diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c new file mode 100644 index 000000000000..d0817d94454c --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c @@ -0,0 +1,88 @@ +/* + * Copyright 2012 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 <core/os.h> +#include <core/class.h> + +#include <subdev/bios.h> +#include <subdev/bios/dcb.h> +#include <subdev/timer.h> + +#include "nv50.h" + +int +nv50_dac_power(struct nv50_disp_priv *priv, int or, u32 data) +{ + const u32 stat = (data & NV50_DISP_DAC_PWR_HSYNC) | + (data & NV50_DISP_DAC_PWR_VSYNC) | + (data & NV50_DISP_DAC_PWR_DATA) | + (data & NV50_DISP_DAC_PWR_STATE); + const u32 doff = (or * 0x800); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); + nv_mask(priv, 0x61a004 + doff, 0xc000007f, 0x80000000 | stat); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); + return 0; +} + +int +nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval) +{ + const u32 doff = (or * 0x800); + int load = -EINVAL; + nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval); + udelay(9500); + nv_wr32(priv, 0x61a00c + doff, 0x80000000); + load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27; + nv_wr32(priv, 0x61a00c + doff, 0x00000000); + return load; +} + +int +nv50_dac_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size) +{ + struct nv50_disp_priv *priv = (void *)object->engine; + const u8 or = (mthd & NV50_DISP_DAC_MTHD_OR); + u32 *data = args; + int ret; + + if (size < sizeof(u32)) + return -EINVAL; + + switch (mthd & ~0x3f) { + case NV50_DISP_DAC_PWR: + ret = priv->dac.power(priv, or, data[0]); + break; + case NV50_DISP_DAC_LOAD: + ret = priv->dac.sense(priv, or, data[0]); + if (ret >= 0) { + data[0] = ret; + ret = 0; + } + break; + default: + BUG_ON(1); + } + + return ret; +} |