diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_volt.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_volt.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_volt.c b/drivers/gpu/drm/nouveau/nouveau_volt.c deleted file mode 100644 index 04fdc00a67d..00000000000 --- a/drivers/gpu/drm/nouveau/nouveau_volt.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Copyright 2010 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: Ben Skeggs - */ - -#include "drmP.h" - -#include "nouveau_drv.h" -#include "nouveau_pm.h" - -static const enum dcb_gpio_tag vidtag[] = { 0x04, 0x05, 0x06, 0x1a }; -static int nr_vidtag = sizeof(vidtag) / sizeof(vidtag[0]); - -int -nouveau_voltage_gpio_get(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *gpio = &dev_priv->engine.gpio; - struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage; - u8 vid = 0; - int i; - - for (i = 0; i < nr_vidtag; i++) { - if (!(volt->vid_mask & (1 << i))) - continue; - - vid |= gpio->get(dev, vidtag[i]) << i; - } - - return nouveau_volt_lvl_lookup(dev, vid); -} - -int -nouveau_voltage_gpio_set(struct drm_device *dev, int voltage) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *gpio = &dev_priv->engine.gpio; - struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage; - int vid, i; - - vid = nouveau_volt_vid_lookup(dev, voltage); - if (vid < 0) - return vid; - - for (i = 0; i < nr_vidtag; i++) { - if (!(volt->vid_mask & (1 << i))) - continue; - - gpio->set(dev, vidtag[i], !!(vid & (1 << i))); - } - - return 0; -} - -int -nouveau_volt_vid_lookup(struct drm_device *dev, int voltage) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage; - int i; - - for (i = 0; i < volt->nr_level; i++) { - if (volt->level[i].voltage == voltage) - return volt->level[i].vid; - } - - return -ENOENT; -} - -int -nouveau_volt_lvl_lookup(struct drm_device *dev, int vid) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage; - int i; - - for (i = 0; i < volt->nr_level; i++) { - if (volt->level[i].vid == vid) - return volt->level[i].voltage; - } - - return -ENOENT; -} - -void -nouveau_volt_init(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_pm_engine *pm = &dev_priv->engine.pm; - struct nouveau_pm_voltage *voltage = &pm->voltage; - struct nvbios *bios = &dev_priv->vbios; - struct bit_entry P; - u8 *volt = NULL, *entry; - int i, headerlen, recordlen, entries, vidmask, vidshift; - - if (bios->type == NVBIOS_BIT) { - if (bit_table(dev, 'P', &P)) - return; - - if (P.version == 1) - volt = ROMPTR(bios, P.data[16]); - else - if (P.version == 2) - volt = ROMPTR(bios, P.data[12]); - else { - NV_WARN(dev, "unknown volt for BIT P %d\n", P.version); - } - } else { - if (bios->data[bios->offset + 6] < 0x27) { - NV_DEBUG(dev, "BMP version too old for voltage\n"); - return; - } - - volt = ROMPTR(bios, bios->data[bios->offset + 0x98]); - } - - if (!volt) { - NV_DEBUG(dev, "voltage table pointer invalid\n"); - return; - } - - switch (volt[0]) { - case 0x10: - case 0x11: - case 0x12: - headerlen = 5; - recordlen = volt[1]; - entries = volt[2]; - vidshift = 0; - vidmask = volt[4]; - break; - case 0x20: - headerlen = volt[1]; - recordlen = volt[3]; - entries = volt[2]; - vidshift = 0; /* could be vidshift like 0x30? */ - vidmask = volt[5]; - break; - case 0x30: - headerlen = volt[1]; - recordlen = volt[2]; - entries = volt[3]; - vidshift = hweight8(volt[5]); - vidmask = volt[4]; - break; - default: - NV_WARN(dev, "voltage table 0x%02x unknown\n", volt[0]); - return; - } - - /* validate vid mask */ - voltage->vid_mask = vidmask; - if (!voltage->vid_mask) - return; - - i = 0; - while (vidmask) { - if (i > nr_vidtag) { - NV_DEBUG(dev, "vid bit %d unknown\n", i); - return; - } - - if (!nouveau_bios_gpio_entry(dev, vidtag[i])) { - NV_DEBUG(dev, "vid bit %d has no gpio tag\n", i); - return; - } - - vidmask >>= 1; - i++; - } - - /* parse vbios entries into common format */ - voltage->level = kcalloc(entries, sizeof(*voltage->level), GFP_KERNEL); - if (!voltage->level) - return; - - entry = volt + headerlen; - for (i = 0; i < entries; i++, entry += recordlen) { - voltage->level[i].voltage = entry[0]; - voltage->level[i].vid = entry[1] >> vidshift; - } - voltage->nr_level = entries; - voltage->supported = true; -} - -void -nouveau_volt_fini(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage; - - kfree(volt->level); -} |