cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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simtec-audio.c (1759B)

      1// SPDX-License-Identifier: GPL-2.0
      2//
      3// Copyright (c) 2009 Simtec Electronics
      4//	http://armlinux.simtec.co.uk/
      5//	Ben Dooks <ben@simtec.co.uk>
      6//
      7// Audio setup for various Simtec S3C24XX implementations
      8
      9#include <linux/kernel.h>
     10#include <linux/interrupt.h>
     11#include <linux/init.h>
     12#include <linux/device.h>
     13#include <linux/io.h>
     14
     15#include "regs-gpio.h"
     16#include "gpio-samsung.h"
     17#include "gpio-cfg.h"
     18
     19#include <linux/platform_data/asoc-s3c24xx_simtec.h>
     20#include "devs.h"
     21
     22#include "bast.h"
     23#include "simtec.h"
     24
     25/* platform ops for audio */
     26
     27static void simtec_audio_startup_lrroute(void)
     28{
     29	unsigned int tmp;
     30	unsigned long flags;
     31
     32	local_irq_save(flags);
     33
     34	tmp = __raw_readb(BAST_VA_CTRL1);
     35	tmp &= ~BAST_CPLD_CTRL1_LRMASK;
     36	tmp |= BAST_CPLD_CTRL1_LRCDAC;
     37	__raw_writeb(tmp, BAST_VA_CTRL1);
     38
     39	local_irq_restore(flags);
     40}
     41
     42static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
     43static char our_name[32];
     44
     45static struct platform_device simtec_audio_dev = {
     46	.name	= our_name,
     47	.id	= -1,
     48	.dev	= {
     49		.parent		= &s3c_device_iis.dev,
     50		.platform_data	= &simtec_audio_platdata,
     51	},
     52};
     53
     54int __init simtec_audio_add(const char *name, bool has_lr_routing,
     55			    struct s3c24xx_audio_simtec_pdata *spd)
     56{
     57	if (!name)
     58		name = "tlv320aic23";
     59
     60	snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
     61
     62	/* copy platform data so the source can be __initdata */
     63	if (spd)
     64		simtec_audio_platdata = *spd;
     65
     66	if (has_lr_routing)
     67		simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
     68
     69	/* Configure the I2S pins (GPE0...GPE4) in correct mode */
     70	s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
     71			      S3C_GPIO_PULL_NONE);
     72
     73	platform_device_register(&s3c_device_iis);
     74	platform_device_register(&simtec_audio_dev);
     75	return 0;
     76}