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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-s3c/simtec-audio.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-s3c/simtec-audio.c')
-rw-r--r--arch/arm/mach-s3c/simtec-audio.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/simtec-audio.c b/arch/arm/mach-s3c/simtec-audio.c
new file mode 100644
index 000000000..487485bcc
--- /dev/null
+++ b/arch/arm/mach-s3c/simtec-audio.c
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2009 Simtec Electronics
+// http://armlinux.simtec.co.uk/
+// Ben Dooks <ben@simtec.co.uk>
+//
+// Audio setup for various Simtec S3C24XX implementations
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/io.h>
+
+#include "regs-gpio.h"
+#include "gpio-samsung.h"
+#include "gpio-cfg.h"
+
+#include <linux/platform_data/asoc-s3c24xx_simtec.h>
+#include "devs.h"
+
+#include "bast.h"
+#include "simtec.h"
+
+/* platform ops for audio */
+
+static void simtec_audio_startup_lrroute(void)
+{
+ unsigned int tmp;
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ tmp = __raw_readb(BAST_VA_CTRL1);
+ tmp &= ~BAST_CPLD_CTRL1_LRMASK;
+ tmp |= BAST_CPLD_CTRL1_LRCDAC;
+ __raw_writeb(tmp, BAST_VA_CTRL1);
+
+ local_irq_restore(flags);
+}
+
+static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
+static char our_name[32];
+
+static struct platform_device simtec_audio_dev = {
+ .name = our_name,
+ .id = -1,
+ .dev = {
+ .parent = &s3c_device_iis.dev,
+ .platform_data = &simtec_audio_platdata,
+ },
+};
+
+int __init simtec_audio_add(const char *name, bool has_lr_routing,
+ struct s3c24xx_audio_simtec_pdata *spd)
+{
+ if (!name)
+ name = "tlv320aic23";
+
+ snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
+
+ /* copy platform data so the source can be __initdata */
+ if (spd)
+ simtec_audio_platdata = *spd;
+
+ if (has_lr_routing)
+ simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
+
+ /* Configure the I2S pins (GPE0...GPE4) in correct mode */
+ s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
+ S3C_GPIO_PULL_NONE);
+
+ platform_device_register(&s3c_device_iis);
+ platform_device_register(&simtec_audio_dev);
+ return 0;
+}