1 files changed, 0 insertions, 492 deletions
diff --git a/ANDROID_3.4.5/drivers/gpu/vga/vga_switcheroo.c b/ANDROID_3.4.5/drivers/gpu/vga/vga_switcheroo.c
deleted file mode 100644
index 58434e80..00000000
--- a/ANDROID_3.4.5/drivers/gpu/vga/vga_switcheroo.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * Copyright (c) 2010 Red Hat Inc.
- * Author : Dave Airlie <airlied@redhat.com>
- *
- *
- * Licensed under GPLv2
- *
- * vga_switcheroo.c - Support for laptop with dual GPU using one set of outputs
-
- Switcher interface - methods require for ATPX and DCM
- - switchto - this throws the output MUX switch
- - discrete_set_power - sets the power state for the discrete card
-
- GPU driver interface
- - set_gpu_state - this should do the equiv of s/r for the card
-		  - this should *not* set the discrete power state
- - switch_check  - check if the device is in a position to switch now
- */
-
-#include <linux/module.h>
-#include <linux/dmi.h>
-#include <linux/seq_file.h>
-#include <linux/uaccess.h>
-#include <linux/fs.h>
-#include <linux/debugfs.h>
-#include <linux/fb.h>
-
-#include <linux/pci.h>
-#include <linux/vga_switcheroo.h>
-
-struct vga_switcheroo_client {
-	struct pci_dev *pdev;
-	struct fb_info *fb_info;
-	int pwr_state;
-	void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state);
-	void (*reprobe)(struct pci_dev *pdev);
-	bool (*can_switch)(struct pci_dev *pdev);
-	int id;
-	bool active;
-};
-
-static DEFINE_MUTEX(vgasr_mutex);
-
-struct vgasr_priv {
-
-	bool active;
-	bool delayed_switch_active;
-	enum vga_switcheroo_client_id delayed_client_id;
-
-	struct dentry *debugfs_root;
-	struct dentry *switch_file;
-
-	int registered_clients;
-	struct vga_switcheroo_client clients[VGA_SWITCHEROO_MAX_CLIENTS];
-
-	struct vga_switcheroo_handler *handler;
-};
-
-static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv);
-static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv);
-
-/* only one switcheroo per system */
-static struct vgasr_priv vgasr_priv;
-
-int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler)
-{
-	mutex_lock(&vgasr_mutex);
-	if (vgasr_priv.handler) {
-		mutex_unlock(&vgasr_mutex);
-		return -EINVAL;
-	}
-
-	vgasr_priv.handler = handler;
-	mutex_unlock(&vgasr_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(vga_switcheroo_register_handler);
-
-void vga_switcheroo_unregister_handler(void)
-{
-	mutex_lock(&vgasr_mutex);
-	vgasr_priv.handler = NULL;
-	mutex_unlock(&vgasr_mutex);
-}
-EXPORT_SYMBOL(vga_switcheroo_unregister_handler);
-
-static void vga_switcheroo_enable(void)
-{
-	int i;
-	int ret;
-	/* call the handler to init */
-	vgasr_priv.handler->init();
-
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		ret = vgasr_priv.handler->get_client_id(vgasr_priv.clients[i].pdev);
-		if (ret < 0)
-			return;
-
-		vgasr_priv.clients[i].id = ret;
-	}
-	vga_switcheroo_debugfs_init(&vgasr_priv);
-	vgasr_priv.active = true;
-}
-
-int vga_switcheroo_register_client(struct pci_dev *pdev,
-				   void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state),
-				   void (*reprobe)(struct pci_dev *pdev),
-				   bool (*can_switch)(struct pci_dev *pdev))
-{
-	int index;
-
-	mutex_lock(&vgasr_mutex);
-	/* don't do IGD vs DIS here */
-	if (vgasr_priv.registered_clients & 1)
-		index = 1;
-	else
-		index = 0;
-
-	vgasr_priv.clients[index].pwr_state = VGA_SWITCHEROO_ON;
-	vgasr_priv.clients[index].pdev = pdev;
-	vgasr_priv.clients[index].set_gpu_state = set_gpu_state;
-	vgasr_priv.clients[index].reprobe = reprobe;
-	vgasr_priv.clients[index].can_switch = can_switch;
-	vgasr_priv.clients[index].id = -1;
-	if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
-		vgasr_priv.clients[index].active = true;
-
-	vgasr_priv.registered_clients |= (1 << index);
-
-	/* if we get two clients + handler */
-	if (vgasr_priv.registered_clients == 0x3 && vgasr_priv.handler) {
-		printk(KERN_INFO "vga_switcheroo: enabled\n");
-		vga_switcheroo_enable();
-	}
-	mutex_unlock(&vgasr_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(vga_switcheroo_register_client);
-
-void vga_switcheroo_unregister_client(struct pci_dev *pdev)
-{
-	int i;
-
-	mutex_lock(&vgasr_mutex);
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].pdev == pdev) {
-			vgasr_priv.registered_clients &= ~(1 << i);
-			break;
-		}
-	}
-
-	printk(KERN_INFO "vga_switcheroo: disabled\n");
-	vga_switcheroo_debugfs_fini(&vgasr_priv);
-	vgasr_priv.active = false;
-	mutex_unlock(&vgasr_mutex);
-}
-EXPORT_SYMBOL(vga_switcheroo_unregister_client);
-
-void vga_switcheroo_client_fb_set(struct pci_dev *pdev,
-				 struct fb_info *info)
-{
-	int i;
-
-	mutex_lock(&vgasr_mutex);
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].pdev == pdev) {
-			vgasr_priv.clients[i].fb_info = info;
-			break;
-		}
-	}
-	mutex_unlock(&vgasr_mutex);
-}
-EXPORT_SYMBOL(vga_switcheroo_client_fb_set);
-
-static int vga_switcheroo_show(struct seq_file *m, void *v)
-{
-	int i;
-	mutex_lock(&vgasr_mutex);
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		seq_printf(m, "%d:%s:%c:%s:%s\n", i,
-			   vgasr_priv.clients[i].id == VGA_SWITCHEROO_DIS ? "DIS" : "IGD",
-			   vgasr_priv.clients[i].active ? '+' : ' ',
-			   vgasr_priv.clients[i].pwr_state ? "Pwr" : "Off",
-			   pci_name(vgasr_priv.clients[i].pdev));
-	}
-	mutex_unlock(&vgasr_mutex);
-	return 0;
-}
-
-static int vga_switcheroo_debugfs_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, vga_switcheroo_show, NULL);
-}
-
-static int vga_switchon(struct vga_switcheroo_client *client)
-{
-	if (vgasr_priv.handler->power_state)
-		vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON);
-	/* call the driver callback to turn on device */
-	client->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON);
-	client->pwr_state = VGA_SWITCHEROO_ON;
-	return 0;
-}
-
-static int vga_switchoff(struct vga_switcheroo_client *client)
-{
-	/* call the driver callback to turn off device */
-	client->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF);
-	if (vgasr_priv.handler->power_state)
-		vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_OFF);
-	client->pwr_state = VGA_SWITCHEROO_OFF;
-	return 0;
-}
-
-/* stage one happens before delay */
-static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
-{
-	int i;
-	struct vga_switcheroo_client *active = NULL;
-
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].active == true) {
-			active = &vgasr_priv.clients[i];
-			break;
-		}
-	}
-	if (!active)
-		return 0;
-
-	if (new_client->pwr_state == VGA_SWITCHEROO_OFF)
-		vga_switchon(new_client);
-
-	/* swap shadow resource to denote boot VGA device has changed so X starts on new device */
-	active->pdev->resource[PCI_ROM_RESOURCE].flags &= ~IORESOURCE_ROM_SHADOW;
-	new_client->pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
-	return 0;
-}
-
-/* post delay */
-static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
-{
-	int ret;
-	int i;
-	struct vga_switcheroo_client *active = NULL;
-
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].active == true) {
-			active = &vgasr_priv.clients[i];
-			break;
-		}
-	}
-	if (!active)
-		return 0;
-
-	active->active = false;
-
-	if (new_client->fb_info) {
-		struct fb_event event;
-		event.info = new_client->fb_info;
-		fb_notifier_call_chain(FB_EVENT_REMAP_ALL_CONSOLE, &event);
-	}
-
-	ret = vgasr_priv.handler->switchto(new_client->id);
-	if (ret)
-		return ret;
-
-	if (new_client->reprobe)
-		new_client->reprobe(new_client->pdev);
-
-	if (active->pwr_state == VGA_SWITCHEROO_ON)
-		vga_switchoff(active);
-
-	new_client->active = true;
-	return 0;
-}
-
-static ssize_t
-vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
-			     size_t cnt, loff_t *ppos)
-{
-	char usercmd[64];
-	const char *pdev_name;
-	int i, ret;
-	bool delay = false, can_switch;
-	bool just_mux = false;
-	int client_id = -1;
-	struct vga_switcheroo_client *client = NULL;
-
-	if (cnt > 63)
-		cnt = 63;
-
-	if (copy_from_user(usercmd, ubuf, cnt))
-		return -EFAULT;
-
-	mutex_lock(&vgasr_mutex);
-
-	if (!vgasr_priv.active) {
-		cnt = -EINVAL;
-		goto out;
-	}
-
-	/* pwr off the device not in use */
-	if (strncmp(usercmd, "OFF", 3) == 0) {
-		for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-			if (vgasr_priv.clients[i].active)
-				continue;
-			if (vgasr_priv.clients[i].pwr_state == VGA_SWITCHEROO_ON)
-				vga_switchoff(&vgasr_priv.clients[i]);
-		}
-		goto out;
-	}
-	/* pwr on the device not in use */
-	if (strncmp(usercmd, "ON", 2) == 0) {
-		for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-			if (vgasr_priv.clients[i].active)
-				continue;
-			if (vgasr_priv.clients[i].pwr_state == VGA_SWITCHEROO_OFF)
-				vga_switchon(&vgasr_priv.clients[i]);
-		}
-		goto out;
-	}
-
-	/* request a delayed switch - test can we switch now */
-	if (strncmp(usercmd, "DIGD", 4) == 0) {
-		client_id = VGA_SWITCHEROO_IGD;
-		delay = true;
-	}
-
-	if (strncmp(usercmd, "DDIS", 4) == 0) {
-		client_id = VGA_SWITCHEROO_DIS;
-		delay = true;
-	}
-
-	if (strncmp(usercmd, "IGD", 3) == 0)
-		client_id = VGA_SWITCHEROO_IGD;
-
-	if (strncmp(usercmd, "DIS", 3) == 0)
-		client_id = VGA_SWITCHEROO_DIS;
-
-	if (strncmp(usercmd, "MIGD", 4) == 0) {
-		just_mux = true;
-		client_id = VGA_SWITCHEROO_IGD;
-	}
-	if (strncmp(usercmd, "MDIS", 4) == 0) {
-		just_mux = true;
-		client_id = VGA_SWITCHEROO_DIS;
-	}
-
-	if (client_id == -1)
-		goto out;
-
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].id == client_id) {
-			client = &vgasr_priv.clients[i];
-			break;
-		}
-	}
-
-	vgasr_priv.delayed_switch_active = false;
-
-	if (just_mux) {
-		ret = vgasr_priv.handler->switchto(client_id);
-		goto out;
-	}
-
-	if (client->active == true)
-		goto out;
-
-	/* okay we want a switch - test if devices are willing to switch */
-	can_switch = true;
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		can_switch = vgasr_priv.clients[i].can_switch(vgasr_priv.clients[i].pdev);
-		if (can_switch == false) {
-			printk(KERN_ERR "vga_switcheroo: client %d refused switch\n", i);
-			break;
-		}
-	}
-
-	if (can_switch == false && delay == false)
-		goto out;
-
-	if (can_switch == true) {
-		pdev_name = pci_name(client->pdev);
-		ret = vga_switchto_stage1(client);
-		if (ret)
-			printk(KERN_ERR "vga_switcheroo: switching failed stage 1 %d\n", ret);
-
-		ret = vga_switchto_stage2(client);
-		if (ret)
-			printk(KERN_ERR "vga_switcheroo: switching failed stage 2 %d\n", ret);
-
-	} else {
-		printk(KERN_INFO "vga_switcheroo: setting delayed switch to client %d\n", client->id);
-		vgasr_priv.delayed_switch_active = true;
-		vgasr_priv.delayed_client_id = client_id;
-
-		ret = vga_switchto_stage1(client);
-		if (ret)
-			printk(KERN_ERR "vga_switcheroo: delayed switching stage 1 failed %d\n", ret);
-	}
-
-out:
-	mutex_unlock(&vgasr_mutex);
-	return cnt;
-}
-
-static const struct file_operations vga_switcheroo_debugfs_fops = {
-	.owner = THIS_MODULE,
-	.open = vga_switcheroo_debugfs_open,
-	.write = vga_switcheroo_debugfs_write,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
-
-static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv)
-{
-	if (priv->switch_file) {
-		debugfs_remove(priv->switch_file);
-		priv->switch_file = NULL;
-	}
-	if (priv->debugfs_root) {
-		debugfs_remove(priv->debugfs_root);
-		priv->debugfs_root = NULL;
-	}
-}
-
-static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv)
-{
-	/* already initialised */
-	if (priv->debugfs_root)
-		return 0;
-	priv->debugfs_root = debugfs_create_dir("vgaswitcheroo", NULL);
-
-	if (!priv->debugfs_root) {
-		printk(KERN_ERR "vga_switcheroo: Cannot create /sys/kernel/debug/vgaswitcheroo\n");
-		goto fail;
-	}
-
-	priv->switch_file = debugfs_create_file("switch", 0644,
-						priv->debugfs_root, NULL, &vga_switcheroo_debugfs_fops);
-	if (!priv->switch_file) {
-		printk(KERN_ERR "vga_switcheroo: cannot create /sys/kernel/debug/vgaswitcheroo/switch\n");
-		goto fail;
-	}
-	return 0;
-fail:
-	vga_switcheroo_debugfs_fini(priv);
-	return -1;
-}
-
-int vga_switcheroo_process_delayed_switch(void)
-{
-	struct vga_switcheroo_client *client = NULL;
-	const char *pdev_name;
-	bool can_switch = true;
-	int i;
-	int ret;
-	int err = -EINVAL;
-
-	mutex_lock(&vgasr_mutex);
-	if (!vgasr_priv.delayed_switch_active)
-		goto err;
-
-	printk(KERN_INFO "vga_switcheroo: processing delayed switch to %d\n", vgasr_priv.delayed_client_id);
-
-	for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
-		if (vgasr_priv.clients[i].id == vgasr_priv.delayed_client_id)
-			client = &vgasr_priv.clients[i];
-		can_switch = vgasr_priv.clients[i].can_switch(vgasr_priv.clients[i].pdev);
-		if (can_switch == false) {
-			printk(KERN_ERR "vga_switcheroo: client %d refused switch\n", i);
-			break;
-		}
-	}
-
-	if (can_switch == false || client == NULL)
-		goto err;
-
-	pdev_name = pci_name(client->pdev);
-	ret = vga_switchto_stage2(client);
-	if (ret)
-		printk(KERN_ERR "vga_switcheroo: delayed switching failed stage 2 %d\n", ret);
-
-	vgasr_priv.delayed_switch_active = false;
-	err = 0;
-err:
-	mutex_unlock(&vgasr_mutex);
-	return err;
-}
-EXPORT_SYMBOL(vga_switcheroo_process_delayed_switch);
-