d4b8d51580
As usual, this patches were taken (and rebased) from https://github.com/raspberrypi/linux/commits/rpi-4.1.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 47922
88 lines
2.6 KiB
Diff
88 lines
2.6 KiB
Diff
From 63757aefe3befc1044ba041042bf7eca6e52df8b Mon Sep 17 00:00:00 2001
|
|
From: Florian Meier <florian.meier@koalo.de>
|
|
Date: Fri, 22 Nov 2013 19:04:54 +0100
|
|
Subject: [PATCH 036/222] BCM2708: Add I2S support to board file
|
|
|
|
Adds the required initializations for I2S
|
|
to the board file of mach-bcm2708.
|
|
|
|
Signed-off-by: Florian Meier <florian.meier@koalo.de>
|
|
|
|
bcm2708-i2s: Enable MMAP support via a DT property and overlay
|
|
|
|
The i2s driver used to claim to support MMAP, but that feature was disabled
|
|
when some problems were found. Add the ability to enable this feature
|
|
through Device Tree, using the i2s-mmap overlay.
|
|
|
|
See: #1004
|
|
---
|
|
arch/arm/mach-bcm2708/bcm2708.c | 26 ++++++++++++++++++++++++++
|
|
sound/soc/bcm/bcm2708-i2s.c | 7 ++++++-
|
|
2 files changed, 32 insertions(+), 1 deletion(-)
|
|
|
|
--- a/arch/arm/mach-bcm2708/bcm2708.c
|
|
+++ b/arch/arm/mach-bcm2708/bcm2708.c
|
|
@@ -616,6 +616,28 @@ static struct platform_device bcm2835_th
|
|
.name = "bcm2835_thermal",
|
|
};
|
|
|
|
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
|
|
+static struct resource bcm2708_i2s_resources[] = {
|
|
+ {
|
|
+ .start = I2S_BASE,
|
|
+ .end = I2S_BASE + 0x20,
|
|
+ .flags = IORESOURCE_MEM,
|
|
+ },
|
|
+ {
|
|
+ .start = PCM_CLOCK_BASE,
|
|
+ .end = PCM_CLOCK_BASE + 0x02,
|
|
+ .flags = IORESOURCE_MEM,
|
|
+ }
|
|
+};
|
|
+
|
|
+static struct platform_device bcm2708_i2s_device = {
|
|
+ .name = "bcm2708-i2s",
|
|
+ .id = 0,
|
|
+ .num_resources = ARRAY_SIZE(bcm2708_i2s_resources),
|
|
+ .resource = bcm2708_i2s_resources,
|
|
+};
|
|
+#endif
|
|
+
|
|
int __init bcm_register_device(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
@@ -780,6 +802,10 @@ void __init bcm2708_init(void)
|
|
|
|
bcm_register_device_dt(&bcm2835_thermal_device);
|
|
|
|
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
|
|
+ bcm_register_device_dt(&bcm2708_i2s_device);
|
|
+#endif
|
|
+
|
|
if (!use_dt) {
|
|
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
|
|
struct amba_device *d = amba_devs[i];
|
|
--- a/sound/soc/bcm/bcm2708-i2s.c
|
|
+++ b/sound/soc/bcm/bcm2708-i2s.c
|
|
@@ -874,7 +874,7 @@ static const struct snd_soc_component_dr
|
|
.name = "bcm2708-i2s-comp",
|
|
};
|
|
|
|
-static const struct snd_pcm_hardware bcm2708_pcm_hardware = {
|
|
+static struct snd_pcm_hardware bcm2708_pcm_hardware = {
|
|
.info = SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_JOINT_DUPLEX,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE |
|
|
@@ -902,6 +902,11 @@ static int bcm2708_i2s_probe(struct plat
|
|
struct regmap *regmap[2];
|
|
struct resource *mem[2];
|
|
|
|
+ if (of_property_read_bool(pdev->dev.of_node, "brcm,enable-mmap"))
|
|
+ bcm2708_pcm_hardware.info |=
|
|
+ SNDRV_PCM_INFO_MMAP |
|
|
+ SNDRV_PCM_INFO_MMAP_VALID;
|
|
+
|
|
/* Request both ioareas */
|
|
for (i = 0; i <= 1; i++) {
|
|
void __iomem *base;
|