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Commit 648f9d16 authored by Asutosh Das's avatar Asutosh Das Committed by xiaonian
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mmc: sdhci-msm: configure adma descriptors for large request size 



This patch adds a function to configure adma descriptors to
support request size upto 512MB.

Change-Id: Ie2ad32106422bb5bdbf72b08d1ecdd74d9a93c19
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
[xiaonian@codeaurora.org: fix trivial merge conflict]
Signed-off-by: default avatarXiaonian Wang <xiaonian@codeaurora.org>
parent 7bd9906a

drivers/mmc/host/sdhci-msm.c

+9 −0
Original line number Diff line number Diff line
@@ -75,6 +75,9 @@ 
#define CORE_CLK_PWRSAVE	(1 << 1)

#define CORE_IO_PAD_PWR_SWITCH	(1 << 16)



/* 8KB descriptors */

#define SDHCI_MSM_MAX_SEGMENTS  (1 << 13)



static const u32 tuning_block_64[] = {

	0x00FF0FFF, 0xCCC3CCFF, 0xFFCC3CC3, 0xEFFEFFFE,

	0xDDFFDFFF, 0xFBFFFBFF, 0xFF7FFFBF, 0xEFBDF777,
@@ -1222,10 +1225,16 @@ static void sdhci_msm_toggle_cdr(struct sdhci_host *host, bool enable) 
			       host->ioaddr + CORE_DLL_CONFIG);

}



static unsigned int sdhci_msm_max_segs(void)

{

	return SDHCI_MSM_MAX_SEGMENTS;

}



static struct sdhci_ops sdhci_msm_ops = {

	.check_power_status = sdhci_msm_check_power_status,

	.platform_execute_tuning = sdhci_msm_execute_tuning,

	.toggle_cdr = sdhci_msm_toggle_cdr,

	.get_max_segments = sdhci_msm_max_segs,

};



static int sdhci_msm_probe(struct platform_device *pdev)

drivers/mmc/host/sdhci.h

+1 −0
Original line number Diff line number Diff line
@@ -569,6 +569,7 @@ struct sdhci_ops { 
	void	(*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);

	void	(*hw_reset)(struct sdhci_host *host);

	void    (*adma_workaround)(struct sdhci_host *host, u32 intmask);

	unsigned int	(*get_max_segments)(void);

	void    (*card_event)(struct sdhci_host *host);

	void	(*toggle_cdr)(struct sdhci_host *host, bool enable);

	void	(*check_power_status)(struct sdhci_host *host);