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path: root/drivers/gpu/drm/nouveau/core/subdev/i2c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c279
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/aux.c100
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/base.c365
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/bit.c232
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c143
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c135
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c149
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.h32
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c285
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c124
10 files changed, 1844 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c
new file mode 100644
index 00000000..dec94e9d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/anx9805.c
@@ -0,0 +1,279 @@
+/*
+ * Copyright 2013 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 <bskeggs@redhat.com>
+ */
+
+#include <subdev/i2c.h>
+
+struct anx9805_i2c_port {
+ struct nouveau_i2c_port base;
+ u32 addr;
+ u32 ctrl;
+};
+
+static int
+anx9805_train(struct nouveau_i2c_port *port, int link_nr, int link_bw, bool enh)
+{
+ struct anx9805_i2c_port *chan = (void *)port;
+ struct nouveau_i2c_port *mast = (void *)nv_object(chan)->parent;
+ u8 tmp, i;
+
+ nv_wri2cr(mast, chan->addr, 0xa0, link_bw);
+ nv_wri2cr(mast, chan->addr, 0xa1, link_nr | (enh ? 0x80 : 0x00));
+ nv_wri2cr(mast, chan->addr, 0xa2, 0x01);
+ nv_wri2cr(mast, chan->addr, 0xa8, 0x01);
+
+ i = 0;
+ while ((tmp = nv_rdi2cr(mast, chan->addr, 0xa8)) & 0x01) {
+ mdelay(5);
+ if (i++ == 100) {
+ nv_error(port, "link training timed out\n");
+ return -ETIMEDOUT;
+ }
+ }
+
+ if (tmp & 0x70) {
+ nv_error(port, "link training failed: 0x%02x\n", tmp);
+ return -EIO;
+ }
+
+ return 1;
+}
+
+static int
+anx9805_aux(struct nouveau_i2c_port *port, u8 type, u32 addr, u8 *data, u8 size)
+{
+ struct anx9805_i2c_port *chan = (void *)port;
+ struct nouveau_i2c_port *mast = (void *)nv_object(chan)->parent;
+ int i, ret = -ETIMEDOUT;
+ u8 tmp;
+
+ tmp = nv_rdi2cr(mast, chan->ctrl, 0x07) & ~0x04;
+ nv_wri2cr(mast, chan->ctrl, 0x07, tmp | 0x04);
+ nv_wri2cr(mast, chan->ctrl, 0x07, tmp);
+ nv_wri2cr(mast, chan->ctrl, 0xf7, 0x01);
+
+ nv_wri2cr(mast, chan->addr, 0xe4, 0x80);
+ for (i = 0; !(type & 1) && i < size; i++)
+ nv_wri2cr(mast, chan->addr, 0xf0 + i, data[i]);
+ nv_wri2cr(mast, chan->addr, 0xe5, ((size - 1) << 4) | type);
+ nv_wri2cr(mast, chan->addr, 0xe6, (addr & 0x000ff) >> 0);
+ nv_wri2cr(mast, chan->addr, 0xe7, (addr & 0x0ff00) >> 8);
+ nv_wri2cr(mast, chan->addr, 0xe8, (addr & 0xf0000) >> 16);
+ nv_wri2cr(mast, chan->addr, 0xe9, 0x01);
+
+ i = 0;
+ while ((tmp = nv_rdi2cr(mast, chan->addr, 0xe9)) & 0x01) {
+ mdelay(5);
+ if (i++ == 32)
+ goto done;
+ }
+
+ if ((tmp = nv_rdi2cr(mast, chan->ctrl, 0xf7)) & 0x01) {
+ ret = -EIO;
+ goto done;
+ }
+
+ for (i = 0; (type & 1) && i < size; i++)
+ data[i] = nv_rdi2cr(mast, chan->addr, 0xf0 + i);
+ ret = 0;
+done:
+ nv_wri2cr(mast, chan->ctrl, 0xf7, 0x01);
+ return ret;
+}
+
+static const struct nouveau_i2c_func
+anx9805_aux_func = {
+ .aux = anx9805_aux,
+ .lnk_ctl = anx9805_train,
+};
+
+static int
+anx9805_aux_chan_ctor(struct nouveau_object *parent,
+ struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 index,
+ struct nouveau_object **pobject)
+{
+ struct nouveau_i2c_port *mast = (void *)parent;
+ struct anx9805_i2c_port *chan;
+ int ret;
+
+ ret = nouveau_i2c_port_create(parent, engine, oclass, index,
+ &nouveau_i2c_aux_algo, &chan);
+ *pobject = nv_object(chan);
+ if (ret)
+ return ret;
+
+ switch ((oclass->handle & 0xff00) >> 8) {
+ case 0x0d:
+ chan->addr = 0x38;
+ chan->ctrl = 0x39;
+ break;
+ case 0x0e:
+ chan->addr = 0x3c;
+ chan->ctrl = 0x3b;
+ break;
+ default:
+ BUG_ON(1);
+ }
+
+ if (mast->adapter.algo == &i2c_bit_algo) {
+ struct i2c_algo_bit_data *algo = mast->adapter.algo_data;
+ algo->udelay = max(algo->udelay, 40);
+ }
+
+ chan->base.func = &anx9805_aux_func;
+ return 0;
+}
+
+static struct nouveau_ofuncs
+anx9805_aux_ofuncs = {
+ .ctor = anx9805_aux_chan_ctor,
+ .dtor = _nouveau_i2c_port_dtor,
+ .init = _nouveau_i2c_port_init,
+ .fini = _nouveau_i2c_port_fini,
+};
+
+static int
+anx9805_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+ struct anx9805_i2c_port *port = adap->algo_data;
+ struct nouveau_i2c_port *mast = (void *)nv_object(port)->parent;
+ struct i2c_msg *msg = msgs;
+ int ret = -ETIMEDOUT;
+ int i, j, cnt = num;
+ u8 seg = 0x00, off = 0x00, tmp;
+
+ tmp = nv_rdi2cr(mast, port->ctrl, 0x07) & ~0x10;
+ nv_wri2cr(mast, port->ctrl, 0x07, tmp | 0x10);
+ nv_wri2cr(mast, port->ctrl, 0x07, tmp);
+ nv_wri2cr(mast, port->addr, 0x43, 0x05);
+ mdelay(5);
+
+ while (cnt--) {
+ if ( (msg->flags & I2C_M_RD) && msg->addr == 0x50) {
+ nv_wri2cr(mast, port->addr, 0x40, msg->addr << 1);
+ nv_wri2cr(mast, port->addr, 0x41, seg);
+ nv_wri2cr(mast, port->addr, 0x42, off);
+ nv_wri2cr(mast, port->addr, 0x44, msg->len);
+ nv_wri2cr(mast, port->addr, 0x45, 0x00);
+ nv_wri2cr(mast, port->addr, 0x43, 0x01);
+ for (i = 0; i < msg->len; i++) {
+ j = 0;
+ while (nv_rdi2cr(mast, port->addr, 0x46) & 0x10) {
+ mdelay(5);
+ if (j++ == 32)
+ goto done;
+ }
+ msg->buf[i] = nv_rdi2cr(mast, port->addr, 0x47);
+ }
+ } else
+ if (!(msg->flags & I2C_M_RD)) {
+ if (msg->addr == 0x50 && msg->len == 0x01) {
+ off = msg->buf[0];
+ } else
+ if (msg->addr == 0x30 && msg->len == 0x01) {
+ seg = msg->buf[0];
+ } else
+ goto done;
+ } else {
+ goto done;
+ }
+ msg++;
+ }
+
+ ret = num;
+done:
+ nv_wri2cr(mast, port->addr, 0x43, 0x00);
+ return ret;
+}
+
+static u32
+anx9805_func(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm
+anx9805_i2c_algo = {
+ .master_xfer = anx9805_xfer,
+ .functionality = anx9805_func
+};
+
+static const struct nouveau_i2c_func
+anx9805_i2c_func = {
+};
+
+static int
+anx9805_ddc_port_ctor(struct nouveau_object *parent,
+ struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 index,
+ struct nouveau_object **pobject)
+{
+ struct nouveau_i2c_port *mast = (void *)parent;
+ struct anx9805_i2c_port *port;
+ int ret;
+
+ ret = nouveau_i2c_port_create(parent, engine, oclass, index,
+ &anx9805_i2c_algo, &port);
+ *pobject = nv_object(port);
+ if (ret)
+ return ret;
+
+ switch ((oclass->handle & 0xff00) >> 8) {
+ case 0x0d:
+ port->addr = 0x3d;
+ port->ctrl = 0x39;
+ break;
+ case 0x0e:
+ port->addr = 0x3f;
+ port->ctrl = 0x3b;
+ break;
+ default:
+ BUG_ON(1);
+ }
+
+ if (mast->adapter.algo == &i2c_bit_algo) {
+ struct i2c_algo_bit_data *algo = mast->adapter.algo_data;
+ algo->udelay = max(algo->udelay, 40);
+ }
+
+ port->base.func = &anx9805_i2c_func;
+ return 0;
+}
+
+static struct nouveau_ofuncs
+anx9805_ddc_ofuncs = {
+ .ctor = anx9805_ddc_port_ctor,
+ .dtor = _nouveau_i2c_port_dtor,
+ .init = _nouveau_i2c_port_init,
+ .fini = _nouveau_i2c_port_fini,
+};
+
+struct nouveau_oclass
+nouveau_anx9805_sclass[] = {
+ { .handle = NV_I2C_TYPE_EXTDDC(0x0d), .ofuncs = &anx9805_ddc_ofuncs },
+ { .handle = NV_I2C_TYPE_EXTAUX(0x0d), .ofuncs = &anx9805_aux_ofuncs },
+ { .handle = NV_I2C_TYPE_EXTDDC(0x0e), .ofuncs = &anx9805_ddc_ofuncs },
+ { .handle = NV_I2C_TYPE_EXTAUX(0x0e), .ofuncs = &anx9805_aux_ofuncs },
+ {}
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/aux.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/aux.c
new file mode 100644
index 00000000..5de074ad
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/aux.c
@@ -0,0 +1,100 @@
+/*
+ * 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 <subdev/i2c.h>
+
+int
+nv_rdaux(struct nouveau_i2c_port *port, u32 addr, u8 *data, u8 size)
+{
+ if (port->func->aux) {
+ if (port->func->acquire)
+ port->func->acquire(port);
+ return port->func->aux(port, 9, addr, data, size);
+ }
+ return -ENODEV;
+}
+
+int
+nv_wraux(struct nouveau_i2c_port *port, u32 addr, u8 *data, u8 size)
+{
+ if (port->func->aux) {
+ if (port->func->acquire)
+ port->func->acquire(port);
+ return port->func->aux(port, 8, addr, data, size);
+ }
+ return -ENODEV;
+}
+
+static int
+aux_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+ struct nouveau_i2c_port *port = adap->algo_data;
+ struct i2c_msg *msg = msgs;
+ int ret, mcnt = num;
+
+ if (!port->func->aux)
+ return -ENODEV;
+ if ( port->func->acquire)
+ port->func->acquire(port);
+
+ while (mcnt--) {
+ u8 remaining = msg->len;
+ u8 *ptr = msg->buf;
+
+ while (remaining) {
+ u8 cnt = (remaining > 16) ? 16 : remaining;
+ u8 cmd;
+
+ if (msg->flags & I2C_M_RD)
+ cmd = 1;
+ else
+ cmd = 0;
+
+ if (mcnt || remaining > 16)
+ cmd |= 4; /* MOT */
+
+ ret = port->func->aux(port, cmd, msg->addr, ptr, cnt);
+ if (ret < 0)
+ return ret;
+
+ ptr += cnt;
+ remaining -= cnt;
+ }
+
+ msg++;
+ }
+
+ return num;
+}
+
+static u32
+aux_func(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+const struct i2c_algorithm nouveau_i2c_aux_algo = {
+ .master_xfer = aux_xfer,
+ .functionality = aux_func
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c
new file mode 100644
index 00000000..8ae26254
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c
@@ -0,0 +1,365 @@
+/*
+ * Copyright 2013 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 <core/option.h>
+
+#include <subdev/bios.h>
+#include <subdev/bios/dcb.h>
+#include <subdev/bios/i2c.h>
+#include <subdev/i2c.h>
+#include <subdev/vga.h>
+
+/******************************************************************************
+ * interface to linux i2c bit-banging algorithm
+ *****************************************************************************/
+
+#ifdef CONFIG_NOUVEAU_I2C_INTERNAL_DEFAULT
+#define CSTMSEL true
+#else
+#define CSTMSEL false
+#endif
+
+static int
+nouveau_i2c_pre_xfer(struct i2c_adapter *adap)
+{
+ struct i2c_algo_bit_data *bit = adap->algo_data;
+ struct nouveau_i2c_port *port = bit->data;
+ if (port->func->acquire)
+ port->func->acquire(port);
+ return 0;
+}
+
+static void
+nouveau_i2c_setscl(void *data, int state)
+{
+ struct nouveau_i2c_port *port = data;
+ port->func->drive_scl(port, state);
+}
+
+static void
+nouveau_i2c_setsda(void *data, int state)
+{
+ struct nouveau_i2c_port *port = data;
+ port->func->drive_sda(port, state);
+}
+
+static int
+nouveau_i2c_getscl(void *data)
+{
+ struct nouveau_i2c_port *port = data;
+ return port->func->sense_scl(port);
+}
+
+static int
+nouveau_i2c_getsda(void *data)
+{
+ struct nouveau_i2c_port *port = data;
+ return port->func->sense_sda(port);
+}
+
+/******************************************************************************
+ * base i2c "port" class implementation
+ *****************************************************************************/
+
+void
+_nouveau_i2c_port_dtor(struct nouveau_object *object)
+{
+ struct nouveau_i2c_port *port = (void *)object;
+ i2c_del_adapter(&port->adapter);
+ nouveau_object_destroy(&port->base);
+}
+
+int
+nouveau_i2c_port_create_(struct nouveau_object *parent,
+ struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, u8 index,
+ const struct i2c_algorithm *algo,
+ int size, void **pobject)
+{
+ struct nouveau_device *device = nv_device(parent);
+ struct nouveau_i2c *i2c = (void *)engine;
+ struct nouveau_i2c_port *port;
+ int ret;
+
+ ret = nouveau_object_create_(parent, engine, oclass, 0, size, pobject);
+ port = *pobject;
+ if (ret)
+ return ret;
+
+ snprintf(port->adapter.name, sizeof(port->adapter.name),
+ "nouveau-%s-%d", device->name, index);
+ port->adapter.owner = THIS_MODULE;
+ port->adapter.dev.parent = &device->pdev->dev;
+ port->index = index;
+ i2c_set_adapdata(&port->adapter, i2c);
+
+ if ( algo == &nouveau_i2c_bit_algo &&
+ !nouveau_boolopt(device->cfgopt, "NvI2C", CSTMSEL)) {
+ struct i2c_algo_bit_data *bit;
+
+ bit = kzalloc(sizeof(*bit), GFP_KERNEL);
+ if (!bit)
+ return -ENOMEM;
+
+ bit->udelay = 10;
+ bit->timeout = usecs_to_jiffies(2200);
+ bit->data = port;
+ bit->pre_xfer = nouveau_i2c_pre_xfer;
+ bit->setsda = nouveau_i2c_setsda;
+ bit->setscl = nouveau_i2c_setscl;
+ bit->getsda = nouveau_i2c_getsda;
+ bit->getscl = nouveau_i2c_getscl;
+
+ port->adapter.algo_data = bit;
+ ret = i2c_bit_add_bus(&port->adapter);
+ } else {
+ port->adapter.algo_data = port;
+ port->adapter.algo = algo;
+ ret = i2c_add_adapter(&port->adapter);
+ }
+
+ /* drop port's i2c subdev refcount, i2c handles this itself */
+ if (ret == 0)
+ list_add_tail(&port->head, &i2c->ports);
+ return ret;
+}
+
+/******************************************************************************
+ * base i2c subdev class implementation
+ *****************************************************************************/
+
+static struct nouveau_i2c_port *
+nouveau_i2c_find(struct nouveau_i2c *i2c, u8 index)
+{
+ struct nouveau_bios *bios = nouveau_bios(i2c);
+ struct nouveau_i2c_port *port;
+
+ if (index == NV_I2C_DEFAULT(0) ||
+ index == NV_I2C_DEFAULT(1)) {
+ u8 ver, hdr, cnt, len;
+ u16 i2c = dcb_i2c_table(bios, &ver, &hdr, &cnt, &len);
+ if (i2c && ver >= 0x30) {
+ u8 auxidx = nv_ro08(bios, i2c + 4);
+ if (index == NV_I2C_DEFAULT(0))
+ index = (auxidx & 0x0f) >> 0;
+ else
+ index = (auxidx & 0xf0) >> 4;
+ } else {
+ index = 2;
+ }
+ }
+
+ list_for_each_entry(port, &i2c->ports, head) {
+ if (port->index == index)
+ return port;
+ }
+
+ return NULL;
+}
+
+static struct nouveau_i2c_port *
+nouveau_i2c_find_type(struct nouveau_i2c *i2c, u16 type)
+{
+ struct nouveau_i2c_port *port;
+
+ list_for_each_entry(port, &i2c->ports, head) {
+ if (nv_hclass(port) == type)
+ return port;
+ }
+
+ return NULL;
+}
+
+static int
+nouveau_i2c_identify(struct nouveau_i2c *i2c, int index, const char *what,
+ struct i2c_board_info *info,
+ bool (*match)(struct nouveau_i2c_port *,
+ struct i2c_board_info *))
+{
+ struct nouveau_i2c_port *port = nouveau_i2c_find(i2c, index);
+ int i;
+
+ if (!port) {
+ nv_debug(i2c, "no bus when probing %s on %d\n", what, index);
+ return -ENODEV;
+ }
+
+ nv_debug(i2c, "probing %ss on bus: %d\n", what, port->index);
+ for (i = 0; info[i].addr; i++) {
+ if (nv_probe_i2c(port, info[i].addr) &&
+ (!match || match(port, &info[i]))) {
+ nv_info(i2c, "detected %s: %s\n", what, info[i].type);
+ return i;
+ }
+ }
+
+ nv_debug(i2c, "no devices found.\n");
+ return -ENODEV;
+}
+
+int
+_nouveau_i2c_fini(struct nouveau_object *object, bool suspend)
+{
+ struct nouveau_i2c *i2c = (void *)object;
+ struct nouveau_i2c_port *port;
+ int ret;
+
+ list_for_each_entry(port, &i2c->ports, head) {
+ ret = nv_ofuncs(port)->fini(nv_object(port), suspend);
+ if (ret && suspend)
+ goto fail;
+ }
+
+ return nouveau_subdev_fini(&i2c->base, suspend);
+fail:
+ list_for_each_entry_continue_reverse(port, &i2c->ports, head) {
+ nv_ofuncs(port)->init(nv_object(port));
+ }
+
+ return ret;
+}
+
+int
+_nouveau_i2c_init(struct nouveau_object *object)
+{
+ struct nouveau_i2c *i2c = (void *)object;
+ struct nouveau_i2c_port *port;
+ int ret;
+
+ ret = nouveau_subdev_init(&i2c->base);
+ if (ret == 0) {
+ list_for_each_entry(port, &i2c->ports, head) {
+ ret = nv_ofuncs(port)->init(nv_object(port));
+ if (ret)
+ goto fail;
+ }
+ }
+
+ return ret;
+fail:
+ list_for_each_entry_continue_reverse(port, &i2c->ports, head) {
+ nv_ofuncs(port)->fini(nv_object(port), false);
+ }
+
+ return ret;
+}
+
+void
+_nouveau_i2c_dtor(struct nouveau_object *object)
+{
+ struct nouveau_i2c *i2c = (void *)object;
+ struct nouveau_i2c_port *port, *temp;
+
+ list_for_each_entry_safe(port, temp, &i2c->ports, head) {
+ nouveau_object_ref(NULL, (struct nouveau_object **)&port);
+ }
+
+ nouveau_subdev_destroy(&i2c->base);
+}
+
+static struct nouveau_oclass *
+nouveau_i2c_extdev_sclass[] = {
+ nouveau_anx9805_sclass,
+};
+
+int
+nouveau_i2c_create_(struct nouveau_object *parent,
+ struct nouveau_object *engine,
+ struct nouveau_oclass *oclass,
+ struct nouveau_oclass *sclass,
+ int length, void **pobject)
+{
+ struct nouveau_bios *bios = nouveau_bios(parent);
+ struct nouveau_i2c *i2c;
+ struct nouveau_object *object;
+ struct dcb_i2c_entry info;
+ int ret, i, j, index = -1;
+ struct dcb_output outp;
+ u8 ver, hdr;
+ u32 data;
+
+ ret = nouveau_subdev_create(parent, engine, oclass, 0,
+ "I2C", "i2c", &i2c);
+ *pobject = nv_object(i2c);
+ if (ret)
+ return ret;
+
+ i2c->find = nouveau_i2c_find;
+ i2c->find_type = nouveau_i2c_find_type;
+ i2c->identify = nouveau_i2c_identify;
+ INIT_LIST_HEAD(&i2c->ports);
+
+ while (!dcb_i2c_parse(bios, ++index, &info)) {
+ if (info.type == DCB_I2C_UNUSED)
+ continue;
+
+ oclass = sclass;
+ do {
+ ret = -EINVAL;
+ if (oclass->handle == info.type) {
+ ret = nouveau_object_ctor(*pobject, *pobject,
+ oclass, &info,
+ index, &object);
+ }
+ } while (ret && (++oclass)->handle);
+ }
+
+ /* in addition to the busses specified in the i2c table, there
+ * may be ddc/aux channels hiding behind external tmds/dp/etc
+ * transmitters.
+ */
+ index = ((index + 0x0f) / 0x10) * 0x10;
+ i = -1;
+ while ((data = dcb_outp_parse(bios, ++i, &ver, &hdr, &outp))) {
+ if (!outp.location || !outp.extdev)
+ continue;
+
+ switch (outp.type) {
+ case DCB_OUTPUT_TMDS:
+ info.type = NV_I2C_TYPE_EXTDDC(outp.extdev);
+ break;
+ case DCB_OUTPUT_DP:
+ info.type = NV_I2C_TYPE_EXTAUX(outp.extdev);
+ break;
+ default:
+ continue;
+ }
+
+ ret = -ENODEV;
+ j = -1;
+ while (ret && ++j < ARRAY_SIZE(nouveau_i2c_extdev_sclass)) {
+ parent = nv_object(i2c->find(i2c, outp.i2c_index));
+ oclass = nouveau_i2c_extdev_sclass[j];
+ do {
+ if (oclass->handle != info.type)
+ continue;
+ ret = nouveau_object_ctor(parent, *pobject,
+ oclass, NULL,
+ index++, &object);
+ } while (ret && (++oclass)->handle);
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/bit.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/bit.c
new file mode 100644
index 00000000..a6e72d3b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/bit.c
@@ -0,0 +1,232 @@
+/*
+ * 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 "subdev/i2c.h"
+
+#ifdef CONFIG_NOUVEAU_I2C_INTERNAL
+#define T_TIMEOUT 2200000
+#define T_RISEFALL 1000
+#define T_HOLD 5000
+
+static inline void
+i2c_drive_scl(struct nouveau_i2c_port *port, int state)
+{
+ port->func->drive_scl(port, state);
+}
+
+static inline void
+i2c_drive_sda(struct nouveau_i2c_port *port, int state)
+{
+ port->func->drive_sda(port, state);
+}
+
+static inline int
+i2c_sense_scl(struct nouveau_i2c_port *port)
+{
+ return port->func->sense_scl(port);
+}
+
+static inline int
+i2c_sense_sda(struct nouveau_i2c_port *port)
+{
+ return port->func->sense_sda(port);
+}
+
+static void
+i2c_delay(struct nouveau_i2c_port *port, u32 nsec)
+{
+ udelay((nsec + 500) / 1000);
+}
+
+static bool
+i2c_raise_scl(struct nouveau_i2c_port *port)
+{
+ u32 timeout = T_TIMEOUT / T_RISEFALL;
+
+ i2c_drive_scl(port, 1);
+ do {
+ i2c_delay(port, T_RISEFALL);
+ } while (!i2c_sense_scl(port) && --timeout);
+
+ return timeout != 0;
+}
+
+static int
+i2c_start(struct nouveau_i2c_port *port)
+{
+ int ret = 0;
+
+ if (!i2c_sense_scl(port) ||
+ !i2c_sense_sda(port)) {
+ i2c_drive_scl(port, 0);
+ i2c_drive_sda(port, 1);
+ if (!i2c_raise_scl(port))
+ ret = -EBUSY;
+ }
+
+ i2c_drive_sda(port, 0);
+ i2c_delay(port, T_HOLD);
+ i2c_drive_scl(port, 0);
+ i2c_delay(port, T_HOLD);
+ return ret;
+}
+
+static void
+i2c_stop(struct nouveau_i2c_port *port)
+{
+ i2c_drive_scl(port, 0);
+ i2c_drive_sda(port, 0);
+ i2c_delay(port, T_RISEFALL);
+
+ i2c_drive_scl(port, 1);
+ i2c_delay(port, T_HOLD);
+ i2c_drive_sda(port, 1);
+ i2c_delay(port, T_HOLD);
+}
+
+static int
+i2c_bitw(struct nouveau_i2c_port *port, int sda)
+{
+ i2c_drive_sda(port, sda);
+ i2c_delay(port, T_RISEFALL);
+
+ if (!i2c_raise_scl(port))
+ return -ETIMEDOUT;
+ i2c_delay(port, T_HOLD);
+
+ i2c_drive_scl(port, 0);
+ i2c_delay(port, T_HOLD);
+ return 0;
+}
+
+static int
+i2c_bitr(struct nouveau_i2c_port *port)
+{
+ int sda;
+
+ i2c_drive_sda(port, 1);
+ i2c_delay(port, T_RISEFALL);
+
+ if (!i2c_raise_scl(port))
+ return -ETIMEDOUT;
+ i2c_delay(port, T_HOLD);
+
+ sda = i2c_sense_sda(port);
+
+ i2c_drive_scl(port, 0);
+ i2c_delay(port, T_HOLD);
+ return sda;
+}
+
+static int
+i2c_get_byte(struct nouveau_i2c_port *port, u8 *byte, bool last)
+{
+ int i, bit;
+
+ *byte = 0;
+ for (i = 7; i >= 0; i--) {
+ bit = i2c_bitr(port);
+ if (bit < 0)
+ return bit;
+ *byte |= bit << i;
+ }
+
+ return i2c_bitw(port, last ? 1 : 0);
+}
+
+static int
+i2c_put_byte(struct nouveau_i2c_port *port, u8 byte)
+{
+ int i, ret;
+ for (i = 7; i >= 0; i--) {
+ ret = i2c_bitw(port, !!(byte & (1 << i)));
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = i2c_bitr(port);
+ if (ret == 1) /* nack */
+ ret = -EIO;
+ return ret;
+}
+
+static int
+i2c_addr(struct nouveau_i2c_port *port, struct i2c_msg *msg)
+{
+ u32 addr = msg->addr << 1;
+ if (msg->flags & I2C_M_RD)
+ addr |= 1;
+ return i2c_put_byte(port, addr);
+}
+
+static int
+i2c_bit_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+ struct nouveau_i2c_port *port = adap->algo_data;
+ struct i2c_msg *msg = msgs;
+ int ret = 0, mcnt = num;
+
+ if (port->func->acquire)
+ port->func->acquire(port);
+
+ while (!ret && mcnt--) {
+ u8 remaining = msg->len;
+ u8 *ptr = msg->buf;
+
+ ret = i2c_start(port);
+ if (ret == 0)
+ ret = i2c_addr(port, msg);
+
+ if (msg->flags & I2C_M_RD) {
+ while (!ret && remaining--)
+ ret = i2c_get_byte(port, ptr++, !remaining);
+ } else {
+ while (!ret && remaining--)
+ ret = i2c_put_byte(port, *ptr++);
+ }
+
+ msg++;
+ }
+
+ i2c_stop(port);
+ return (ret < 0) ? ret : num;
+}
+#else
+static int
+i2c_bit_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+ return -ENODEV;
+}
+#endif
+
+static u32
+i2c_bit_func(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+const struct i2c_algorithm nouveau_i2c_bit_algo = {
+ .master_xfer = i2c_bit_xfer,
+ .functionality = i2c_bit_func
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c
new file mode 100644
index 00000000..2ad18840
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c
@@ -0,0 +1,143 @@
+/*
+ * 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 <subdev/i2c.h>
+#include <subdev/vga.h>
+
+struct nv04_i2c_priv {
+ struct nouveau_i2c base;
+};
+
+struct nv04_i2c_port {
+ struct nouveau_i2c_port base;
+ u8 drive;
+ u8 sense;
+};
+
+static void
+nv04_i2c_drive_scl(struct nouveau_i2c_port *base, int state)
+{
+ struct nv04_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv04_i2c_port *port = (void *)base;
+ u8 val = nv_rdvgac(priv, 0, port->drive);
+ if (state) val |= 0x20;
+ else val &= 0xdf;
+ nv_wrvgac(priv, 0, port->drive, val | 0x01);
+}
+
+static void
+nv04_i2c_drive_sda(struct nouveau_i2c_port *base, int state)
+{
+ struct nv04_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv04_i2c_port *port = (void *)base;
+ u8 val = nv_rdvgac(priv, 0, port->drive);
+ if (state) val |= 0x10;
+ else val &= 0xef;
+ nv_wrvgac(priv, 0, port->drive, val | 0x01);
+}
+
+static int
+nv04_i2c_sense_scl(struct nouveau_i2c_port *base)
+{
+ struct nv04_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv04_i2c_port *port = (void *)base;
+ return !!(nv_rdvgac(priv, 0, port->sense) & 0x04);
+}
+
+static int
+nv04_i2c_sense_sda(struct nouveau_i2c_port *base)
+{
+ struct nv04_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv04_i2c_port *port = (void *)base;
+ return !!(nv_rdvgac(priv, 0, port->sense) & 0x08);
+}
+
+static const struct nouveau_i2c_func
+nv04_i2c_func = {
+ .drive_scl = nv04_i2c_drive_scl,
+ .drive_sda = nv04_i2c_drive_sda,
+ .sense_scl = nv04_i2c_sense_scl,
+ .sense_sda = nv04_i2c_sense_sda,
+};
+
+static int
+nv04_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 nv04_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 = &nv04_i2c_func;
+ port->drive = info->drive;
+ port->sense = info->sense;
+ return 0;
+}
+
+static struct nouveau_oclass
+nv04_i2c_sclass[] = {
+ { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NV04_BIT),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv04_i2c_port_ctor,
+ .dtor = _nouveau_i2c_port_dtor,
+ .init = _nouveau_i2c_port_init,
+ .fini = _nouveau_i2c_port_fini,
+ },
+ },
+ {}
+};
+
+static int
+nv04_i2c_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nv04_i2c_priv *priv;
+ int ret;
+
+ ret = nouveau_i2c_create(parent, engine, oclass, nv04_i2c_sclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+struct nouveau_oclass
+nv04_i2c_oclass = {
+ .handle = NV_SUBDEV(I2C, 0x04),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv04_i2c_ctor,
+ .dtor = _nouveau_i2c_dtor,
+ .init = _nouveau_i2c_init,
+ .fini = _nouveau_i2c_fini,
+ },
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c
new file mode 100644
index 00000000..f501ae25
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c
@@ -0,0 +1,135 @@
+/*
+ * 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 <subdev/i2c.h>
+#include <subdev/vga.h>
+
+struct nv4e_i2c_priv {
+ struct nouveau_i2c base;
+};
+
+struct nv4e_i2c_port {
+ struct nouveau_i2c_port base;
+ u32 addr;
+};
+
+static void
+nv4e_i2c_drive_scl(struct nouveau_i2c_port *base, int state)
+{
+ struct nv4e_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv4e_i2c_port *port = (void *)base;
+ nv_mask(priv, port->addr, 0x2f, state ? 0x21 : 0x01);
+}
+
+static void
+nv4e_i2c_drive_sda(struct nouveau_i2c_port *base, int state)
+{
+ struct nv4e_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv4e_i2c_port *port = (void *)base;
+ nv_mask(priv, port->addr, 0x1f, state ? 0x11 : 0x01);
+}
+
+static int
+nv4e_i2c_sense_scl(struct nouveau_i2c_port *base)
+{
+ struct nv4e_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv4e_i2c_port *port = (void *)base;
+ return !!(nv_rd32(priv, port->addr) & 0x00040000);
+}
+
+static int
+nv4e_i2c_sense_sda(struct nouveau_i2c_port *base)
+{
+ struct nv4e_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv4e_i2c_port *port = (void *)base;
+ return !!(nv_rd32(priv, port->addr) & 0x00080000);
+}
+
+static const struct nouveau_i2c_func
+nv4e_i2c_func = {
+ .drive_scl = nv4e_i2c_drive_scl,
+ .drive_sda = nv4e_i2c_drive_sda,
+ .sense_scl = nv4e_i2c_sense_scl,
+ .sense_sda = nv4e_i2c_sense_sda,
+};
+
+static int
+nv4e_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 nv4e_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 = &nv4e_i2c_func;
+ port->addr = 0x600800 + info->drive;
+ return 0;
+}
+
+static struct nouveau_oclass
+nv4e_i2c_sclass[] = {
+ { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NV4E_BIT),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv4e_i2c_port_ctor,
+ .dtor = _nouveau_i2c_port_dtor,
+ .init = _nouveau_i2c_port_init,
+ .fini = _nouveau_i2c_port_fini,
+ },
+ },
+ {}
+};
+
+static int
+nv4e_i2c_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nv4e_i2c_priv *priv;
+ int ret;
+
+ ret = nouveau_i2c_create(parent, engine, oclass, nv4e_i2c_sclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+struct nouveau_oclass
+nv4e_i2c_oclass = {
+ .handle = NV_SUBDEV(I2C, 0x4e),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv4e_i2c_ctor,
+ .dtor = _nouveau_i2c_dtor,
+ .init = _nouveau_i2c_init,
+ .fini = _nouveau_i2c_fini,
+ },
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c
new file mode 100644
index 00000000..378dfa32
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c
@@ -0,0 +1,149 @@
+/*
+ * 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
+nv50_i2c_drive_scl(struct nouveau_i2c_port *base, int state)
+{
+ struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv50_i2c_port *port = (void *)base;
+ if (state) port->state |= 0x01;
+ else port->state &= 0xfe;
+ nv_wr32(priv, port->addr, port->state);
+}
+
+void
+nv50_i2c_drive_sda(struct nouveau_i2c_port *base, int state)
+{
+ struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine;
+ struct nv50_i2c_port *port = (void *)base;
+ if (state) port->state |= 0x02;
+ else port->state &= 0xfd;
+ nv_wr32(priv, port->addr, port->state);
+}
+
+int
+nv50_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) & 0x00000001);
+}
+
+int
+nv50_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) & 0x00000002);
+}
+
+static const struct nouveau_i2c_func
+nv50_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,
+};
+
+const u32 nv50_i2c_addr[] = {
+ 0x00e138, 0x00e150, 0x00e168, 0x00e180,
+ 0x00e254, 0x00e274, 0x00e764, 0x00e780,
+ 0x00e79c, 0x00e7b8
+};
+const int nv50_i2c_addr_nr = ARRAY_SIZE(nv50_i2c_addr);
+
+static int
+nv50_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 = &nv50_i2c_func;
+ port->state = 0x00000007;
+ port->addr = nv50_i2c_addr[info->drive];
+ return 0;
+}
+
+int
+nv50_i2c_port_init(struct nouveau_object *object)
+{
+ struct nv50_i2c_priv *priv = (void *)object->engine;
+ struct nv50_i2c_port *port = (void *)object;
+ nv_wr32(priv, port->addr, port->state);
+ return nouveau_i2c_port_init(&port->base);
+}
+
+static struct nouveau_oclass
+nv50_i2c_sclass[] = {
+ { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv50_i2c_port_ctor,
+ .dtor = _nouveau_i2c_port_dtor,
+ .init = nv50_i2c_port_init,
+ .fini = _nouveau_i2c_port_fini,
+ },
+ },
+ {}
+};
+
+static int
+nv50_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, nv50_i2c_sclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+struct nouveau_oclass
+nv50_i2c_oclass = {
+ .handle = NV_SUBDEV(I2C, 0x50),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv50_i2c_ctor,
+ .dtor = _nouveau_i2c_dtor,
+ .init = _nouveau_i2c_init,
+ .fini = _nouveau_i2c_fini,
+ },
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.h b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.h
new file mode 100644
index 00000000..4e5ba48e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.h
@@ -0,0 +1,32 @@
+#ifndef __NV50_I2C_H__
+#define __NV50_I2C_H__
+
+#include <subdev/i2c.h>
+
+struct nv50_i2c_priv {
+ struct nouveau_i2c base;
+};
+
+struct nv50_i2c_port {
+ struct nouveau_i2c_port base;
+ u32 addr;
+ u32 ctrl;
+ u32 data;
+ u32 state;
+};
+
+extern const u32 nv50_i2c_addr[];
+extern const int nv50_i2c_addr_nr;
+int nv50_i2c_port_init(struct nouveau_object *);
+int nv50_i2c_sense_scl(struct nouveau_i2c_port *);
+int nv50_i2c_sense_sda(struct nouveau_i2c_port *);
+void nv50_i2c_drive_scl(struct nouveau_i2c_port *, int state);
+void nv50_i2c_drive_sda(struct nouveau_i2c_port *, int state);
+
+int nv94_aux_port_ctor(struct nouveau_object *, struct nouveau_object *,
+ struct nouveau_oclass *, void *, u32,
+ struct nouveau_object **);
+void nv94_i2c_acquire(struct nouveau_i2c_port *);
+void nv94_i2c_release(struct nouveau_i2c_port *);
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
new file mode 100644
index 00000000..61b77167
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c
@@ -0,0 +1,285 @@
+/*
+ * 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"
+
+#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, 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);
+
+ /* retry transaction a number of times on failure... */
+ ret = -EREMOTEIO;
+ for (retries = 0; 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);
+ goto out;
+ }
+ } while (ctrl & 0x00010000);
+
+ /* read status, and check if transaction completed ok */
+ stat = nv_mask(aux, 0x00e4e8 + (ch * 0x50), 0, 0);
+ if (!(stat & 0x000f0f00)) {
+ ret = 0;
+ break;
+ }
+
+ 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;
+}
+
+void
+nv94_i2c_acquire(struct nouveau_i2c_port *base)
+{
+ 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,
+ },
+};
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 00000000..f761b8a6
--- /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,
+ },
+};
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-15 19:29:47 +0000