From patchwork Thu Oct 7 23:01:13 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse Barnes X-Patchwork-Id: 239191 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o97N5Z3u028906 for ; Thu, 7 Oct 2010 23:05:58 GMT Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B559BA099C for ; Thu, 7 Oct 2010 16:05:34 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from cpoproxy3-pub.bluehost.com (cpoproxy3-pub.bluehost.com [67.222.54.6]) by gabe.freedesktop.org (Postfix) with SMTP id 045A6A09BB for ; Thu, 7 Oct 2010 16:02:42 -0700 (PDT) Received: (qmail 11809 invoked by uid 0); 7 Oct 2010 23:02:42 -0000 Received: from unknown (HELO box514.bluehost.com) (74.220.219.114) by cpoproxy3.bluehost.com with SMTP; 7 Oct 2010 23:02:42 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To:References:X-Identified-User; b=NOtYNLaOwlTc1khH4DHVtefuV7Nas+KB9ALwhCNEUV1trOBg8N1gxgQaGOBbY/292K6xH5pFNSM32I8a4pWRkd8kXqO1AapZcrXGP/qmcuoxyC3ukkRavweoM3UjHQV1; Received: from c-67-174-193-198.hsd1.ca.comcast.net ([67.174.193.198] helo=localhost.localdomain) by box514.bluehost.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.69) (envelope-from ) id 1P3zU1-0002wH-Fr; Thu, 07 Oct 2010 17:02:41 -0600 From: Jesse Barnes To: intel-gfx@lists.freedesktop.org Date: Thu, 7 Oct 2010 16:01:13 -0700 Message-Id: <1286492485-18145-9-git-send-email-jbarnes@virtuousgeek.org> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1286492485-18145-1-git-send-email-jbarnes@virtuousgeek.org> References: <1286492485-18145-1-git-send-email-jbarnes@virtuousgeek.org> X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.174.193.198 authed with jbarnes@virtuousgeek.org} Subject: [Intel-gfx] [PATCH 08/20] drm/i915: add _DSM support X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Thu, 07 Oct 2010 23:05:58 +0000 (UTC) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index f6e98dd..fdc833d 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -35,6 +35,8 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \ i915-$(CONFIG_COMPAT) += i915_ioc32.o +i915-$(CONFIG_ACPI) += intel_acpi.o + obj-$(CONFIG_DRM_I915) += i915.o CFLAGS_i915_trace_points.o := -I$(src) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 726c373..778c01c 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1244,6 +1244,8 @@ static int i915_load_modeset_init(struct drm_device *dev, if (ret) goto cleanup_ringbuffer; + intel_register_dsm_handler(); + ret = vga_switcheroo_register_client(dev->pdev, i915_switcheroo_set_state, i915_switcheroo_can_switch); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 73ad8bf..e4ffcd3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1136,6 +1136,15 @@ static inline void intel_opregion_gse_intr(struct drm_device *dev) { return; } static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; } #endif +/* intel_acpi.c */ +#ifdef CONFIG_ACPI +extern void intel_register_dsm_handler(void); +extern void intel_unregister_dsm_handler(void); +#else +static inline void intel_register_dsm_handler(void) { return; } +static inline void intel_unregister_dsm_handler(void) { return; } +#endif /* CONFIG_ACPI */ + /* modesetting */ extern void intel_modeset_init(struct drm_device *dev); extern void intel_modeset_cleanup(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_acpi.c b/drivers/gpu/drm/i915/intel_acpi.c new file mode 100644 index 0000000..c68d496 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_acpi.c @@ -0,0 +1,290 @@ +/* + * Intel ACPI functions + * + * _DSM related code stolen from nouveau_acpi.c. + */ +#include +#include +#include +#include + +#include "drmP.h" + +#define INTEL_DSM_REVISION_ID 1 /* For Calpella anyway... */ + +#define INTEL_DSM_FN_SUPPORTED_FUNCTIONS 0 /* No args */ +#define INTEL_DSM_FN_PLATFORM_MUX_INFO 1 /* No args */ + +static struct intel_dsm_priv { + bool dsm_detected; + acpi_handle dhandle; +} intel_dsm_priv; + +static const u8 intel_dsm_guid[] = { + 0xd3, 0x73, 0xd8, 0x7e, + 0xd0, 0xc2, + 0x4f, 0x4e, + 0xa8, 0x54, + 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c +}; + +static int intel_dsm(acpi_handle handle, int func, int arg, u32 *result) +{ + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_object_list input; + union acpi_object params[4]; + union acpi_object *obj; + int ret = 0; + + input.count = 4; + input.pointer = params; + params[0].type = ACPI_TYPE_BUFFER; + params[0].buffer.length = sizeof(intel_dsm_guid); + params[0].buffer.pointer = (char *)intel_dsm_guid; + params[1].type = ACPI_TYPE_INTEGER; + params[1].integer.value = INTEL_DSM_REVISION_ID; + params[2].type = ACPI_TYPE_INTEGER; + params[2].integer.value = func; + params[3].type = ACPI_TYPE_INTEGER; + params[3].integer.value = arg; + + ret = acpi_evaluate_object(handle, "_DSM", &input, &output); + if (ret) { + DRM_DEBUG_DRIVER("failed to evaluate _DSM: %d\n", ret); + goto out; + } + + obj = (union acpi_object *)output.pointer; + + if (obj->type == ACPI_TYPE_INTEGER) + if (obj->integer.value == 0x80000002) { + ret = -ENODEV; + goto out; + } + + if (obj->type == ACPI_TYPE_BUFFER) { + if (obj->buffer.length == 4 && result) { + *result = 0; + *result |= obj->buffer.pointer[0]; + *result |= (obj->buffer.pointer[1] << 8); + *result |= (obj->buffer.pointer[2] << 16); + *result |= (obj->buffer.pointer[3] << 24); + } + } + + if (*result == 0x80000002) + ret = -ENODEV; + +out: + kfree(output.pointer); + return ret; +} + +static char *intel_dsm_port_name(u8 id) +{ + switch (id) { + case 0: + return "Reserved"; + case 1: + return "Analog VGA"; + case 2: + return "LVDS"; + case 3: + return "Reserved"; + case 4: + return "HDMI/DVI_B"; + case 5: + return "HDMI/DVI_C"; + case 6: + return "HDMI/DVI_D"; + case 7: + return "DisplayPort_A"; + case 8: + return "DisplayPort_B"; + case 9: + return "DisplayPort_C"; + case 0xa: + return "DisplayPort_D"; + case 0xb: + case 0xc: + case 0xd: + return "Reserved"; + case 0xe: + return "WiDi"; + default: + return "bad type"; + } +} + +static char *intel_dsm_mux_type(u8 type) +{ + switch (type) { + case 0: + return "unknown"; + case 1: + return "No MUX, iGPU only"; + case 2: + return "No MUX, dGPU only"; + case 3: + return "MUXed between iGPU and dGPU"; + default: + return "bad type"; + } +} + +static void intel_dsm_platform_mux_info(void) +{ + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_object_list input; + union acpi_object params[4]; + union acpi_object *pkg; + int i, ret; + + input.count = 4; + input.pointer = params; + params[0].type = ACPI_TYPE_BUFFER; + params[0].buffer.length = sizeof(intel_dsm_guid); + params[0].buffer.pointer = (char *)intel_dsm_guid; + params[1].type = ACPI_TYPE_INTEGER; + params[1].integer.value = INTEL_DSM_REVISION_ID; + params[2].type = ACPI_TYPE_INTEGER; + params[2].integer.value = INTEL_DSM_FN_PLATFORM_MUX_INFO; + params[3].type = ACPI_TYPE_INTEGER; + params[3].integer.value = 0; + + ret = acpi_evaluate_object(intel_dsm_priv.dhandle, "_DSM", &input, + &output); + if (ret) { + DRM_DEBUG_DRIVER("failed to evaluate _DSM: %d\n", ret); + goto out; + } + + pkg = (union acpi_object *)output.pointer; + + if (pkg->type == ACPI_TYPE_PACKAGE) { + union acpi_object *connector_count = &pkg->package.elements[0]; + DRM_DEBUG_DRIVER("MUX info connectors: %lld\n", + (unsigned long long)connector_count->integer.value); + for (i = 1; i < pkg->package.count; i++) { + union acpi_object *obj = &pkg->package.elements[i]; + union acpi_object *connector_id = + &obj->package.elements[0]; + union acpi_object *info = &obj->package.elements[1]; + DRM_DEBUG_DRIVER("Connector id: 0x%016llx\n", + (unsigned long long)connector_id->integer.value); + DRM_DEBUG_DRIVER(" port id: %s\n", + intel_dsm_port_name(info->buffer.pointer[0])); + DRM_DEBUG_DRIVER(" display mux info: %s\n", + intel_dsm_mux_type(info->buffer.pointer[1])); + DRM_DEBUG_DRIVER(" aux/dc mux info: %s\n", + intel_dsm_mux_type(info->buffer.pointer[2])); + DRM_DEBUG_DRIVER(" hpd mux info: %s\n", + intel_dsm_mux_type(info->buffer.pointer[3])); + } + } else { + DRM_ERROR("MUX INFO call failed\n"); + } + +out: + kfree(output.pointer); +} + +static int intel_dsm_switchto(enum vga_switcheroo_client_id id) +{ + return 0; +} + +static int intel_dsm_power_state(enum vga_switcheroo_client_id id, + enum vga_switcheroo_state state) +{ + return 0; +} + +static int intel_dsm_init(void) +{ + return 0; +} + +static int intel_dsm_get_client_id(struct pci_dev *pdev) +{ + if (intel_dsm_priv.dhandle == DEVICE_ACPI_HANDLE(&pdev->dev)) + return VGA_SWITCHEROO_IGD; + else + return VGA_SWITCHEROO_DIS; +} + +static struct vga_switcheroo_handler intel_dsm_handler = { + .switchto = intel_dsm_switchto, + .power_state = intel_dsm_power_state, + .init = intel_dsm_init, + .get_client_id = intel_dsm_get_client_id, +}; + +static bool intel_dsm_pci_probe(struct pci_dev *pdev) +{ + acpi_handle dhandle, intel_handle; + acpi_status status; + int ret; + u32 result; + + dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); + if (!dhandle) + return false; + + status = acpi_get_handle(dhandle, "_DSM", &intel_handle); + if (ACPI_FAILURE(status)) { + DRM_ERROR("no _DSM method for intel device\n"); + return false; + } + + ret = intel_dsm(dhandle, INTEL_DSM_FN_SUPPORTED_FUNCTIONS, 0, &result); + if (ret < 0) { + DRM_ERROR("failed to get supported _DSM functions\n"); + return false; + } + + intel_dsm_priv.dhandle = dhandle; + + intel_dsm_platform_mux_info(); + return true; +} + +static bool intel_dsm_detect(void) +{ + char acpi_method_name[255] = { 0 }; + struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; + struct pci_dev *pdev = NULL; + int has_dsm = 0; + int vga_count = 0; + + while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { + vga_count++; + + has_dsm |= (intel_dsm_pci_probe(pdev) == true); + } + + if (vga_count == 2 && has_dsm) { + acpi_get_name(intel_dsm_priv.dhandle, ACPI_FULL_PATHNAME, &buffer); + DRM_DEBUG_DRIVER("VGA switcheroo: detected DSM switching method %s handle\n", + acpi_method_name); + intel_dsm_priv.dsm_detected = true; + return true; + } + return false; +} + +void intel_register_dsm_handler(void) +{ + bool r; + + r = intel_dsm_detect(); + if (!r) + return; + + vga_switcheroo_register_handler(&intel_dsm_handler); +} + +void intel_unregister_dsm_handler(void) +{ + vga_switcheroo_unregister_handler(); +} diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6903341..8d7409e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6126,6 +6126,9 @@ void intel_modeset_cleanup(struct drm_device *dev) drm_kms_helper_poll_fini(dev); mutex_lock(&dev->struct_mutex); + intel_unregister_dsm_handler(); + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { /* Skip inactive CRTCs */ if (!crtc->fb)