summaryrefslogtreecommitdiff
path: root/arch/arm/mach-mxs
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r--arch/arm/mach-mxs/clock-mx28.c38
-rw-r--r--arch/arm/mach-mxs/devices-mx28.h3
-rw-r--r--arch/arm/mach-mxs/devices/platform-mxs-saif.c5
-rw-r--r--arch/arm/mach-mxs/include/mach/common.h1
-rw-r--r--arch/arm/mach-mxs/include/mach/devices-common.h4
-rw-r--r--arch/arm/mach-mxs/include/mach/digctl.h21
-rw-r--r--arch/arm/mach-mxs/mach-mx28evk.c18
7 files changed, 84 insertions, 6 deletions
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c
index da6e4aad177c..df0ad3ce234b 100644
--- a/arch/arm/mach-mxs/clock-mx28.c
+++ b/arch/arm/mach-mxs/clock-mx28.c
@@ -22,6 +22,7 @@
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/clkdev.h>
+#include <linux/spinlock.h>
#include <asm/clkdev.h>
#include <asm/div64.h>
@@ -29,6 +30,7 @@
#include <mach/mx28.h>
#include <mach/common.h>
#include <mach/clock.h>
+#include <mach/digctl.h>
#include "regs-clkctrl-mx28.h"
@@ -43,6 +45,33 @@ static struct clk emi_clk;
static struct clk saif0_clk;
static struct clk saif1_clk;
static struct clk clk32k_clk;
+static DEFINE_SPINLOCK(clkmux_lock);
+
+/*
+ * HW_SAIF_CLKMUX_SEL:
+ * DIRECT(0x0): SAIF0 clock pins selected for SAIF0 input clocks, and SAIF1
+ * clock pins selected for SAIF1 input clocks.
+ * CROSSINPUT(0x1): SAIF1 clock inputs selected for SAIF0 input clocks, and
+ * SAIF0 clock inputs selected for SAIF1 input clocks.
+ * EXTMSTR0(0x2): SAIF0 clock pin selected for both SAIF0 and SAIF1 input
+ * clocks.
+ * EXTMSTR1(0x3): SAIF1 clock pin selected for both SAIF0 and SAIF1 input
+ * clocks.
+ */
+int mxs_saif_clkmux_select(unsigned int clkmux)
+{
+ if (clkmux > 0x3)
+ return -EINVAL;
+
+ spin_lock(&clkmux_lock);
+ __raw_writel(BM_DIGCTL_CTRL_SAIF_CLKMUX,
+ DIGCTRL_BASE_ADDR + HW_DIGCTL_CTRL + MXS_CLR_ADDR);
+ __raw_writel(clkmux << BP_DIGCTL_CTRL_SAIF_CLKMUX,
+ DIGCTRL_BASE_ADDR + HW_DIGCTL_CTRL + MXS_SET_ADDR);
+ spin_unlock(&clkmux_lock);
+
+ return 0;
+}
static int _raw_clk_enable(struct clk *clk)
{
@@ -785,6 +814,15 @@ int __init mx28_clocks_init(void)
clk_set_parent(&saif0_clk, &pll0_clk);
clk_set_parent(&saif1_clk, &pll0_clk);
+ /*
+ * Set an initial clock rate for the saif internal logic to work
+ * properly. This is important when working in EXTMASTER mode that
+ * uses the other saif's BITCLK&LRCLK but it still needs a basic
+ * clock which should be fast enough for the internal logic.
+ */
+ clk_set_rate(&saif0_clk, 24000000);
+ clk_set_rate(&saif1_clk, 24000000);
+
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
mxs_timer_init(&clk32k_clk, MX28_INT_TIMER0);
diff --git a/arch/arm/mach-mxs/devices-mx28.h b/arch/arm/mach-mxs/devices-mx28.h
index c8887103f0e3..4f50094e293d 100644
--- a/arch/arm/mach-mxs/devices-mx28.h
+++ b/arch/arm/mach-mxs/devices-mx28.h
@@ -47,6 +47,7 @@ struct platform_device *__init mx28_add_mxsfb(
const struct mxsfb_platform_data *pdata);
extern const struct mxs_saif_data mx28_saif_data[] __initconst;
-#define mx28_add_saif(id) mxs_add_saif(&mx28_saif_data[id])
+#define mx28_add_saif(id, pdata) \
+ mxs_add_saif(&mx28_saif_data[id], pdata)
struct platform_device *__init mx28_add_rtc_stmp3xxx(void);
diff --git a/arch/arm/mach-mxs/devices/platform-mxs-saif.c b/arch/arm/mach-mxs/devices/platform-mxs-saif.c
index 1ec965e9fe92..f6e3a60b4201 100644
--- a/arch/arm/mach-mxs/devices/platform-mxs-saif.c
+++ b/arch/arm/mach-mxs/devices/platform-mxs-saif.c
@@ -32,7 +32,8 @@ const struct mxs_saif_data mx28_saif_data[] __initconst = {
};
#endif
-struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data)
+struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data,
+ const struct mxs_saif_platform_data *pdata)
{
struct resource res[] = {
{
@@ -56,5 +57,5 @@ struct platform_device *__init mxs_add_saif(const struct mxs_saif_data *data)
};
return mxs_add_platform_device("mxs-saif", data->id, res,
- ARRAY_SIZE(res), NULL, 0);
+ ARRAY_SIZE(res), pdata, sizeof(*pdata));
}
diff --git a/arch/arm/mach-mxs/include/mach/common.h b/arch/arm/mach-mxs/include/mach/common.h
index 1388485414c9..e1237ab25862 100644
--- a/arch/arm/mach-mxs/include/mach/common.h
+++ b/arch/arm/mach-mxs/include/mach/common.h
@@ -17,6 +17,7 @@ extern const u32 *mxs_get_ocotp(void);
extern int mxs_reset_block(void __iomem *);
extern void mxs_timer_init(struct clk *, int);
extern void mxs_restart(char, const char *);
+extern int mxs_saif_clkmux_select(unsigned int clkmux);
extern int mx23_register_gpios(void);
extern int mx23_clocks_init(void);
diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h
index a8080f44c03d..dc369c1239fc 100644
--- a/arch/arm/mach-mxs/include/mach/devices-common.h
+++ b/arch/arm/mach-mxs/include/mach/devices-common.h
@@ -94,6 +94,7 @@ struct platform_device *__init mxs_add_mxs_pwm(
resource_size_t iobase, int id);
/* saif */
+#include <sound/saif.h>
struct mxs_saif_data {
int id;
resource_size_t iobase;
@@ -103,4 +104,5 @@ struct mxs_saif_data {
};
struct platform_device *__init mxs_add_saif(
- const struct mxs_saif_data *data);
+ const struct mxs_saif_data *data,
+ const struct mxs_saif_platform_data *pdata);
diff --git a/arch/arm/mach-mxs/include/mach/digctl.h b/arch/arm/mach-mxs/include/mach/digctl.h
new file mode 100644
index 000000000000..49a888c65d6d
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/digctl.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MACH_DIGCTL_H__
+#define __MACH_DIGCTL_H__
+
+/* MXS DIGCTL SAIF CLKMUX */
+#define MXS_DIGCTL_SAIF_CLKMUX_DIRECT 0x0
+#define MXS_DIGCTL_SAIF_CLKMUX_CROSSINPUT 0x1
+#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0 0x2
+#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR1 0x3
+
+#define HW_DIGCTL_CTRL 0x0
+#define BP_DIGCTL_CTRL_SAIF_CLKMUX 10
+#define BM_DIGCTL_CTRL_SAIF_CLKMUX (0x3 << 10)
+#endif
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index d0cc37fd23a4..eb0597be4e23 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -27,6 +27,7 @@
#include <mach/common.h>
#include <mach/iomux-mx28.h>
+#include <mach/digctl.h>
#include "devices-mx28.h"
@@ -421,6 +422,18 @@ static struct gpio mx28evk_lcd_gpios[] = {
{ MX28EVK_BL_ENABLE, GPIOF_OUT_INIT_HIGH, "bl-enable" },
};
+static const struct mxs_saif_platform_data
+ mx28evk_mxs_saif_pdata[] __initconst = {
+ /* working on EXTMSTR0 mode (saif0 master, saif1 slave) */
+ {
+ .master_mode = 1,
+ .master_id = 0,
+ }, {
+ .master_mode = 0,
+ .master_id = 0,
+ },
+};
+
static void __init mx28evk_init(void)
{
int ret;
@@ -454,8 +467,9 @@ static void __init mx28evk_init(void)
else
mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
- mx28_add_saif(0);
- mx28_add_saif(1);
+ mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
+ mx28_add_saif(0, &mx28evk_mxs_saif_pdata[0]);
+ mx28_add_saif(1, &mx28evk_mxs_saif_pdata[1]);
mx28_add_mxs_i2c(0);
i2c_register_board_info(0, mxs_i2c0_board_info,
generated by cgit (git 2.34.1) at 2024-07-01 05:53:35 +0000