diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c | 150 |
1 files changed, 135 insertions, 15 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c index 4c498532d79..61b771670bf 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c @@ -1,5 +1,5 @@ /* - * Copyright 2009 Red Hat Inc. + * 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"), @@ -22,11 +22,8 @@ * Authors: Ben Skeggs */ -#include <subdev/i2c.h> +#include "nv50.h" -/****************************************************************************** - * aux channel util functions - *****************************************************************************/ #define AUX_DBG(fmt, args...) nv_debug(aux, "AUXCH(%d): " fmt, ch, ##args) #define AUX_ERR(fmt, args...) nv_error(aux, "AUXCH(%d): " fmt, ch, ##args) @@ -72,12 +69,13 @@ auxch_init(struct nouveau_i2c *aux, int ch) } int -nv94_aux(struct nouveau_i2c_port *port, u8 type, u32 addr, u8 *data, u8 size) +nv94_aux(struct nouveau_i2c_port *base, u8 type, u32 addr, u8 *data, u8 size) { - struct nouveau_i2c *aux = port->i2c; + struct nouveau_i2c *aux = nouveau_i2c(base); + struct nv50_i2c_port *port = (void *)base; u32 ctrl, stat, timeout, retries; u32 xbuf[4] = {}; - int ch = port->drive; + int ch = port->addr; int ret, i; AUX_DBG("%d: 0x%08x %d\n", type, addr, size); @@ -153,13 +151,135 @@ out: } void -nv94_aux_mux(struct nouveau_i2c_port *port) +nv94_i2c_acquire(struct nouveau_i2c_port *base) { - if (port->dcb & 0x00000100) { - u32 reg = 0x00e500 + (port->drive * 0x50); - /* nfi, but neither auxch or i2c work if it's 1 */ - nv_mask(port->i2c, reg + 0x0c, 0x00000001, 0x00000000); - /* nfi, but switches auxch vs normal i2c */ - nv_mask(port->i2c, reg + 0x00, 0x0000f003, 0x00002002); + struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine; + struct nv50_i2c_port *port = (void *)base; + if (port->ctrl) { + nv_mask(priv, port->ctrl + 0x0c, 0x00000001, 0x00000000); + nv_mask(priv, port->ctrl + 0x00, 0x0000f003, port->data); } } + +void +nv94_i2c_release(struct nouveau_i2c_port *base) +{ +} + +static const struct nouveau_i2c_func +nv94_i2c_func = { + .acquire = nv94_i2c_acquire, + .release = nv94_i2c_release, + .drive_scl = nv50_i2c_drive_scl, + .drive_sda = nv50_i2c_drive_sda, + .sense_scl = nv50_i2c_sense_scl, + .sense_sda = nv50_i2c_sense_sda, +}; + +static int +nv94_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; + + if (info->drive >= nv50_i2c_addr_nr) + return -EINVAL; + + port->base.func = &nv94_i2c_func; + port->state = 7; + port->addr = nv50_i2c_addr[info->drive]; + if (info->share != DCB_I2C_UNUSED) { + port->ctrl = 0x00e500 + (info->share * 0x50); + port->data = 0x0000e001; + } + return 0; +} + +static const struct nouveau_i2c_func +nv94_aux_func = { + .acquire = nv94_i2c_acquire, + .release = nv94_i2c_release, + .aux = nv94_aux, +}; + +int +nv94_aux_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_aux_algo, &port); + *pobject = nv_object(port); + if (ret) + return ret; + + port->base.func = &nv94_aux_func; + port->addr = info->drive; + if (info->share != DCB_I2C_UNUSED) { + port->ctrl = 0x00e500 + (info->drive * 0x50); + port->data = 0x00002002; + } + + return 0; +} + +static struct nouveau_oclass +nv94_i2c_sclass[] = { + { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv94_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 +nv94_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, nv94_i2c_sclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + return 0; +} + +struct nouveau_oclass +nv94_i2c_oclass = { + .handle = NV_SUBDEV(I2C, 0x94), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv94_i2c_ctor, + .dtor = _nouveau_i2c_dtor, + .init = _nouveau_i2c_init, + .fini = _nouveau_i2c_fini, + }, +}; |