linux-kernel - [PATCH RFC 11/12] mmc: mmci: Add Qcom variations to MCICommand register.

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Date:	Mon, 21 Apr 2014 22:49:25 +0100
From:	srinivas.kandagatla@...aro.org
To:	linux-mmc@...r.kernel.org
Cc:	Russell King <linux@....linux.org.uk>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-kernel@...r.kernel.org, agross@...cinc.com,
	linux-arm-msm@...r.kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH RFC 11/12] mmc: mmci: Add Qcom variations to MCICommand register.

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

Some bits which control Command Path State Machine (CPSM) are new in Qcom
integration, so this patch adds support to those bits.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/mmc/host/mmci.c |    4 ++++
 drivers/mmc/host/mmci.h |    7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 2cd3a8f..8fcd8ef 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -910,6 +910,10 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
 	if (/*interrupt*/0)
 		c |= MCI_CPSM_INTERRUPT;
 
+	if (host->hw_designer == AMBA_VENDOR_QCOM &&
+	    mmc_cmd_type(cmd) == MMC_CMD_ADTC)
+		c |= MCI_CSPM_QCOM_DATCMD;
+
 	host->cmd = cmd;
 
 	mmci_writel(host, cmd->arg, MMCIARGUMENT);
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 0a6de1c..2ba0834 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -64,6 +64,13 @@
 #define MCI_ST_ENCMD_COMPL	(1 << 12)
 #define MCI_ST_NIEN		(1 << 13)
 #define MCI_ST_CE_ATACMD	(1 << 14)
+/* Modified on Qualcomm Integrations */
+#define MCI_CSPM_QCOM_DATCMD		(1 << 12)
+#define MCI_CSPM_QCOM_MCIABORT		(1 << 13)
+#define MCI_CSPM_QCOM_CCSENABLE		(1 << 14)
+#define MCI_CSPM_QCOM_CCSDISABLE	(1 << 15)
+#define MCI_CSPM_QCOM_AUTO_CMD19	(1 << 16)
+#define MCI_CSPM_QCOM_AUTO_CMD21	(1 << 21)
 
 #define MMCIRESPCMD		0x010
 #define MMCIRESPONSE0		0x014
-- 
1.7.9.5

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