evie/android_kernel_oneplus_msm8998
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mmc: sdhci-msm: add support for command-queue

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Adds support for command-queue (CQ).
MSM driver supports CQ in the hardware. The controller
can send commands to the card and read statuses from the
device. This patch adds support for the same.

Change-Id: I1b19a2ce4c124c96dc6c3852d8f58ad076851f4b
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
This commit is contained in:
Venkat Gopalakrishnan 2015-05-29 17:49:46 -07:00 • committed by Subhash Jadavani
parent c4dd8dad71
commit 11bb322287
1 changed files with 24 additions and 0 deletions
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24
drivers/mmc/host/sdhci-msm.c
View file

@ -41,6 +41,7 @@
#include "sdhci-msm.h"
#include "sdhci-msm-ice.h"
#include "cmdq_hci.h"
#define CORE_POWER 0x0
#define CORE_SW_RST (1 << 7)
@ -2841,6 +2842,28 @@ static void sdhci_set_default_hw_caps(struct sdhci_msm_host *msm_host,
msm_host->caps_0 = caps;
}
#ifdef CONFIG_MMC_CQ_HCI
static void sdhci_msm_cmdq_init(struct sdhci_host *host,
struct platform_device *pdev)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_msm_host *msm_host = pltfm_host->priv;
host->cq_host = cmdq_pltfm_init(pdev);
if (IS_ERR(host->cq_host))
dev_dbg(&pdev->dev, "cmdq-pltfm init: failed: %ld\n",
PTR_ERR(host->cq_host));
else
msm_host->mmc->caps2 |= MMC_CAP2_CMD_QUEUE;
}
#else
static void sdhci_msm_cmdq_init(struct sdhci_host *host,
struct platform_device *pdev)
{
}
#endif
static int sdhci_msm_probe(struct platform_device *pdev)
{
struct sdhci_host *host;
@ -3218,6 +3241,7 @@ static int sdhci_msm_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "%s: Failed to set dma mask\n", __func__);
}
sdhci_msm_cmdq_init(host, pdev);
ret = sdhci_add_host(host);
if (ret) {
dev_err(&pdev->dev, "Add host failed (%d)\n", ret);