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-rw-r--r--sound/soc/codecs/Kconfig6
-rw-r--r--sound/soc/codecs/Makefile2
-rw-r--r--sound/soc/codecs/adau1701.c2
-rw-r--r--sound/soc/codecs/sigmadsp.c154
-rw-r--r--sound/soc/codecs/sigmadsp.h55
5 files changed, 217 insertions, 2 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 686f45a07f34..593174c78d7b 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -141,7 +141,7 @@ config SND_SOC_AD73311
tristate
config SND_SOC_ADAU1701
- select SIGMA
+ select SND_SOC_SIGMADSP
tristate
config SND_SOC_ADAU1373
@@ -234,6 +234,10 @@ config SND_SOC_RT5631
config SND_SOC_SGTL5000
tristate
+config SND_SOC_SIGMADSP
+ tristate
+ select CRC32
+
config SND_SOC_SN95031
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 62b01e4e7983..fa15006fcac5 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -33,6 +33,7 @@ snd-soc-rt5631-objs := rt5631.o
snd-soc-sgtl5000-objs := sgtl5000.o
snd-soc-alc5623-objs := alc5623.o
snd-soc-alc5632-objs := alc5632.o
+snd-soc-sigmadsp-objs := sigmadsp.o
snd-soc-sn95031-objs := sn95031.o
snd-soc-spdif-objs := spdif_transciever.o
snd-soc-ssm2602-objs := ssm2602.o
@@ -134,6 +135,7 @@ obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o
obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
+obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o
obj-$(CONFIG_SND_SOC_SN95031) +=snd-soc-sn95031.o
obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif.o
obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c
index 8b7e1c50d6e9..6a6af567f02a 100644
--- a/sound/soc/codecs/adau1701.c
+++ b/sound/soc/codecs/adau1701.c
@@ -12,13 +12,13 @@
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
-#include <linux/sigma.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
+#include "sigmadsp.h"
#include "adau1701.h"
#define ADAU1701_DSPCTRL 0x1c
diff --git a/sound/soc/codecs/sigmadsp.c b/sound/soc/codecs/sigmadsp.c
new file mode 100644
index 000000000000..acb97a9834aa
--- /dev/null
+++ b/sound/soc/codecs/sigmadsp.c
@@ -0,0 +1,154 @@
+/*
+ * Load Analog Devices SigmaStudio firmware files
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include "sigmadsp.h"
+
+static size_t sigma_action_size(struct sigma_action *sa)
+{
+ size_t payload = 0;
+
+ switch (sa->instr) {
+ case SIGMA_ACTION_WRITEXBYTES:
+ case SIGMA_ACTION_WRITESINGLE:
+ case SIGMA_ACTION_WRITESAFELOAD:
+ payload = sigma_action_len(sa);
+ break;
+ default:
+ break;
+ }
+
+ payload = ALIGN(payload, 2);
+
+ return payload + sizeof(struct sigma_action);
+}
+
+/*
+ * Returns a negative error value in case of an error, 0 if processing of
+ * the firmware should be stopped after this action, 1 otherwise.
+ */
+static int
+process_sigma_action(struct i2c_client *client, struct sigma_action *sa)
+{
+ size_t len = sigma_action_len(sa);
+ int ret;
+
+ pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__,
+ sa->instr, sa->addr, len);
+
+ switch (sa->instr) {
+ case SIGMA_ACTION_WRITEXBYTES:
+ case SIGMA_ACTION_WRITESINGLE:
+ case SIGMA_ACTION_WRITESAFELOAD:
+ ret = i2c_master_send(client, (void *)&sa->addr, len);
+ if (ret < 0)
+ return -EINVAL;
+ break;
+ case SIGMA_ACTION_DELAY:
+ udelay(len);
+ len = 0;
+ break;
+ case SIGMA_ACTION_END:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+static int
+process_sigma_actions(struct i2c_client *client, struct sigma_firmware *ssfw)
+{
+ struct sigma_action *sa;
+ size_t size;
+ int ret;
+
+ while (ssfw->pos + sizeof(*sa) <= ssfw->fw->size) {
+ sa = (struct sigma_action *)(ssfw->fw->data + ssfw->pos);
+
+ size = sigma_action_size(sa);
+ ssfw->pos += size;
+ if (ssfw->pos > ssfw->fw->size || size == 0)
+ break;
+
+ ret = process_sigma_action(client, sa);
+
+ pr_debug("%s: action returned %i\n", __func__, ret);
+
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (ssfw->pos != ssfw->fw->size)
+ return -EINVAL;
+
+ return 0;
+}
+
+int process_sigma_firmware(struct i2c_client *client, const char *name)
+{
+ int ret;
+ struct sigma_firmware_header *ssfw_head;
+ struct sigma_firmware ssfw;
+ const struct firmware *fw;
+ u32 crc;
+
+ pr_debug("%s: loading firmware %s\n", __func__, name);
+
+ /* first load the blob */
+ ret = request_firmware(&fw, name, &client->dev);
+ if (ret) {
+ pr_debug("%s: request_firmware() failed with %i\n", __func__, ret);
+ return ret;
+ }
+ ssfw.fw = fw;
+
+ /* then verify the header */
+ ret = -EINVAL;
+
+ /*
+ * Reject too small or unreasonable large files. The upper limit has been
+ * chosen a bit arbitrarily, but it should be enough for all practical
+ * purposes and having the limit makes it easier to avoid integer
+ * overflows later in the loading process.
+ */
+ if (fw->size < sizeof(*ssfw_head) || fw->size >= 0x4000000)
+ goto done;
+
+ ssfw_head = (void *)fw->data;
+ if (memcmp(ssfw_head->magic, SIGMA_MAGIC, ARRAY_SIZE(ssfw_head->magic)))
+ goto done;
+
+ crc = crc32(0, fw->data + sizeof(*ssfw_head),
+ fw->size - sizeof(*ssfw_head));
+ pr_debug("%s: crc=%x\n", __func__, crc);
+ if (crc != le32_to_cpu(ssfw_head->crc))
+ goto done;
+
+ ssfw.pos = sizeof(*ssfw_head);
+
+ /* finally process all of the actions */
+ ret = process_sigma_actions(client, &ssfw);
+
+ done:
+ release_firmware(fw);
+
+ pr_debug("%s: loaded %s\n", __func__, name);
+
+ return ret;
+}
+EXPORT_SYMBOL(process_sigma_firmware);
+
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/sigmadsp.h b/sound/soc/codecs/sigmadsp.h
new file mode 100644
index 000000000000..d0de882c0d96
--- /dev/null
+++ b/sound/soc/codecs/sigmadsp.h
@@ -0,0 +1,55 @@
+/*
+ * Load firmware files from Analog Devices SigmaStudio
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SIGMA_FIRMWARE_H__
+#define __SIGMA_FIRMWARE_H__
+
+#include <linux/firmware.h>
+#include <linux/types.h>
+
+struct i2c_client;
+
+#define SIGMA_MAGIC "ADISIGM"
+
+struct sigma_firmware {
+ const struct firmware *fw;
+ size_t pos;
+};
+
+struct sigma_firmware_header {
+ unsigned char magic[7];
+ u8 version;
+ __le32 crc;
+};
+
+enum {
+ SIGMA_ACTION_WRITEXBYTES = 0,
+ SIGMA_ACTION_WRITESINGLE,
+ SIGMA_ACTION_WRITESAFELOAD,
+ SIGMA_ACTION_DELAY,
+ SIGMA_ACTION_PLLWAIT,
+ SIGMA_ACTION_NOOP,
+ SIGMA_ACTION_END,
+};
+
+struct sigma_action {
+ u8 instr;
+ u8 len_hi;
+ __le16 len;
+ __be16 addr;
+ unsigned char payload[];
+};
+
+static inline u32 sigma_action_len(struct sigma_action *sa)
+{
+ return (sa->len_hi << 16) | le16_to_cpu(sa->len);
+}
+
+extern int process_sigma_firmware(struct i2c_client *client, const char *name);
+
+#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-19 16:14:30 +0300