Support download and execution of firmwares to the DSPs on the WM2200.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/wm2200.c | 240 ++++++++++++++++++++++++++++++++++++++++++++- sound/soc/codecs/wmfw.h | 56 +++++++++++ 2 files changed, 294 insertions(+), 2 deletions(-) create mode 100644 sound/soc/codecs/wmfw.h
diff --git a/sound/soc/codecs/wm2200.c b/sound/soc/codecs/wm2200.c index f24ef0a..e3f549b 100644 --- a/sound/soc/codecs/wm2200.c +++ b/sound/soc/codecs/wm2200.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> +#include <linux/firmware.h> #include <linux/gcd.h> #include <linux/gpio.h> #include <linux/i2c.h> @@ -32,6 +33,39 @@ #include <sound/wm2200.h>
#include "wm2200.h" +#include "wmfw.h" + +#define WM2200_DSP_CONTROL_1 0x00 +#define WM2200_DSP_CONTROL_2 0x02 +#define WM2200_DSP_CONTROL_3 0x03 +#define WM2200_DSP_CONTROL_4 0x04 +#define WM2200_DSP_CONTROL_5 0x06 +#define WM2200_DSP_CONTROL_6 0x07 +#define WM2200_DSP_CONTROL_7 0x08 +#define WM2200_DSP_CONTROL_8 0x09 +#define WM2200_DSP_CONTROL_9 0x0A +#define WM2200_DSP_CONTROL_10 0x0B +#define WM2200_DSP_CONTROL_11 0x0C +#define WM2200_DSP_CONTROL_12 0x0D +#define WM2200_DSP_CONTROL_13 0x0F +#define WM2200_DSP_CONTROL_14 0x10 +#define WM2200_DSP_CONTROL_15 0x11 +#define WM2200_DSP_CONTROL_16 0x12 +#define WM2200_DSP_CONTROL_17 0x13 +#define WM2200_DSP_CONTROL_18 0x14 +#define WM2200_DSP_CONTROL_19 0x16 +#define WM2200_DSP_CONTROL_20 0x17 +#define WM2200_DSP_CONTROL_21 0x18 +#define WM2200_DSP_CONTROL_22 0x1A +#define WM2200_DSP_CONTROL_23 0x1B +#define WM2200_DSP_CONTROL_24 0x1C +#define WM2200_DSP_CONTROL_25 0x1E +#define WM2200_DSP_CONTROL_26 0x20 +#define WM2200_DSP_CONTROL_27 0x21 +#define WM2200_DSP_CONTROL_28 0x22 +#define WM2200_DSP_CONTROL_29 0x23 +#define WM2200_DSP_CONTROL_30 0x24 +#define WM2200_DSP_CONTROL_31 0x26
/* The code assumes DCVDD is generated internally */ #define WM2200_NUM_CORE_SUPPLIES 2 @@ -953,6 +987,206 @@ static int wm2200_reset(struct wm2200_priv *wm2200) } }
+static int wm2200_dsp_load(struct snd_soc_codec *codec, int base) +{ + const struct firmware *firmware; + struct regmap *regmap = codec->control_data; + unsigned int pos = 0; + const struct wmfw_header *header; + const struct wmfw_adsp1_sizes *adsp1_sizes; + const struct wmfw_footer *footer; + const struct wmfw_region *region; + const char *file, *region_name; + char *text; + unsigned int dm, pm, zm, reg; + int regions = 0; + int ret, offset, type; + + switch (base) { + case WM2200_DSP1_CONTROL_1: + file = "wm2200-dsp1.wmfw"; + dm = WM2200_DSP1_DM_BASE; + pm = WM2200_DSP1_PM_BASE; + zm = WM2200_DSP1_ZM_BASE; + break; + case WM2200_DSP2_CONTROL_1: + file = "wm2200-dsp2.wmfw"; + dm = WM2200_DSP2_DM_BASE; + pm = WM2200_DSP2_PM_BASE; + zm = WM2200_DSP2_ZM_BASE; + break; + default: + dev_err(codec->dev, "BASE %x\n", base); + BUG_ON(1); + return -EINVAL; + } + + ret = request_firmware(&firmware, file, codec->dev); + if (ret != 0) { + dev_err(codec->dev, "Failed to request '%s'\n", file); + return ret; + } + + pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer); + if (pos >= firmware->size) { + dev_err(codec->dev, "%s: file too short, %d bytes\n", + file, firmware->size); + return -EINVAL; + } + + header = (void*)&firmware->data[0]; + + if (memcmp(&header->magic[0], "WMFW", 4) != 0) { + dev_err(codec->dev, "%s: invalid magic\n", file); + return -EINVAL; + } + + if (header->ver != 0) { + dev_err(codec->dev, "%s: unknown file format %d\n", + file, header->ver); + return -EINVAL; + } + + if (le32_to_cpu(header->len) != sizeof(*header) + + sizeof(*adsp1_sizes) + sizeof(*footer)) { + dev_err(codec->dev, "%s: unexpected header length %d\n", + file, le32_to_cpu(header->len)); + return -EINVAL; + } + + if (header->core != WMFW_ADSP1) { + dev_err(codec->dev, "%s: invalid core %d\n", + file, header->core); + return -EINVAL; + } + + adsp1_sizes = (void *)&(header[1]); + footer = (void *)&(adsp1_sizes[1]); + + dev_dbg(codec->dev, "%s: %d DM, %d PM, %d ZM\n", + file, le32_to_cpu(adsp1_sizes->dm), + le32_to_cpu(adsp1_sizes->pm), le32_to_cpu(adsp1_sizes->zm)); + + dev_dbg(codec->dev, "%s: timestamp %llu\n", file, + le64_to_cpu(footer->timestamp)); + + while (pos < firmware->size && + pos - firmware->size > sizeof(*region)) { + region = (void *)&(firmware->data[pos]); + region_name = "Unknown"; + reg = 0; + text = NULL; + offset = le32_to_cpu(region->offset) & 0xffffff; + type = be32_to_cpu(region->type) & 0xff; + + switch (type) { + case WMFW_NAME_TEXT: + region_name = "Firmware name"; + text = kzalloc(le32_to_cpu(region->len) + 1, + GFP_KERNEL); + break; + case WMFW_INFO_TEXT: + region_name = "Information"; + text = kzalloc(le32_to_cpu(region->len) + 1, + GFP_KERNEL); + break; + case WMFW_ABSOLUTE: + region_name = "Absolute"; + reg = offset; + break; + case WMFW_ADSP1_PM: + region_name = "PM"; + reg = pm + (offset * 3); + break; + case WMFW_ADSP1_DM: + region_name = "DM"; + reg = dm + (offset * 2); + break; + case WMFW_ADSP1_ZM: + region_name = "ZM"; + reg = zm + (offset * 2); + break; + default: + dev_warn(codec->dev, + "%s.%d: Unknown region type %x at %d(%x)\n", + file, regions, type, pos, pos); + break; + } + + dev_dbg(codec->dev, "%s.%d: %d bytes at %d in %s\n", file, + regions, le32_to_cpu(region->len), offset, + region_name); + + if (text) { + memcpy(text, region->data, le32_to_cpu(region->len)); + dev_info(codec->dev, "%s: %s\n", file, text); + kfree(text); + } + + if (reg) { + ret = regmap_raw_write(regmap, reg, region->data, + le32_to_cpu(region->len)); + if (ret != 0) { + dev_err(codec->dev, + "%s.%d: Failed to write %d bytes at %d in %s: %d\n", + file, regions, + le32_to_cpu(region->len), offset, + region_name, ret); + goto out; + } + } + + pos += le32_to_cpu(region->len) + sizeof(*region); + regions++; + } + + if (pos > firmware->size) + dev_warn(codec->dev, "%s.%d: %d bytes at end of file\n", + file, regions, pos - firmware->size); + +out: + release_firmware(firmware); + + return ret; +} + +static int wm2200_dsp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event) +{ + struct snd_soc_codec *codec = w->codec; + int base = w->reg - WM2200_DSP_CONTROL_30; + int ret; + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + ret = wm2200_dsp_load(codec, base); + if (ret != 0) + return ret; + + /* Start the core running */ + snd_soc_update_bits(codec, w->reg, + WM2200_DSP1_CORE_ENA | WM2200_DSP1_START, + WM2200_DSP1_CORE_ENA | WM2200_DSP1_START); + break; + + case SND_SOC_DAPM_PRE_PMD: + /* Halt the core */ + snd_soc_update_bits(codec, w->reg, + WM2200_DSP1_CORE_ENA | WM2200_DSP1_START, + 0); + + snd_soc_update_bits(codec, base + WM2200_DSP_CONTROL_19, + WM2200_DSP1_WDMA_BUFFER_LENGTH_MASK, 0); + break; + + default: + break; + } + + return 0; +} + static DECLARE_TLV_DB_SCALE(in_tlv, -6300, 100, 0); static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0); static DECLARE_TLV_DB_SCALE(out_tlv, -6400, 100, 0); @@ -1301,9 +1535,11 @@ SND_SOC_DAPM_PGA("LHPF2", WM2200_HPLPF2_1, WM2200_LHPF2_ENA_SHIFT, 0, NULL, 0),
SND_SOC_DAPM_PGA_E("DSP1", WM2200_DSP1_CONTROL_30, WM2200_DSP1_SYS_ENA_SHIFT, - 0, NULL, 0, NULL, 0), + 0, NULL, 0, wm2200_dsp_ev, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_PGA_E("DSP2", WM2200_DSP2_CONTROL_30, WM2200_DSP2_SYS_ENA_SHIFT, - 0, NULL, 0, NULL, 0), + 0, NULL, 0, wm2200_dsp_ev, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_AIF_OUT("AIF1TX1", "Capture", 0, WM2200_AUDIO_IF_1_22, WM2200_AIF1TX1_ENA_SHIFT, 0), diff --git a/sound/soc/codecs/wmfw.h b/sound/soc/codecs/wmfw.h new file mode 100644 index 0000000..ef37316 --- /dev/null +++ b/sound/soc/codecs/wmfw.h @@ -0,0 +1,56 @@ +/* + * wmfw.h - Wolfson firmware format information + * + * Copyright 2012 Wolfson Microelectronics plc + * + * Author: Mark Brown broonie@opensource.wolfsonmicro.com + * + * 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 __WMFW_H +#define __WMFW_H + +#include <linux/types.h> + +struct wmfw_header { + char magic[4]; + __le32 len; + __le16 rev; + u8 core; + u8 ver; +} __packed; + +struct wmfw_footer { + __le64 timestamp; + __le32 checksum; +} __packed; + +struct wmfw_adsp1_sizes { + __le32 dm; + __le32 pm; + __le32 zm; +} __packed; + +struct wmfw_region { + union { + __be32 type; + __le32 offset; + }; + __le32 len; + u8 data[]; +} __packed; + +#define WMFW_ADSP1 1 + +#define WMFW_ABSOLUTE 0xf0 +#define WMFW_NAME_TEXT 0xfe +#define WMFW_INFO_TEXT 0xff + +#define WMFW_ADSP1_PM 2 +#define WMFW_ADSP1_DM 3 +#define WMFW_ADSP1_ZM 4 + +#endif