From 851ab954daee0d8328e239a468835e36e6215182 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Mon, 6 Dec 2010 12:35:52 +1000 Subject: [PATCH] vga_switcheroo: add debugging mux switch option. This allows the mux to be switched from userspace using MIGD/MDIS command to the switch. Signed-off-by: Dave Airlie --- drivers/gpu/vga/vga_switcheroo.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index c3c213b74478..463691a1650e 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -266,6 +266,7 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf, 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; @@ -320,6 +321,15 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf, if (strncmp(usercmd, "DIS", 3) == 0) client_id = VGA_SWITCHEROO_DIS; + if (strncmp(usercmd, "MIGD", 3) == 0) { + just_mux = true; + client_id = VGA_SWITCHEROO_IGD; + } + if (strncmp(usercmd, "MDIS", 3) == 0) { + just_mux = true; + client_id = VGA_SWITCHEROO_DIS; + } + if (client_id == -1) goto out; @@ -331,6 +341,12 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf, } vgasr_priv.delayed_switch_active = false; + + if (just_mux) { + ret = vgasr_priv.handler->switchto(client_id); + 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++) { -- 2.20.1