ASoC: wm2200: Initial DSP support
Support download and execution of firmwares to the DSPs on the WM2200. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
Родитель
09d5d5880e
Коммит
e10f871190
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@ -15,6 +15,7 @@
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/firmware.h>
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#include <linux/gcd.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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@ -32,6 +33,39 @@
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#include <sound/wm2200.h>
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#include "wm2200.h"
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#include "wmfw.h"
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#define WM2200_DSP_CONTROL_1 0x00
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#define WM2200_DSP_CONTROL_2 0x02
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#define WM2200_DSP_CONTROL_3 0x03
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#define WM2200_DSP_CONTROL_4 0x04
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#define WM2200_DSP_CONTROL_5 0x06
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#define WM2200_DSP_CONTROL_6 0x07
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#define WM2200_DSP_CONTROL_7 0x08
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#define WM2200_DSP_CONTROL_8 0x09
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#define WM2200_DSP_CONTROL_9 0x0A
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#define WM2200_DSP_CONTROL_10 0x0B
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#define WM2200_DSP_CONTROL_11 0x0C
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#define WM2200_DSP_CONTROL_12 0x0D
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#define WM2200_DSP_CONTROL_13 0x0F
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#define WM2200_DSP_CONTROL_14 0x10
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#define WM2200_DSP_CONTROL_15 0x11
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#define WM2200_DSP_CONTROL_16 0x12
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#define WM2200_DSP_CONTROL_17 0x13
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#define WM2200_DSP_CONTROL_18 0x14
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#define WM2200_DSP_CONTROL_19 0x16
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#define WM2200_DSP_CONTROL_20 0x17
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#define WM2200_DSP_CONTROL_21 0x18
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#define WM2200_DSP_CONTROL_22 0x1A
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#define WM2200_DSP_CONTROL_23 0x1B
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#define WM2200_DSP_CONTROL_24 0x1C
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#define WM2200_DSP_CONTROL_25 0x1E
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#define WM2200_DSP_CONTROL_26 0x20
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#define WM2200_DSP_CONTROL_27 0x21
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#define WM2200_DSP_CONTROL_28 0x22
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#define WM2200_DSP_CONTROL_29 0x23
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#define WM2200_DSP_CONTROL_30 0x24
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#define WM2200_DSP_CONTROL_31 0x26
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/* The code assumes DCVDD is generated internally */
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#define WM2200_NUM_CORE_SUPPLIES 2
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@ -953,6 +987,206 @@ static int wm2200_reset(struct wm2200_priv *wm2200)
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}
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}
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static int wm2200_dsp_load(struct snd_soc_codec *codec, int base)
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{
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const struct firmware *firmware;
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struct regmap *regmap = codec->control_data;
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unsigned int pos = 0;
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const struct wmfw_header *header;
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const struct wmfw_adsp1_sizes *adsp1_sizes;
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const struct wmfw_footer *footer;
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const struct wmfw_region *region;
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const char *file, *region_name;
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char *text;
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unsigned int dm, pm, zm, reg;
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int regions = 0;
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int ret, offset, type;
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switch (base) {
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case WM2200_DSP1_CONTROL_1:
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file = "wm2200-dsp1.wmfw";
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dm = WM2200_DSP1_DM_BASE;
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pm = WM2200_DSP1_PM_BASE;
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zm = WM2200_DSP1_ZM_BASE;
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break;
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case WM2200_DSP2_CONTROL_1:
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file = "wm2200-dsp2.wmfw";
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dm = WM2200_DSP2_DM_BASE;
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pm = WM2200_DSP2_PM_BASE;
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zm = WM2200_DSP2_ZM_BASE;
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break;
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default:
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dev_err(codec->dev, "BASE %x\n", base);
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BUG_ON(1);
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return -EINVAL;
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}
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ret = request_firmware(&firmware, file, codec->dev);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to request '%s'\n", file);
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return ret;
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}
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pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);
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if (pos >= firmware->size) {
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dev_err(codec->dev, "%s: file too short, %d bytes\n",
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file, firmware->size);
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return -EINVAL;
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}
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header = (void*)&firmware->data[0];
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if (memcmp(&header->magic[0], "WMFW", 4) != 0) {
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dev_err(codec->dev, "%s: invalid magic\n", file);
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return -EINVAL;
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}
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if (header->ver != 0) {
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dev_err(codec->dev, "%s: unknown file format %d\n",
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file, header->ver);
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return -EINVAL;
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}
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if (le32_to_cpu(header->len) != sizeof(*header) +
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sizeof(*adsp1_sizes) + sizeof(*footer)) {
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dev_err(codec->dev, "%s: unexpected header length %d\n",
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file, le32_to_cpu(header->len));
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return -EINVAL;
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}
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if (header->core != WMFW_ADSP1) {
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dev_err(codec->dev, "%s: invalid core %d\n",
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file, header->core);
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return -EINVAL;
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}
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adsp1_sizes = (void *)&(header[1]);
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footer = (void *)&(adsp1_sizes[1]);
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dev_dbg(codec->dev, "%s: %d DM, %d PM, %d ZM\n",
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file, le32_to_cpu(adsp1_sizes->dm),
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le32_to_cpu(adsp1_sizes->pm), le32_to_cpu(adsp1_sizes->zm));
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dev_dbg(codec->dev, "%s: timestamp %llu\n", file,
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le64_to_cpu(footer->timestamp));
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while (pos < firmware->size &&
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pos - firmware->size > sizeof(*region)) {
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region = (void *)&(firmware->data[pos]);
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region_name = "Unknown";
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reg = 0;
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text = NULL;
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offset = le32_to_cpu(region->offset) & 0xffffff;
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type = be32_to_cpu(region->type) & 0xff;
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switch (type) {
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case WMFW_NAME_TEXT:
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region_name = "Firmware name";
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text = kzalloc(le32_to_cpu(region->len) + 1,
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GFP_KERNEL);
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break;
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case WMFW_INFO_TEXT:
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region_name = "Information";
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text = kzalloc(le32_to_cpu(region->len) + 1,
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GFP_KERNEL);
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break;
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case WMFW_ABSOLUTE:
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region_name = "Absolute";
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reg = offset;
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break;
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case WMFW_ADSP1_PM:
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region_name = "PM";
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reg = pm + (offset * 3);
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break;
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case WMFW_ADSP1_DM:
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region_name = "DM";
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reg = dm + (offset * 2);
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break;
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case WMFW_ADSP1_ZM:
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region_name = "ZM";
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reg = zm + (offset * 2);
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break;
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default:
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dev_warn(codec->dev,
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"%s.%d: Unknown region type %x at %d(%x)\n",
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file, regions, type, pos, pos);
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break;
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}
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dev_dbg(codec->dev, "%s.%d: %d bytes at %d in %s\n", file,
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regions, le32_to_cpu(region->len), offset,
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region_name);
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if (text) {
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memcpy(text, region->data, le32_to_cpu(region->len));
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dev_info(codec->dev, "%s: %s\n", file, text);
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kfree(text);
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}
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if (reg) {
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ret = regmap_raw_write(regmap, reg, region->data,
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le32_to_cpu(region->len));
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if (ret != 0) {
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dev_err(codec->dev,
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"%s.%d: Failed to write %d bytes at %d in %s: %d\n",
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file, regions,
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le32_to_cpu(region->len), offset,
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region_name, ret);
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goto out;
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}
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}
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pos += le32_to_cpu(region->len) + sizeof(*region);
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regions++;
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}
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if (pos > firmware->size)
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dev_warn(codec->dev, "%s.%d: %d bytes at end of file\n",
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file, regions, pos - firmware->size);
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out:
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release_firmware(firmware);
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return ret;
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}
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static int wm2200_dsp_ev(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol,
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int event)
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{
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struct snd_soc_codec *codec = w->codec;
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int base = w->reg - WM2200_DSP_CONTROL_30;
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int ret;
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switch (event) {
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case SND_SOC_DAPM_POST_PMU:
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ret = wm2200_dsp_load(codec, base);
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if (ret != 0)
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return ret;
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/* Start the core running */
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snd_soc_update_bits(codec, w->reg,
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WM2200_DSP1_CORE_ENA | WM2200_DSP1_START,
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WM2200_DSP1_CORE_ENA | WM2200_DSP1_START);
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break;
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case SND_SOC_DAPM_PRE_PMD:
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/* Halt the core */
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snd_soc_update_bits(codec, w->reg,
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WM2200_DSP1_CORE_ENA | WM2200_DSP1_START,
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0);
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snd_soc_update_bits(codec, base + WM2200_DSP_CONTROL_19,
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WM2200_DSP1_WDMA_BUFFER_LENGTH_MASK, 0);
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break;
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default:
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break;
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}
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return 0;
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}
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static DECLARE_TLV_DB_SCALE(in_tlv, -6300, 100, 0);
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static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0);
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static DECLARE_TLV_DB_SCALE(out_tlv, -6400, 100, 0);
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@ -1301,9 +1535,11 @@ SND_SOC_DAPM_PGA("LHPF2", WM2200_HPLPF2_1, WM2200_LHPF2_ENA_SHIFT, 0,
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NULL, 0),
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SND_SOC_DAPM_PGA_E("DSP1", WM2200_DSP1_CONTROL_30, WM2200_DSP1_SYS_ENA_SHIFT,
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0, NULL, 0, NULL, 0),
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0, NULL, 0, wm2200_dsp_ev,
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
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SND_SOC_DAPM_PGA_E("DSP2", WM2200_DSP2_CONTROL_30, WM2200_DSP2_SYS_ENA_SHIFT,
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0, NULL, 0, NULL, 0),
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0, NULL, 0, wm2200_dsp_ev,
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
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SND_SOC_DAPM_AIF_OUT("AIF1TX1", "Capture", 0,
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WM2200_AUDIO_IF_1_22, WM2200_AIF1TX1_ENA_SHIFT, 0),
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@ -0,0 +1,56 @@
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/*
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* wmfw.h - Wolfson firmware format information
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*
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* Copyright 2012 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __WMFW_H
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#define __WMFW_H
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#include <linux/types.h>
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struct wmfw_header {
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char magic[4];
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__le32 len;
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__le16 rev;
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u8 core;
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u8 ver;
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} __packed;
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struct wmfw_footer {
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__le64 timestamp;
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__le32 checksum;
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} __packed;
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struct wmfw_adsp1_sizes {
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__le32 dm;
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__le32 pm;
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__le32 zm;
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} __packed;
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struct wmfw_region {
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union {
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__be32 type;
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__le32 offset;
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};
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__le32 len;
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u8 data[];
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} __packed;
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#define WMFW_ADSP1 1
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#define WMFW_ABSOLUTE 0xf0
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#define WMFW_NAME_TEXT 0xfe
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#define WMFW_INFO_TEXT 0xff
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#define WMFW_ADSP1_PM 2
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#define WMFW_ADSP1_DM 3
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#define WMFW_ADSP1_ZM 4
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#endif
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