video: tegra: host: Revert previous merge

The proper host driver patches will follow, based on the
pre-merge state.

also includes:
	[ARM]: tegra: host disable MPE auto power gate
	Fixes Random CRC failures on T30.
	Original-Change-Id: Ib42b8efc30d9e8910934bb9350e8170c9096e614
	Reviewed-on: http://git-master/r/18663

Original-Change-Id: I985bfbef277db4d533b67ee674db41d4a8daa18a
Reviewed-on: http://git-master/r/24296
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Tested-by: Scott Williams <scwilliams@nvidia.com>
Change-Id: Iec8ea27d5648b7f9f8ac51f2aca79b5e7cf44879

5 files changed, 12 insertions, 94 deletions

diff --git a/drivers/video/tegra/host/debug.c b/drivers/video/tegra/host/debug.c
index 1277c1bc8324..d17fe497022d 100644
--- a/drivers/video/tegra/host/debug.c
+++ b/drivers/video/tegra/host/debug.c
@@ -22,7 +22,7 @@
 
 #include "dev.h"
 
-static struct nvhost_master *debug_master;
+#ifdef CONFIG_DEBUG_FS
 
 enum {
 	NVHOST_DBG_STATE_CMD = 0,
@@ -155,28 +155,6 @@ static int nvhost_debug_show(struct seq_file *s, void *unused)
 
 	nvhost_module_busy(&m->mod);
 
-	seq_printf(s, "---- mlocks ----\n");
-	for (i = 0; i < NV_HOST1X_NB_MLOCKS; i++) {
-		u32 owner = readl(m->sync_aperture + HOST1X_SYNC_MLOCK_OWNER_0 + i * 4);
-		if (owner & 0x1)
-			seq_printf(s, "%d: locked by channel %d\n", i, (owner >> 8) * 0xff);
-		else if (owner & 0x2)
-			seq_printf(s, "%d: locked by cpu\n", i);
-		else
-			seq_printf(s, "%d: unlocked\n", i);
-	}
-	seq_printf(s, "\n---- syncpts ----\n");
-	for (i = 0; i < NV_HOST1X_SYNCPT_NB_PTS; i++) {
-		u32 max = nvhost_syncpt_read_max(&m->syncpt, i);
-		if (!max)
-			continue;
-		seq_printf(s, "id %d (%s) min %d max %d\n",
-			i, nvhost_syncpt_name(i),
-			nvhost_syncpt_update_min(&m->syncpt, i), max);
-
-	}
-
-	seq_printf(s, "\n---- channels ----\n");
 	for (i = 0; i < NVHOST_NUMCHANNELS; i++) {
 		void __iomem *regs = m->channels[i].aperture;
 		u32 dmaput, dmaget, dmactrl;
@@ -195,11 +173,8 @@ static int nvhost_debug_show(struct seq_file *s, void *unused)
 		cbread = readl(m->aperture + HOST1X_SYNC_CBREAD(i));
 		cbstat = readl(m->aperture + HOST1X_SYNC_CBSTAT(i));
 
-		seq_printf(s, "%d-%s (%d): ", i, m->channels[i].mod.name,
-			   atomic_read(&m->channels[i].mod.refcount));
-
 		if (dmactrl != 0x0 || !m->channels[i].cdma.push_buffer.mapped) {
-			seq_printf(s, "inactive\n\n");
+			seq_printf(s, "%d: inactive\n\n", i);
 			continue;
 		}
 
@@ -221,8 +196,8 @@ static int nvhost_debug_show(struct seq_file *s, void *unused)
 			break;
 
 		default:
-			seq_printf(s, "active class %02x, offset %04x, val %08x\n",
-				   cbstat >> 16, cbstat & 0xffff, cbread);
+			seq_printf(s, "%d: active class %02x, offset %04x, val %08x\n",
+				   i, cbstat >> 16, cbstat & 0xffff, cbread);
 			break;
 		}
 
@@ -292,7 +267,6 @@ static int nvhost_debug_show(struct seq_file *s, void *unused)
 	return 0;
 }
 
-#ifdef CONFIG_DEBUG_FS
 
 static int nvhost_debug_open(struct inode *inode, struct file *file)
 {
@@ -308,44 +282,12 @@ static const struct file_operations nvhost_debug_fops = {
 
 void nvhost_debug_init(struct nvhost_master *master)
 {
-	debug_master = master;
 	debugfs_create_file("tegra_host", S_IRUGO, NULL, master, &nvhost_debug_fops);
 }
 #else
-void nvhost_debug_init(struct nvhost_master *master)
+void nvhost_debug_add(struct nvhost_master *master)
 {
-	debug_master = master;
 }
 
 #endif
 
-static char nvhost_debug_dump_buff[16 * 1024];
-
-void nvhost_debug_dump(void)
-{
-	struct seq_file s;
-	int i;
-	char c;
-
-	memset(&s, 0x0, sizeof(s));
-
-	s.buf = nvhost_debug_dump_buff;
-	s.size = sizeof(nvhost_debug_dump_buff);
-	s.private = debug_master;
-
-	nvhost_debug_show(&s, NULL);
-
-	i = 0;
-	while (i < s.count ) {
-		if ((s.count - i) > 256) {
-			c = s.buf[i + 256];
-			s.buf[i + 256] = 0;
-			printk("%s", s.buf + i);
-			s.buf[i + 256] = c;
-		} else {
-			printk("%s", s.buf + i);
-		}
-		i += 256;
-	}
-}
-
diff --git a/drivers/video/tegra/host/dev.c b/drivers/video/tegra/host/dev.c
index 23853647709f..e9b85dd29267 100644
--- a/drivers/video/tegra/host/dev.c
+++ b/drivers/video/tegra/host/dev.c
@@ -209,9 +209,9 @@ static ssize_t nvhost_channelwrite(struct file *filp, const char __user *buf,
 	return (count - remaining);
 }
 
-static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
-                                      struct nvhost_get_param_args *args,
-                                      int null_kickoff)
+static int nvhost_ioctl_channel_flush(
+	struct nvhost_channel_userctx *ctx,
+	struct nvhost_get_param_args *args)
 {
 	struct device *device = &ctx->ch->dev->pdev->dev;
 	int num_unpin;
@@ -273,10 +273,7 @@ static long nvhost_channelctl(struct file *filp,
 
 	switch (cmd) {
 	case NVHOST_IOCTL_CHANNEL_FLUSH:
-		err = nvhost_ioctl_channel_flush(priv, (void *)buf, 0);
-		break;
-	case NVHOST_IOCTL_CHANNEL_NULL_KICKOFF:
-		err = nvhost_ioctl_channel_flush(priv, (void *)buf, 1);
+		err = nvhost_ioctl_channel_flush(priv, (void *)buf);
 		break;
 	case NVHOST_IOCTL_CHANNEL_GET_SYNCPOINTS:
 		((struct nvhost_get_param_args *)buf)->value =
diff --git a/drivers/video/tegra/host/dev.h b/drivers/video/tegra/host/dev.h
index f39ea75681e4..3e96f47e76d7 100644
--- a/drivers/video/tegra/host/dev.h
+++ b/drivers/video/tegra/host/dev.h
@@ -49,6 +49,5 @@ struct nvhost_master {
 };
 
 void nvhost_debug_init(struct nvhost_master *master);
-void nvhost_debug_dump(void);
 
 #endif
diff --git a/drivers/video/tegra/host/nvhost_acm.c b/drivers/video/tegra/host/nvhost_acm.c
index ee59900ed13c..10f5c2917c10 100644
--- a/drivers/video/tegra/host/nvhost_acm.c
+++ b/drivers/video/tegra/host/nvhost_acm.c
@@ -28,7 +28,7 @@
 #include <mach/powergate.h>
 #include <mach/clk.h>
 
-#define ACM_TIMEOUT 1*HZ
+#define ACM_TIMEOUT_MSEC 25
 
 #define DISABLE_3D_POWERGATING
 #define DISABLE_MPE_POWERGATING
@@ -101,18 +101,9 @@ static const char *get_module_clk_id(const char *module, int index)
 	if (index == 1 && strcmp(module, "gr2d") == 0)
 		return "epp";
 #ifdef CONFIG_ARCH_TEGRA_3x_SOC
-	/* FIXME: Use proper gr3d2 index. */
 	else if (index == 1 && strcmp(module, "gr3d") == 0)
 		return "gr3d2";
 #endif
-	else if (index == 2 && strcmp(module, "gr2d") == 0)
-		return "emc";
-#ifndef CONFIG_ARCH_TEGRA_3x_SOC
-	else if (index == 1 && strcmp(module, "gr3d") == 0)
-		return "emc";
-#endif
-	else if (index == 1 && strcmp(module, "mpe") == 0)
-		return "emc";
 	else if (index == 0)
 		return module;
 	return NULL;
@@ -173,12 +164,7 @@ int nvhost_module_init(struct nvhost_module *mod, const char *name,
 		mod->powergate_id = -1;
 	}
 #endif
-
 #ifdef DISABLE_MPE_POWERGATING
-	/*
-	 * Disable power gating for MPE as it seems to cause issues with
-	 * camera record stress tests when run in loop.
-	 */
 	if (mod->powergate_id == TEGRA_POWERGATE_MPE) {
 		tegra_powergate_sequence_power_up(mod->powergate_id,
 			mod->clk[0]);
@@ -229,16 +215,10 @@ static void debug_not_idle(struct nvhost_module *mod)
 
 void nvhost_module_suspend(struct nvhost_module *mod, bool system_suspend)
 {
-	int ret;
-
 	if (system_suspend && (!is_module_idle(mod)))
 		debug_not_idle(mod);
 
-	ret = wait_event_timeout(mod->idle, is_module_idle(mod),
-			   ACM_TIMEOUT + msecs_to_jiffies(500));
-	if (ret == 0)
-		nvhost_debug_dump();
-
+	wait_event(mod->idle, is_module_idle(mod));
 	if (system_suspend)
 		printk("tegra_grhost: entered idle\n");
 
diff --git a/drivers/video/tegra/host/nvhost_acm.h b/drivers/video/tegra/host/nvhost_acm.h
index f7e28af8e9cb..c765d983afb4 100644
--- a/drivers/video/tegra/host/nvhost_acm.h
+++ b/drivers/video/tegra/host/nvhost_acm.h
@@ -28,7 +28,7 @@
 #include <linux/mutex.h>
 #include <linux/clk.h>
 
-#define NVHOST_MODULE_MAX_CLOCKS 3
+#define NVHOST_MODULE_MAX_CLOCKS 2
 
 struct nvhost_module;