1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/misc/sprd_otp/otp-bitmap.c b/drivers/misc/sprd_otp/otp-bitmap.c
new file mode 100644
index 00000000..d3e64c2d
--- /dev/null
+++ b/drivers/misc/sprd_otp/otp-bitmap.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2014 Spreadtrum Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include "sprd_otp.h"
+
+u32 __adie_efuse_read_bits(int bit_index, int length);
+
+struct otp_bitmap {
+	const char *name;	/* MUST same as sc2723-regulators.dtsi */
+	int bits_idx, bits_len;/* field bits offset and length */
+};
+
+const struct otp_bitmap otp_bitmap[] = {
+	/* regulator name,   block, offset, length */
+	//DCDC (6)
+	{"vddcore", 	BITSINDEX(0, 0), 6},	/* DCDC_CORE_NOR */
+	{"vddcore_ds", 	BITSINDEX(1, 0), 6},	/* DCDC_CORE_SLP */
+	{"vddarm", 		BITSINDEX(1, 6), 7},	/* DCDC_ARM_A */
+	{"vddarm_b", 	BITSINDEX(2, 5), 7},	/* DCDC_ARM_B */
+	{"vddmem", 		BITSINDEX(3, 6), 7},	/* DCDC_MEM */
+	{"vddgen", 		BITSINDEX(4, 5), 7},	/* DCDC_GEN */
+	{"vddrf", 		BITSINDEX(5, 4), 7},
+	{"vddcon", 		BITSINDEX(13, 1), 7},	/* DCDC_CON?DCDC_WPA? */
+
+	//LDO (20)
+	{"vdd25", 		BITSINDEX(18, 2), 6},	/* AVDD28? *//* FIXME: be care LDO_VDD2V5_OPT 0 : 1.8v, 1 : 2.8V */
+	{"vddkpled", 	BITSINDEX(19, 0), 6},
+	{"vddvibr", 	BITSINDEX(19, 6), 6},
+	{"vddwifipa", 	BITSINDEX(20, 4), 6},
+	{"vddcammot", 	BITSINDEX(21, 2), 6},
+	{"vddemmccore", BITSINDEX(22, 0), 6},
+	{"vdddcxo", 	BITSINDEX(22, 6), 6},
+	{"vddsdcore", 	BITSINDEX(23, 4), 6},
+	{"vdd28", 		BITSINDEX(24, 2), 6},
+	{"vddcama", 	BITSINDEX(25, 0), 6},
+	{"vddsim0", 	BITSINDEX(25, 6), 6},
+	{"vddsim1", 	BITSINDEX(25, 6), 6},	/* share with vddsim0 */
+	{"vddsim2", 	BITSINDEX(25, 6), 6},	/* share with vddsim0 */
+	{"vddsdio", 	BITSINDEX(26, 4), 6},
+	{"vddusb", 		BITSINDEX(27, 2), 6},
+	{"vddcamio", 	BITSINDEX(28, 0), 6},
+	{"vdd18", 		BITSINDEX(28, 0), 6},	/* share with vddcamio */
+	{"vddcamd", 	BITSINDEX(28, 6), 6},
+	{"vddrf0", 		BITSINDEX(29, 4), 6},
+	{"vddgen1", 	BITSINDEX(30, 2), 6},
+	{"vddgen0", 	BITSINDEX(31, 0), 6},
+	{0},
+};
+
+int sci_otp_get_offset(const char *name)
+{
+	const struct otp_bitmap *map = otp_bitmap;
+	int offset = 0;
+	for (; map->name; map++) {
+		if (0 == strcmp(map->name, name)) {
+			offset -= (int)(BIT(map->bits_len) / 2);	/* middle */
+			offset +=
+			    (int)__adie_efuse_read_bits(map->bits_idx,
+							map->bits_len);
+		}
+	}
+	if ((0 == strcmp(name, "vddcore"))
+	    || (0 == strcmp(name, "vddarm"))) {
+		int bb_chip = (int)__adie_efuse_read_bits(BITSINDEX(31, 6), 2);
+		pr_debug("%s bb_chip magic %d\n", name, bb_chip);
+		offset += -32 + 32 * bb_chip;
+	}
+	pr_debug("%s offset %d (steps)\n", name, offset);
+	return offset;
+}