openwrtv3/target/linux/brcm2708/patches-3.10/0099-mmc-Report-3.3V-support-in-caps.patch

From f88d56e9c6976ebd217993062e0e53d65877685b Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Sat, 9 Nov 2013 17:42:58 +0000
Subject: [PATCH 099/196] mmc: Report 3.3V support in caps

sdhci: Use macros for out spin lock/unlock functions to reduce diffs with upstream code
---
 drivers/mmc/host/sdhci-bcm2708.c |  2 +
 drivers/mmc/host/sdhci.c         | 82 ++++++++++++++++++++++------------------
 2 files changed, 47 insertions(+), 37 deletions(-)

diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c
index 4770680..7fdd815 100644
--- a/drivers/mmc/host/sdhci-bcm2708.c
+++ b/drivers/mmc/host/sdhci-bcm2708.c
@@ -1282,6 +1282,8 @@ static int sdhci_bcm2708_probe(struct platform_device *pdev)
 	    host_priv->dma_chan, host_priv->dma_chan_base,
 	    host_priv->dma_irq);
 
+    // we support 3.3V
+    host->caps |= SDHCI_CAN_VDD_330;
     if (allow_highspeed)
         host->mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 470860b..13e4e11 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -210,6 +210,14 @@ static void sdhci_spin_disable_schedule(struct sdhci_host *host)
 #endif
 }
 
+
+#undef spin_lock_irqsave
+#define spin_lock_irqsave(host_lock, flags)      sdhci_spin_lock_irqsave(container_of(host_lock, struct sdhci_host, lock), &flags)
+#define spin_unlock_irqrestore(host_lock, flags) sdhci_spin_unlock_irqrestore(container_of(host_lock, struct sdhci_host, lock), flags)
+
+#define spin_lock(host_lock)   sdhci_spin_lock(container_of(host_lock, struct sdhci_host, lock))
+#define spin_unlock(host_lock) sdhci_spin_unlock(container_of(host_lock, struct sdhci_host, lock))
+
 static void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set)
 {
 	u32 ier;
@@ -374,7 +382,7 @@ static void sdhci_led_control(struct led_classdev *led,
 	struct sdhci_host *host = container_of(led, struct sdhci_host, led);
 	unsigned long flags;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->runtime_suspended)
 		goto out;
@@ -384,7 +392,7 @@ static void sdhci_led_control(struct led_classdev *led,
 	else
 		sdhci_activate_led(host);
 out:
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 #endif
 
@@ -1419,7 +1427,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
 	sdhci_runtime_pm_get(host);
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	WARN_ON(host->mrq != NULL);
 
@@ -1477,9 +1485,9 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 					mmc->card->type == MMC_TYPE_MMC ?
 					MMC_SEND_TUNING_BLOCK_HS200 :
 					MMC_SEND_TUNING_BLOCK;
-				sdhci_spin_unlock_irqrestore(host, flags);
+				spin_unlock_irqrestore(&host->lock, flags);
 				sdhci_execute_tuning(mmc, tuning_opcode);
-				sdhci_spin_lock_irqsave(host, &flags);
+				spin_lock_irqsave(&host->lock, flags);
 
 				/* Restore original mmc_request structure */
 				host->mrq = mrq;
@@ -1493,7 +1501,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	}
 
 	mmiowb();
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
@@ -1502,10 +1510,10 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 	int vdd_bit = -1;
 	u8 ctrl;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->flags & SDHCI_DEVICE_DEAD) {
-		sdhci_spin_unlock_irqrestore(host, flags);
+		spin_unlock_irqrestore(&host->lock, flags);
 		if (host->vmmc && ios->power_mode == MMC_POWER_OFF)
 			mmc_regulator_set_ocr(host->mmc, host->vmmc, 0);
 		return;
@@ -1532,9 +1540,9 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 		vdd_bit = sdhci_set_power(host, ios->vdd);
 
 	if (host->vmmc && vdd_bit != -1) {
-		sdhci_spin_unlock_irqrestore(host, flags);
+		spin_unlock_irqrestore(&host->lock, flags);
 		mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit);
-		sdhci_spin_lock_irqsave(host, &flags);
+		spin_lock_irqsave(&host->lock, flags);
 	}
 
 	if (host->ops->platform_send_init_74_clocks)
@@ -1672,7 +1680,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 		sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
 
 	mmiowb();
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
@@ -1720,7 +1728,7 @@ static int sdhci_check_ro(struct sdhci_host *host)
 	unsigned long flags;
 	int is_readonly;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->flags & SDHCI_DEVICE_DEAD)
 		is_readonly = 0;
@@ -1730,7 +1738,7 @@ static int sdhci_check_ro(struct sdhci_host *host)
 		is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE)
 				& SDHCI_WRITE_PROTECT);
 
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	/* This quirk needs to be replaced by a callback-function later */
 	return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ?
@@ -1803,9 +1811,9 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 	struct sdhci_host *host = mmc_priv(mmc);
 	unsigned long flags;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 	sdhci_enable_sdio_irq_nolock(host, enable);
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
@@ -2149,7 +2157,7 @@ static void sdhci_card_event(struct mmc_host *mmc)
 	struct sdhci_host *host = mmc_priv(mmc);
 	unsigned long flags;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	/* Check host->mrq first in case we are runtime suspended */
 	if (host->mrq &&
@@ -2166,7 +2174,7 @@ static void sdhci_card_event(struct mmc_host *mmc)
 		tasklet_schedule(&host->finish_tasklet);
 	}
 
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 static const struct mmc_host_ops sdhci_ops = {
@@ -2205,14 +2213,14 @@ static void sdhci_tasklet_finish(unsigned long param)
 
 	host = (struct sdhci_host*)param;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
         /*
          * If this tasklet gets rescheduled while running, it will
          * be run again afterwards but without any active request.
          */
 	if (!host->mrq) {
-		sdhci_spin_unlock_irqrestore(host, flags);
+		spin_unlock_irqrestore(&host->lock, flags);
 		return;
 	}
 
@@ -2250,7 +2258,7 @@ static void sdhci_tasklet_finish(unsigned long param)
 #endif
 
 	mmiowb();
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	mmc_request_done(host->mmc, mrq);
 	sdhci_runtime_pm_put(host);
@@ -2263,7 +2271,7 @@ static void sdhci_timeout_timer(unsigned long data)
 
 	host = (struct sdhci_host*)data;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	if (host->mrq) {
 		pr_err("%s: Timeout waiting for hardware "
@@ -2284,7 +2292,7 @@ static void sdhci_timeout_timer(unsigned long data)
 	}
 
 	mmiowb();
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 static void sdhci_tuning_timer(unsigned long data)
@@ -2294,11 +2302,11 @@ static void sdhci_tuning_timer(unsigned long data)
 
 	host = (struct sdhci_host *)data;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	host->flags |= SDHCI_NEEDS_RETUNING;
 
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 /*****************************************************************************\
@@ -2522,10 +2530,10 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 	u32 intmask, unexpected = 0;
 	int cardint = 0, max_loops = 16;
 
-	sdhci_spin_lock(host);
+	spin_lock(&host->lock);
 
 	if (host->runtime_suspended) {
-		sdhci_spin_unlock(host);
+		spin_unlock(&host->lock);
 		pr_warning("%s: got irq while runtime suspended\n",
 		       mmc_hostname(host->mmc));
 		return IRQ_HANDLED;
@@ -2629,7 +2637,7 @@ again:
 	if (intmask && --max_loops)
 		goto again;
 out:
-	sdhci_spin_unlock(host);
+	spin_unlock(&host->lock);
 
 	if (unexpected) {
 		pr_err("%s: Unexpected interrupt 0x%08x.\n",
@@ -2791,15 +2799,15 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host)
 		host->flags &= ~SDHCI_NEEDS_RETUNING;
 	}
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 	sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	synchronize_irq(host->irq);
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 	host->runtime_suspended = true;
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	return ret;
 }
@@ -2825,16 +2833,16 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
 	sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
 	if ((host_flags & SDHCI_PV_ENABLED) &&
 		!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
-		sdhci_spin_lock_irqsave(host, &flags);
+		spin_lock_irqsave(&host->lock, flags);
 		sdhci_enable_preset_value(host, true);
-		sdhci_spin_unlock_irqrestore(host, flags);
+		spin_unlock_irqrestore(&host->lock, flags);
 	}
 
 	/* Set the re-tuning expiration flag */
 	if (host->flags & SDHCI_USING_RETUNING_TIMER)
 		host->flags |= SDHCI_NEEDS_RETUNING;
 
-	sdhci_spin_lock_irqsave(host, &flags);
+	spin_lock_irqsave(&host->lock, flags);
 
 	host->runtime_suspended = false;
 
@@ -2845,7 +2853,7 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
 	/* Enable Card Detection */
 	sdhci_enable_card_detection(host);
 
-	sdhci_spin_unlock_irqrestore(host, flags);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	return ret;
 }
@@ -3401,7 +3409,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 	unsigned long flags;
 
 	if (dead) {
-		sdhci_spin_lock_irqsave(host, &flags);
+		spin_lock_irqsave(&host->lock, flags);
 
 		host->flags |= SDHCI_DEVICE_DEAD;
 
@@ -3413,7 +3421,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 			tasklet_schedule(&host->finish_tasklet);
 		}
 
-		sdhci_spin_unlock_irqrestore(host, flags);
+		spin_unlock_irqrestore(&host->lock, flags);
 	}
 
 	sdhci_disable_card_detection(host);
-- 
1.9.1