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Commit f594c15b authored by Sarthak Garg's avatar Sarthak Garg Committed by Gerrit - the friendly Code Review server
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host: sdhci-msm: implement get_current_limit() host op 



This is needed to get the current capabilities of vdd
regulator that is not managed by SDHCI driver.

Change-Id: I2a7f2981043185b51e268bf30c4ab9135991c6ee
Signed-off-by: default avatarSarthak Garg <sartgarg@codeaurora.org>
parent e445c189

drivers/mmc/host/sdhci-msm.c

+18 −0
Original line number Diff line number Diff line
@@ -512,6 +512,21 @@ static unsigned int msm_get_clock_rate_for_bus_mode(struct sdhci_host *host, 
	return clock;

}



#if defined(CONFIG_SDC_QTI)

static unsigned int sdhci_msm_get_current_limit(struct sdhci_host *host)

{

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);

	struct sdhci_msm_vreg_data *curr_slot = msm_host->vreg_data;

	u32 max_curr = 0;



	if (curr_slot && curr_slot->vdd_data)

		max_curr = curr_slot->vdd_data->hpm_uA;



	return max_curr;

}

#endif



static void msm_set_clock_rate_for_bus_mode(struct sdhci_host *host,

					    unsigned int clock)

{
@@ -3060,6 +3075,9 @@ static const struct sdhci_ops sdhci_msm_ops = { 
	.write_w = sdhci_msm_writew,

	.write_b = sdhci_msm_writeb,

	.irq	= sdhci_msm_cqe_irq,

#if defined(CONFIG_SDC_QTI)

	.get_current_limit = sdhci_msm_get_current_limit,

#endif

};



static const struct sdhci_pltfm_data sdhci_msm_pdata = {

drivers/mmc/host/sdhci.c

+9 −2
Original line number Diff line number Diff line
@@ -4286,8 +4286,15 @@ int sdhci_setup_host(struct sdhci_host *host) 
	 * value.

	 */

	max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);

	if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) {

		int curr = regulator_get_current_limit(mmc->supply.vmmc);

	if (!max_current_caps) {

		u32 curr = 0;



		if (!IS_ERR(mmc->supply.vmmc))

			curr = regulator_get_current_limit(mmc->supply.vmmc);

#if defined(CONFIG_SDC_QTI)

		else if (host->ops->get_current_limit)

			curr = host->ops->get_current_limit(host);

#endif

		if (curr > 0) {



			/* convert to SDHCI_MAX_CURRENT format */

drivers/mmc/host/sdhci.h

+3 −0
Original line number Diff line number Diff line
@@ -658,6 +658,9 @@ struct sdhci_ops { 
				   dma_addr_t addr, int len, unsigned int cmd);

	void	(*request_done)(struct sdhci_host *host,

				struct mmc_request *mrq);

	#if defined(CONFIG_SDC_QTI)

	unsigned int    (*get_current_limit)(struct sdhci_host *host);

	#endif

};



#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS