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path: root/drivers/gpu/drm/nouveau/core/subdev/gpio
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Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/gpio')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/gpio/base.c271
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c169
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/gpio/nv50.c194
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/gpio/nvd0.c104
4 files changed, 738 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c
new file mode 100644
index 000000000000..abb135f74953
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c
@@ -0,0 +1,271 @@
+/*
+ * Copyright 2011 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/gpio.h>
+#include <subdev/bios.h>
+#include <subdev/bios/gpio.h>
+
+static int
+nouveau_gpio_drive(struct nouveau_gpio *gpio,
+ int idx, int line, int dir, int out)
+{
+ return gpio->drive ? gpio->drive(gpio, line, dir, out) : -ENODEV;
+}
+
+static int
+nouveau_gpio_sense(struct nouveau_gpio *gpio, int idx, int line)
+{
+ return gpio->sense ? gpio->sense(gpio, line) : -ENODEV;
+}
+
+static int
+nouveau_gpio_find(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line,
+ struct dcb_gpio_func *func)
+{
+ if (line == 0xff && tag == 0xff)
+ return -EINVAL;
+
+ if (!dcb_gpio_parse(nouveau_bios(gpio), idx, tag, line, func))
+ return 0;
+
+ /* Apple iMac G4 NV18 */
+ if (nv_device_match(nv_object(gpio), 0x0189, 0x10de, 0x0010)) {
+ if (tag == DCB_GPIO_TVDAC0) {
+ *func = (struct dcb_gpio_func) {
+ .func = DCB_GPIO_TVDAC0,
+ .line = 4,
+ .log[0] = 0,
+ .log[1] = 1,
+ };
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int
+nouveau_gpio_set(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, int state)
+{
+ struct dcb_gpio_func func;
+ int ret;
+
+ ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
+ if (ret == 0) {
+ int dir = !!(func.log[state] & 0x02);
+ int out = !!(func.log[state] & 0x01);
+ ret = nouveau_gpio_drive(gpio, idx, func.line, dir, out);
+ }
+
+ return ret;
+}
+
+static int
+nouveau_gpio_get(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line)
+{
+ struct dcb_gpio_func func;
+ int ret;
+
+ ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
+ if (ret == 0) {
+ ret = nouveau_gpio_sense(gpio, idx, func.line);
+ if (ret >= 0)
+ ret = (ret == (func.log[1] & 1));
+ }
+
+ return ret;
+}
+
+static int
+nouveau_gpio_irq(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, bool on)
+{
+ struct dcb_gpio_func func;
+ int ret;
+
+ ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
+ if (ret == 0) {
+ if (idx == 0 && gpio->irq_enable)
+ gpio->irq_enable(gpio, func.line, on);
+ else
+ ret = -ENODEV;
+ }
+
+ return ret;
+}
+
+struct gpio_isr {
+ struct nouveau_gpio *gpio;
+ struct list_head head;
+ struct work_struct work;
+ int idx;
+ struct dcb_gpio_func func;
+ void (*handler)(void *, int);
+ void *data;
+ bool inhibit;
+};
+
+static void
+nouveau_gpio_isr_bh(struct work_struct *work)
+{
+ struct gpio_isr *isr = container_of(work, struct gpio_isr, work);
+ struct nouveau_gpio *gpio = isr->gpio;
+ unsigned long flags;
+ int state;
+
+ state = nouveau_gpio_get(gpio, isr->idx, isr->func.func,
+ isr->func.line);
+ if (state >= 0)
+ isr->handler(isr->data, state);
+
+ spin_lock_irqsave(&gpio->lock, flags);
+ isr->inhibit = false;
+ spin_unlock_irqrestore(&gpio->lock, flags);
+}
+
+static void
+nouveau_gpio_isr_run(struct nouveau_gpio *gpio, int idx, u32 line_mask)
+{
+ struct gpio_isr *isr;
+
+ if (idx != 0)
+ return;
+
+ spin_lock(&gpio->lock);
+ list_for_each_entry(isr, &gpio->isr, head) {
+ if (line_mask & (1 << isr->func.line)) {
+ if (isr->inhibit)
+ continue;
+ isr->inhibit = true;
+ schedule_work(&isr->work);
+ }
+ }
+ spin_unlock(&gpio->lock);
+}
+
+static int
+nouveau_gpio_isr_add(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line,
+ void (*handler)(void *, int), void *data)
+{
+ struct gpio_isr *isr;
+ unsigned long flags;
+ int ret;
+
+ isr = kzalloc(sizeof(*isr), GFP_KERNEL);
+ if (!isr)
+ return -ENOMEM;
+
+ ret = nouveau_gpio_find(gpio, idx, tag, line, &isr->func);
+ if (ret) {
+ kfree(isr);
+ return ret;
+ }
+
+ INIT_WORK(&isr->work, nouveau_gpio_isr_bh);
+ isr->gpio = gpio;
+ isr->handler = handler;
+ isr->data = data;
+ isr->idx = idx;
+
+ spin_lock_irqsave(&gpio->lock, flags);
+ list_add(&isr->head, &gpio->isr);
+ spin_unlock_irqrestore(&gpio->lock, flags);
+ return 0;
+}
+
+static void
+nouveau_gpio_isr_del(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line,
+ void (*handler)(void *, int), void *data)
+{
+ struct gpio_isr *isr, *tmp;
+ struct dcb_gpio_func func;
+ unsigned long flags;
+ LIST_HEAD(tofree);
+ int ret;
+
+ ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
+ if (ret == 0) {
+ spin_lock_irqsave(&gpio->lock, flags);
+ list_for_each_entry_safe(isr, tmp, &gpio->isr, head) {
+ if (memcmp(&isr->func, &func, sizeof(func)) ||
+ isr->idx != idx ||
+ isr->handler != handler || isr->data != data)
+ continue;
+ list_move_tail(&isr->head, &tofree);
+ }
+ spin_unlock_irqrestore(&gpio->lock, flags);
+
+ list_for_each_entry_safe(isr, tmp, &tofree, head) {
+ flush_work_sync(&isr->work);
+ kfree(isr);
+ }
+ }
+}
+
+int
+nouveau_gpio_create_(struct nouveau_object *parent,
+ struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, int length, void **pobject)
+{
+ struct nouveau_gpio *gpio;
+ int ret;
+
+ ret = nouveau_subdev_create_(parent, engine, oclass, 0, "GPIO", "gpio",
+ length, pobject);
+ gpio = *pobject;
+ if (ret)
+ return ret;
+
+ gpio->find = nouveau_gpio_find;
+ gpio->set = nouveau_gpio_set;
+ gpio->get = nouveau_gpio_get;
+ gpio->irq = nouveau_gpio_irq;
+ gpio->isr_run = nouveau_gpio_isr_run;
+ gpio->isr_add = nouveau_gpio_isr_add;
+ gpio->isr_del = nouveau_gpio_isr_del;
+ INIT_LIST_HEAD(&gpio->isr);
+ spin_lock_init(&gpio->lock);
+ return 0;
+}
+
+static struct dmi_system_id gpio_reset_ids[] = {
+ {
+ .ident = "Apple Macbook 10,1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"),
+ }
+ },
+ { }
+};
+
+int
+nouveau_gpio_init(struct nouveau_gpio *gpio)
+{
+ int ret = nouveau_subdev_init(&gpio->base);
+ if (ret == 0 && gpio->reset) {
+ if (dmi_check_system(gpio_reset_ids))
+ gpio->reset(gpio);
+ }
+ return ret;
+}
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c
new file mode 100644
index 000000000000..168d16a9a8e9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv10.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2009 Francisco Jerez.
+ * All Rights Reserved.
+ *
+ * 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 (including the
+ * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
+ *
+ */
+
+#include <subdev/gpio.h>
+
+struct nv10_gpio_priv {
+ struct nouveau_gpio base;
+};
+
+static int
+nv10_gpio_sense(struct nouveau_gpio *gpio, int line)
+{
+ if (line < 2) {
+ line = line * 16;
+ line = nv_rd32(gpio, 0x600818) >> line;
+ return !!(line & 0x0100);
+ } else
+ if (line < 10) {
+ line = (line - 2) * 4;
+ line = nv_rd32(gpio, 0x60081c) >> line;
+ return !!(line & 0x04);
+ } else
+ if (line < 14) {
+ line = (line - 10) * 4;
+ line = nv_rd32(gpio, 0x600850) >> line;
+ return !!(line & 0x04);
+ }
+
+ return -EINVAL;
+}
+
+static int
+nv10_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out)
+{
+ u32 reg, mask, data;
+
+ if (line < 2) {
+ line = line * 16;
+ reg = 0x600818;
+ mask = 0x00000011;
+ data = (dir << 4) | out;
+ } else
+ if (line < 10) {
+ line = (line - 2) * 4;
+ reg = 0x60081c;
+ mask = 0x00000003;
+ data = (dir << 1) | out;
+ } else
+ if (line < 14) {
+ line = (line - 10) * 4;
+ reg = 0x600850;
+ mask = 0x00000003;
+ data = (dir << 1) | out;
+ } else {
+ return -EINVAL;
+ }
+
+ nv_mask(gpio, reg, mask << line, data << line);
+ return 0;
+}
+
+static void
+nv10_gpio_irq_enable(struct nouveau_gpio *gpio, int line, bool on)
+{
+ u32 mask = 0x00010001 << line;
+
+ nv_wr32(gpio, 0x001104, mask);
+ nv_mask(gpio, 0x001144, mask, on ? mask : 0);
+}
+
+static void
+nv10_gpio_intr(struct nouveau_subdev *subdev)
+{
+ struct nv10_gpio_priv *priv = (void *)subdev;
+ u32 intr = nv_rd32(priv, 0x001104);
+ u32 hi = (intr & 0x0000ffff) >> 0;
+ u32 lo = (intr & 0xffff0000) >> 16;
+
+ priv->base.isr_run(&priv->base, 0, hi | lo);
+
+ nv_wr32(priv, 0x001104, intr);
+}
+
+static int
+nv10_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nv10_gpio_priv *priv;
+ int ret;
+
+ ret = nouveau_gpio_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ priv->base.drive = nv10_gpio_drive;
+ priv->base.sense = nv10_gpio_sense;
+ priv->base.irq_enable = nv10_gpio_irq_enable;
+ nv_subdev(priv)->intr = nv10_gpio_intr;
+ return 0;
+}
+
+static void
+nv10_gpio_dtor(struct nouveau_object *object)
+{
+ struct nv10_gpio_priv *priv = (void *)object;
+ nouveau_gpio_destroy(&priv->base);
+}
+
+static int
+nv10_gpio_init(struct nouveau_object *object)
+{
+ struct nv10_gpio_priv *priv = (void *)object;
+ int ret;
+
+ ret = nouveau_gpio_init(&priv->base);
+ if (ret)
+ return ret;
+
+ nv_wr32(priv, 0x001140, 0x00000000);
+ nv_wr32(priv, 0x001100, 0xffffffff);
+ nv_wr32(priv, 0x001144, 0x00000000);
+ nv_wr32(priv, 0x001104, 0xffffffff);
+ return 0;
+}
+
+static int
+nv10_gpio_fini(struct nouveau_object *object, bool suspend)
+{
+ struct nv10_gpio_priv *priv = (void *)object;
+ nv_wr32(priv, 0x001140, 0x00000000);
+ nv_wr32(priv, 0x001144, 0x00000000);
+ return nouveau_gpio_fini(&priv->base, suspend);
+}
+
+struct nouveau_oclass
+nv10_gpio_oclass = {
+ .handle = NV_SUBDEV(GPIO, 0x10),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv10_gpio_ctor,
+ .dtor = nv10_gpio_dtor,
+ .init = nv10_gpio_init,
+ .fini = nv10_gpio_fini,
+ },
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv50.c
new file mode 100644
index 000000000000..f3502c961cd9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/nv50.c
@@ -0,0 +1,194 @@
+/*
+ * 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/gpio.h>
+
+struct nv50_gpio_priv {
+ struct nouveau_gpio base;
+};
+
+static void
+nv50_gpio_reset(struct nouveau_gpio *gpio)
+{
+ struct nouveau_bios *bios = nouveau_bios(gpio);
+ struct nv50_gpio_priv *priv = (void *)gpio;
+ u16 entry;
+ u8 ver;
+ int ent = -1;
+
+ while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver))) {
+ static const u32 regs[] = { 0xe100, 0xe28c };
+ u32 data = nv_ro32(bios, entry);
+ u8 line = (data & 0x0000001f);
+ u8 func = (data & 0x0000ff00) >> 8;
+ u8 defs = !!(data & 0x01000000);
+ u8 unk0 = !!(data & 0x02000000);
+ u8 unk1 = !!(data & 0x04000000);
+ u32 val = (unk1 << 16) | unk0;
+ u32 reg = regs[line >> 4]; line &= 0x0f;
+
+ if (func == 0xff)
+ continue;
+
+ gpio->set(gpio, 0, func, line, defs);
+
+ nv_mask(priv, reg, 0x00010001 << line, val << line);
+ }
+}
+
+static int
+nv50_gpio_location(int line, u32 *reg, u32 *shift)
+{
+ const u32 nv50_gpio_reg[4] = { 0xe104, 0xe108, 0xe280, 0xe284 };
+
+ if (line >= 32)
+ return -EINVAL;
+
+ *reg = nv50_gpio_reg[line >> 3];
+ *shift = (line & 7) << 2;
+ return 0;
+}
+
+static int
+nv50_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out)
+{
+ u32 reg, shift;
+
+ if (nv50_gpio_location(line, &reg, &shift))
+ return -EINVAL;
+
+ nv_mask(gpio, reg, 7 << shift, (((dir ^ 1) << 1) | out) << shift);
+ return 0;
+}
+
+static int
+nv50_gpio_sense(struct nouveau_gpio *gpio, int line)
+{
+ u32 reg, shift;
+
+ if (nv50_gpio_location(line, &reg, &shift))
+ return -EINVAL;
+
+ return !!(nv_rd32(gpio, reg) & (4 << shift));
+}
+
+void
+nv50_gpio_irq_enable(struct nouveau_gpio *gpio, int line, bool on)
+{
+ u32 reg = line < 16 ? 0xe050 : 0xe070;
+ u32 mask = 0x00010001 << (line & 0xf);
+
+ nv_wr32(gpio, reg + 4, mask);
+ nv_mask(gpio, reg + 0, mask, on ? mask : 0);
+}
+
+void
+nv50_gpio_intr(struct nouveau_subdev *subdev)
+{
+ struct nv50_gpio_priv *priv = (void *)subdev;
+ u32 intr0, intr1 = 0;
+ u32 hi, lo;
+
+ intr0 = nv_rd32(priv, 0xe054) & nv_rd32(priv, 0xe050);
+ if (nv_device(priv)->chipset >= 0x90)
+ intr1 = nv_rd32(priv, 0xe074) & nv_rd32(priv, 0xe070);
+
+ hi = (intr0 & 0x0000ffff) | (intr1 << 16);
+ lo = (intr0 >> 16) | (intr1 & 0xffff0000);
+ priv->base.isr_run(&priv->base, 0, hi | lo);
+
+ nv_wr32(priv, 0xe054, intr0);
+ if (nv_device(priv)->chipset >= 0x90)
+ nv_wr32(priv, 0xe074, intr1);
+}
+
+static int
+nv50_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nv50_gpio_priv *priv;
+ int ret;
+
+ ret = nouveau_gpio_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ priv->base.reset = nv50_gpio_reset;
+ priv->base.drive = nv50_gpio_drive;
+ priv->base.sense = nv50_gpio_sense;
+ priv->base.irq_enable = nv50_gpio_irq_enable;
+ nv_subdev(priv)->intr = nv50_gpio_intr;
+ return 0;
+}
+
+void
+nv50_gpio_dtor(struct nouveau_object *object)
+{
+ struct nv50_gpio_priv *priv = (void *)object;
+ nouveau_gpio_destroy(&priv->base);
+}
+
+int
+nv50_gpio_init(struct nouveau_object *object)
+{
+ struct nv50_gpio_priv *priv = (void *)object;
+ int ret;
+
+ ret = nouveau_gpio_init(&priv->base);
+ if (ret)
+ return ret;
+
+ /* disable, and ack any pending gpio interrupts */
+ nv_wr32(priv, 0xe050, 0x00000000);
+ nv_wr32(priv, 0xe054, 0xffffffff);
+ if (nv_device(priv)->chipset >= 0x90) {
+ nv_wr32(priv, 0xe070, 0x00000000);
+ nv_wr32(priv, 0xe074, 0xffffffff);
+ }
+
+ return 0;
+}
+
+int
+nv50_gpio_fini(struct nouveau_object *object, bool suspend)
+{
+ struct nv50_gpio_priv *priv = (void *)object;
+ nv_wr32(priv, 0xe050, 0x00000000);
+ if (nv_device(priv)->chipset >= 0x90)
+ nv_wr32(priv, 0xe070, 0x00000000);
+ return nouveau_gpio_fini(&priv->base, suspend);
+}
+
+struct nouveau_oclass
+nv50_gpio_oclass = {
+ .handle = NV_SUBDEV(GPIO, 0x50),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nv50_gpio_ctor,
+ .dtor = nv50_gpio_dtor,
+ .init = nv50_gpio_init,
+ .fini = nv50_gpio_fini,
+ },
+};
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/nvd0.c
new file mode 100644
index 000000000000..8d18fcad26e0
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/nvd0.c
@@ -0,0 +1,104 @@
+/*
+ * 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/gpio.h>
+
+struct nvd0_gpio_priv {
+ struct nouveau_gpio base;
+};
+
+static void
+nvd0_gpio_reset(struct nouveau_gpio *gpio)
+{
+ struct nouveau_bios *bios = nouveau_bios(gpio);
+ struct nvd0_gpio_priv *priv = (void *)gpio;
+ u16 entry;
+ u8 ver;
+ int ent = -1;
+
+ while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver))) {
+ u32 data = nv_ro32(bios, entry);
+ u8 line = (data & 0x0000003f);
+ u8 defs = !!(data & 0x00000080);
+ u8 func = (data & 0x0000ff00) >> 8;
+ u8 unk0 = (data & 0x00ff0000) >> 16;
+ u8 unk1 = (data & 0x1f000000) >> 24;
+
+ if (func == 0xff)
+ continue;
+
+ gpio->set(gpio, 0, func, line, defs);
+
+ nv_mask(priv, 0x00d610 + (line * 4), 0xff, unk0);
+ if (unk1--)
+ nv_mask(priv, 0x00d740 + (unk1 * 4), 0xff, line);
+ }
+}
+
+static int
+nvd0_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out)
+{
+ u32 data = ((dir ^ 1) << 13) | (out << 12);
+ nv_mask(gpio, 0x00d610 + (line * 4), 0x00003000, data);
+ nv_mask(gpio, 0x00d604, 0x00000001, 0x00000001); /* update? */
+ return 0;
+}
+
+static int
+nvd0_gpio_sense(struct nouveau_gpio *gpio, int line)
+{
+ return !!(nv_rd32(gpio, 0x00d610 + (line * 4)) & 0x00004000);
+}
+
+static int
+nvd0_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nvd0_gpio_priv *priv;
+ int ret;
+
+ ret = nouveau_gpio_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ priv->base.reset = nvd0_gpio_reset;
+ priv->base.drive = nvd0_gpio_drive;
+ priv->base.sense = nvd0_gpio_sense;
+ priv->base.irq_enable = nv50_gpio_irq_enable;
+ nv_subdev(priv)->intr = nv50_gpio_intr;
+ return 0;
+}
+
+struct nouveau_oclass
+nvd0_gpio_oclass = {
+ .handle = NV_SUBDEV(GPIO, 0xd0),
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nvd0_gpio_ctor,
+ .dtor = nv50_gpio_dtor,
+ .init = nv50_gpio_init,
+ .fini = nv50_gpio_fini,
+ },
+};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.