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path: root/drivers/gpu/drm/nouveau/nouveau_i2c.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_i2c.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_i2c.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c
deleted file mode 100644
index 316a3c7e6eb..00000000000
--- a/drivers/gpu/drm/nouveau/nouveau_i2c.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Copyright 2009 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 "drmP.h"
-#include "nouveau_drv.h"
-#include "nouveau_i2c.h"
-#include "nouveau_hw.h"
-
-static void
-nv04_i2c_setscl(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- uint8_t val;
-
- val = (NVReadVgaCrtc(dev, 0, i2c->wr) & 0xd0) | (state ? 0x20 : 0);
- NVWriteVgaCrtc(dev, 0, i2c->wr, val | 0x01);
-}
-
-static void
-nv04_i2c_setsda(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- uint8_t val;
-
- val = (NVReadVgaCrtc(dev, 0, i2c->wr) & 0xe0) | (state ? 0x10 : 0);
- NVWriteVgaCrtc(dev, 0, i2c->wr, val | 0x01);
-}
-
-static int
-nv04_i2c_getscl(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!(NVReadVgaCrtc(dev, 0, i2c->rd) & 4);
-}
-
-static int
-nv04_i2c_getsda(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!(NVReadVgaCrtc(dev, 0, i2c->rd) & 8);
-}
-
-static void
-nv4e_i2c_setscl(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- uint8_t val;
-
- val = (nv_rd32(dev, i2c->wr) & 0xd0) | (state ? 0x20 : 0);
- nv_wr32(dev, i2c->wr, val | 0x01);
-}
-
-static void
-nv4e_i2c_setsda(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
- uint8_t val;
-
- val = (nv_rd32(dev, i2c->wr) & 0xe0) | (state ? 0x10 : 0);
- nv_wr32(dev, i2c->wr, val | 0x01);
-}
-
-static int
-nv4e_i2c_getscl(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!((nv_rd32(dev, i2c->rd) >> 16) & 4);
-}
-
-static int
-nv4e_i2c_getsda(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!((nv_rd32(dev, i2c->rd) >> 16) & 8);
-}
-
-static int
-nv50_i2c_getscl(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!(nv_rd32(dev, i2c->rd) & 1);
-}
-
-
-static int
-nv50_i2c_getsda(void *data)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- return !!(nv_rd32(dev, i2c->rd) & 2);
-}
-
-static void
-nv50_i2c_setscl(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- nv_wr32(dev, i2c->wr, 4 | (i2c->data ? 2 : 0) | (state ? 1 : 0));
-}
-
-static void
-nv50_i2c_setsda(void *data, int state)
-{
- struct nouveau_i2c_chan *i2c = data;
- struct drm_device *dev = i2c->dev;
-
- nv_wr32(dev, i2c->wr,
- (nv_rd32(dev, i2c->rd) & 1) | 4 | (state ? 2 : 0));
- i2c->data = state;
-}
-
-static const uint32_t nv50_i2c_port[] = {
- 0x00e138, 0x00e150, 0x00e168, 0x00e180,
- 0x00e254, 0x00e274, 0x00e764, 0x00e780,
- 0x00e79c, 0x00e7b8
-};
-#define NV50_I2C_PORTS ARRAY_SIZE(nv50_i2c_port)
-
-int
-nouveau_i2c_init(struct drm_device *dev, struct dcb_i2c_entry *entry, int index)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_i2c_chan *i2c;
- int ret;
-
- if (entry->chan)
- return -EEXIST;
-
- if (dev_priv->card_type == NV_50 && entry->read >= NV50_I2C_PORTS) {
- NV_ERROR(dev, "unknown i2c port %d\n", entry->read);
- return -EINVAL;
- }
-
- i2c = kzalloc(sizeof(*i2c), GFP_KERNEL);
- if (i2c == NULL)
- return -ENOMEM;
-
- switch (entry->port_type) {
- case 0:
- i2c->algo.bit.setsda = nv04_i2c_setsda;
- i2c->algo.bit.setscl = nv04_i2c_setscl;
- i2c->algo.bit.getsda = nv04_i2c_getsda;
- i2c->algo.bit.getscl = nv04_i2c_getscl;
- i2c->rd = entry->read;
- i2c->wr = entry->write;
- break;
- case 4:
- i2c->algo.bit.setsda = nv4e_i2c_setsda;
- i2c->algo.bit.setscl = nv4e_i2c_setscl;
- i2c->algo.bit.getsda = nv4e_i2c_getsda;
- i2c->algo.bit.getscl = nv4e_i2c_getscl;
- i2c->rd = 0x600800 + entry->read;
- i2c->wr = 0x600800 + entry->write;
- break;
- case 5:
- i2c->algo.bit.setsda = nv50_i2c_setsda;
- i2c->algo.bit.setscl = nv50_i2c_setscl;
- i2c->algo.bit.getsda = nv50_i2c_getsda;
- i2c->algo.bit.getscl = nv50_i2c_getscl;
- i2c->rd = nv50_i2c_port[entry->read];
- i2c->wr = i2c->rd;
- break;
- case 6:
- i2c->rd = entry->read;
- i2c->wr = entry->write;
- break;
- default:
- NV_ERROR(dev, "DCB I2C port type %d unknown\n",
- entry->port_type);
- kfree(i2c);
- return -EINVAL;
- }
-
- snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
- "nouveau-%s-%d", pci_name(dev->pdev), index);
- i2c->adapter.owner = THIS_MODULE;
- i2c->adapter.dev.parent = &dev->pdev->dev;
- i2c->dev = dev;
- i2c_set_adapdata(&i2c->adapter, i2c);
-
- if (entry->port_type < 6) {
- i2c->adapter.algo_data = &i2c->algo.bit;
- i2c->algo.bit.udelay = 40;
- i2c->algo.bit.timeout = usecs_to_jiffies(5000);
- i2c->algo.bit.data = i2c;
- ret = i2c_bit_add_bus(&i2c->adapter);
- } else {
- i2c->adapter.algo_data = &i2c->algo.dp;
- i2c->algo.dp.running = false;
- i2c->algo.dp.address = 0;
- i2c->algo.dp.aux_ch = nouveau_dp_i2c_aux_ch;
- ret = i2c_dp_aux_add_bus(&i2c->adapter);
- }
-
- if (ret) {
- NV_ERROR(dev, "Failed to register i2c %d\n", index);
- kfree(i2c);
- return ret;
- }
-
- entry->chan = i2c;
- return 0;
-}
-
-void
-nouveau_i2c_fini(struct drm_device *dev, struct dcb_i2c_entry *entry)
-{
- if (!entry->chan)
- return;
-
- i2c_del_adapter(&entry->chan->adapter);
- kfree(entry->chan);
- entry->chan = NULL;
-}
-
-struct nouveau_i2c_chan *
-nouveau_i2c_find(struct drm_device *dev, int index)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct dcb_i2c_entry *i2c = &dev_priv->vbios.dcb.i2c[index];
-
- if (index >= DCB_MAX_NUM_I2C_ENTRIES)
- return NULL;
-
- if (dev_priv->chipset >= NV_50 && (i2c->entry & 0x00000100)) {
- uint32_t reg = 0xe500, val;
-
- if (i2c->port_type == 6) {
- reg += i2c->read * 0x50;
- val = 0x2002;
- } else {
- reg += ((i2c->entry & 0x1e00) >> 9) * 0x50;
- val = 0xe001;
- }
-
- nv_wr32(dev, reg, (nv_rd32(dev, reg) & ~0xf003) | val);
- }
-
- if (!i2c->chan && nouveau_i2c_init(dev, i2c, index))
- return NULL;
- return i2c->chan;
-}
-
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