Dear Rajeshwari Shinde,
On 14/12/12 20:56, Rajeshwari Shinde wrote:
This patch adds FDT support to the codec.
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Simon Glass sjg@chromium.org
Changes in V1: -Rebased on latest u-boot-samsung drivers/sound/wm8994.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++- drivers/sound/wm8994.h | 6 +-- 2 files changed, 76 insertions(+), 6 deletions(-)
diff --git a/drivers/sound/wm8994.c b/drivers/sound/wm8994.c index 293903a..a528502 100644 --- a/drivers/sound/wm8994.c +++ b/drivers/sound/wm8994.c @@ -26,9 +26,11 @@ #include <asm/io.h> #include <common.h> #include <div64.h> +#include <fdtdec.h> #include <i2c.h> #include <i2s.h> #include <sound.h> +#include <asm/arch/sound.h> #include "wm8994.h" #include "wm8994_registers.h"
@@ -77,6 +79,7 @@ static int bclk_divs[] = {
static struct wm8994_priv g_wm8994_info; static unsigned char g_wm8994_i2c_dev_addr; +static struct sound_codec_info g_codec_info;
/*
- Initialise I2C for wm 8994
@@ -747,13 +750,82 @@ err: return -1; }
+/*
- Gets fdt values for wm8994 config parameters
- @param pcodec_info codec information structure
- @param blob FDT blob
- @return int value, 0 for success
- */
+static int get_codec_values(struct sound_codec_info *pcodec_info,
const void *blob)+{
- int error = 0;
+#ifdef CONFIG_OF_CONTROL
- enum fdt_compat_id compat;
- int node;
- int parent;
- /* Get the node from FDT for codec */
- node = fdtdec_next_compatible(blob, 0, COMPAT_WOLFSON_WM8994_CODEC);
- if (node <= 0) {
debug("EXYNOS_SOUND: No node for codec in device tree\n");debug("node = %d\n", node);return -1;- }
- parent = fdt_parent_offset(blob, node);
- if (parent < 0) {
debug("%s: Cannot find node parent\n", __func__);return -1;- }
- compat = fdtdec_lookup(blob, parent);
- switch (compat) {
- case COMPAT_SAMSUNG_S3C2440_I2C:
pcodec_info->i2c_bus = i2c_get_bus_num_fdt(parent);error |= pcodec_info->i2c_bus;debug("i2c bus = %d\n", pcodec_info->i2c_bus);pcodec_info->i2c_dev_addr = fdtdec_get_int(blob, node,"reg", 0);error |= pcodec_info->i2c_dev_addr;debug("i2c dev addr = %d\n", pcodec_info->i2c_dev_addr);break;- default:
debug("%s: Unknown compat id %d\n", __func__, compat);return -1;- }
+#else
- pcodec_info->i2c_bus = AUDIO_I2C_BUS;
- pcodec_info->i2c_dev_addr = AUDIO_I2C_REG;
- debug("i2c dev addr = %d\n", pcodec_info->i2c_dev_addr);
+#endif
- pcodec_info->codec_type = CODEC_WM_8994;
- if (error == -1) {
debug("fail to get wm8994 codec node properties\n");return -1;- }
- return 0;
please remove this blank line.
+}
please remove this blank line.
/*wm8994 Device Initialisation */ -int wm8994_init(struct sound_codec_info *pcodec_info,
enum en_audio_interface aif_id,+int wm8994_init(const void *blob, enum en_audio_interface aif_id, int sampling_rate, int mclk_freq, int bits_per_sample, unsigned int channels) { int ret = 0;
struct sound_codec_info *pcodec_info = &g_codec_info;
/* Get the codec Values */
if (get_codec_values(pcodec_info, blob) < 0) {
debug("FDT Codec values failed\n");return -1;}
/* shift the device address by 1 for 7 bit addressing */ g_wm8994_i2c_dev_addr = pcodec_info->i2c_dev_addr;
diff --git a/drivers/sound/wm8994.h b/drivers/sound/wm8994.h index a8f0de1..a1e8335 100644 --- a/drivers/sound/wm8994.h +++ b/drivers/sound/wm8994.h @@ -69,8 +69,7 @@ enum wm8994_type { /*
- intialise wm8994 sound codec device for the given configuration
- @param pcodec_info pointer value of the sound codec info structure
parsed from device tree
- @param blob FDT node for codec values
- @param aif_id enum value of codec interface port in which
soc i2s is connected- @param sampling_rate Sampling rate ranges between from 8khz to 96khz
@@ -80,8 +79,7 @@ enum wm8994_type {
- @returns -1 for error and 0 Success.
*/ -int wm8994_init(struct sound_codec_info *pcodec_info,
enum en_audio_interface aif_id,+int wm8994_init(const void *blob, enum en_audio_interface aif_id, int sampling_rate, int mclk_freq, int bits_per_sample, unsigned int channels); #endif /*__WM8994_H__ */
-- Thanks, Minkyu Kang.