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authorBen Skeggs <bskeggs@redhat.com>2012-11-02 01:02:47 (GMT)
committerBen Skeggs <bskeggs@redhat.com>2012-11-28 23:57:43 (GMT)
commitb6caea505879c4a606cf364442fd1f06f6c40e30 (patch)
tree88b8e1c32f0a3addf120f495d95366c88037542e
parentb5a794b0f1fdf17b92ed4f8a63ed23c7a3325841 (diff)
downloadlinux-fsl-qoriq-b6caea505879c4a606cf364442fd1f06f6c40e30.tar.xz
drm/nouveau/bios: implement BIT 'U' table (and subtable) parsing in core
This will, in the near future, replace what's currently in the DRM nouveau_bios.c code. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
-rw-r--r--drivers/gpu/drm/nouveau/Makefile1
-rw-r--r--drivers/gpu/drm/nouveau/core/include/subdev/bios/disp.h48
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/bios/disp.c178
3 files changed, 227 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index 4219dc5..2ca1d39 100644
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -29,6 +29,7 @@ nouveau-y += core/subdev/bios/base.o
nouveau-y += core/subdev/bios/bit.o
nouveau-y += core/subdev/bios/conn.o
nouveau-y += core/subdev/bios/dcb.o
+nouveau-y += core/subdev/bios/disp.o
nouveau-y += core/subdev/bios/dp.o
nouveau-y += core/subdev/bios/extdev.o
nouveau-y += core/subdev/bios/gpio.o
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/disp.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/disp.h
new file mode 100644
index 0000000..c35937e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/disp.h
@@ -0,0 +1,48 @@
+#ifndef __NVBIOS_DISP_H__
+#define __NVBIOS_DISP_H__
+
+u16 nvbios_disp_table(struct nouveau_bios *,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub);
+
+struct nvbios_disp {
+ u16 data;
+};
+
+u16 nvbios_disp_entry(struct nouveau_bios *, u8 idx,
+ u8 *ver, u8 *hdr__, u8 *sub);
+u16 nvbios_disp_parse(struct nouveau_bios *, u8 idx,
+ u8 *ver, u8 *hdr__, u8 *sub,
+ struct nvbios_disp *);
+
+struct nvbios_outp {
+ u16 type;
+ u16 mask;
+ u16 script[3];
+};
+
+u16 nvbios_outp_entry(struct nouveau_bios *, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
+u16 nvbios_outp_parse(struct nouveau_bios *, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_outp *);
+u16 nvbios_outp_match(struct nouveau_bios *, u16 type, u16 mask,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_outp *);
+
+
+struct nvbios_ocfg {
+ u16 match;
+ u16 clkcmp[2];
+};
+
+u16 nvbios_ocfg_entry(struct nouveau_bios *, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
+u16 nvbios_ocfg_parse(struct nouveau_bios *, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_ocfg *);
+u16 nvbios_ocfg_match(struct nouveau_bios *, u16 outp, u16 type,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_ocfg *);
+u16 nvbios_oclk_match(struct nouveau_bios *, u16 cmp, u32 khz);
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/disp.c b/drivers/gpu/drm/nouveau/core/subdev/bios/disp.c
new file mode 100644
index 0000000..7f16e52
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/disp.c
@@ -0,0 +1,178 @@
+/*
+ * 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/bios.h>
+#include <subdev/bios/bit.h>
+#include <subdev/bios/disp.h>
+
+u16
+nvbios_disp_table(struct nouveau_bios *bios,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub)
+{
+ struct bit_entry U;
+
+ if (!bit_entry(bios, 'U', &U)) {
+ if (U.version == 1) {
+ u16 data = nv_ro16(bios, U.offset);
+ if (data) {
+ *ver = nv_ro08(bios, data + 0x00);
+ switch (*ver) {
+ case 0x20:
+ case 0x21:
+ *hdr = nv_ro08(bios, data + 0x01);
+ *len = nv_ro08(bios, data + 0x02);
+ *cnt = nv_ro08(bios, data + 0x03);
+ *sub = nv_ro08(bios, data + 0x04);
+ return data;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return 0x0000;
+}
+
+u16
+nvbios_disp_entry(struct nouveau_bios *bios, u8 idx,
+ u8 *ver, u8 *len, u8 *sub)
+{
+ u8 hdr, cnt;
+ u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub);
+ if (data && idx < cnt)
+ return data + hdr + (idx * *len);
+ *ver = 0x00;
+ return 0x0000;
+}
+
+u16
+nvbios_disp_parse(struct nouveau_bios *bios, u8 idx,
+ u8 *ver, u8 *len, u8 *sub,
+ struct nvbios_disp *info)
+{
+ u16 data = nvbios_disp_entry(bios, idx, ver, len, sub);
+ if (data && *len >= 2) {
+ info->data = nv_ro16(bios, data + 0);
+ return data;
+ }
+ return 0x0000;
+}
+
+u16
+nvbios_outp_entry(struct nouveau_bios *bios, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ struct nvbios_disp info;
+ u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info);
+ if (data) {
+ *cnt = nv_ro08(bios, info.data + 0x05);
+ *len = 0x06;
+ data = info.data;
+ }
+ return data;
+}
+
+u16
+nvbios_outp_parse(struct nouveau_bios *bios, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_outp *info)
+{
+ u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len);
+ if (data && *hdr >= 0x0a) {
+ info->type = nv_ro16(bios, data + 0x00);
+ info->mask = nv_ro32(bios, data + 0x02);
+ if (*ver <= 0x20) /* match any link */
+ info->mask |= 0x00c0;
+ info->script[0] = nv_ro16(bios, data + 0x06);
+ info->script[1] = nv_ro16(bios, data + 0x08);
+ info->script[2] = 0x0000;
+ if (*hdr >= 0x0c)
+ info->script[2] = nv_ro16(bios, data + 0x0a);
+ return data;
+ }
+ return 0x0000;
+}
+
+u16
+nvbios_outp_match(struct nouveau_bios *bios, u16 type, u16 mask,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_outp *info)
+{
+ u16 data, idx = 0;
+ while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) {
+ if (data && info->type == type) {
+ if ((info->mask & mask) == mask)
+ break;
+ }
+ }
+ return data;
+}
+
+u16
+nvbios_ocfg_entry(struct nouveau_bios *bios, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ if (idx < *cnt)
+ return outp + *hdr + (idx * *len);
+ return 0x0000;
+}
+
+u16
+nvbios_ocfg_parse(struct nouveau_bios *bios, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_ocfg *info)
+{
+ u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len);
+ if (data) {
+ info->match = nv_ro16(bios, data + 0x00);
+ info->clkcmp[0] = nv_ro16(bios, data + 0x02);
+ info->clkcmp[1] = nv_ro16(bios, data + 0x04);
+ }
+ return data;
+}
+
+u16
+nvbios_ocfg_match(struct nouveau_bios *bios, u16 outp, u16 type,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_ocfg *info)
+{
+ u16 data, idx = 0;
+ while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) {
+ if (info->match == type)
+ break;
+ }
+ return data;
+}
+
+u16
+nvbios_oclk_match(struct nouveau_bios *bios, u16 cmp, u32 khz)
+{
+ while (cmp) {
+ if (khz / 10 >= nv_ro16(bios, cmp + 0x00))
+ return nv_ro16(bios, cmp + 0x02);
+ cmp += 0x04;
+ }
+ return 0x0000;
+}