| 1 | /* $NetBSD: nouveau_engine_disp_piornv50.c,v 1.1.1.1 2014/08/06 12:36:24 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_piornv50.c,v 1.1.1.1 2014/08/06 12:36:24 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 | #include <subdev/i2c.h> |
| 37 | |
| 38 | #include "nv50.h" |
| 39 | |
| 40 | /****************************************************************************** |
| 41 | * DisplayPort |
| 42 | *****************************************************************************/ |
| 43 | static struct nouveau_i2c_port * |
| 44 | nv50_pior_dp_find(struct nouveau_disp *disp, struct dcb_output *outp) |
| 45 | { |
| 46 | struct nouveau_i2c *i2c = nouveau_i2c(disp); |
| 47 | return i2c->find_type(i2c, NV_I2C_TYPE_EXTAUX(outp->extdev)); |
| 48 | } |
| 49 | |
| 50 | static int |
| 51 | nv50_pior_dp_pattern(struct nouveau_disp *disp, struct dcb_output *outp, |
| 52 | int head, int pattern) |
| 53 | { |
| 54 | struct nouveau_i2c_port *port; |
| 55 | int ret = -EINVAL; |
| 56 | |
| 57 | port = nv50_pior_dp_find(disp, outp); |
| 58 | if (port) { |
| 59 | if (port->func->pattern) |
| 60 | ret = port->func->pattern(port, pattern); |
| 61 | else |
| 62 | ret = 0; |
| 63 | } |
| 64 | |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | static int |
| 69 | nv50_pior_dp_lnk_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
| 70 | int head, int lane_nr, int link_bw, bool enh) |
| 71 | { |
| 72 | struct nouveau_i2c_port *port; |
| 73 | int ret = -EINVAL; |
| 74 | |
| 75 | port = nv50_pior_dp_find(disp, outp); |
| 76 | if (port && port->func->lnk_ctl) |
| 77 | ret = port->func->lnk_ctl(port, lane_nr, link_bw, enh); |
| 78 | |
| 79 | return ret; |
| 80 | } |
| 81 | |
| 82 | static int |
| 83 | nv50_pior_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
| 84 | int head, int lane, int vsw, int pre) |
| 85 | { |
| 86 | struct nouveau_i2c_port *port; |
| 87 | int ret = -EINVAL; |
| 88 | |
| 89 | port = nv50_pior_dp_find(disp, outp); |
| 90 | if (port) { |
| 91 | if (port->func->drv_ctl) |
| 92 | ret = port->func->drv_ctl(port, lane, vsw, pre); |
| 93 | else |
| 94 | ret = 0; |
| 95 | } |
| 96 | |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | const struct nouveau_dp_func |
| 101 | nv50_pior_dp_func = { |
| 102 | .pattern = nv50_pior_dp_pattern, |
| 103 | .lnk_ctl = nv50_pior_dp_lnk_ctl, |
| 104 | .drv_ctl = nv50_pior_dp_drv_ctl, |
| 105 | }; |
| 106 | |
| 107 | /****************************************************************************** |
| 108 | * General PIOR handling |
| 109 | *****************************************************************************/ |
| 110 | int |
| 111 | nv50_pior_power(struct nv50_disp_priv *priv, int or, u32 data) |
| 112 | { |
| 113 | const u32 stat = data & NV50_DISP_PIOR_PWR_STATE; |
| 114 | const u32 soff = (or * 0x800); |
| 115 | nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
| 116 | nv_mask(priv, 0x61e004 + soff, 0x80000101, 0x80000000 | stat); |
| 117 | nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | int |
| 122 | nv50_pior_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size) |
| 123 | { |
| 124 | struct nv50_disp_priv *priv = (void *)object->engine; |
| 125 | const u8 type = (mthd & NV50_DISP_PIOR_MTHD_TYPE) >> 12; |
| 126 | const u8 or = (mthd & NV50_DISP_PIOR_MTHD_OR); |
| 127 | u32 *data = args; |
| 128 | int ret; |
| 129 | |
| 130 | if (size < sizeof(u32)) |
| 131 | return -EINVAL; |
| 132 | |
| 133 | mthd &= ~NV50_DISP_PIOR_MTHD_TYPE; |
| 134 | mthd &= ~NV50_DISP_PIOR_MTHD_OR; |
| 135 | switch (mthd) { |
| 136 | case NV50_DISP_PIOR_PWR: |
| 137 | ret = priv->pior.power(priv, or, data[0]); |
| 138 | priv->pior.type[or] = type; |
| 139 | break; |
| 140 | default: |
| 141 | return -EINVAL; |
| 142 | } |
| 143 | |
| 144 | return ret; |
| 145 | } |
| 146 | |