[PATCH] drm/radeon: add new AMD ACPI header and update relevant code
Luca Tettamanti
kronos.it at gmail.com
Tue Jul 31 13:05:20 PDT 2012
On Tue, Jul 31, 2012 at 09:58:04AM -0400, Alex Deucher wrote:
> On Tue, Jul 31, 2012 at 5:16 AM, Luca Tettamanti <kronos.it at gmail.com> wrote:
> > On Mon, Jul 30, 2012 at 10:45 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> >> Regarding patches 3 and 4, it might be easier to just store a pointer
> >> to the relevant encoder when you verify ATIF rather than walking the
> >> encoder list every time.
Done.
> > Makes sense, I was unsure about the lifetime of the encoders, but
> > AFAICS they're destroyed only when the module in unloaded.
>
> They are present for the life of the driver.
I had to move to call to radeon_acpi_init after radeon_modeset_init,
otherwise the encoders are not present yet (the tear down code path is
correct, acpi first, then modeset).
Latest and greatest version is attached; I fixed notifications when
using custom command codes (tested by Pali Rohár) and implemented your
suggestion.
Luca
-------------- next part --------------
>From f0f8699eabee0d47b93fba14f8126b821cc106a5 Mon Sep 17 00:00:00 2001
From: Luca Tettamanti <kronos.it at gmail.com>
Date: Sun, 29 Jul 2012 17:04:43 +0200
Subject: [PATCH 1/4] drm/radeon: refactor radeon_atif_call
Don't hard-code function number, this will allow to reuse the function.
v2: add support for the 2nd parameter (from Lee, Chun-Yi
<jlee at suse.com>).
Signed-off-by: Luca Tettamanti <kronos.it at gmail.com>
---
drivers/gpu/drm/radeon/radeon_acpi.c | 38 ++++++++++++++++++++--------------
1 file changed, 23 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
index 5b32e49..158e514 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.c
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -14,23 +14,30 @@
#include <linux/vga_switcheroo.h>
/* Call the ATIF method
- *
- * Note: currently we discard the output
*/
-static int radeon_atif_call(acpi_handle handle)
+static union acpi_object *radeon_atif_call(acpi_handle handle, int function,
+ struct acpi_buffer *params)
{
acpi_status status;
union acpi_object atif_arg_elements[2];
struct acpi_object_list atif_arg;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
atif_arg.count = 2;
atif_arg.pointer = &atif_arg_elements[0];
atif_arg_elements[0].type = ACPI_TYPE_INTEGER;
- atif_arg_elements[0].integer.value = ATIF_FUNCTION_VERIFY_INTERFACE;
- atif_arg_elements[1].type = ACPI_TYPE_INTEGER;
- atif_arg_elements[1].integer.value = 0;
+ atif_arg_elements[0].integer.value = function;
+
+ if (params) {
+ atif_arg_elements[1].type = ACPI_TYPE_BUFFER;
+ atif_arg_elements[1].buffer.length = params->length;
+ atif_arg_elements[1].buffer.pointer = params->pointer;
+ } else {
+ /* We need a second fake parameter */
+ atif_arg_elements[1].type = ACPI_TYPE_INTEGER;
+ atif_arg_elements[1].integer.value = 0;
+ }
status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer);
@@ -39,18 +46,18 @@ static int radeon_atif_call(acpi_handle handle)
DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n",
acpi_format_exception(status));
kfree(buffer.pointer);
- return 1;
+ return NULL;
}
- kfree(buffer.pointer);
- return 0;
+ return buffer.pointer;
}
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
acpi_handle handle;
- int ret;
+ union acpi_object *info;
+ int ret = 0;
/* Get the device handle */
handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
@@ -60,10 +67,11 @@ int radeon_acpi_init(struct radeon_device *rdev)
return 0;
/* Call the ATIF method */
- ret = radeon_atif_call(handle);
- if (ret)
- return ret;
+ info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL);
+ if (!info)
+ ret = -EIO;
- return 0;
+ kfree(info);
+ return ret;
}
--
1.7.10.4
-------------- next part --------------
>From 427002ddf653b0abd0fb820b09322bf2a0b281af Mon Sep 17 00:00:00 2001
From: Luca Tettamanti <kronos.it at gmail.com>
Date: Mon, 30 Jul 2012 21:11:58 +0200
Subject: [PATCH 2/4] drm/radeon: implement radeon_atif_verify_interface
Wrap the call to VERIFY_INTERFACE and add the parsing of the support
vectors.
v2: use a packed struct for handling the output of ACPI calls, hides
ugly pointer arithmetics (Lee, Chun-Yi <jlee at suse.com>).
Signed-off-by: Luca Tettamanti <kronos.it at gmail.com>
---
drivers/gpu/drm/radeon/radeon.h | 40 +++++++++++++++++
drivers/gpu/drm/radeon/radeon_acpi.c | 79 +++++++++++++++++++++++++++++++---
2 files changed, 113 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index fefcca5..0db98eb 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1456,6 +1456,44 @@ struct r600_vram_scratch {
u64 gpu_addr;
};
+/*
+ * ACPI
+ */
+struct radeon_atif_notification_cfg {
+ bool enabled;
+ int command_code;
+};
+
+struct radeon_atif_notifications {
+ bool display_switch;
+ bool expansion_mode_change;
+ bool thermal_state;
+ bool forced_power_state;
+ bool system_power_state;
+ bool display_conf_change;
+ bool px_gfx_switch;
+ bool brightness_change;
+ bool dgpu_display_event;
+};
+
+struct radeon_atif_functions {
+ bool system_params;
+ bool sbios_requests;
+ bool select_active_disp;
+ bool lid_state;
+ bool get_tv_standard;
+ bool set_tv_standard;
+ bool get_panel_expansion_mode;
+ bool set_panel_expansion_mode;
+ bool temperature_change;
+ bool graphics_device_types;
+};
+
+struct radeon_atif {
+ struct radeon_atif_notifications notifications;
+ struct radeon_atif_functions functions;
+ struct radeon_atif_notification_cfg notification_cfg;
+};
/*
* Core structure, functions and helpers.
@@ -1548,6 +1586,8 @@ struct radeon_device {
unsigned debugfs_count;
/* virtual memory */
struct radeon_vm_manager vm_manager;
+ /* ACPI interface */
+ struct radeon_atif atif;
};
int radeon_device_init(struct radeon_device *rdev,
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
index 158e514..53c519d 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.c
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -13,6 +13,13 @@
#include <linux/vga_switcheroo.h>
+struct atif_verify_interface {
+ u16 size; /* structure size in bytes (includes size field) */
+ u16 version; /* version */
+ u32 notification_mask; /* supported notifications mask */
+ u32 function_bits; /* supported functions bit vector */
+} __packed;
+
/* Call the ATIF method
*/
static union acpi_object *radeon_atif_call(acpi_handle handle, int function,
@@ -52,12 +59,73 @@ static union acpi_object *radeon_atif_call(acpi_handle handle, int function,
return buffer.pointer;
}
+static void radeon_atif_parse_notification(struct radeon_atif_notifications *n, u32 mask)
+{
+ n->display_switch = mask & ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED;
+ n->expansion_mode_change = mask & ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED;
+ n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED;
+ n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED;
+ n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED;
+ n->display_conf_change = mask & ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED;
+ n->px_gfx_switch = mask & ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED;
+ n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED;
+ n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED;
+}
+
+static void radeon_atif_parse_functions(struct radeon_atif_functions *f, u32 mask)
+{
+ f->system_params = ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED;
+ f->sbios_requests = ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED;
+ f->select_active_disp = ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED;
+ f->lid_state = ATIF_GET_LID_STATE_SUPPORTED;
+ f->get_tv_standard = ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED;
+ f->set_tv_standard = ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED;
+ f->get_panel_expansion_mode = ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED;
+ f->set_panel_expansion_mode = ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED;
+ f->temperature_change = ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED;
+ f->graphics_device_types = ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED;
+}
+
+static int radeon_atif_verify_interface(acpi_handle handle,
+ struct radeon_atif *atif)
+{
+ union acpi_object *info;
+ struct atif_verify_interface output;
+ size_t size;
+ int err = 0;
+
+ info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL);
+ if (!info)
+ return -EIO;
+
+ memset(&output, 0, sizeof(output));
+
+ size = *(u16 *) info->buffer.pointer;
+ if (size < 12) {
+ DRM_INFO("ATIF buffer is too small: %lu\n", size);
+ err = -EINVAL;
+ goto out;
+ }
+ size = min(sizeof(output), size);
+
+ memcpy(&output, info->buffer.pointer, size);
+
+ /* TODO: check version? */
+ DRM_DEBUG_DRIVER("ATIF version %u\n", output.version);
+
+ radeon_atif_parse_notification(&atif->notifications, output.notification_mask);
+ radeon_atif_parse_functions(&atif->functions, output.function_bits);
+
+out:
+ kfree(info);
+ return err;
+}
+
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
acpi_handle handle;
- union acpi_object *info;
- int ret = 0;
+ int ret;
/* Get the device handle */
handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
@@ -67,11 +135,10 @@ int radeon_acpi_init(struct radeon_device *rdev)
return 0;
/* Call the ATIF method */
- info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL);
- if (!info)
- ret = -EIO;
+ ret = radeon_atif_verify_interface(handle, &rdev->atif);
+ if (ret)
+ DRM_DEBUG_DRIVER("Call to verify_interface failed: %d\n", ret);
- kfree(info);
return ret;
}
--
1.7.10.4
-------------- next part --------------
>From e83d04d1b60c5cf46611f6afc9680024e1dad73b Mon Sep 17 00:00:00 2001
From: Luca Tettamanti <kronos.it at gmail.com>
Date: Mon, 30 Jul 2012 21:16:06 +0200
Subject: [PATCH 3/4] drm/radeon: implement wrapper for GET_SYSTEM_PARAMS
Use GET_SYSTEM_PARAMS for retrieving the configuration for the system
BIOS notifications.
v2: packed struct (Lee, Chun-Yi <jlee at suse.com>)
Signed-off-by: Luca Tettamanti <kronos.it at gmail.com>
---
drivers/gpu/drm/radeon/radeon_acpi.c | 84 +++++++++++++++++++++++++++++++++-
1 file changed, 82 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
index 53c519d..3d025dd 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.c
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -20,6 +20,18 @@ struct atif_verify_interface {
u32 function_bits; /* supported functions bit vector */
} __packed;
+struct atif_system_params {
+ u16 size;
+ u32 valid_mask;
+ u32 flags;
+ u8 command_code;
+} __packed;
+
+#define ATIF_NOTIFY_MASK 0x3
+#define ATIF_NOTIFY_NONE 0
+#define ATIF_NOTIFY_81 1
+#define ATIF_NOTIFY_N 2
+
/* Call the ATIF method
*/
static union acpi_object *radeon_atif_call(acpi_handle handle, int function,
@@ -121,10 +133,56 @@ out:
return err;
}
+static int radeon_atif_get_notification_params(acpi_handle handle,
+ struct radeon_atif_notification_cfg *n)
+{
+ union acpi_object *info;
+ struct atif_system_params params;
+ size_t size;
+ int err = 0;
+
+ info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, NULL);
+ if (!info) {
+ err = -EIO;
+ goto out;
+ }
+
+ size = *(u16 *) info->buffer.pointer;
+ if (size < 10) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ memset(¶ms, 0, sizeof(params));
+ size = min(sizeof(params), size);
+ memcpy(¶ms, info->buffer.pointer, size);
+
+ params.flags = params.flags & params.valid_mask;
+
+ if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) {
+ n->enabled = false;
+ n->command_code = 0;
+ } else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) {
+ n->enabled = true;
+ n->command_code = 0x81;
+ } else {
+ if (size < 11) {
+ err = -EINVAL;
+ goto out;
+ }
+ n->command_code = params.command_code;
+ }
+
+out:
+ kfree(info);
+ return err;
+}
+
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
acpi_handle handle;
+ struct radeon_atif *atif = &rdev->atif;
int ret;
/* Get the device handle */
@@ -135,10 +193,32 @@ int radeon_acpi_init(struct radeon_device *rdev)
return 0;
/* Call the ATIF method */
- ret = radeon_atif_verify_interface(handle, &rdev->atif);
- if (ret)
+ ret = radeon_atif_verify_interface(handle, atif);
+ if (ret) {
DRM_DEBUG_DRIVER("Call to verify_interface failed: %d\n", ret);
+ goto out;
+ }
+
+ if (atif->functions.sbios_requests && !atif->functions.system_params) {
+ /* XXX check this workraround, if sbios request function is
+ * present we have to see how it's configured in the system
+ * params
+ */
+ atif->functions.system_params = true;
+ }
+
+ if (atif->functions.system_params) {
+ ret = radeon_atif_get_notification_params(handle,
+ &atif->notification_cfg);
+ if (ret) {
+ DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n",
+ ret);
+ /* Disable notification */
+ atif->notification_cfg.enabled = false;
+ }
+ }
+out:
return ret;
}
--
1.7.10.4
-------------- next part --------------
>From 88a3e35a0495cfff7d1a8ea23b779c621b3e1faa Mon Sep 17 00:00:00 2001
From: Luca Tettamanti <kronos.it at gmail.com>
Date: Mon, 30 Jul 2012 21:20:35 +0200
Subject: [PATCH 4/4] drm/radeon: implement handler for ACPI event
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Set up an handler for ACPI events and respond to brightness change
requests from the system BIOS.
v2: fix notification when using device-specific command codes
(tested by Pali Rohár <pali.rohar at gmail.com>); cache the encoder
controlling the backlight during the initialization to avoid searching
it every time (suggested by Alex Deucher).
Signed-off-by: Luca Tettamanti <kronos.it at gmail.com>
---
drivers/gpu/drm/radeon/atombios_encoders.c | 2 +-
drivers/gpu/drm/radeon/radeon.h | 1 +
drivers/gpu/drm/radeon/radeon_acpi.c | 132 +++++++++++++++++++++++++++-
drivers/gpu/drm/radeon/radeon_acpi.h | 6 ++
drivers/gpu/drm/radeon/radeon_kms.c | 16 ++--
drivers/gpu/drm/radeon/radeon_mode.h | 2 +
drivers/gpu/drm/radeon/radeon_pm.c | 4 +-
7 files changed, 152 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index c2d3552..e4152d6 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -72,7 +72,7 @@ radeon_atom_set_backlight_level_to_reg(struct radeon_device *rdev,
WREG32(RADEON_BIOS_2_SCRATCH, bios_2_scratch);
}
-static void
+void
atombios_set_panel_brightness(struct radeon_encoder *radeon_encoder)
{
struct drm_encoder *encoder = &radeon_encoder->base;
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 0db98eb..a57795b 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1493,6 +1493,7 @@ struct radeon_atif {
struct radeon_atif_notifications notifications;
struct radeon_atif_functions functions;
struct radeon_atif_notification_cfg notification_cfg;
+ struct radeon_encoder *backlight_ctl;
};
/*
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
index 3d025dd..9a97914 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.c
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -3,6 +3,7 @@
#include <linux/slab.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
+#include <acpi/video.h>
#include "drmP.h"
#include "drm.h"
@@ -10,6 +11,7 @@
#include "drm_crtc_helper.h"
#include "radeon.h"
#include "radeon_acpi.h"
+#include "atom.h"
#include <linux/vga_switcheroo.h>
@@ -21,10 +23,22 @@ struct atif_verify_interface {
} __packed;
struct atif_system_params {
- u16 size;
- u32 valid_mask;
- u32 flags;
- u8 command_code;
+ u16 size; /* structure size in bytes (includes size field) */
+ u32 valid_mask; /* valid flags mask */
+ u32 flags; /* flags */
+ u8 command_code; /* notify command code */
+} __packed;
+
+struct atif_sbios_requests {
+ u16 size; /* structure size in bytes (includes size field) */
+ u32 pending; /* pending sbios requests */
+ u8 panel_exp_mode; /* panel expansion mode */
+ u8 thermal_gfx; /* thermal state: target gfx controller */
+ u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */
+ u8 forced_power_gfx; /* forced power state: target gfx controller */
+ u8 forced_power_state; /* forced power state: state id */
+ u8 system_power_src; /* system power source */
+ u8 backlight_level; /* panel backlight level (0-255) */
} __packed;
#define ATIF_NOTIFY_MASK 0x3
@@ -157,6 +171,8 @@ static int radeon_atif_get_notification_params(acpi_handle handle,
size = min(sizeof(params), size);
memcpy(¶ms, info->buffer.pointer, size);
+ DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n",
+ params.flags, params.valid_mask);
params.flags = params.flags & params.valid_mask;
if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) {
@@ -174,10 +190,91 @@ static int radeon_atif_get_notification_params(acpi_handle handle,
}
out:
+ DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n",
+ (n->enabled ? "enabled" : "disabled"),
+ n->command_code);
kfree(info);
return err;
}
+static int radeon_atif_get_sbios_requests(acpi_handle handle,
+ struct atif_sbios_requests *req)
+{
+ union acpi_object *info;
+ size_t size;
+ int count = 0;
+
+ info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, NULL);
+ if (!info)
+ return -EIO;
+
+ size = *(u16 *)info->buffer.pointer;
+ if (size < 0xd) {
+ count = -EINVAL;
+ goto out;
+ }
+ memset(req, 0, sizeof(*req));
+
+ size = min(sizeof(*req), size);
+ memcpy(req, info->buffer.pointer, size);
+ DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending);
+
+ count = hweight32(req->pending);
+
+out:
+ kfree(info);
+ return count;
+}
+
+int radeon_atif_handler(struct radeon_device *rdev,
+ struct acpi_bus_event *event)
+{
+ struct radeon_atif *atif = &rdev->atif;
+ struct atif_sbios_requests req;
+ acpi_handle handle;
+ int count;
+
+ DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n",
+ event->device_class, event->type);
+
+ if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
+ return NOTIFY_DONE;
+
+ if (!atif->notification_cfg.enabled ||
+ event->type != atif->notification_cfg.command_code)
+ /* Not our event */
+ return NOTIFY_DONE;
+
+ /* Check pending SBIOS requests */
+ handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+ count = radeon_atif_get_sbios_requests(handle, &req);
+
+ if (count <= 0)
+ return NOTIFY_DONE;
+
+ DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
+
+ if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
+ struct radeon_encoder *enc = atif->backlight_ctl;
+
+ if (enc) {
+ struct radeon_encoder_atom_dig *dig = enc->enc_priv;
+ dig->backlight_level = req.backlight_level;
+
+ DRM_DEBUG_DRIVER("Changing brightness to %d\n",
+ req.backlight_level);
+
+ atombios_set_panel_brightness(enc);
+
+ backlight_force_update(dig->bl_dev,
+ BACKLIGHT_UPDATE_HOTKEY);
+ }
+ }
+ /* TODO: check other events */
+
+ return NOTIFY_OK;
+}
+
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
@@ -199,6 +296,33 @@ int radeon_acpi_init(struct radeon_device *rdev)
goto out;
}
+ if (atif->notifications.brightness_change) {
+ struct drm_encoder *tmp;
+ struct radeon_encoder *target = NULL;
+
+ /* Find the encoder controlling the brightness */
+ list_for_each_entry(tmp, &rdev->ddev->mode_config.encoder_list,
+ head) {
+ struct radeon_encoder *enc = to_radeon_encoder(tmp);
+ struct radeon_encoder_atom_dig *dig = enc->enc_priv;
+
+ if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) &&
+ dig->bl_dev != NULL) {
+ target = enc;
+ break;
+ }
+ }
+
+ atif->backlight_ctl = target;
+ if (!target) {
+ /* Brightness change notification is enabled, but we
+ * didn't find a backlight controller, this should
+ * never happen.
+ */
+ DRM_ERROR("Cannot find a backlight controller\n");
+ }
+ }
+
if (atif->functions.sbios_requests && !atif->functions.system_params) {
/* XXX check this workraround, if sbios request function is
* present we have to see how it's configured in the system
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.h b/drivers/gpu/drm/radeon/radeon_acpi.h
index a42288d..df1f162 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.h
+++ b/drivers/gpu/drm/radeon/radeon_acpi.h
@@ -24,6 +24,12 @@
#ifndef RADEON_ACPI_H
#define RADEON_ACPI_H
+struct radeon_device;
+struct acpi_bus_event;
+
+int radeon_atif_handler(struct radeon_device *rdev,
+ struct acpi_bus_event *event);
+
/* AMD hw uses four ACPI control methods:
* 1. ATIF
* ARG0: (ACPI_INTEGER) function code
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 5c58d7d..a13b2eb 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -78,11 +78,6 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
goto out;
}
- /* Call ACPI methods */
- acpi_status = radeon_acpi_init(rdev);
- if (acpi_status)
- dev_dbg(&dev->pdev->dev, "Error during ACPI methods call\n");
-
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
@@ -90,6 +85,17 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
r = radeon_modeset_init(rdev);
if (r)
dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
+
+ /* Call ACPI methods: require modeset init
+ * but failure is not fatal
+ */
+ if (!r) {
+ acpi_status = radeon_acpi_init(rdev);
+ if (acpi_status)
+ dev_dbg(&dev->pdev->dev,
+ "Error during ACPI methods call\n");
+ }
+
out:
if (r)
radeon_driver_unload_kms(dev);
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 129ed8e..ce91d62 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -697,6 +697,8 @@ void radeon_panel_mode_fixup(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode);
void atom_rv515_force_tv_scaler(struct radeon_device *rdev, struct radeon_crtc *radeon_crtc);
+void atombios_set_panel_brightness(struct radeon_encoder *radeon_encoder);
+
/* legacy tv */
void radeon_legacy_tv_adjust_crtc_reg(struct drm_encoder *encoder,
uint32_t *h_total_disp, uint32_t *h_sync_strt_wid,
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 5b37e28..8621748 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -22,6 +22,7 @@
*/
#include "drmP.h"
#include "radeon.h"
+#include "radeon_acpi.h"
#include "avivod.h"
#include "atom.h"
#ifdef CONFIG_ACPI
@@ -95,7 +96,8 @@ static int radeon_acpi_event(struct notifier_block *nb,
}
}
- return NOTIFY_OK;
+ /* Check for pending SBIOS requests */
+ return radeon_atif_handler(rdev, entry);
}
#endif
--
1.7.10.4
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