diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c new file mode 100644 index 000000000000..168d16a9a8e9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c @@ -0,0 +1,169 @@ +/* + * Copyright (C) 2009 Francisco Jerez. + * All Rights Reserved. + * + * 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 (including the + * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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. + * + */ + +#include <subdev/gpio.h> + +struct nv10_gpio_priv { + struct nouveau_gpio base; +}; + +static int +nv10_gpio_sense(struct nouveau_gpio *gpio, int line) +{ + if (line < 2) { + line = line * 16; + line = nv_rd32(gpio, 0x600818) >> line; + return !!(line & 0x0100); + } else + if (line < 10) { + line = (line - 2) * 4; + line = nv_rd32(gpio, 0x60081c) >> line; + return !!(line & 0x04); + } else + if (line < 14) { + line = (line - 10) * 4; + line = nv_rd32(gpio, 0x600850) >> line; + return !!(line & 0x04); + } + + return -EINVAL; +} + +static int +nv10_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out) +{ + u32 reg, mask, data; + + if (line < 2) { + line = line * 16; + reg = 0x600818; + mask = 0x00000011; + data = (dir << 4) | out; + } else + if (line < 10) { + line = (line - 2) * 4; + reg = 0x60081c; + mask = 0x00000003; + data = (dir << 1) | out; + } else + if (line < 14) { + line = (line - 10) * 4; + reg = 0x600850; + mask = 0x00000003; + data = (dir << 1) | out; + } else { + return -EINVAL; + } + + nv_mask(gpio, reg, mask << line, data << line); + return 0; +} + +static void +nv10_gpio_irq_enable(struct nouveau_gpio *gpio, int line, bool on) +{ + u32 mask = 0x00010001 << line; + + nv_wr32(gpio, 0x001104, mask); + nv_mask(gpio, 0x001144, mask, on ? mask : 0); +} + +static void +nv10_gpio_intr(struct nouveau_subdev *subdev) +{ + struct nv10_gpio_priv *priv = (void *)subdev; + u32 intr = nv_rd32(priv, 0x001104); + u32 hi = (intr & 0x0000ffff) >> 0; + u32 lo = (intr & 0xffff0000) >> 16; + + priv->base.isr_run(&priv->base, 0, hi | lo); + + nv_wr32(priv, 0x001104, intr); +} + +static int +nv10_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nv10_gpio_priv *priv; + int ret; + + ret = nouveau_gpio_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.drive = nv10_gpio_drive; + priv->base.sense = nv10_gpio_sense; + priv->base.irq_enable = nv10_gpio_irq_enable; + nv_subdev(priv)->intr = nv10_gpio_intr; + return 0; +} + +static void +nv10_gpio_dtor(struct nouveau_object *object) +{ + struct nv10_gpio_priv *priv = (void *)object; + nouveau_gpio_destroy(&priv->base); +} + +static int +nv10_gpio_init(struct nouveau_object *object) +{ + struct nv10_gpio_priv *priv = (void *)object; + int ret; + + ret = nouveau_gpio_init(&priv->base); + if (ret) + return ret; + + nv_wr32(priv, 0x001140, 0x00000000); + nv_wr32(priv, 0x001100, 0xffffffff); + nv_wr32(priv, 0x001144, 0x00000000); + nv_wr32(priv, 0x001104, 0xffffffff); + return 0; +} + +static int +nv10_gpio_fini(struct nouveau_object *object, bool suspend) +{ + struct nv10_gpio_priv *priv = (void *)object; + nv_wr32(priv, 0x001140, 0x00000000); + nv_wr32(priv, 0x001144, 0x00000000); + return nouveau_gpio_fini(&priv->base, suspend); +} + +struct nouveau_oclass +nv10_gpio_oclass = { + .handle = NV_SUBDEV(GPIO, 0x10), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv10_gpio_ctor, + .dtor = nv10_gpio_dtor, + .init = nv10_gpio_init, + .fini = nv10_gpio_fini, + }, +}; |