1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_2000.c b/drivers/gpu/drm/ast/ast_2000.c
new file mode 100644
index 000000000000..41c2aa1e425a
--- /dev/null
+++ b/drivers/gpu/drm/ast/ast_2000.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: MIT
+/*
+ * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ */
+/*
+ * Authors: Dave Airlie <airlied@redhat.com>
+ */
+
+#include <linux/delay.h>
+
+#include "ast_drv.h"
+#include "ast_post.h"
+
+/*
+ * POST
+ */
+
+void ast_2000_set_def_ext_reg(struct ast_device *ast)
+{
+	static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff };
+	u8 i, index, reg;
+	const u8 *ext_reg_info;
+
+	/* reset scratch */
+	for (i = 0x81; i <= 0x9f; i++)
+		ast_set_index_reg(ast, AST_IO_VGACRI, i, 0x00);
+
+	ext_reg_info = extreginfo;
+	index = 0xa0;
+	while (*ext_reg_info != 0xff) {
+		ast_set_index_reg_mask(ast, AST_IO_VGACRI, index, 0x00, *ext_reg_info);
+		index++;
+		ext_reg_info++;
+	}
+
+	/* disable standard IO/MEM decode if secondary */
+	/* ast_set_index_reg-mask(ast, AST_IO_VGACRI, 0xa1, 0xff, 0x3); */
+
+	/* Set Ext. Default */
+	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x8c, 0x00, 0x01);
+	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb7, 0x00, 0x00);
+
+	/* Enable RAMDAC for A1 */
+	reg = 0x04;
+	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xff, reg);
+}
+
+static const struct ast_dramstruct ast2000_dram_table_data[] = {
+	{ 0x0108, 0x00000000 },
+	{ 0x0120, 0x00004a21 },
+	AST_DRAMSTRUCT_UDELAY(67u),
+	{ 0x0000, 0xFFFFFFFF },
+	AST_DRAMSTRUCT_INIT(DRAM_TYPE, 0x00000089),
+	{ 0x0008, 0x22331353 },
+	{ 0x000C, 0x0d07000b },
+	{ 0x0010, 0x11113333 },
+	{ 0x0020, 0x00110350 },
+	{ 0x0028, 0x1e0828f0 },
+	{ 0x0024, 0x00000001 },
+	{ 0x001C, 0x00000000 },
+	{ 0x0014, 0x00000003 },
+	AST_DRAMSTRUCT_UDELAY(67u),
+	{ 0x0018, 0x00000131 },
+	{ 0x0014, 0x00000001 },
+	AST_DRAMSTRUCT_UDELAY(67u),
+	{ 0x0018, 0x00000031 },
+	{ 0x0014, 0x00000001 },
+	AST_DRAMSTRUCT_UDELAY(67u),
+	{ 0x0028, 0x1e0828f1 },
+	{ 0x0024, 0x00000003 },
+	{ 0x002C, 0x1f0f28fb },
+	{ 0x0030, 0xFFFFFE01 },
+	AST_DRAMSTRUCT_INVALID,
+};
+
+static void ast_post_chip_2000(struct ast_device *ast)
+{
+	u8 j;
+	u32 temp, i;
+	const struct ast_dramstruct *dram_reg_info;
+
+	j = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff);
+
+	if ((j & 0x80) == 0) { /* VGA only */
+		dram_reg_info = ast2000_dram_table_data;
+		ast_write32(ast, 0xf004, 0x1e6e0000);
+		ast_write32(ast, 0xf000, 0x1);
+		ast_write32(ast, 0x10100, 0xa8);
+
+		do {
+			;
+		} while (ast_read32(ast, 0x10100) != 0xa8);
+
+		while (!AST_DRAMSTRUCT_IS(dram_reg_info, INVALID)) {
+			if (AST_DRAMSTRUCT_IS(dram_reg_info, UDELAY)) {
+				for (i = 0; i < 15; i++)
+					udelay(dram_reg_info->data);
+			} else {
+				ast_write32(ast, 0x10000 + dram_reg_info->index,
+					    dram_reg_info->data);
+			}
+			dram_reg_info++;
+		}
+
+		temp = ast_read32(ast, 0x10140);
+		ast_write32(ast, 0x10140, temp | 0x40);
+	}
+
+	/* wait ready */
+	do {
+		j = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff);
+	} while ((j & 0x40) == 0);
+}
+
+int ast_2000_post(struct ast_device *ast)
+{
+	ast_2000_set_def_ext_reg(ast);
+
+	if (ast->config_mode == ast_use_p2a) {
+		ast_post_chip_2000(ast);
+	} else {
+		if (ast->tx_chip == AST_TX_SIL164) {
+			/* Enable DVO */
+			ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x80);
+		}
+	}
+
+	return 0;
+}