From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/staging/iio/frequency/ad9834.c | 78 ++++++++++++++++++++++++---------------
1 files changed, 48 insertions(+), 30 deletions(-)
diff --git a/kernel/drivers/staging/iio/frequency/ad9834.c b/kernel/drivers/staging/iio/frequency/ad9834.c
index 4c6d404..262c359 100644
--- a/kernel/drivers/staging/iio/frequency/ad9834.c
+++ b/kernel/drivers/staging/iio/frequency/ad9834.c
@@ -1,11 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* AD9833/AD9834/AD9837/AD9838 SPI DDS driver
*
* Copyright 2010-2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
*/
+#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/device.h>
@@ -71,7 +71,7 @@
struct ad9834_state {
struct spi_device *spi;
struct regulator *reg;
- unsigned int mclk;
+ struct clk *mclk;
unsigned short control;
unsigned short devid;
struct spi_transfer xfer;
@@ -110,12 +110,15 @@
static int ad9834_write_frequency(struct ad9834_state *st,
unsigned long addr, unsigned long fout)
{
+ unsigned long clk_freq;
unsigned long regval;
- if (fout > (st->mclk / 2))
+ clk_freq = clk_get_rate(st->mclk);
+
+ if (fout > (clk_freq / 2))
return -EINVAL;
- regval = ad9834_calc_freqreg(st->mclk, fout);
+ regval = ad9834_calc_freqreg(clk_freq, fout);
st->freq_data[0] = cpu_to_be16(addr | (regval &
RES_MASK(AD9834_FREQ_BITS / 2)));
@@ -282,7 +285,7 @@
struct ad9834_state *st = iio_priv(indio_dev);
char *str;
- if ((st->devid == ID_AD9833) || (st->devid == ID_AD9837))
+ if (st->devid == ID_AD9833 || st->devid == ID_AD9837)
str = "sine triangle square";
else if (st->control & AD9834_OPBITEN)
str = "sine";
@@ -389,16 +392,10 @@
static int ad9834_probe(struct spi_device *spi)
{
- struct ad9834_platform_data *pdata = dev_get_platdata(&spi->dev);
struct ad9834_state *st;
struct iio_dev *indio_dev;
struct regulator *reg;
int ret;
-
- if (!pdata) {
- dev_dbg(&spi->dev, "no platform data?\n");
- return -ENODEV;
- }
reg = devm_regulator_get(&spi->dev, "avdd");
if (IS_ERR(reg))
@@ -418,11 +415,21 @@
spi_set_drvdata(spi, indio_dev);
st = iio_priv(indio_dev);
mutex_init(&st->lock);
- st->mclk = pdata->mclk;
+ st->mclk = devm_clk_get(&spi->dev, NULL);
+ if (IS_ERR(st->mclk)) {
+ ret = PTR_ERR(st->mclk);
+ goto error_disable_reg;
+ }
+
+ ret = clk_prepare_enable(st->mclk);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable master clock\n");
+ goto error_disable_reg;
+ }
+
st->spi = spi;
st->devid = spi_get_device_id(spi)->driver_data;
st->reg = reg;
- indio_dev->dev.parent = &spi->dev;
indio_dev->name = spi_get_device_id(spi)->name;
switch (st->devid) {
case ID_AD9833:
@@ -454,42 +461,41 @@
spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
st->control = AD9834_B28 | AD9834_RESET;
+ st->control |= AD9834_DIV2;
- if (!pdata->en_div2)
- st->control |= AD9834_DIV2;
-
- if (!pdata->en_signbit_msb_out && (st->devid == ID_AD9834))
+ if (st->devid == ID_AD9834)
st->control |= AD9834_SIGN_PIB;
st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
ret = spi_sync(st->spi, &st->msg);
if (ret) {
dev_err(&spi->dev, "device init failed\n");
- goto error_disable_reg;
+ goto error_clock_unprepare;
}
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, pdata->freq0);
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, 1000000);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, pdata->freq1);
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, 5000000);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_phase(st, AD9834_REG_PHASE0, pdata->phase0);
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE0, 512);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_phase(st, AD9834_REG_PHASE1, pdata->phase1);
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE1, 1024);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
return 0;
-
+error_clock_unprepare:
+ clk_disable_unprepare(st->mclk);
error_disable_reg:
regulator_disable(reg);
@@ -502,6 +508,7 @@
struct ad9834_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
+ clk_disable_unprepare(st->mclk);
regulator_disable(st->reg);
return 0;
@@ -516,9 +523,20 @@
};
MODULE_DEVICE_TABLE(spi, ad9834_id);
+static const struct of_device_id ad9834_of_match[] = {
+ {.compatible = "adi,ad9833"},
+ {.compatible = "adi,ad9834"},
+ {.compatible = "adi,ad9837"},
+ {.compatible = "adi,ad9838"},
+ {}
+};
+
+MODULE_DEVICE_TABLE(of, ad9834_of_match);
+
static struct spi_driver ad9834_driver = {
.driver = {
.name = "ad9834",
+ .of_match_table = ad9834_of_match
},
.probe = ad9834_probe,
.remove = ad9834_remove,
@@ -526,6 +544,6 @@
};
module_spi_driver(ad9834_driver);
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
MODULE_DESCRIPTION("Analog Devices AD9833/AD9834/AD9837/AD9838 DDS");
MODULE_LICENSE("GPL v2");
--
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