diff options
Diffstat (limited to 'nvkm/subdev/i2c/nv94.c')
| -rw-r--r-- | nvkm/subdev/i2c/nv94.c | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/nvkm/subdev/i2c/nv94.c b/nvkm/subdev/i2c/nv94.c deleted file mode 100644 index e383ee81f..000000000 --- a/nvkm/subdev/i2c/nv94.c +++ /dev/null @@ -1,282 +0,0 @@ -/* - * 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" - -void -nv94_aux_stat(struct nouveau_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx) -{ - u32 intr = nv_rd32(i2c, 0x00e06c); - u32 stat = nv_rd32(i2c, 0x00e068) & intr, i; - for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) { - if ((stat & (1 << (i * 4)))) *hi |= 1 << i; - if ((stat & (2 << (i * 4)))) *lo |= 1 << i; - if ((stat & (4 << (i * 4)))) *rq |= 1 << i; - if ((stat & (8 << (i * 4)))) *tx |= 1 << i; - } - nv_wr32(i2c, 0x00e06c, intr); -} - -void -nv94_aux_mask(struct nouveau_i2c *i2c, u32 type, u32 mask, u32 data) -{ - u32 temp = nv_rd32(i2c, 0x00e068), i; - for (i = 0; i < 8; i++) { - if (mask & (1 << i)) { - if (!(data & (1 << i))) { - temp &= ~(type << (i * 4)); - continue; - } - temp |= type << (i * 4); - } - } - nv_wr32(i2c, 0x00e068, temp); -} - -#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) - -static void -auxch_fini(struct nouveau_i2c *aux, int ch) -{ - nv_mask(aux, 0x00e4e4 + (ch * 0x50), 0x00310000, 0x00000000); -} - -static int -auxch_init(struct nouveau_i2c *aux, int ch) -{ - const u32 unksel = 1; /* nfi which to use, or if it matters.. */ - const u32 ureq = unksel ? 0x00100000 : 0x00200000; - const u32 urep = unksel ? 0x01000000 : 0x02000000; - u32 ctrl, timeout; - - /* wait up to 1ms for any previous transaction to be done... */ - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00e4e4 + (ch * 0x50)); - udelay(1); - if (!timeout--) { - AUX_ERR("begin idle timeout 0x%08x\n", ctrl); - return -EBUSY; - } - } while (ctrl & 0x03010000); - - /* set some magic, and wait up to 1ms for it to appear */ - nv_mask(aux, 0x00e4e4 + (ch * 0x50), 0x00300000, ureq); - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00e4e4 + (ch * 0x50)); - udelay(1); - if (!timeout--) { - AUX_ERR("magic wait 0x%08x\n", ctrl); - auxch_fini(aux, ch); - return -EBUSY; - } - } while ((ctrl & 0x03000000) != urep); - - return 0; -} - -int -nv94_aux(struct nouveau_i2c_port *base, bool retry, - u8 type, u32 addr, u8 *data, u8 size) -{ - 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->addr; - int ret, i; - - AUX_DBG("%d: 0x%08x %d\n", type, addr, size); - - ret = auxch_init(aux, ch); - if (ret) - goto out; - - stat = nv_rd32(aux, 0x00e4e8 + (ch * 0x50)); - if (!(stat & 0x10000000)) { - AUX_DBG("sink not detected\n"); - ret = -ENXIO; - goto out; - } - - if (!(type & 1)) { - memcpy(xbuf, data, size); - for (i = 0; i < 16; i += 4) { - AUX_DBG("wr 0x%08x\n", xbuf[i / 4]); - nv_wr32(aux, 0x00e4c0 + (ch * 0x50) + i, xbuf[i / 4]); - } - } - - ctrl = nv_rd32(aux, 0x00e4e4 + (ch * 0x50)); - ctrl &= ~0x0001f0ff; - ctrl |= type << 12; - ctrl |= size - 1; - nv_wr32(aux, 0x00e4e0 + (ch * 0x50), addr); - - /* (maybe) retry transaction a number of times on failure... */ - for (retries = 0; !ret && retries < 32; retries++) { - /* reset, and delay a while if this is a retry */ - nv_wr32(aux, 0x00e4e4 + (ch * 0x50), 0x80000000 | ctrl); - nv_wr32(aux, 0x00e4e4 + (ch * 0x50), 0x00000000 | ctrl); - if (retries) - udelay(400); - - /* transaction request, wait up to 1ms for it to complete */ - nv_wr32(aux, 0x00e4e4 + (ch * 0x50), 0x00010000 | ctrl); - - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00e4e4 + (ch * 0x50)); - udelay(1); - if (!timeout--) { - AUX_ERR("tx req timeout 0x%08x\n", ctrl); - ret = -EIO; - goto out; - } - } while (ctrl & 0x00010000); - ret = 1; - - /* read status, and check if transaction completed ok */ - stat = nv_mask(aux, 0x00e4e8 + (ch * 0x50), 0, 0); - if ((stat & 0x000f0000) == 0x00080000 || - (stat & 0x000f0000) == 0x00020000) - ret = retry ? 0 : 1; - if ((stat & 0x00000100)) - ret = -ETIMEDOUT; - if ((stat & 0x00000e00)) - ret = -EIO; - - AUX_DBG("%02d 0x%08x 0x%08x\n", retries, ctrl, stat); - } - - if (type & 1) { - for (i = 0; i < 16; i += 4) { - xbuf[i / 4] = nv_rd32(aux, 0x00e4d0 + (ch * 0x50) + i); - AUX_DBG("rd 0x%08x\n", xbuf[i / 4]); - } - memcpy(data, xbuf, size); - } - -out: - auxch_fini(aux, ch); - return ret < 0 ? ret : (stat & 0x000f0000) >> 16; -} - -static const struct nouveau_i2c_func -nv94_i2c_func = { - .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, &nv94_i2c_func, - &port); - *pobject = nv_object(port); - if (ret) - return ret; - - if (info->drive >= nv50_i2c_addr_nr) - return -EINVAL; - - port->state = 7; - port->addr = nv50_i2c_addr[info->drive]; - return 0; -} - -static const struct nouveau_i2c_func -nv94_aux_func = { - .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, &nv94_aux_func, - &port); - *pobject = nv_object(port); - if (ret) - return ret; - - port->base.aux = info->auxch; - port->addr = info->auxch; - 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, - }, - }, - {} -}; - -struct nouveau_oclass * -nv94_i2c_oclass = &(struct nouveau_i2c_impl) { - .base.handle = NV_SUBDEV(I2C, 0x94), - .base.ofuncs = &(struct nouveau_ofuncs) { - .ctor = _nouveau_i2c_ctor, - .dtor = _nouveau_i2c_dtor, - .init = _nouveau_i2c_init, - .fini = _nouveau_i2c_fini, - }, - .sclass = nv94_i2c_sclass, - .pad_x = &nv04_i2c_pad_oclass, - .pad_s = &nv94_i2c_pad_oclass, - .aux = 4, - .aux_stat = nv94_aux_stat, - .aux_mask = nv94_aux_mask, -}.base; |