These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / gpio / gf119.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gf119.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gf119.c
new file mode 100644 (file)
index 0000000..bb7400d
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gf119.c
@@ -0,0 +1,86 @@
+/*
+ * 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 "priv.h"
+
+void
+gf119_gpio_reset(struct nvkm_gpio *gpio, u8 match)
+{
+       struct nvkm_device *device = gpio->subdev.device;
+       struct nvkm_bios *bios = device->bios;
+       u8 ver, len;
+       u16 entry;
+       int ent = -1;
+
+       while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) {
+               u32 data = nvbios_rd32(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  == DCB_GPIO_UNUSED ||
+                   (match != DCB_GPIO_UNUSED && match != func))
+                       continue;
+
+               nvkm_gpio_set(gpio, 0, func, line, defs);
+
+               nvkm_mask(device, 0x00d610 + (line * 4), 0xff, unk0);
+               if (unk1--)
+                       nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line);
+       }
+}
+
+int
+gf119_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)
+{
+       struct nvkm_device *device = gpio->subdev.device;
+       u32 data = ((dir ^ 1) << 13) | (out << 12);
+       nvkm_mask(device, 0x00d610 + (line * 4), 0x00003000, data);
+       nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */
+       return 0;
+}
+
+int
+gf119_gpio_sense(struct nvkm_gpio *gpio, int line)
+{
+       struct nvkm_device *device = gpio->subdev.device;
+       return !!(nvkm_rd32(device, 0x00d610 + (line * 4)) & 0x00004000);
+}
+
+static const struct nvkm_gpio_func
+gf119_gpio = {
+       .lines = 32,
+       .intr_stat = g94_gpio_intr_stat,
+       .intr_mask = g94_gpio_intr_mask,
+       .drive = gf119_gpio_drive,
+       .sense = gf119_gpio_sense,
+       .reset = gf119_gpio_reset,
+};
+
+int
+gf119_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio)
+{
+       return nvkm_gpio_new_(&gf119_gpio, device, index, pgpio);
+}