Esempio n. 1
0
static int __devinit tmio_mmc_probe(struct platform_device *pdev)
{
	const struct mfd_cell *cell = mfd_get_cell(pdev);
	struct tmio_mmc_data *pdata;
	struct tmio_mmc_host *host;
	int ret = -EINVAL, irq;

	if (pdev->num_resources != 2)
		goto out;

	pdata = pdev->dev.platform_data;
	if (!pdata || !pdata->hclk)
		goto out;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		ret = irq;
		goto out;
	}

	/*                                              */
	if (cell->enable) {
		ret = cell->enable(pdev);
		if (ret)
			goto out;
	}

	ret = tmio_mmc_host_probe(&host, pdev, pdata);
	if (ret)
		goto cell_disable;

	ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
				dev_name(&pdev->dev), host);
	if (ret)
		goto host_remove;

	pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
		(unsigned long)host->ctl, irq);

	return 0;

host_remove:
	tmio_mmc_host_remove(host);
cell_disable:
	if (cell->disable)
		cell->disable(pdev);
out:
	return ret;
}
Esempio n. 2
0
static int __devinit tmio_mmc_probe(struct platform_device *pdev)
{
	const struct mfd_cell *cell = mfd_get_cell(pdev);
	struct tmio_mmc_data *pdata;
	struct tmio_mmc_host *host;
	int ret = -EINVAL;

	if (pdev->num_resources != 2)
		goto out;

	pdata = mfd_get_data(pdev);
	if (!pdata || !pdata->hclk)
		goto out;

	/* Tell the MFD core we are ready to be enabled */
	if (cell->enable) {
		ret = cell->enable(pdev);
		if (ret)
			goto out;
	}

	ret = tmio_mmc_host_probe(&host, pdev, pdata);
	if (ret)
		goto cell_disable;

	pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
		(unsigned long)host->ctl, host->irq);

	return 0;

cell_disable:
	if (cell->disable)
		cell->disable(pdev);
out:
	return ret;
}
static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
{
	struct sh_mobile_sdhi *priv;
	struct tmio_mmc_data *mmc_data;
	struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
	struct tmio_mmc_host *host;
	char clk_name[8];
	int irq, ret, i = 0;
	bool multiplexed_isr = true;

	priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
	if (priv == NULL) {
		dev_err(&pdev->dev, "kzalloc failed\n");
		return -ENOMEM;
	}

	mmc_data = &priv->mmc_data;
	p->pdata = mmc_data;

	if (p->init) {
		ret = p->init(pdev, &sdhi_ops);
		if (ret)
			goto einit;
	}

	snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id);
	priv->clk = clk_get(&pdev->dev, clk_name);
	if (IS_ERR(priv->clk)) {
		dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
		ret = PTR_ERR(priv->clk);
		goto eclkget;
	}

	mmc_data->hclk = clk_get_rate(priv->clk);
	mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
	mmc_data->get_cd = sh_mobile_sdhi_get_cd;
	mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
	if (p) {
		mmc_data->flags = p->tmio_flags;
		if (mmc_data->flags & TMIO_MMC_HAS_IDLE_WAIT)
			mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
		mmc_data->ocr_mask = p->tmio_ocr_mask;
		mmc_data->capabilities |= p->tmio_caps;
		mmc_data->cd_gpio = p->cd_gpio;

		if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
			priv->param_tx.slave_id = p->dma_slave_tx;
			priv->param_rx.slave_id = p->dma_slave_rx;
			priv->dma_priv.chan_priv_tx = &priv->param_tx;
			priv->dma_priv.chan_priv_rx = &priv->param_rx;
			priv->dma_priv.alignment_shift = 1; 
			mmc_data->dma = &priv->dma_priv;
		}
	}

	mmc_data->flags |= TMIO_MMC_BLKSZ_2BYTES;

	mmc_data->flags |= TMIO_MMC_SDIO_IRQ;

	ret = tmio_mmc_host_probe(&host, pdev, mmc_data);
	if (ret < 0)
		goto eprobe;


	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
	if (irq >= 0) {
		multiplexed_isr = false;
		ret = request_irq(irq, tmio_mmc_card_detect_irq, 0,
				  dev_name(&pdev->dev), host);
		if (ret)
			goto eirq_card_detect;
	}

	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
	if (irq >= 0) {
		multiplexed_isr = false;
		ret = request_irq(irq, tmio_mmc_sdio_irq, 0,
				  dev_name(&pdev->dev), host);
		if (ret)
			goto eirq_sdio;
	}

	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD);
	if (irq >= 0) {
		multiplexed_isr = false;
		ret = request_irq(irq, tmio_mmc_sdcard_irq, 0,
				  dev_name(&pdev->dev), host);
		if (ret)
			goto eirq_sdcard;
	} else if (!multiplexed_isr) {
		dev_err(&pdev->dev,
			"Principal SD-card IRQ is missing among named interrupts\n");
		ret = irq;
		goto eirq_sdcard;
	}

	if (multiplexed_isr) {
		while (1) {
			irq = platform_get_irq(pdev, i);
			if (irq < 0)
				break;
			i++;
			ret = request_irq(irq, tmio_mmc_irq, 0,
					  dev_name(&pdev->dev), host);
			if (ret)
				goto eirq_multiplexed;
		}

		
		if (!i)
			goto eirq_multiplexed;
	}

	dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
		 mmc_hostname(host->mmc), (unsigned long)
		 (platform_get_resource(pdev, IORESOURCE_MEM, 0)->start),
		 mmc_data->hclk / 1000000);

	return ret;

eirq_multiplexed:
	while (i--) {
		irq = platform_get_irq(pdev, i);
		free_irq(irq, host);
	}
eirq_sdcard:
	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
	if (irq >= 0)
		free_irq(irq, host);
eirq_sdio:
	irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
	if (irq >= 0)
		free_irq(irq, host);
eirq_card_detect:
	tmio_mmc_host_remove(host);
eprobe:
	clk_put(priv->clk);
eclkget:
	if (p->cleanup)
		p->cleanup(pdev);
einit:
	kfree(priv);
	return ret;
}