| 1 | /* $NetBSD: nouveau_engine_disp_dacnv50.c,v 1.2 2014/08/23 08:03:33 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_disp_dacnv50.c,v 1.2 2014/08/23 08:03:33 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/os.h> |
| 31 | #include <core/class.h> |
| 32 | |
| 33 | #include <subdev/bios.h> |
| 34 | #include <subdev/bios/dcb.h> |
| 35 | #include <subdev/timer.h> |
| 36 | |
| 37 | #include "nv50.h" |
| 38 | |
| 39 | int |
| 40 | nv50_dac_power(struct nv50_disp_priv *priv, int or, u32 data) |
| 41 | { |
| 42 | const u32 stat = (data & NV50_DISP_DAC_PWR_HSYNC) | |
| 43 | (data & NV50_DISP_DAC_PWR_VSYNC) | |
| 44 | (data & NV50_DISP_DAC_PWR_DATA) | |
| 45 | (data & NV50_DISP_DAC_PWR_STATE); |
| 46 | const u32 doff = (or * 0x800); |
| 47 | nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); |
| 48 | nv_mask(priv, 0x61a004 + doff, 0xc000007f, 0x80000000 | stat); |
| 49 | nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | int |
| 54 | nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval) |
| 55 | { |
| 56 | const u32 doff = (or * 0x800); |
| 57 | |
| 58 | nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000); |
| 59 | nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); |
| 60 | |
| 61 | nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval); |
| 62 | mdelay(9); |
| 63 | udelay(500); |
| 64 | loadval = nv_mask(priv, 0x61a00c + doff, 0xffffffff, 0x00000000); |
| 65 | |
| 66 | nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000); |
| 67 | nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); |
| 68 | |
| 69 | nv_debug(priv, "DAC%d sense: 0x%08x\n" , or, loadval); |
| 70 | if (!(loadval & 0x80000000)) |
| 71 | return -ETIMEDOUT; |
| 72 | |
| 73 | return (loadval & 0x38000000) >> 27; |
| 74 | } |
| 75 | |
| 76 | int |
| 77 | nv50_dac_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size) |
| 78 | { |
| 79 | struct nv50_disp_priv *priv = (void *)object->engine; |
| 80 | const u8 or = (mthd & NV50_DISP_DAC_MTHD_OR); |
| 81 | u32 *data = args; |
| 82 | int ret; |
| 83 | |
| 84 | if (size < sizeof(u32)) |
| 85 | return -EINVAL; |
| 86 | |
| 87 | switch (mthd & ~0x3f) { |
| 88 | case NV50_DISP_DAC_PWR: |
| 89 | ret = priv->dac.power(priv, or, data[0]); |
| 90 | break; |
| 91 | case NV50_DISP_DAC_LOAD: |
| 92 | ret = priv->dac.sense(priv, or, data[0]); |
| 93 | if (ret >= 0) { |
| 94 | data[0] = ret; |
| 95 | ret = 0; |
| 96 | } |
| 97 | break; |
| 98 | default: |
| 99 | BUG_ON(1); |
| 100 | ret = -EIO; /* XXX GCC */ |
| 101 | } |
| 102 | |
| 103 | return ret; |
| 104 | } |
| 105 | |