From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../gpu/drm/nouveau/nvkm/subdev/therm/nv50.c | 198 +++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c new file mode 100644 index 000000000..1ef59e892 --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c @@ -0,0 +1,198 @@ +/* + * 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 + * Martin Peres + */ +#include "priv.h" + +#include + +struct nv50_therm_priv { + struct nvkm_therm_priv base; +}; + +static int +pwm_info(struct nvkm_therm *therm, int *line, int *ctrl, int *indx) +{ + if (*line == 0x04) { + *ctrl = 0x00e100; + *line = 4; + *indx = 0; + } else + if (*line == 0x09) { + *ctrl = 0x00e100; + *line = 9; + *indx = 1; + } else + if (*line == 0x10) { + *ctrl = 0x00e28c; + *line = 0; + *indx = 0; + } else { + nv_error(therm, "unknown pwm ctrl for gpio %d\n", *line); + return -ENODEV; + } + + return 0; +} + +int +nv50_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable) +{ + u32 data = enable ? 0x00000001 : 0x00000000; + int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id); + if (ret == 0) + nv_mask(therm, ctrl, 0x00010001 << line, data << line); + return ret; +} + +int +nv50_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty) +{ + int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id); + if (ret) + return ret; + + if (nv_rd32(therm, ctrl) & (1 << line)) { + *divs = nv_rd32(therm, 0x00e114 + (id * 8)); + *duty = nv_rd32(therm, 0x00e118 + (id * 8)); + return 0; + } + + return -EINVAL; +} + +int +nv50_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty) +{ + int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id); + if (ret) + return ret; + + nv_wr32(therm, 0x00e114 + (id * 8), divs); + nv_wr32(therm, 0x00e118 + (id * 8), duty | 0x80000000); + return 0; +} + +int +nv50_fan_pwm_clock(struct nvkm_therm *therm, int line) +{ + int chipset = nv_device(therm)->chipset; + int crystal = nv_device(therm)->crystal; + int pwm_clock; + + /* determine the PWM source clock */ + if (chipset > 0x50 && chipset < 0x94) { + u8 pwm_div = nv_rd32(therm, 0x410c); + if (nv_rd32(therm, 0xc040) & 0x800000) { + /* Use the HOST clock (100 MHz) + * Where does this constant(2.4) comes from? */ + pwm_clock = (100000000 >> pwm_div) * 10 / 24; + } else { + /* Where does this constant(20) comes from? */ + pwm_clock = (crystal * 1000) >> pwm_div; + pwm_clock /= 20; + } + } else { + pwm_clock = (crystal * 1000) / 20; + } + + return pwm_clock; +} + +static void +nv50_sensor_setup(struct nvkm_therm *therm) +{ + nv_mask(therm, 0x20010, 0x40000000, 0x0); + mdelay(20); /* wait for the temperature to stabilize */ +} + +static int +nv50_temp_get(struct nvkm_therm *therm) +{ + struct nvkm_therm_priv *priv = (void *)therm; + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + int core_temp; + + core_temp = nv_rd32(therm, 0x20014) & 0x3fff; + + /* if the slope or the offset is unset, do no use the sensor */ + if (!sensor->slope_div || !sensor->slope_mult || + !sensor->offset_num || !sensor->offset_den) + return -ENODEV; + + core_temp = core_temp * sensor->slope_mult / sensor->slope_div; + core_temp = core_temp + sensor->offset_num / sensor->offset_den; + core_temp = core_temp + sensor->offset_constant - 8; + + /* reserve negative temperatures for errors */ + if (core_temp < 0) + core_temp = 0; + + return core_temp; +} + +static int +nv50_therm_ctor(struct nvkm_object *parent, + struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nv50_therm_priv *priv; + int ret; + + ret = nvkm_therm_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.base.pwm_ctrl = nv50_fan_pwm_ctrl; + priv->base.base.pwm_get = nv50_fan_pwm_get; + priv->base.base.pwm_set = nv50_fan_pwm_set; + priv->base.base.pwm_clock = nv50_fan_pwm_clock; + priv->base.base.temp_get = nv50_temp_get; + priv->base.sensor.program_alarms = nvkm_therm_program_alarms_polling; + nv_subdev(priv)->intr = nv40_therm_intr; + + return nvkm_therm_preinit(&priv->base.base); +} + +static int +nv50_therm_init(struct nvkm_object *object) +{ + struct nvkm_therm *therm = (void *)object; + + nv50_sensor_setup(therm); + + return _nvkm_therm_init(object); +} + +struct nvkm_oclass +nv50_therm_oclass = { + .handle = NV_SUBDEV(THERM, 0x50), + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = nv50_therm_ctor, + .dtor = _nvkm_therm_dtor, + .init = nv50_therm_init, + .fini = _nvkm_therm_fini, + }, +}; -- cgit 1.2.3-korg