1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/pll.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/pll.h
new file mode 100644
index 000000000000..b2f3d4d0aa49
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/pll.h
@@ -0,0 +1,79 @@
+#ifndef __NVBIOS_PLL_H__
+#define __NVBIOS_PLL_H__
+
+/*XXX: kill me */
+struct nouveau_pll_vals {
+	union {
+		struct {
+#ifdef __BIG_ENDIAN
+			uint8_t N1, M1, N2, M2;
+#else
+			uint8_t M1, N1, M2, N2;
+#endif
+		};
+		struct {
+			uint16_t NM1, NM2;
+		} __attribute__((packed));
+	};
+	int log2P;
+
+	int refclk;
+};
+
+struct nouveau_bios;
+
+/* these match types in pll limits table version 0x40,
+ * nouveau uses them on all chipsets internally where a
+ * specific pll needs to be referenced, but the exact
+ * register isn't known.
+ */
+enum nvbios_pll_type {
+	PLL_CORE   = 0x01,
+	PLL_SHADER = 0x02,
+	PLL_UNK03  = 0x03,
+	PLL_MEMORY = 0x04,
+	PLL_VDEC   = 0x05,
+	PLL_UNK40  = 0x40,
+	PLL_UNK41  = 0x41,
+	PLL_UNK42  = 0x42,
+	PLL_VPLL0  = 0x80,
+	PLL_VPLL1  = 0x81,
+	PLL_VPLL2  = 0x82,
+	PLL_VPLL3  = 0x83,
+	PLL_MAX    = 0xff
+};
+
+struct nvbios_pll {
+	enum nvbios_pll_type type;
+	u32 reg;
+	u32 refclk;
+
+	u8 min_p;
+	u8 max_p;
+	u8 bias_p;
+
+	/*
+	 * for most pre nv50 cards setting a log2P of 7 (the common max_log2p
+	 * value) is no different to 6 (at least for vplls) so allowing the MNP
+	 * calc to use 7 causes the generated clock to be out by a factor of 2.
+	 * however, max_log2p cannot be fixed-up during parsing as the
+	 * unmodified max_log2p value is still needed for setting mplls, hence
+	 * an additional max_usable_log2p member
+	 */
+	u8 max_p_usable;
+
+	struct {
+		u32 min_freq;
+		u32 max_freq;
+		u32 min_inputfreq;
+		u32 max_inputfreq;
+		u8  min_m;
+		u8  max_m;
+		u8  min_n;
+		u8  max_n;
+	} vco1, vco2;
+};
+
+int nvbios_pll_parse(struct nouveau_bios *, u32 type, struct nvbios_pll *);
+
+#endif