| /* |
| * 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 <subdev/i2c.h> |
| |
| #include "nv50.h" |
| |
| /****************************************************************************** |
| * DisplayPort |
| *****************************************************************************/ |
| static struct nouveau_i2c_port * |
| nv50_pior_dp_find(struct nouveau_disp *disp, struct dcb_output *outp) |
| { |
| struct nouveau_i2c *i2c = nouveau_i2c(disp); |
| return i2c->find_type(i2c, NV_I2C_TYPE_EXTAUX(outp->extdev)); |
| } |
| |
| static int |
| nv50_pior_dp_pattern(struct nouveau_disp *disp, struct dcb_output *outp, |
| int head, int pattern) |
| { |
| struct nouveau_i2c_port *port; |
| int ret = -EINVAL; |
| |
| port = nv50_pior_dp_find(disp, outp); |
| if (port) { |
| if (port->func->pattern) |
| ret = port->func->pattern(port, pattern); |
| else |
| ret = 0; |
| } |
| |
| return ret; |
| } |
| |
| static int |
| nv50_pior_dp_lnk_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
| int head, int lane_nr, int link_bw, bool enh) |
| { |
| struct nouveau_i2c_port *port; |
| int ret = -EINVAL; |
| |
| port = nv50_pior_dp_find(disp, outp); |
| if (port && port->func->lnk_ctl) |
| ret = port->func->lnk_ctl(port, lane_nr, link_bw, enh); |
| |
| return ret; |
| } |
| |
| static int |
| nv50_pior_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
| int head, int lane, int vsw, int pre) |
| { |
| struct nouveau_i2c_port *port; |
| int ret = -EINVAL; |
| |
| port = nv50_pior_dp_find(disp, outp); |
| if (port) { |
| if (port->func->drv_ctl) |
| ret = port->func->drv_ctl(port, lane, vsw, pre); |
| else |
| ret = 0; |
| } |
| |
| return ret; |
| } |
| |
| const struct nouveau_dp_func |
| nv50_pior_dp_func = { |
| .pattern = nv50_pior_dp_pattern, |
| .lnk_ctl = nv50_pior_dp_lnk_ctl, |
| .drv_ctl = nv50_pior_dp_drv_ctl, |
| }; |
| |
| /****************************************************************************** |
| * General PIOR handling |
| *****************************************************************************/ |
| int |
| nv50_pior_power(struct nv50_disp_priv *priv, int or, u32 data) |
| { |
| const u32 stat = data & NV50_DISP_PIOR_PWR_STATE; |
| const u32 soff = (or * 0x800); |
| nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
| nv_mask(priv, 0x61e004 + soff, 0x80000101, 0x80000000 | stat); |
| nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
| return 0; |
| } |
| |
| int |
| nv50_pior_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size) |
| { |
| struct nv50_disp_priv *priv = (void *)object->engine; |
| const u8 type = (mthd & NV50_DISP_PIOR_MTHD_TYPE) >> 12; |
| const u8 or = (mthd & NV50_DISP_PIOR_MTHD_OR); |
| u32 *data = args; |
| int ret; |
| |
| if (size < sizeof(u32)) |
| return -EINVAL; |
| |
| mthd &= ~NV50_DISP_PIOR_MTHD_TYPE; |
| mthd &= ~NV50_DISP_PIOR_MTHD_OR; |
| switch (mthd) { |
| case NV50_DISP_PIOR_PWR: |
| ret = priv->pior.power(priv, or, data[0]); |
| priv->pior.type[or] = type; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return ret; |
| } |