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-rw-r--r--sound/soc/codecs/l3.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/sound/soc/codecs/l3.c b/sound/soc/codecs/l3.c
deleted file mode 100644
index b84f6f1f6800..000000000000
--- a/sound/soc/codecs/l3.c
+++ /dev/null
@@ -1,132 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * L3 code
- *
- * Copyright (C) 2008, Christian Pellegrin <chripell@evolware.org>
- *
- * based on:
- *
- * L3 bus algorithm module.
- *
- * Copyright (C) 2001 Russell King, All Rights Reserved.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/gpio.h>
-
-#include <sound/l3.h>
-
-/*
- * Send one byte of data to the chip. Data is latched into the chip on
- * the rising edge of the clock.
- */
-static void sendbyte(struct l3_pins *adap, unsigned int byte)
-{
- int i;
-
- for (i = 0; i < 8; i++) {
- adap->setclk(adap, 0);
- udelay(adap->data_hold);
- adap->setdat(adap, byte & 1);
- udelay(adap->data_setup);
- adap->setclk(adap, 1);
- udelay(adap->clock_high);
- byte >>= 1;
- }
-}
-
-/*
- * Send a set of bytes to the chip. We need to pulse the MODE line
- * between each byte, but never at the start nor at the end of the
- * transfer.
- */
-static void sendbytes(struct l3_pins *adap, const u8 *buf,
- int len)
-{
- int i;
-
- for (i = 0; i < len; i++) {
- if (i) {
- udelay(adap->mode_hold);
- adap->setmode(adap, 0);
- udelay(adap->mode);
- }
- adap->setmode(adap, 1);
- udelay(adap->mode_setup);
- sendbyte(adap, buf[i]);
- }
-}
-
-int l3_write(struct l3_pins *adap, u8 addr, u8 *data, int len)
-{
- adap->setclk(adap, 1);
- adap->setdat(adap, 1);
- adap->setmode(adap, 1);
- udelay(adap->mode);
-
- adap->setmode(adap, 0);
- udelay(adap->mode_setup);
- sendbyte(adap, addr);
- udelay(adap->mode_hold);
-
- sendbytes(adap, data, len);
-
- adap->setclk(adap, 1);
- adap->setdat(adap, 1);
- adap->setmode(adap, 0);
-
- return len;
-}
-EXPORT_SYMBOL_GPL(l3_write);
-
-
-static void l3_set_clk(struct l3_pins *adap, int val)
-{
- gpio_set_value(adap->gpio_clk, val);
-}
-
-static void l3_set_data(struct l3_pins *adap, int val)
-{
- gpio_set_value(adap->gpio_data, val);
-}
-
-static void l3_set_mode(struct l3_pins *adap, int val)
-{
- gpio_set_value(adap->gpio_mode, val);
-}
-
-int l3_set_gpio_ops(struct device *dev, struct l3_pins *adap)
-{
- int ret;
-
- if (!adap->use_gpios)
- return -EINVAL;
-
- ret = devm_gpio_request_one(dev, adap->gpio_data,
- GPIOF_OUT_INIT_LOW, "l3_data");
- if (ret < 0)
- return ret;
- adap->setdat = l3_set_data;
-
- ret = devm_gpio_request_one(dev, adap->gpio_clk,
- GPIOF_OUT_INIT_LOW, "l3_clk");
- if (ret < 0)
- return ret;
- adap->setclk = l3_set_clk;
-
- ret = devm_gpio_request_one(dev, adap->gpio_mode,
- GPIOF_OUT_INIT_LOW, "l3_mode");
- if (ret < 0)
- return ret;
- adap->setmode = l3_set_mode;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(l3_set_gpio_ops);
-
-MODULE_DESCRIPTION("L3 bit-banging driver");
-MODULE_AUTHOR("Christian Pellegrin <chripell@evolware.org>");
-MODULE_LICENSE("GPL");