
- }
-
- hw->clk = clk_get(&pdev->dev, "spi");
- if (IS_ERR(hw->clk)) {
- dev_err(&pdev->dev, "No clock for device\n");
- err = PTR_ERR(hw->clk);
- goto err_no_clk;
- }
-
- /* setup any gpio we can */
-
- if (!pdata->set_cs) {
- if (pdata->pin_cs < 0) {
- dev_err(&pdev->dev, "No chipselect pin\n");
- goto err_register;
- }
-
- err = gpio_request(pdata->pin_cs, dev_name(&pdev->dev));
- if (err) {
- dev_err(&pdev->dev, "Failed to get gpio for cs\n");
- goto err_register;
- }
-
- hw->set_cs = s3c24xx_spi_gpiocs;
- gpio_direction_output(pdata->pin_cs, 1);
- } else
- hw->set_cs = pdata->set_cs;
-
- s3c24xx_spi_initialsetup(hw);
-
- /* register our spi controller */
-
- err = spi_bitbang_start(&hw->bitbang);
- if (err) {
- dev_err(&pdev->dev, "Failed to register SPI master\n");
- goto err_register;
- }
-
- return 0;
-
- err_register:
- if (hw->set_cs == s3c24xx_spi_gpiocs)
- gpio_free(pdata->pin_cs);
-
- clk_disable(hw->clk);
- clk_put(hw->clk);
-
- err_no_clk:
- free_irq(hw->irq, hw);
-
- err_no_irq:
- iounmap(hw->regs);
-
- err_no_iomap:
- release_resource(hw->ioarea);
- kfree(hw->ioarea);
-
- err_no_iores:
- err_no_pdata:
- spi_master_put(hw->master);
-
- err_nomem:
- return err;
-}
-
-static int __exit s3c24xx_spi_remove(struct platform_device *dev)
-{
- struct s3c24xx_spi *hw = platform_get_drvdata(dev);
-
- platform_set_drvdata(dev, NULL);
-
- spi_bitbang_stop(&hw->bitbang);
-
- clk_disable(hw->clk);
- clk_put(hw->clk);
-
- free_irq(hw->irq, hw);
- iounmap(hw->regs);
-
- if (hw->set_cs == s3c24xx_spi_gpiocs)
- gpio_free(hw->pdata->pin_cs);
-
- release_resource(hw->ioarea);
- kfree(hw->ioarea);
-
- spi_master_put(hw->master);
- return 0;
-}
-
-
-#ifdef CONFIG_PM
-
-static int s3c24xx_spi_suspend(struct device *dev)
-{
- struct s3c24xx_spi *hw = platform_get_drvdata(to_platform_device(dev));
-
- if (hw->pdata && hw->pdata->gpio_setup)
- hw->pdata->gpio_setup(hw->pdata, 0);
-
- clk_disable(hw->clk);
- return 0;
-}
-
-static int s3c24xx_spi_resume(struct device *dev)
-{
- struct s3c24xx_spi *hw = platform_get_drvdata(to_platform_device(dev));
-
- s3c24xx_spi_initialsetup(hw);
- return 0;
-}
-
-static const struct dev_pm_ops s3c24xx_spi_pmops = {
- .suspend = s3c24xx_spi_suspend,
- .resume = s3c24xx_spi_resume,
-};
-
-#define S3C24XX_SPI_PMOPS &s3c24xx_spi_pmops
-#else
-#define S3C24XX_SPI_PMOPS NULL
-#endif /* CONFIG_PM */
-
-MODULE_ALIAS("platform:s3c2410-spi");
-static struct platform_driver s3c24xx_spi_driver = {
- .remove = __exit_p(s3c24xx_spi_remove),
- .driver = {
- .name = "s3c2410-spi",
- .owner = THIS_MODULE,
- .pm = S3C24XX_SPI_PMOPS,
- },
-};
-
-static int __init s3c24xx_spi_init(void)
-{
- return platform_driver_probe(&s3c24xx_spi_driver, s3c24xx_spi_probe);
-}
-
-static void __exit s3c24xx_spi_exit(void)
-{
- platform_driver_unregister(&s3c24xx_spi_driver);
-}
-
-module_init(s3c24xx_spi_init);
-module_exit(s3c24xx_spi_exit);
-
-MODULE_DESCRIPTION("S3C24XX SPI Driver");
-MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL");