1 files changed, 0 insertions, 152 deletions
diff --git a/driver/mp2964.c b/driver/mp2964.c
deleted file mode 100644
index 21a23a8f4c..0000000000
--- a/driver/mp2964.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* Copyright 2021 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* Driver for tuning the MP2964 IMVP8 - IMVP9.1 parameters */
-
-#include "console.h"
-#include "i2c.h"
-#include "mp2964.h"
-#include "timer.h"
-#include "util.h"
-
-#define MP2964_STARTUP_WAIT_US		(50 * MSEC)
-#define MP2964_STORE_WAIT_US		(300 * MSEC)
-#define MP2964_RESTORE_WAIT_US		(2 * MSEC)
-
-enum reg_page {
-	REG_PAGE_0,
-	REG_PAGE_1,
-	REG_PAGE_COUNT
-};
-
-static int mp2964_write8(uint8_t reg, uint8_t value)
-{
-	const uint8_t tx[2] = { reg, value };
-
-	return i2c_xfer_unlocked(I2C_PORT_MP2964, I2C_ADDR_MP2964_FLAGS,
-				 tx, sizeof(tx), NULL, 0, I2C_XFER_SINGLE);
-}
-
-static void mp2964_read16(uint8_t reg, uint16_t *value)
-{
-	const uint8_t tx[1] = { reg };
-	uint8_t rx[2];
-
-	i2c_xfer_unlocked(I2C_PORT_MP2964, I2C_ADDR_MP2964_FLAGS,
-			  tx, sizeof(tx), rx, sizeof(rx), I2C_XFER_SINGLE);
-	*value = (rx[1] << 8) | rx[0];
-}
-
-static void mp2964_write16(uint8_t reg, uint16_t value)
-{
-	const uint8_t tx[3] = { reg, value & 0xff, value >> 8 };
-
-	i2c_xfer_unlocked(I2C_PORT_MP2964, I2C_ADDR_MP2964_FLAGS,
-			  tx, sizeof(tx), NULL, 0, I2C_XFER_SINGLE);
-}
-
-static int mp2964_select_page(enum reg_page page)
-{
-	int status;
-
-	if (page >= REG_PAGE_COUNT)
-		return EC_ERROR_INVAL;
-
-	status = mp2964_write8(MP2964_PAGE, page);
-	if (status != EC_SUCCESS) {
-		ccprintf("%s: could not select page 0x%02x, error %d\n",
-			 __func__, page, status);
-	}
-	return status;
-}
-
-static void mp2964_write_vec16(const struct mp2964_reg_val *init_list,
-			       int count, int *delta)
-{
-	const struct mp2964_reg_val *reg_val;
-	uint16_t outval;
-	int i;
-
-	reg_val = init_list;
-	for (i = 0; i < count; ++i, ++reg_val) {
-		mp2964_read16(reg_val->reg, &outval);
-		if (outval == reg_val->val) {
-			ccprintf("mp2964: reg 0x%02x already 0x%04x\n",
-				 reg_val->reg, outval);
-			continue;
-		}
-		ccprintf("mp2964: tuning reg 0x%02x from 0x%04x to 0x%04x\n",
-			 reg_val->reg, outval, reg_val->val);
-		mp2964_write16(reg_val->reg, reg_val->val);
-		*delta += 1;
-	}
-}
-
-static int mp2964_store_user_all(void)
-{
-	const uint8_t wr = MP2964_STORE_USER_ALL;
-	const uint8_t rd = MP2964_RESTORE_USER_ALL;
-	int status;
-
-	ccprintf("%s: updating persistent settings\n", __func__);
-
-	status = i2c_xfer_unlocked(I2C_PORT_MP2964, I2C_ADDR_MP2964_FLAGS,
-				   &wr, sizeof(wr), NULL, 0, I2C_XFER_SINGLE);
-	if (status != EC_SUCCESS)
-		return status;
-
-	usleep(MP2964_STORE_WAIT_US);
-
-	status = i2c_xfer_unlocked(I2C_PORT_MP2964, I2C_ADDR_MP2964_FLAGS,
-				   &rd, sizeof(rd), NULL, 0, I2C_XFER_SINGLE);
-	if (status != EC_SUCCESS)
-		return status;
-
-	usleep(MP2964_RESTORE_WAIT_US);
-
-	return EC_SUCCESS;
-}
-
-static void mp2964_patch_rail(enum reg_page page,
-			      const struct mp2964_reg_val *page_vals,
-			      int count,
-			      int *delta)
-{
-	if (mp2964_select_page(page) != EC_SUCCESS)
-		return;
-	mp2964_write_vec16(page_vals, count, delta);
-}
-
-int mp2964_tune(const struct mp2964_reg_val *rail_a, int count_a,
-		const struct mp2964_reg_val *rail_b, int count_b)
-{
-	int tries = 2;
-	int delta;
-
-	udelay(MP2964_STARTUP_WAIT_US);
-
-	i2c_lock(I2C_PORT_MP2964, 1);
-
-	do {
-		int status;
-
-		delta = 0;
-		mp2964_patch_rail(REG_PAGE_0, rail_a, count_a, &delta);
-		mp2964_patch_rail(REG_PAGE_1, rail_b, count_b, &delta);
-		if (delta == 0)
-			break;
-
-		status = mp2964_store_user_all();
-		if (status != EC_SUCCESS)
-			ccprintf("%s: STORE_USER_ALL failed\n", __func__);
-	} while (--tries > 0);
-
-	i2c_lock(I2C_PORT_MP2964, 0);
-
-	if (delta)
-		return EC_ERROR_UNKNOWN;
-	else
-		return EC_SUCCESS;
-}