This patch adds driver for audio codec WM8994
Signed-off-by: R. Chandrasekar rcse...@samsung.com
Signed-off-by: Rajeshwari Shinde rajeshwar...@samsung.com
---
Changes in V2:
- None
Changes in V3:
- Incorporated comments from Simon Glass.
drivers/sound/Makefile |1 +
drivers/sound/wm8994.c | 792 ++
drivers/sound/wm8994.h | 87 +
drivers/sound/wm8994_registers.h | 299 ++
4 files changed, 1179 insertions(+), 0 deletions(-)
create mode 100644 drivers/sound/wm8994.c
create mode 100644 drivers/sound/wm8994.h
create mode 100644 drivers/sound/wm8994_registers.h
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile
index 18ad2c9..8fdffb1 100644
--- a/drivers/sound/Makefile
+++ b/drivers/sound/Makefile
@@ -27,6 +27,7 @@ LIB := $(obj)libsound.o
COBJS-$(CONFIG_SOUND) += sound.o
COBJS-$(CONFIG_I2S)+= samsung-i2s.o
+COBJS-$(CONFIG_SOUND_WM8994) += wm8994.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/sound/wm8994.c b/drivers/sound/wm8994.c
new file mode 100644
index 000..293903a
--- /dev/null
+++ b/drivers/sound/wm8994.c
@@ -0,0 +1,792 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * R. Chandrasekar rcse...@samsung.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include asm/arch/clk.h
+#include asm/arch/cpu.h
+#include asm/gpio.h
+#include asm/io.h
+#include common.h
+#include div64.h
+#include i2c.h
+#include i2s.h
+#include sound.h
+#include wm8994.h
+#include wm8994_registers.h
+
+/* defines for wm8994 system clock selection */
+#define SEL_MCLK1 0x00
+#define SEL_MCLK2 0x08
+#define SEL_FLL1 0x10
+#define SEL_FLL2 0x18
+
+/* fll config to configure fll */
+struct wm8994_fll_config {
+ int src;/* Source */
+ int in; /* Input frequency in Hz */
+ int out;/* output frequency in Hz */
+};
+
+/* codec private data */
+struct wm8994_priv {
+ enum wm8994_type type; /* codec type of wolfson */
+ int revision; /* Revision */
+ int sysclk[WM8994_MAX_AIF]; /* System clock frequency in Hz */
+ int mclk[WM8994_MAX_AIF]; /* master clock frequency in Hz */
+ int aifclk[WM8994_MAX_AIF]; /* audio interface clock in Hz */
+ struct wm8994_fll_config fll[2]; /* fll config to configure fll */
+};
+
+/* wm 8994 supported sampling rate values */
+static unsigned int src_rate[] = {
+8000, 11025, 12000, 16000, 22050, 24000,
+32000, 44100, 48000, 88200, 96000
+};
+
+/* op clock divisions */
+static int opclk_divs[] = { 10, 20, 30, 40, 55, 60, 80, 120, 160 };
+
+/* lr clock frame size ratio */
+static int fs_ratios[] = {
+ 64, 128, 192, 256, 348, 512, 768, 1024, 1408, 1536
+};
+
+/* bit clock divisors */
+static int bclk_divs[] = {
+ 10, 15, 20, 30, 40, 50, 60, 80, 110, 120, 160, 220, 240, 320, 440, 480,
+ 640, 880, 960, 1280, 1760, 1920
+};
+
+static struct wm8994_priv g_wm8994_info;
+static unsigned char g_wm8994_i2c_dev_addr;
+
+/*
+ * Initialise I2C for wm 8994
+ *
+ * @param bus no i2c bus number in which wm8994 is connected
+ */
+static void wm8994_i2c_init(int bus_no)
+{
+ i2c_set_bus_num(bus_no);
+}
+
+/*
+ * Writes value to a device register through i2c
+ *
+ * @param reg reg number to be write
+ * @param data data to be writen to the above registor
+ *
+ * @return int value 1 for change, 0 for no change or negative error code.
+ */
+static int wm8994_i2c_write(unsigned int reg, unsigned short data)
+{
+ unsigned char val[2];
+
+ val[0] = (unsigned char)((data 8) 0xff);
+ val[1] = (unsigned char)(data 0xff);
+ debug(Write Addr : 0x%04X, Data : 0x%04X\n, reg, data);
+
+ return i2c_write(g_wm8994_i2c_dev_addr, reg, 2, val, 2);
+}
+
+/*
+ * Read a value from a device register through i2c
+ *
+ * @param reg reg number to be read
+ * @param data address of read data to be stored
+ *
+ * @return int value 0 for success, -1 in case of error.
+ */
+static unsigned int wm8994_i2c_read(unsigned int reg , unsigned short *data)
+{
+ unsigned char val[2];
+ int
