summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c
new file mode 100644
index 000000000..9efb1b48c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/disp.c
@@ -0,0 +1,174 @@
+/*
+ * 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 nvkm_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 = nvbios_rd16(bios, U.offset);
+ if (data) {
+ *ver = nvbios_rd08(bios, data + 0x00);
+ switch (*ver) {
+ case 0x20:
+ case 0x21:
+ case 0x22:
+ *hdr = nvbios_rd08(bios, data + 0x01);
+ *len = nvbios_rd08(bios, data + 0x02);
+ *cnt = nvbios_rd08(bios, data + 0x03);
+ *sub = nvbios_rd08(bios, data + 0x04);
+ return data;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return 0x0000;
+}
+
+u16
+nvbios_disp_entry(struct nvkm_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 nvkm_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 = nvbios_rd16(bios, data + 0);
+ return data;
+ }
+ return 0x0000;
+}
+
+u16
+nvbios_outp_entry(struct nvkm_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 = nvbios_rd08(bios, info.data + 0x05);
+ *len = 0x06;
+ data = info.data;
+ }
+ return data;
+}
+
+u16
+nvbios_outp_parse(struct nvkm_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 = nvbios_rd16(bios, data + 0x00);
+ info->mask = nvbios_rd32(bios, data + 0x02);
+ if (*ver <= 0x20) /* match any link */
+ info->mask |= 0x00c0;
+ info->script[0] = nvbios_rd16(bios, data + 0x06);
+ info->script[1] = nvbios_rd16(bios, data + 0x08);
+ info->script[2] = 0x0000;
+ if (*hdr >= 0x0c)
+ info->script[2] = nvbios_rd16(bios, data + 0x0a);
+ return data;
+ }
+ return 0x0000;
+}
+
+u16
+nvbios_outp_match(struct nvkm_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 nvkm_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 nvkm_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->proto = nvbios_rd08(bios, data + 0x00);
+ info->flags = nvbios_rd16(bios, data + 0x01);
+ info->clkcmp[0] = nvbios_rd16(bios, data + 0x02);
+ info->clkcmp[1] = nvbios_rd16(bios, data + 0x04);
+ }
+ return data;
+}
+
+u16
+nvbios_ocfg_match(struct nvkm_bios *bios, u16 outp, u8 proto, u8 flags,
+ 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->proto == proto || info->proto == 0xff) &&
+ (info->flags == flags))
+ break;
+ }
+ return data;
+}
+
+u16
+nvbios_oclk_match(struct nvkm_bios *bios, u16 cmp, u32 khz)
+{
+ while (cmp) {
+ if (khz / 10 >= nvbios_rd16(bios, cmp + 0x00))
+ return nvbios_rd16(bios, cmp + 0x02);
+ cmp += 0x04;
+ }
+ return 0x0000;
+}