Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 1 | #include <linux/pci.h> |
| 2 | #include <linux/acpi.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 3 | #include <linux/slab.h> |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 4 | #include <acpi/acpi_drivers.h> |
| 5 | #include <acpi/acpi_bus.h> |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 6 | #include <acpi/video.h> |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 7 | #include <acpi/acpi.h> |
| 8 | #include <linux/mxm-wmi.h> |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 9 | |
| 10 | #include "drmP.h" |
| 11 | #include "drm.h" |
| 12 | #include "drm_sarea.h" |
| 13 | #include "drm_crtc_helper.h" |
| 14 | #include "nouveau_drv.h" |
| 15 | #include "nouveau_drm.h" |
| 16 | #include "nv50_display.h" |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 17 | #include "nouveau_connector.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 18 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 19 | #include <linux/vga_switcheroo.h> |
| 20 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 21 | #define NOUVEAU_DSM_LED 0x02 |
| 22 | #define NOUVEAU_DSM_LED_STATE 0x00 |
| 23 | #define NOUVEAU_DSM_LED_OFF 0x10 |
| 24 | #define NOUVEAU_DSM_LED_STAMINA 0x11 |
| 25 | #define NOUVEAU_DSM_LED_SPEED 0x12 |
| 26 | |
| 27 | #define NOUVEAU_DSM_POWER 0x03 |
| 28 | #define NOUVEAU_DSM_POWER_STATE 0x00 |
| 29 | #define NOUVEAU_DSM_POWER_SPEED 0x01 |
| 30 | #define NOUVEAU_DSM_POWER_STAMINA 0x02 |
| 31 | |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 32 | #define NOUVEAU_DSM_OPTIMUS_FN 0x1A |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 33 | #define NOUVEAU_DSM_OPTIMUS_ARGS 0x03000001 |
| 34 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 35 | static struct nouveau_dsm_priv { |
| 36 | bool dsm_detected; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 37 | bool optimus_detected; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 38 | acpi_handle dhandle; |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 39 | acpi_handle rom_handle; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 40 | } nouveau_dsm_priv; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 41 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 42 | #define NOUVEAU_DSM_HAS_MUX 0x1 |
| 43 | #define NOUVEAU_DSM_HAS_OPT 0x2 |
| 44 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 45 | static const char nouveau_dsm_muid[] = { |
| 46 | 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D, |
| 47 | 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4, |
| 48 | }; |
| 49 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 50 | static const char nouveau_op_dsm_muid[] = { |
| 51 | 0xF8, 0xD8, 0x86, 0xA4, 0xDA, 0x0B, 0x1B, 0x47, |
| 52 | 0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0, |
| 53 | }; |
| 54 | |
| 55 | static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *result) |
| 56 | { |
| 57 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 58 | struct acpi_object_list input; |
| 59 | union acpi_object params[4]; |
| 60 | union acpi_object *obj; |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 61 | int i, err; |
| 62 | char args_buff[4]; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 63 | |
| 64 | input.count = 4; |
| 65 | input.pointer = params; |
| 66 | params[0].type = ACPI_TYPE_BUFFER; |
| 67 | params[0].buffer.length = sizeof(nouveau_op_dsm_muid); |
| 68 | params[0].buffer.pointer = (char *)nouveau_op_dsm_muid; |
| 69 | params[1].type = ACPI_TYPE_INTEGER; |
| 70 | params[1].integer.value = 0x00000100; |
| 71 | params[2].type = ACPI_TYPE_INTEGER; |
| 72 | params[2].integer.value = func; |
| 73 | params[3].type = ACPI_TYPE_BUFFER; |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 74 | params[3].buffer.length = 4; |
| 75 | /* ACPI is little endian, AABBCCDD becomes {DD,CC,BB,AA} */ |
| 76 | for (i = 0; i < 4; i++) |
| 77 | args_buff[i] = (arg >> i * 8) & 0xFF; |
| 78 | params[3].buffer.pointer = args_buff; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 79 | |
| 80 | err = acpi_evaluate_object(handle, "_DSM", &input, &output); |
| 81 | if (err) { |
| 82 | printk(KERN_INFO "failed to evaluate _DSM: %d\n", err); |
| 83 | return err; |
| 84 | } |
| 85 | |
| 86 | obj = (union acpi_object *)output.pointer; |
| 87 | |
| 88 | if (obj->type == ACPI_TYPE_INTEGER) |
| 89 | if (obj->integer.value == 0x80000002) { |
| 90 | return -ENODEV; |
| 91 | } |
| 92 | |
| 93 | if (obj->type == ACPI_TYPE_BUFFER) { |
| 94 | if (obj->buffer.length == 4 && result) { |
| 95 | *result = 0; |
| 96 | *result |= obj->buffer.pointer[0]; |
| 97 | *result |= (obj->buffer.pointer[1] << 8); |
| 98 | *result |= (obj->buffer.pointer[2] << 16); |
| 99 | *result |= (obj->buffer.pointer[3] << 24); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | kfree(output.pointer); |
| 104 | return 0; |
| 105 | } |
| 106 | |
Francisco Jerez | 6e86e04 | 2010-07-03 18:36:39 +0200 | [diff] [blame] | 107 | static int nouveau_dsm(acpi_handle handle, int func, int arg, uint32_t *result) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 108 | { |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 109 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 110 | struct acpi_object_list input; |
| 111 | union acpi_object params[4]; |
| 112 | union acpi_object *obj; |
| 113 | int err; |
| 114 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 115 | input.count = 4; |
| 116 | input.pointer = params; |
| 117 | params[0].type = ACPI_TYPE_BUFFER; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 118 | params[0].buffer.length = sizeof(nouveau_dsm_muid); |
| 119 | params[0].buffer.pointer = (char *)nouveau_dsm_muid; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 120 | params[1].type = ACPI_TYPE_INTEGER; |
| 121 | params[1].integer.value = 0x00000102; |
| 122 | params[2].type = ACPI_TYPE_INTEGER; |
| 123 | params[2].integer.value = func; |
| 124 | params[3].type = ACPI_TYPE_INTEGER; |
| 125 | params[3].integer.value = arg; |
| 126 | |
| 127 | err = acpi_evaluate_object(handle, "_DSM", &input, &output); |
| 128 | if (err) { |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 129 | printk(KERN_INFO "failed to evaluate _DSM: %d\n", err); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 130 | return err; |
| 131 | } |
| 132 | |
| 133 | obj = (union acpi_object *)output.pointer; |
| 134 | |
| 135 | if (obj->type == ACPI_TYPE_INTEGER) |
| 136 | if (obj->integer.value == 0x80000002) |
| 137 | return -ENODEV; |
| 138 | |
| 139 | if (obj->type == ACPI_TYPE_BUFFER) { |
| 140 | if (obj->buffer.length == 4 && result) { |
| 141 | *result = 0; |
| 142 | *result |= obj->buffer.pointer[0]; |
| 143 | *result |= (obj->buffer.pointer[1] << 8); |
| 144 | *result |= (obj->buffer.pointer[2] << 16); |
| 145 | *result |= (obj->buffer.pointer[3] << 24); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | kfree(output.pointer); |
| 150 | return 0; |
| 151 | } |
| 152 | |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 153 | /* Returns 1 if a DSM function is usable and 0 otherwise */ |
| 154 | static int nouveau_test_dsm(acpi_handle test_handle, |
| 155 | int (*dsm_func)(acpi_handle, int, int, uint32_t *), |
| 156 | int sfnc) |
| 157 | { |
| 158 | u32 result = 0; |
| 159 | |
| 160 | /* Function 0 returns a Buffer containing available functions. The args |
| 161 | * parameter is ignored for function 0, so just put 0 in it */ |
| 162 | if (dsm_func(test_handle, 0, 0, &result)) |
| 163 | return 0; |
| 164 | |
| 165 | /* ACPI Spec v4 9.14.1: if bit 0 is zero, no function is supported. If |
| 166 | * the n-th bit is enabled, function n is supported */ |
| 167 | return result & 1 && result & (1 << sfnc); |
| 168 | } |
| 169 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 170 | static int nouveau_dsm_switch_mux(acpi_handle handle, int mux_id) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 171 | { |
Dave Airlie | 000703f | 2011-05-09 11:40:25 +1000 | [diff] [blame] | 172 | mxm_wmi_call_mxmx(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 173 | mxm_wmi_call_mxds(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 174 | return nouveau_dsm(handle, NOUVEAU_DSM_LED, mux_id, NULL); |
| 175 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 176 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 177 | static int nouveau_dsm_set_discrete_state(acpi_handle handle, enum vga_switcheroo_state state) |
| 178 | { |
| 179 | int arg; |
| 180 | if (state == VGA_SWITCHEROO_ON) |
| 181 | arg = NOUVEAU_DSM_POWER_SPEED; |
| 182 | else |
| 183 | arg = NOUVEAU_DSM_POWER_STAMINA; |
| 184 | nouveau_dsm(handle, NOUVEAU_DSM_POWER, arg, NULL); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 185 | return 0; |
| 186 | } |
| 187 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 188 | static int nouveau_dsm_switchto(enum vga_switcheroo_client_id id) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 189 | { |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 190 | /* perhaps the _DSM functions are mutually exclusive, but prepare for |
| 191 | * the future */ |
| 192 | if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) |
| 193 | return 0; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 194 | if (id == VGA_SWITCHEROO_IGD) |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 195 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_STAMINA); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 196 | else |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 197 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_SPEED); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 198 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 199 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 200 | static int nouveau_dsm_power_state(enum vga_switcheroo_client_id id, |
| 201 | enum vga_switcheroo_state state) |
| 202 | { |
| 203 | if (id == VGA_SWITCHEROO_IGD) |
| 204 | return 0; |
| 205 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 206 | /* Optimus laptops have the card already disabled in |
| 207 | * nouveau_switcheroo_set_state */ |
| 208 | if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) |
| 209 | return 0; |
| 210 | |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 211 | return nouveau_dsm_set_discrete_state(nouveau_dsm_priv.dhandle, state); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | static int nouveau_dsm_init(void) |
| 215 | { |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | static int nouveau_dsm_get_client_id(struct pci_dev *pdev) |
| 220 | { |
Dave Airlie | d1fbd92 | 2010-12-06 12:56:44 +1000 | [diff] [blame] | 221 | /* easy option one - intel vendor ID means Integrated */ |
| 222 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 223 | return VGA_SWITCHEROO_IGD; |
Dave Airlie | d1fbd92 | 2010-12-06 12:56:44 +1000 | [diff] [blame] | 224 | |
| 225 | /* is this device on Bus 0? - this may need improving */ |
| 226 | if (pdev->bus->number == 0) |
| 227 | return VGA_SWITCHEROO_IGD; |
| 228 | |
| 229 | return VGA_SWITCHEROO_DIS; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | static struct vga_switcheroo_handler nouveau_dsm_handler = { |
| 233 | .switchto = nouveau_dsm_switchto, |
| 234 | .power_state = nouveau_dsm_power_state, |
| 235 | .init = nouveau_dsm_init, |
| 236 | .get_client_id = nouveau_dsm_get_client_id, |
| 237 | }; |
| 238 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 239 | static int nouveau_dsm_pci_probe(struct pci_dev *pdev) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 240 | { |
| 241 | acpi_handle dhandle, nvidia_handle; |
| 242 | acpi_status status; |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 243 | int retval = 0; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 244 | |
| 245 | dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); |
| 246 | if (!dhandle) |
| 247 | return false; |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 248 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 249 | status = acpi_get_handle(dhandle, "_DSM", &nvidia_handle); |
| 250 | if (ACPI_FAILURE(status)) { |
| 251 | return false; |
| 252 | } |
| 253 | |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 254 | if (nouveau_test_dsm(dhandle, nouveau_dsm, NOUVEAU_DSM_POWER)) |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 255 | retval |= NOUVEAU_DSM_HAS_MUX; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 256 | |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 257 | if (nouveau_test_dsm(dhandle, nouveau_optimus_dsm, |
| 258 | NOUVEAU_DSM_OPTIMUS_FN)) |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 259 | retval |= NOUVEAU_DSM_HAS_OPT; |
| 260 | |
| 261 | if (retval) |
| 262 | nouveau_dsm_priv.dhandle = dhandle; |
| 263 | |
| 264 | return retval; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 265 | } |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 266 | |
| 267 | static bool nouveau_dsm_detect(void) |
| 268 | { |
| 269 | char acpi_method_name[255] = { 0 }; |
| 270 | struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; |
| 271 | struct pci_dev *pdev = NULL; |
| 272 | int has_dsm = 0; |
Dave Airlie | addde4e | 2012-05-02 20:26:24 +0100 | [diff] [blame] | 273 | int has_optimus = 0; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 274 | int vga_count = 0; |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 275 | bool guid_valid; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 276 | int retval; |
| 277 | bool ret = false; |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 278 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 279 | /* lookup the MXM GUID */ |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 280 | guid_valid = mxm_wmi_supported(); |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 281 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 282 | if (guid_valid) |
| 283 | printk("MXM: GUID detected in BIOS\n"); |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 284 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 285 | /* now do DSM detection */ |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 286 | while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { |
| 287 | vga_count++; |
| 288 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 289 | retval = nouveau_dsm_pci_probe(pdev); |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 290 | if (retval & NOUVEAU_DSM_HAS_MUX) |
| 291 | has_dsm |= 1; |
| 292 | if (retval & NOUVEAU_DSM_HAS_OPT) |
| 293 | has_optimus = 1; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 294 | } |
| 295 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 296 | if (vga_count == 2 && has_dsm && guid_valid) { |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 297 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, |
| 298 | &buffer); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 299 | printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n", |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 300 | acpi_method_name); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 301 | nouveau_dsm_priv.dsm_detected = true; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 302 | ret = true; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 303 | } |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 304 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 305 | if (has_optimus == 1) { |
| 306 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, |
| 307 | &buffer); |
| 308 | printk(KERN_INFO "VGA switcheroo: detected Optimus DSM method %s handle\n", |
| 309 | acpi_method_name); |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 310 | nouveau_dsm_priv.optimus_detected = true; |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 311 | ret = true; |
| 312 | } |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 313 | |
| 314 | return ret; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | void nouveau_register_dsm_handler(void) |
| 318 | { |
| 319 | bool r; |
| 320 | |
| 321 | r = nouveau_dsm_detect(); |
| 322 | if (!r) |
| 323 | return; |
| 324 | |
| 325 | vga_switcheroo_register_handler(&nouveau_dsm_handler); |
| 326 | } |
| 327 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 328 | /* Must be called for Optimus models before the card can be turned off */ |
| 329 | void nouveau_switcheroo_optimus_dsm(void) |
| 330 | { |
| 331 | u32 result = 0; |
| 332 | if (!nouveau_dsm_priv.optimus_detected) |
| 333 | return; |
| 334 | |
| 335 | nouveau_optimus_dsm(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_OPTIMUS_FN, |
| 336 | NOUVEAU_DSM_OPTIMUS_ARGS, &result); |
| 337 | } |
| 338 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 339 | void nouveau_unregister_dsm_handler(void) |
| 340 | { |
| 341 | vga_switcheroo_unregister_handler(); |
| 342 | } |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 343 | |
| 344 | /* retrieve the ROM in 4k blocks */ |
| 345 | static int nouveau_rom_call(acpi_handle rom_handle, uint8_t *bios, |
| 346 | int offset, int len) |
| 347 | { |
| 348 | acpi_status status; |
| 349 | union acpi_object rom_arg_elements[2], *obj; |
| 350 | struct acpi_object_list rom_arg; |
| 351 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; |
| 352 | |
| 353 | rom_arg.count = 2; |
| 354 | rom_arg.pointer = &rom_arg_elements[0]; |
| 355 | |
| 356 | rom_arg_elements[0].type = ACPI_TYPE_INTEGER; |
| 357 | rom_arg_elements[0].integer.value = offset; |
| 358 | |
| 359 | rom_arg_elements[1].type = ACPI_TYPE_INTEGER; |
| 360 | rom_arg_elements[1].integer.value = len; |
| 361 | |
| 362 | status = acpi_evaluate_object(rom_handle, NULL, &rom_arg, &buffer); |
| 363 | if (ACPI_FAILURE(status)) { |
| 364 | printk(KERN_INFO "failed to evaluate ROM got %s\n", acpi_format_exception(status)); |
| 365 | return -ENODEV; |
| 366 | } |
| 367 | obj = (union acpi_object *)buffer.pointer; |
| 368 | memcpy(bios+offset, obj->buffer.pointer, len); |
| 369 | kfree(buffer.pointer); |
| 370 | return len; |
| 371 | } |
| 372 | |
| 373 | bool nouveau_acpi_rom_supported(struct pci_dev *pdev) |
| 374 | { |
| 375 | acpi_status status; |
| 376 | acpi_handle dhandle, rom_handle; |
| 377 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 378 | if (!nouveau_dsm_priv.dsm_detected && !nouveau_dsm_priv.optimus_detected) |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 379 | return false; |
| 380 | |
| 381 | dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); |
| 382 | if (!dhandle) |
| 383 | return false; |
| 384 | |
| 385 | status = acpi_get_handle(dhandle, "_ROM", &rom_handle); |
| 386 | if (ACPI_FAILURE(status)) |
| 387 | return false; |
| 388 | |
| 389 | nouveau_dsm_priv.rom_handle = rom_handle; |
| 390 | return true; |
| 391 | } |
| 392 | |
| 393 | int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len) |
| 394 | { |
| 395 | return nouveau_rom_call(nouveau_dsm_priv.rom_handle, bios, offset, len); |
| 396 | } |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 397 | |
| 398 | int |
| 399 | nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) |
| 400 | { |
| 401 | struct nouveau_connector *nv_connector = nouveau_connector(connector); |
| 402 | struct acpi_device *acpidev; |
| 403 | acpi_handle handle; |
| 404 | int type, ret; |
| 405 | void *edid; |
| 406 | |
| 407 | switch (connector->connector_type) { |
| 408 | case DRM_MODE_CONNECTOR_LVDS: |
| 409 | case DRM_MODE_CONNECTOR_eDP: |
| 410 | type = ACPI_VIDEO_DISPLAY_LCD; |
| 411 | break; |
| 412 | default: |
| 413 | return -EINVAL; |
| 414 | } |
| 415 | |
| 416 | handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); |
| 417 | if (!handle) |
| 418 | return -ENODEV; |
| 419 | |
| 420 | ret = acpi_bus_get_device(handle, &acpidev); |
| 421 | if (ret) |
| 422 | return -ENODEV; |
| 423 | |
| 424 | ret = acpi_video_get_edid(acpidev, type, -1, &edid); |
| 425 | if (ret < 0) |
| 426 | return ret; |
| 427 | |
Ben Skeggs | 24b102d | 2010-09-10 15:33:11 +1000 | [diff] [blame] | 428 | nv_connector->edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL); |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 429 | return 0; |
| 430 | } |