diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c new file mode 100644 index 00000000000..f761b8a610f --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c @@ -0,0 +1,124 @@ +/* + * 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 "nv50.h" + +static int +nvd0_i2c_sense_scl(struct nouveau_i2c_port *base) +{ + struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine; + struct nv50_i2c_port *port = (void *)base; + return !!(nv_rd32(priv, port->addr) & 0x00000010); +} + +static int +nvd0_i2c_sense_sda(struct nouveau_i2c_port *base) +{ + struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine; + struct nv50_i2c_port *port = (void *)base; + return !!(nv_rd32(priv, port->addr) & 0x00000020); +} + +static const struct nouveau_i2c_func +nvd0_i2c_func = { + .acquire = nv94_i2c_acquire, + .release = nv94_i2c_release, + .drive_scl = nv50_i2c_drive_scl, + .drive_sda = nv50_i2c_drive_sda, + .sense_scl = nvd0_i2c_sense_scl, + .sense_sda = nvd0_i2c_sense_sda, +}; + +static int +nvd0_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 index, + struct nouveau_object **pobject) +{ + struct dcb_i2c_entry *info = data; + struct nv50_i2c_port *port; + int ret; + + ret = nouveau_i2c_port_create(parent, engine, oclass, index, + &nouveau_i2c_bit_algo, &port); + *pobject = nv_object(port); + if (ret) + return ret; + + port->base.func = &nvd0_i2c_func; + port->state = 0x00000007; + port->addr = 0x00d014 + (info->drive * 0x20); + if (info->share != DCB_I2C_UNUSED) { + port->ctrl = 0x00e500 + (info->share * 0x50); + port->data = 0x0000e001; + } + return 0; +} + +static struct nouveau_oclass +nvd0_i2c_sclass[] = { + { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvd0_i2c_port_ctor, + .dtor = _nouveau_i2c_port_dtor, + .init = nv50_i2c_port_init, + .fini = _nouveau_i2c_port_fini, + }, + }, + { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv94_aux_port_ctor, + .dtor = _nouveau_i2c_port_dtor, + .init = _nouveau_i2c_port_init, + .fini = _nouveau_i2c_port_fini, + }, + }, + {} +}; + +static int +nvd0_i2c_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nv50_i2c_priv *priv; + int ret; + + ret = nouveau_i2c_create(parent, engine, oclass, nvd0_i2c_sclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + return 0; +} + +struct nouveau_oclass +nvd0_i2c_oclass = { + .handle = NV_SUBDEV(I2C, 0xd0), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvd0_i2c_ctor, + .dtor = _nouveau_i2c_dtor, + .init = _nouveau_i2c_init, + .fini = _nouveau_i2c_fini, + }, +}; |