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drm/nv50-/disp: initial work towards supporting external encoders
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Ben Skeggs
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Feb 20, 2013
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| /* | ||
| * 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; | ||
| } |
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