| /* |
| * Copyright 2013 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 <bskeggs@redhat.com> |
| */ |
| |
| #include <core/object.h> |
| #include <core/class.h> |
| |
| #include <subdev/clock.h> |
| |
| #include "priv.h" |
| |
| static int |
| nouveau_control_mthd_pstate_info(struct nouveau_object *object, u32 mthd, |
| void *data, u32 size) |
| { |
| struct nouveau_clock *clk = nouveau_clock(object); |
| struct nv_control_pstate_info *args = data; |
| |
| if (size < sizeof(*args)) |
| return -EINVAL; |
| |
| if (clk) { |
| args->count = clk->state_nr; |
| args->ustate = clk->ustate; |
| args->pstate = clk->pstate; |
| } else { |
| args->count = 0; |
| args->ustate = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE; |
| args->pstate = NV_CONTROL_PSTATE_INFO_PSTATE_UNKNOWN; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd, |
| void *data, u32 size) |
| { |
| struct nouveau_clock *clk = nouveau_clock(object); |
| struct nv_control_pstate_attr *args = data; |
| struct nouveau_clocks *domain; |
| struct nouveau_pstate *pstate; |
| struct nouveau_cstate *cstate; |
| int i = 0, j = -1; |
| u32 lo, hi; |
| |
| if ((size < sizeof(*args)) || !clk || |
| (args->state >= 0 && args->state >= clk->state_nr)) |
| return -EINVAL; |
| domain = clk->domains; |
| |
| while (domain->name != nv_clk_src_max) { |
| if (domain->mname && ++j == args->index) |
| break; |
| domain++; |
| } |
| |
| if (domain->name == nv_clk_src_max) |
| return -EINVAL; |
| |
| if (args->state != NV_CONTROL_PSTATE_ATTR_STATE_CURRENT) { |
| list_for_each_entry(pstate, &clk->states, head) { |
| if (i++ == args->state) |
| break; |
| } |
| |
| lo = pstate->base.domain[domain->name]; |
| hi = lo; |
| list_for_each_entry(cstate, &pstate->list, head) { |
| lo = min(lo, cstate->domain[domain->name]); |
| hi = max(hi, cstate->domain[domain->name]); |
| } |
| |
| args->state = pstate->pstate; |
| } else { |
| lo = max(clk->read(clk, domain->name), 0); |
| hi = lo; |
| } |
| |
| snprintf(args->name, sizeof(args->name), "%s", domain->mname); |
| snprintf(args->unit, sizeof(args->unit), "MHz"); |
| args->min = lo / domain->mdiv; |
| args->max = hi / domain->mdiv; |
| |
| args->index = 0; |
| while ((++domain)->name != nv_clk_src_max) { |
| if (domain->mname) { |
| args->index = ++j; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| nouveau_control_mthd_pstate_user(struct nouveau_object *object, u32 mthd, |
| void *data, u32 size) |
| { |
| struct nouveau_clock *clk = nouveau_clock(object); |
| struct nv_control_pstate_user *args = data; |
| |
| if (size < sizeof(*args) || !clk) |
| return -EINVAL; |
| |
| return nouveau_clock_ustate(clk, args->state); |
| } |
| |
| struct nouveau_oclass |
| nouveau_control_oclass[] = { |
| { .handle = NV_CONTROL_CLASS, |
| .ofuncs = &nouveau_object_ofuncs, |
| .omthds = (struct nouveau_omthds[]) { |
| { NV_CONTROL_PSTATE_INFO, |
| NV_CONTROL_PSTATE_INFO, nouveau_control_mthd_pstate_info }, |
| { NV_CONTROL_PSTATE_ATTR, |
| NV_CONTROL_PSTATE_ATTR, nouveau_control_mthd_pstate_attr }, |
| { NV_CONTROL_PSTATE_USER, |
| NV_CONTROL_PSTATE_USER, nouveau_control_mthd_pstate_user }, |
| {}, |
| }, |
| }, |
| {} |
| }; |