Commit 998283e2 authored by Arnd Hannemann's avatar Arnd Hannemann Committed by Samuel Ortiz
Browse files

mfd: Allow the platform to specify the sh_mobile_sdhi get_cd handler 



On some platforms (e.g. AP4EVB) the card detect pin of a slot is not
directly connected to the sdhi hardware, so that polling needs to be used
with tmio_mmc and card detection is handled in the platform code.
This patch allows to set tmio_mmc capabilities (to pass the
MMC_CAP_NEEDS_POLL flag) and exposes a get_cd hook for that purpose.

Signed-off-by: default avatarArnd Hannemann <arnd@arndnet.de>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 19ca7502

drivers/mfd/sh_mobile_sdhi.c

+13 −0
Original line number Diff line number Diff line
@@ -65,6 +65,17 @@ static void sh_mobile_sdhi_set_pwr(struct platform_device *tmio, int state) 
		p->set_pwr(pdev, state);

}



static int sh_mobile_sdhi_get_cd(struct platform_device *tmio)

{

	struct platform_device *pdev = to_platform_device(tmio->dev.parent);

	struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;



	if (p && p->get_cd)

		return p->get_cd(pdev);

	else

		return -ENOSYS;

}



static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)

{

	struct sh_mobile_sdhi *priv;
@@ -106,10 +117,12 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) 


	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;

		mmc_data->ocr_mask = p->tmio_ocr_mask;

		mmc_data->capabilities |= p->tmio_caps;

	}



	if (p && p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) {

include/linux/mfd/sh_mobile_sdhi.h

+2 −0
Original line number Diff line number Diff line
@@ -7,8 +7,10 @@ struct sh_mobile_sdhi_info { 
	int dma_slave_tx;

	int dma_slave_rx;

	unsigned long tmio_flags;

	unsigned long tmio_caps;

	u32 tmio_ocr_mask;	/* available MMC voltages */

	void (*set_pwr)(struct platform_device *pdev, int state);

	int (*get_cd)(struct platform_device *pdev);

};



#endif /* __SH_MOBILE_SDHI_H__ */

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