[RFC PATCH 5/6] mmc: tmio: factor out TAP usage

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TAPs are Renesas SDHI specific. Now that we moved all handling to the
SDHI core, we can also move the definitions from the TMIO struct to the
SDHI one.

Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/mmc/host/renesas_sdhi.h      |  5 ++++
 drivers/mmc/host/renesas_sdhi_core.c | 38 ++++++++++++++--------------
 drivers/mmc/host/tmio_mmc.h          |  5 ----
 3 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index 11a0b2bca3aa..7a1a741547f2 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -58,6 +58,11 @@ struct renesas_sdhi {
 	u32 scc_tappos;
 	u32 scc_tappos_hs400;
 	bool doing_tune;
+
+	/* Tuning values: 1 for success, 0 for failure */
+	DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));
+	unsigned int tap_num;
+	unsigned long tap_set;
 };
 
 #define host_to_priv(host) \
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 0c9e5e010bda..22eaabe513d0 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -354,7 +354,7 @@ static void renesas_sdhi_hs400_complete(struct tmio_mmc_host *host)
 
 	if (priv->quirks && priv->quirks->hs400_4taps)
 		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET,
-			       host->tap_set / 2);
+			       priv->tap_set / 2);
 
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_CKSEL,
 		       SH_MOBILE_SDHI_SCC_CKSEL_DTSEL |
@@ -438,11 +438,11 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
 	 * result requiring the tap to be good in both runs before
 	 * considering it for tuning selection.
 	 */
-	for (i = 0; i < host->tap_num * 2; i++) {
-		int offset = host->tap_num * (i < host->tap_num ? 1 : -1);
+	for (i = 0; i < priv->tap_num * 2; i++) {
+		int offset = priv->tap_num * (i < priv->tap_num ? 1 : -1);
 
-		if (!test_bit(i, host->taps))
-			clear_bit(i + offset, host->taps);
+		if (!test_bit(i, priv->taps))
+			clear_bit(i + offset, priv->taps);
 	}
 
 	/*
@@ -454,8 +454,8 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
 	ntap = 0;
 	tap_start = 0;
 	tap_end = 0;
-	for (i = 0; i < host->tap_num * 2; i++) {
-		if (test_bit(i, host->taps)) {
+	for (i = 0; i < priv->tap_num * 2; i++) {
+		if (test_bit(i, priv->taps)) {
 			ntap++;
 		} else {
 			if (ntap > tap_cnt) {
@@ -474,12 +474,12 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
 	}
 
 	if (tap_cnt >= SH_MOBILE_SDHI_MAX_TAP)
-		host->tap_set = (tap_start + tap_end) / 2 % host->tap_num;
+		priv->tap_set = (tap_start + tap_end) / 2 % priv->tap_num;
 	else
 		return -EIO;
 
 	/* Set SCC */
-	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, host->tap_set);
+	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, priv->tap_set);
 
 	/* Enable auto re-tuning */
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL,
@@ -494,27 +494,27 @@ static int renesas_sdhi_execute_tuning(struct tmio_mmc_host *host, u32 opcode)
 	struct renesas_sdhi *priv = host_to_priv(host);
 	int i, ret;
 
-	host->tap_num = renesas_sdhi_init_tuning(host);
-	if (!host->tap_num)
+	priv->tap_num = renesas_sdhi_init_tuning(host);
+	if (!priv->tap_num)
 		return 0; /* Tuning is not supported */
 
-	if (host->tap_num * 2 >= sizeof(host->taps) * BITS_PER_BYTE) {
+	if (priv->tap_num * 2 >= sizeof(priv->taps) * BITS_PER_BYTE) {
 		dev_err(&host->pdev->dev,
 			"Too many taps, please update 'taps' in tmio_mmc_host!\n");
 		return -EINVAL;
 	}
 
 	priv->doing_tune = true;
-	bitmap_zero(host->taps, host->tap_num * 2);
+	bitmap_zero(priv->taps, priv->tap_num * 2);
 
 	/* Issue CMD19 twice for each tap */
-	for (i = 0; i < 2 * host->tap_num; i++) {
+	for (i = 0; i < 2 * priv->tap_num; i++) {
 		/* Set sampling clock position */
-		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, i % host->tap_num);
+		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, i % priv->tap_num);
 
 		ret = mmc_send_tuning(host->mmc, opcode, NULL);
 		if (ret == 0)
-			set_bit(i, host->taps);
+			set_bit(i, priv->taps);
 	}
 
 	return renesas_sdhi_select_tuning(host);
@@ -523,7 +523,7 @@ static int renesas_sdhi_execute_tuning(struct tmio_mmc_host *host, u32 opcode)
 static bool renesas_sdhi_manual_correction(struct tmio_mmc_host *host, bool use_4tap)
 {
 	struct renesas_sdhi *priv = host_to_priv(host);
-	unsigned long new_tap = host->tap_set;
+	unsigned long new_tap = priv->tap_set;
 	u32 val;
 
 	val = sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ);
@@ -560,9 +560,9 @@ static bool renesas_sdhi_manual_correction(struct tmio_mmc_host *host, bool use_
 			return false;
 	}
 
-	host->tap_set = (new_tap % host->tap_num);
+	priv->tap_set = (new_tap % priv->tap_num);
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET,
-		       host->tap_set / (use_4tap ? 2 : 1));
+		       priv->tap_set / (use_4tap ? 2 : 1));
 
 	return false;
 }
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index b6fffd3d2650..b4cf10109162 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -184,11 +184,6 @@ struct tmio_mmc_host {
 	 */
 	int (*execute_tuning)(struct tmio_mmc_host *host, u32 opcode);
 
-	/* Tuning values: 1 for success, 0 for failure */
-	DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));
-	unsigned int tap_num;
-	unsigned long tap_set;
-
 	void (*prepare_hs400_tuning)(struct tmio_mmc_host *host);
 	void (*hs400_downgrade)(struct tmio_mmc_host *host);
 	void (*hs400_complete)(struct tmio_mmc_host *host);
-- 
2.20.1




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