Attachment 46384 Details for Bug 36823 – possible fix

[patch] possible fix

0001-drm-radeon-kms-ATPX-switcheroo-fixes.patch (text/plain), 2.20 KB, created by Alex Deucher on 2011-05-05 22:38:58 UTC

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Creator: Alex Deucher

Created: 2011-05-05 22:38:58 UTC

Size: 2.20 KB

patch

obsolete

>From 159c665ff6f951f8e1e2a290fe6453bb25300331 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexdeucher@gmail.com>
>Date: Fri, 6 May 2011 01:31:52 -0400
>Subject: [PATCH] drm/radeon/kms: ATPX switcheroo fixes
>
>When we switch the display mux, also switch
>the i2c mux.  Also use the start and finish
>methods to let the sbios know that the switch
>is happening.
>
>Should fix:
>https://bugs.freedesktop.org/show_bug.cgi?id=35398
>
>Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
>---
> drivers/gpu/drm/radeon/radeon_atpx_handler.c |   29 ++++++++++++++++++++++++-
> 1 files changed, 27 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
>index ed5dfe5..9d95792 100644
>--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
>+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
>@@ -15,6 +15,9 @@
> #define ATPX_VERSION 0
> #define ATPX_GPU_PWR 2
> #define ATPX_MUX_SELECT 3
>+#define ATPX_I2C_MUX_SELECT 4
>+#define ATPX_SWITCH_START 5
>+#define ATPX_SWITCH_END 6
> 
> #define ATPX_INTEGRATED 0
> #define ATPX_DISCRETE 1
>@@ -149,13 +152,35 @@ static int radeon_atpx_switch_mux(acpi_handle handle, int mux_id)
> 	return radeon_atpx_execute(handle, ATPX_MUX_SELECT, mux_id);
> }
> 
>+static int radeon_atpx_switch_i2c_mux(acpi_handle handle, int mux_id)
>+{
>+	return radeon_atpx_execute(handle, ATPX_I2C_MUX_SELECT, mux_id);
>+}
>+
>+static int radeon_atpx_switch_start(acpi_handle handle, int gpu_id)
>+{
>+	return radeon_atpx_execute(handle, ATPX_SWITCH_START, gpu_id);
>+}
>+
>+static int radeon_atpx_switch_end(acpi_handle handle, int gpu_id)
>+{
>+	return radeon_atpx_execute(handle, ATPX_SWITCH_END, gpu_id);
>+}
> 
> static int radeon_atpx_switchto(enum vga_switcheroo_client_id id)
> {
>+	int gpu_id;
>+
> 	if (id == VGA_SWITCHEROO_IGD)
>-		radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, 0);
>+		gpu_id = ATPX_INTEGRATED;
> 	else
>-		radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, 1);
>+		gpu_id = ATPX_DISCRETE;
>+
>+	radeon_atpx_switch_start(radeon_atpx_priv.atpx_handle, gpu_id);
>+	radeon_atpx_switch_mux(radeon_atpx_priv.atpx_handle, gpu_id);
>+	radeon_atpx_switch_i2c_mux(radeon_atpx_priv.atpx_handle, gpu_id);
>+	radeon_atpx_switch_end(radeon_atpx_priv.atpx_handle, gpu_id);
>+
> 	return 0;
> }
> 
>-- 
>1.7.1.1
>

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