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author | Alex Deucher <alexander.deucher@amd.com> | 2012-08-16 14:07:37 -0400 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2012-09-20 13:10:37 -0400 |
commit | 492b49a2f21a7ce6cb0abce36017daa06036a626 (patch) | |
tree | cfd30f8739e6991aca373174f354ae42a1a5a66b /drivers | |
parent | 48fa412b7451530322cdbe969e404b798c6e204e (diff) | |
download | linux-stable-492b49a2f21a7ce6cb0abce36017daa06036a626.tar.gz linux-stable-492b49a2f21a7ce6cb0abce36017daa06036a626.tar.bz2 linux-stable-492b49a2f21a7ce6cb0abce36017daa06036a626.zip |
drm/radeon: reorganize ATPX support (v2)
- rework the acpi execute code
- User proper parameters for ATPX functions
v2: rebase fixes
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_atpx_handler.c | 170 |
1 files changed, 110 insertions, 60 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c index c1f2671a7b0b..331db7a95f09 100644 --- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c +++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c @@ -26,6 +26,7 @@ struct radeon_atpx_functions { }; struct radeon_atpx { + acpi_handle handle; struct radeon_atpx_functions functions; }; @@ -33,7 +34,6 @@ static struct radeon_atpx_priv { bool atpx_detected; /* handle for device - and atpx */ acpi_handle dhandle; - acpi_handle atpx_handle; struct radeon_atpx atpx; } radeon_atpx_priv; @@ -43,6 +43,16 @@ struct atpx_verify_interface { u32 function_bits; /* supported functions bit vector */ } __packed; +struct atpx_power_control { + u16 size; + u8 dgpu_state; +} __packed; + +struct atpx_mux { + u16 size; + u16 mux; +} __packed; + /** * radeon_atpx_call - call an ATPX method * @@ -123,15 +133,14 @@ static void radeon_atpx_parse_functions(struct radeon_atpx_functions *f, u32 mas * (all asics). * returns 0 on success, error on failure. */ -static int radeon_atpx_verify_interface(acpi_handle handle, - struct radeon_atpx *atpx) +static int radeon_atpx_verify_interface(struct radeon_atpx *atpx) { union acpi_object *info; struct atpx_verify_interface output; size_t size; int err = 0; - info = radeon_atpx_call(handle, ATPX_FUNCTION_VERIFY_INTERFACE, NULL); + info = radeon_atpx_call(atpx->handle, ATPX_FUNCTION_VERIFY_INTERFACE, NULL); if (!info) return -EIO; @@ -157,82 +166,124 @@ out: return err; } -static int radeon_atpx_execute(acpi_handle handle, int cmd_id, u16 value) +static int radeon_atpx_set_discrete_state(struct radeon_atpx *atpx, u8 state) { - acpi_status status; - union acpi_object atpx_arg_elements[2]; - struct acpi_object_list atpx_arg; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - uint8_t buf[4] = {0}; - - if (!handle) - return -EINVAL; - - atpx_arg.count = 2; - atpx_arg.pointer = &atpx_arg_elements[0]; - - atpx_arg_elements[0].type = ACPI_TYPE_INTEGER; - atpx_arg_elements[0].integer.value = cmd_id; - - buf[2] = value & 0xff; - buf[3] = (value >> 8) & 0xff; - - atpx_arg_elements[1].type = ACPI_TYPE_BUFFER; - atpx_arg_elements[1].buffer.length = 4; - atpx_arg_elements[1].buffer.pointer = buf; - - status = acpi_evaluate_object(handle, NULL, &atpx_arg, &buffer); - if (ACPI_FAILURE(status)) { - printk("%s: failed to call ATPX: %s\n", __func__, acpi_format_exception(status)); - return -ENOSYS; + struct acpi_buffer params; + union acpi_object *info; + struct atpx_power_control input; + + if (atpx->functions.power_cntl) { + input.size = 3; + input.dgpu_state = state; + params.length = input.size; + params.pointer = &input; + info = radeon_atpx_call(atpx->handle, + ATPX_FUNCTION_POWER_CONTROL, + ¶ms); + if (!info) + return -EIO; + kfree(info); } - kfree(buffer.pointer); - return 0; } -static int radeon_atpx_set_discrete_state(acpi_handle handle, int state) -{ - return radeon_atpx_execute(handle, ATPX_FUNCTION_POWER_CONTROL, state); -} - -static int radeon_atpx_switch_mux(acpi_handle handle, int mux_id) +static int radeon_atpx_switch_disp_mux(struct radeon_atpx *atpx, u16 mux_id) { - return radeon_atpx_execute(handle, ATPX_FUNCTION_DISPLAY_MUX_CONTROL, mux_id); + struct acpi_buffer params; + union acpi_object *info; + struct atpx_mux input; + + if (atpx->functions.disp_mux_cntl) { + input.size = 4; + input.mux = mux_id; + params.length = input.size; + params.pointer = &input; + info = radeon_atpx_call(atpx->handle, + ATPX_FUNCTION_DISPLAY_MUX_CONTROL, + ¶ms); + if (!info) + return -EIO; + kfree(info); + } + return 0; } -static int radeon_atpx_switch_i2c_mux(acpi_handle handle, int mux_id) +static int radeon_atpx_switch_i2c_mux(struct radeon_atpx *atpx, u16 mux_id) { - return radeon_atpx_execute(handle, ATPX_FUNCTION_I2C_MUX_CONTROL, mux_id); + struct acpi_buffer params; + union acpi_object *info; + struct atpx_mux input; + + if (atpx->functions.i2c_mux_cntl) { + input.size = 4; + input.mux = mux_id; + params.length = input.size; + params.pointer = &input; + info = radeon_atpx_call(atpx->handle, + ATPX_FUNCTION_I2C_MUX_CONTROL, + ¶ms); + if (!info) + return -EIO; + kfree(info); + } + return 0; } -static int radeon_atpx_switch_start(acpi_handle handle, int gpu_id) +static int radeon_atpx_switch_start(struct radeon_atpx *atpx, u16 mux_id) { - return radeon_atpx_execute(handle, - ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION, - gpu_id); + struct acpi_buffer params; + union acpi_object *info; + struct atpx_mux input; + + if (atpx->functions.switch_start) { + input.size = 4; + input.mux = mux_id; + params.length = input.size; + params.pointer = &input; + info = radeon_atpx_call(atpx->handle, + ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION, + ¶ms); + if (!info) + return -EIO; + kfree(info); + } + return 0; } -static int radeon_atpx_switch_end(acpi_handle handle, int gpu_id) +static int radeon_atpx_switch_end(struct radeon_atpx *atpx, u16 mux_id) { - return radeon_atpx_execute(handle, - ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION, - gpu_id); + struct acpi_buffer params; + union acpi_object *info; + struct atpx_mux input; + + if (atpx->functions.switch_end) { + input.size = 4; + input.mux = mux_id; + params.length = input.size; + params.pointer = &input; + info = radeon_atpx_call(atpx->handle, + ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION, + ¶ms); + if (!info) + return -EIO; + kfree(info); + } + return 0; } static int radeon_atpx_switchto(enum vga_switcheroo_client_id id) { - int gpu_id; + u16 gpu_id; if (id == VGA_SWITCHEROO_IGD) gpu_id = ATPX_INTEGRATED_GPU; else gpu_id = ATPX_DISCRETE_GPU; - 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); + radeon_atpx_switch_start(&radeon_atpx_priv.atpx, gpu_id); + radeon_atpx_switch_disp_mux(&radeon_atpx_priv.atpx, gpu_id); + radeon_atpx_switch_i2c_mux(&radeon_atpx_priv.atpx, gpu_id); + radeon_atpx_switch_end(&radeon_atpx_priv.atpx, gpu_id); return 0; } @@ -244,7 +295,7 @@ static int radeon_atpx_power_state(enum vga_switcheroo_client_id id, if (id == VGA_SWITCHEROO_IGD) return 0; - radeon_atpx_set_discrete_state(radeon_atpx_priv.atpx_handle, state); + radeon_atpx_set_discrete_state(&radeon_atpx_priv.atpx, state); return 0; } @@ -262,15 +313,14 @@ static bool radeon_atpx_pci_probe_handle(struct pci_dev *pdev) return false; radeon_atpx_priv.dhandle = dhandle; - radeon_atpx_priv.atpx_handle = atpx_handle; + radeon_atpx_priv.atpx.handle = atpx_handle; return true; } static int radeon_atpx_init(void) { /* set up the ATPX handle */ - return radeon_atpx_verify_interface(radeon_atpx_priv.atpx_handle, - &radeon_atpx_priv.atpx); + return radeon_atpx_verify_interface(&radeon_atpx_priv.atpx); } static int radeon_atpx_get_client_id(struct pci_dev *pdev) @@ -303,7 +353,7 @@ static bool radeon_atpx_detect(void) } if (has_atpx && vga_count == 2) { - acpi_get_name(radeon_atpx_priv.atpx_handle, ACPI_FULL_PATHNAME, &buffer); + acpi_get_name(radeon_atpx_priv.atpx.handle, ACPI_FULL_PATHNAME, &buffer); printk(KERN_INFO "VGA switcheroo: detected switching method %s handle\n", acpi_method_name); radeon_atpx_priv.atpx_detected = true; |