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au1xmmc: remove custom carddetect poll implementation.
The MMC core provides a carddetect poll feature, time to remove the driver's own implementation of it. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
parent
08fcb7208c
commit
e2d2647702
1 changed files with 18 additions and 61 deletions
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@ -21,7 +21,7 @@
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* published by the Free Software Foundation.
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*/
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/* Why is a timer used to detect insert events?
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/* Why don't we use the SD controllers' carddetect feature?
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*
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* From the AU1100 MMC application guide:
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* If the Au1100-based design is intended to support both MultiMediaCards
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@ -30,8 +30,6 @@
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* In doing so, a MMC card never enters SPI-mode communications,
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* but now the SecureDigital card-detect feature of CD/DAT3 is ineffective
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* (the low to high transition will not occur).
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*
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* So we use the timer to check the status manually.
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*/
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#include <linux/module.h>
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@ -111,7 +109,6 @@ struct au1xmmc_host {
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int irq;
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struct timer_list timer;
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struct tasklet_struct finish_task;
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struct tasklet_struct data_task;
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struct au1xmmc_platform_data *platdata;
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@ -198,29 +195,24 @@ static void au1xmmc_set_power(struct au1xmmc_host *host, int state)
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host->platdata->set_power(host->mmc, state);
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}
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static int au1xmmc_card_inserted(struct au1xmmc_host *host)
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static int au1xmmc_card_inserted(struct mmc_host *mmc)
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{
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int ret;
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struct au1xmmc_host *host = mmc_priv(mmc);
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if (host->platdata && host->platdata->card_inserted)
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ret = host->platdata->card_inserted(host->mmc);
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else
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ret = 1; /* assume there is a card */
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return !!host->platdata->card_inserted(host->mmc);
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return ret;
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return -ENOSYS;
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}
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static int au1xmmc_card_readonly(struct mmc_host *mmc)
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{
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struct au1xmmc_host *host = mmc_priv(mmc);
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int ret;
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if (host->platdata && host->platdata->card_readonly)
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ret = host->platdata->card_readonly(mmc);
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else
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ret = 0; /* assume card is read-write */
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return !!host->platdata->card_readonly(mmc);
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return ret;
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return -ENOSYS;
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}
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static void au1xmmc_finish_request(struct au1xmmc_host *host)
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@ -698,7 +690,7 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
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host->status = HOST_S_CMD;
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/* fail request immediately if no card is present */
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if (0 == au1xmmc_card_inserted(host)) {
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if (0 == au1xmmc_card_inserted(mmc)) {
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mrq->cmd->error = -ENOMEDIUM;
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au1xmmc_finish_request(host);
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return;
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@ -935,39 +927,10 @@ static const struct mmc_host_ops au1xmmc_ops = {
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.request = au1xmmc_request,
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.set_ios = au1xmmc_set_ios,
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.get_ro = au1xmmc_card_readonly,
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.get_cd = au1xmmc_card_inserted,
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.enable_sdio_irq = au1xmmc_enable_sdio_irq,
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};
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static void au1xmmc_poll_event(unsigned long arg)
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{
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struct au1xmmc_host *host = (struct au1xmmc_host *)arg;
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int card = au1xmmc_card_inserted(host);
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int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0;
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if (card != controller) {
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host->flags &= ~HOST_F_ACTIVE;
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if (card)
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host->flags |= HOST_F_ACTIVE;
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mmc_detect_change(host->mmc, 0);
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}
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#ifdef DEBUG
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if (host->mrq != NULL) {
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u32 status = au_readl(HOST_STATUS(host));
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DBG("PENDING - %8.8x\n", host->pdev->id, status);
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}
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#endif
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mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT);
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}
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static void au1xmmc_init_cd_poll_timer(struct au1xmmc_host *host)
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{
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init_timer(&host->timer);
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host->timer.function = au1xmmc_poll_event;
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host->timer.data = (unsigned long)host;
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host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT;
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}
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static int __devinit au1xmmc_probe(struct platform_device *pdev)
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{
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struct mmc_host *mmc;
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@ -1042,13 +1005,11 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
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if (host->platdata && host->platdata->cd_setup) {
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ret = host->platdata->cd_setup(mmc, 1);
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if (ret) {
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dev_err(&pdev->dev, "board CD setup failed\n");
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goto out4;
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}
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} else {
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/* poll the board-specific is-card-in-socket-? method */
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au1xmmc_init_cd_poll_timer(host);
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dev_warn(&pdev->dev, "board CD setup failed\n");
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mmc->caps |= MMC_CAP_NEEDS_POLL;
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}
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} else
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mmc->caps |= MMC_CAP_NEEDS_POLL;
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tasklet_init(&host->data_task, au1xmmc_tasklet_data,
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(unsigned long)host);
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@ -1084,10 +1045,6 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, mmc);
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/* start the carddetect poll timer if necessary */
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if (!(host->platdata && host->platdata->cd_setup))
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add_timer(&host->timer);
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printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X"
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" (mode=%s)\n", pdev->id, host->iobase,
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host->flags & HOST_F_DMA ? "dma" : "pio");
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@ -1112,9 +1069,10 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
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tasklet_kill(&host->data_task);
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tasklet_kill(&host->finish_task);
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if (host->platdata && host->platdata->cd_setup)
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if (host->platdata && host->platdata->cd_setup &&
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!(mmc->caps & MMC_CAP_NEEDS_POLL))
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host->platdata->cd_setup(mmc, 0);
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out4:
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free_irq(host->irq, host);
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out3:
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iounmap((void *)host->iobase);
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@ -1142,10 +1100,9 @@ static int __devexit au1xmmc_remove(struct platform_device *pdev)
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led_classdev_unregister(host->platdata->led);
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#endif
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if (host->platdata && host->platdata->cd_setup)
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if (host->platdata && host->platdata->cd_setup &&
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!(mmc->caps & MMC_CAP_NEEDS_POLL))
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host->platdata->cd_setup(mmc, 0);
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else
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del_timer_sync(&host->timer);
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au_writel(0, HOST_ENABLE(host));
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au_writel(0, HOST_CONFIG(host));
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