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-rw-r--r--sound/soc/codecs/src4xxx.c518
1 files changed, 518 insertions, 0 deletions
diff --git a/sound/soc/codecs/src4xxx.c b/sound/soc/codecs/src4xxx.c
new file mode 100644
index 000000000..db4e280dd
--- /dev/null
+++ b/sound/soc/codecs/src4xxx.c
@@ -0,0 +1,518 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// TI SRC4xxx Audio Codec driver
+//
+// Copyright 2021-2022 Deqx Pty Ltd
+// Author: Matt Flax <flatmax@flatmax.com>
+
+#include <linux/module.h>
+
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "src4xxx.h"
+
+struct src4xxx {
+ struct regmap *regmap;
+ bool master[2];
+ int mclk_hz;
+ struct device *dev;
+};
+
+enum {SRC4XXX_PORTA, SRC4XXX_PORTB};
+
+/* SRC attenuation */
+static const DECLARE_TLV_DB_SCALE(src_tlv, -12750, 50, 0);
+
+static const struct snd_kcontrol_new src4xxx_controls[] = {
+ SOC_DOUBLE_R_TLV("SRC Volume",
+ SRC4XXX_SCR_CTL_30, SRC4XXX_SCR_CTL_31, 0, 255, 1, src_tlv),
+};
+
+/* I2S port control */
+static const char * const port_out_src_text[] = {
+ "loopback", "other_port", "DIR", "SRC"
+};
+static SOC_ENUM_SINGLE_DECL(porta_out_src_enum, SRC4XXX_PORTA_CTL_03, 4,
+ port_out_src_text);
+static SOC_ENUM_SINGLE_DECL(portb_out_src_enum, SRC4XXX_PORTB_CTL_05, 4,
+ port_out_src_text);
+static const struct snd_kcontrol_new porta_out_control =
+ SOC_DAPM_ENUM("Port A source select", porta_out_src_enum);
+static const struct snd_kcontrol_new portb_out_control =
+ SOC_DAPM_ENUM("Port B source select", portb_out_src_enum);
+
+/* Digital audio transmitter control */
+static const char * const dit_mux_text[] = {"Port A", "Port B", "DIR", "SRC"};
+static SOC_ENUM_SINGLE_DECL(dit_mux_enum, SRC4XXX_TX_CTL_07, 3, dit_mux_text);
+static const struct snd_kcontrol_new dit_mux_control =
+ SOC_DAPM_ENUM("DIT source", dit_mux_enum);
+
+/* SRC control */
+static const char * const src_in_text[] = {"Port A", "Port B", "DIR"};
+static SOC_ENUM_SINGLE_DECL(src_in_enum, SRC4XXX_SCR_CTL_2D, 0, src_in_text);
+static const struct snd_kcontrol_new src_in_control =
+ SOC_DAPM_ENUM("SRC source select", src_in_enum);
+
+/* DIR control */
+static const char * const dir_in_text[] = {"Ch 1", "Ch 2", "Ch 3", "Ch 4"};
+static SOC_ENUM_SINGLE_DECL(dir_in_enum, SRC4XXX_RCV_CTL_0D, 0, dir_in_text);
+static const struct snd_kcontrol_new dir_in_control =
+ SOC_DAPM_ENUM("Digital Input", dir_in_enum);
+
+static const struct snd_soc_dapm_widget src4xxx_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("loopback_A"),
+ SND_SOC_DAPM_INPUT("other_port_A"),
+ SND_SOC_DAPM_INPUT("DIR_A"),
+ SND_SOC_DAPM_INPUT("SRC_A"),
+ SND_SOC_DAPM_MUX("Port A source",
+ SND_SOC_NOPM, 0, 0, &porta_out_control),
+
+ SND_SOC_DAPM_INPUT("loopback_B"),
+ SND_SOC_DAPM_INPUT("other_port_B"),
+ SND_SOC_DAPM_INPUT("DIR_B"),
+ SND_SOC_DAPM_INPUT("SRC_B"),
+ SND_SOC_DAPM_MUX("Port B source",
+ SND_SOC_NOPM, 0, 0, &portb_out_control),
+
+ SND_SOC_DAPM_INPUT("Port_A"),
+ SND_SOC_DAPM_INPUT("Port_B"),
+ SND_SOC_DAPM_INPUT("DIR_"),
+
+ /* Digital audio receivers and transmitters */
+ SND_SOC_DAPM_OUTPUT("DIR_OUT"),
+ SND_SOC_DAPM_OUTPUT("SRC_OUT"),
+ SND_SOC_DAPM_MUX("DIT Out Src", SRC4XXX_PWR_RST_01,
+ SRC4XXX_ENABLE_DIT_SHIFT, 1, &dit_mux_control),
+
+ /* Audio Interface */
+ SND_SOC_DAPM_AIF_IN("AIF_A_RX", "Playback A", 0,
+ SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_A_SHIFT, 1),
+ SND_SOC_DAPM_AIF_OUT("AIF_A_TX", "Capture A", 0,
+ SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_A_SHIFT, 1),
+ SND_SOC_DAPM_AIF_IN("AIF_B_RX", "Playback B", 0,
+ SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_B_SHIFT, 1),
+ SND_SOC_DAPM_AIF_OUT("AIF_B_TX", "Capture B", 0,
+ SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_B_SHIFT, 1),
+
+ SND_SOC_DAPM_MUX("SRC source", SND_SOC_NOPM, 0, 0, &src_in_control),
+
+ SND_SOC_DAPM_INPUT("MCLK"),
+ SND_SOC_DAPM_INPUT("RXMCLKI"),
+ SND_SOC_DAPM_INPUT("RXMCLKO"),
+
+ SND_SOC_DAPM_INPUT("RX1"),
+ SND_SOC_DAPM_INPUT("RX2"),
+ SND_SOC_DAPM_INPUT("RX3"),
+ SND_SOC_DAPM_INPUT("RX4"),
+ SND_SOC_DAPM_MUX("Digital Input", SRC4XXX_PWR_RST_01,
+ SRC4XXX_ENABLE_DIR_SHIFT, 1, &dir_in_control),
+};
+
+static const struct snd_soc_dapm_route src4xxx_audio_routes[] = {
+ /* I2S Input to Output Routing */
+ {"Port A source", "loopback", "loopback_A"},
+ {"Port A source", "other_port", "other_port_A"},
+ {"Port A source", "DIR", "DIR_A"},
+ {"Port A source", "SRC", "SRC_A"},
+ {"Port B source", "loopback", "loopback_B"},
+ {"Port B source", "other_port", "other_port_B"},
+ {"Port B source", "DIR", "DIR_B"},
+ {"Port B source", "SRC", "SRC_B"},
+ /* DIT muxing */
+ {"DIT Out Src", "Port A", "Capture A"},
+ {"DIT Out Src", "Port B", "Capture B"},
+ {"DIT Out Src", "DIR", "DIR_OUT"},
+ {"DIT Out Src", "SRC", "SRC_OUT"},
+
+ /* SRC input selection */
+ {"SRC source", "Port A", "Port_A"},
+ {"SRC source", "Port B", "Port_B"},
+ {"SRC source", "DIR", "DIR_"},
+ /* SRC mclk selection */
+ {"SRC mclk source", "Master (MCLK)", "MCLK"},
+ {"SRC mclk source", "Master (RXCLKI)", "RXMCLKI"},
+ {"SRC mclk source", "Recovered receiver clk", "RXMCLKO"},
+ /* DIR input selection */
+ {"Digital Input", "Ch 1", "RX1"},
+ {"Digital Input", "Ch 2", "RX2"},
+ {"Digital Input", "Ch 3", "RX3"},
+ {"Digital Input", "Ch 4", "RX4"},
+};
+
+
+static const struct snd_soc_component_driver src4xxx_driver = {
+ .controls = src4xxx_controls,
+ .num_controls = ARRAY_SIZE(src4xxx_controls),
+
+ .dapm_widgets = src4xxx_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(src4xxx_dapm_widgets),
+ .dapm_routes = src4xxx_audio_routes,
+ .num_dapm_routes = ARRAY_SIZE(src4xxx_audio_routes),
+};
+
+static int src4xxx_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component);
+ unsigned int ctrl;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ ctrl = SRC4XXX_BUS_MASTER;
+ src4xxx->master[dai->id] = true;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ ctrl = 0;
+ src4xxx->master[dai->id] = false;
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ctrl |= SRC4XXX_BUS_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ctrl |= SRC4XXX_BUS_LEFT_J;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ ctrl |= SRC4XXX_BUS_RIGHT_J_24;
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ regmap_update_bits(src4xxx->regmap, SRC4XXX_BUS_FMT(dai->id),
+ SRC4XXX_BUS_FMT_MS_MASK, ctrl);
+
+ return 0;
+}
+
+static int src4xxx_set_mclk_hz(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component);
+
+ dev_info(component->dev, "changing mclk rate from %d to %d Hz\n",
+ src4xxx->mclk_hz, freq);
+ src4xxx->mclk_hz = freq;
+
+ return 0;
+}
+
+static int src4xxx_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component);
+ unsigned int mclk_div;
+ int val, pj, jd, d;
+ int reg;
+ int ret;
+
+ switch (dai->id) {
+ case SRC4XXX_PORTB:
+ reg = SRC4XXX_PORTB_CTL_06;
+ break;
+ default:
+ reg = SRC4XXX_PORTA_CTL_04;
+ break;
+ }
+
+ if (src4xxx->master[dai->id]) {
+ mclk_div = src4xxx->mclk_hz/params_rate(params);
+ if (src4xxx->mclk_hz != mclk_div*params_rate(params)) {
+ dev_err(component->dev,
+ "mclk %d / rate %d has a remainder.\n",
+ src4xxx->mclk_hz, params_rate(params));
+ return -EINVAL;
+ }
+
+ val = ((int)mclk_div - 128) / 128;
+ if ((val < 0) | (val > 3)) {
+ dev_err(component->dev,
+ "div register setting %d is out of range\n",
+ val);
+ dev_err(component->dev,
+ "unsupported sample rate %d Hz for the master clock of %d Hz\n",
+ params_rate(params), src4xxx->mclk_hz);
+ return -EINVAL;
+ }
+
+ /* set the TX DIV */
+ ret = regmap_update_bits(src4xxx->regmap,
+ SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK,
+ val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
+ if (ret) {
+ dev_err(component->dev,
+ "Couldn't set the TX's div register to %d << %d = 0x%x\n",
+ val, SRC4XXX_TX_MCLK_DIV_SHIFT,
+ val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
+ return ret;
+ }
+
+ /* set the PLL for the digital receiver */
+ switch (src4xxx->mclk_hz) {
+ case 24576000:
+ pj = 0x22;
+ jd = 0x00;
+ d = 0x00;
+ break;
+ case 22579200:
+ pj = 0x22;
+ jd = 0x1b;
+ d = 0xa3;
+ break;
+ default:
+ /* don't error out here,
+ * other parts of the chip are still functional
+ * Dummy initialize variables to avoid
+ * -Wsometimes-uninitialized from clang.
+ */
+ dev_info(component->dev,
+ "Couldn't set the RCV PLL as this master clock rate is unknown. Chosen regmap values may not match real world values.\n");
+ pj = 0x0;
+ jd = 0xff;
+ d = 0xff;
+ break;
+ }
+ ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj);
+ if (ret < 0)
+ dev_err(component->dev,
+ "Failed to update PLL register 0x%x\n",
+ SRC4XXX_RCV_PLL_0F);
+ ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10, jd);
+ if (ret < 0)
+ dev_err(component->dev,
+ "Failed to update PLL register 0x%x\n",
+ SRC4XXX_RCV_PLL_10);
+ ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11, d);
+ if (ret < 0)
+ dev_err(component->dev,
+ "Failed to update PLL register 0x%x\n",
+ SRC4XXX_RCV_PLL_11);
+
+ ret = regmap_update_bits(src4xxx->regmap,
+ SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK,
+ val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
+ if (ret < 0) {
+ dev_err(component->dev,
+ "Couldn't set the TX's div register to %d << %d = 0x%x\n",
+ val, SRC4XXX_TX_MCLK_DIV_SHIFT,
+ val<<SRC4XXX_TX_MCLK_DIV_SHIFT);
+ return ret;
+ }
+
+ return regmap_update_bits(src4xxx->regmap, reg,
+ SRC4XXX_MCLK_DIV_MASK, val);
+ } else {
+ dev_info(dai->dev, "not setting up MCLK as not master\n");
+ }
+
+ return 0;
+};
+
+static const struct snd_soc_dai_ops src4xxx_dai_ops = {
+ .hw_params = src4xxx_hw_params,
+ .set_sysclk = src4xxx_set_mclk_hz,
+ .set_fmt = src4xxx_set_dai_fmt,
+};
+
+#define SRC4XXX_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
+#define SRC4XXX_RATES (SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000|\
+ SNDRV_PCM_RATE_88200|\
+ SNDRV_PCM_RATE_96000|\
+ SNDRV_PCM_RATE_176400|\
+ SNDRV_PCM_RATE_192000)
+
+static struct snd_soc_dai_driver src4xxx_dai_driver[] = {
+ {
+ .id = SRC4XXX_PORTA,
+ .name = "src4xxx-portA",
+ .playback = {
+ .stream_name = "Playback A",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SRC4XXX_RATES,
+ .formats = SRC4XXX_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture A",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SRC4XXX_RATES,
+ .formats = SRC4XXX_FORMATS,
+ },
+ .ops = &src4xxx_dai_ops,
+ },
+ {
+ .id = SRC4XXX_PORTB,
+ .name = "src4xxx-portB",
+ .playback = {
+ .stream_name = "Playback B",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SRC4XXX_RATES,
+ .formats = SRC4XXX_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture B",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SRC4XXX_RATES,
+ .formats = SRC4XXX_FORMATS,
+ },
+ .ops = &src4xxx_dai_ops,
+ },
+};
+
+static const struct reg_default src4xxx_reg_defaults[] = {
+ { SRC4XXX_PWR_RST_01, 0x00 }, /* all powered down intially */
+ { SRC4XXX_PORTA_CTL_03, 0x00 },
+ { SRC4XXX_PORTA_CTL_04, 0x00 },
+ { SRC4XXX_PORTB_CTL_05, 0x00 },
+ { SRC4XXX_PORTB_CTL_06, 0x00 },
+ { SRC4XXX_TX_CTL_07, 0x00 },
+ { SRC4XXX_TX_CTL_08, 0x00 },
+ { SRC4XXX_TX_CTL_09, 0x00 },
+ { SRC4XXX_SRC_DIT_IRQ_MSK_0B, 0x00 },
+ { SRC4XXX_SRC_DIT_IRQ_MODE_0C, 0x00 },
+ { SRC4XXX_RCV_CTL_0D, 0x00 },
+ { SRC4XXX_RCV_CTL_0E, 0x00 },
+ { SRC4XXX_RCV_PLL_0F, 0x00 }, /* not spec. in the datasheet */
+ { SRC4XXX_RCV_PLL_10, 0xff }, /* not spec. in the datasheet */
+ { SRC4XXX_RCV_PLL_11, 0xff }, /* not spec. in the datasheet */
+ { SRC4XXX_RVC_IRQ_MSK_16, 0x00 },
+ { SRC4XXX_RVC_IRQ_MSK_17, 0x00 },
+ { SRC4XXX_RVC_IRQ_MODE_18, 0x00 },
+ { SRC4XXX_RVC_IRQ_MODE_19, 0x00 },
+ { SRC4XXX_RVC_IRQ_MODE_1A, 0x00 },
+ { SRC4XXX_GPIO_1_1B, 0x00 },
+ { SRC4XXX_GPIO_2_1C, 0x00 },
+ { SRC4XXX_GPIO_3_1D, 0x00 },
+ { SRC4XXX_GPIO_4_1E, 0x00 },
+ { SRC4XXX_SCR_CTL_2D, 0x00 },
+ { SRC4XXX_SCR_CTL_2E, 0x00 },
+ { SRC4XXX_SCR_CTL_2F, 0x00 },
+ { SRC4XXX_SCR_CTL_30, 0x00 },
+ { SRC4XXX_SCR_CTL_31, 0x00 },
+};
+
+int src4xxx_probe(struct device *dev, struct regmap *regmap,
+ void (*switch_mode)(struct device *dev))
+{
+ struct src4xxx *src4xxx;
+ int ret;
+
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ src4xxx = devm_kzalloc(dev, sizeof(*src4xxx), GFP_KERNEL);
+ if (!src4xxx)
+ return -ENOMEM;
+
+ src4xxx->regmap = regmap;
+ src4xxx->dev = dev;
+ src4xxx->mclk_hz = 0; /* mclk has not been configured yet */
+ dev_set_drvdata(dev, src4xxx);
+
+ ret = regmap_write(regmap, SRC4XXX_PWR_RST_01, SRC4XXX_RESET);
+ if (ret < 0)
+ dev_err(dev, "Failed to issue reset: %d\n", ret);
+ usleep_range(1, 500); /* sleep for more then 500 ns */
+ ret = regmap_write(regmap, SRC4XXX_PWR_RST_01, SRC4XXX_POWER_DOWN);
+ if (ret < 0)
+ dev_err(dev, "Failed to decommission reset: %d\n", ret);
+ usleep_range(500, 1000); /* sleep for 500 us or more */
+
+ ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_PWR_RST_01,
+ SRC4XXX_POWER_ENABLE, SRC4XXX_POWER_ENABLE);
+ if (ret < 0)
+ dev_err(dev, "Failed to port A and B : %d\n", ret);
+
+ /* set receiver to use master clock (rcv mclk is most likely jittery) */
+ ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_RCV_CTL_0D,
+ SRC4XXX_RXCLK_MCLK, SRC4XXX_RXCLK_MCLK);
+ if (ret < 0)
+ dev_err(dev,
+ "Failed to enable mclk as the PLL1 DIR reference : %d\n", ret);
+
+ /* default to leaving the PLL2 running on loss of lock, divide by 8 */
+ ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_RCV_CTL_0E,
+ SRC4XXX_PLL2_DIV_8 | SRC4XXX_REC_MCLK_EN | SRC4XXX_PLL2_LOL,
+ SRC4XXX_PLL2_DIV_8 | SRC4XXX_REC_MCLK_EN | SRC4XXX_PLL2_LOL);
+ if (ret < 0)
+ dev_err(dev, "Failed to enable mclk rec and div : %d\n", ret);
+
+ ret = devm_snd_soc_register_component(dev, &src4xxx_driver,
+ src4xxx_dai_driver, ARRAY_SIZE(src4xxx_dai_driver));
+ if (ret == 0)
+ dev_info(dev, "src4392 probe ok %d\n", ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(src4xxx_probe);
+
+static bool src4xxx_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case SRC4XXX_RES_00:
+ case SRC4XXX_GLOBAL_ITR_STS_02:
+ case SRC4XXX_SRC_DIT_STS_0A:
+ case SRC4XXX_NON_AUDIO_D_12:
+ case SRC4XXX_RVC_STS_13:
+ case SRC4XXX_RVC_STS_14:
+ case SRC4XXX_RVC_STS_15:
+ case SRC4XXX_SUB_CODE_1F:
+ case SRC4XXX_SUB_CODE_20:
+ case SRC4XXX_SUB_CODE_21:
+ case SRC4XXX_SUB_CODE_22:
+ case SRC4XXX_SUB_CODE_23:
+ case SRC4XXX_SUB_CODE_24:
+ case SRC4XXX_SUB_CODE_25:
+ case SRC4XXX_SUB_CODE_26:
+ case SRC4XXX_SUB_CODE_27:
+ case SRC4XXX_SUB_CODE_28:
+ case SRC4XXX_PC_PREAMBLE_HI_29:
+ case SRC4XXX_PC_PREAMBLE_LO_2A:
+ case SRC4XXX_PD_PREAMBLE_HI_2B:
+ case SRC4XXX_PC_PREAMBLE_LO_2C:
+ case SRC4XXX_IO_RATIO_32:
+ case SRC4XXX_IO_RATIO_33:
+ return true;
+ }
+
+ if (reg > SRC4XXX_IO_RATIO_33 && reg < SRC4XXX_PAGE_SEL_7F)
+ return true;
+
+ return false;
+}
+
+const struct regmap_config src4xxx_regmap_config = {
+ .val_bits = 8,
+ .reg_bits = 8,
+ .max_register = SRC4XXX_IO_RATIO_33,
+
+ .reg_defaults = src4xxx_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(src4xxx_reg_defaults),
+ .volatile_reg = src4xxx_volatile_register,
+ .cache_type = REGCACHE_RBTREE,
+};
+EXPORT_SYMBOL_GPL(src4xxx_regmap_config);
+
+MODULE_DESCRIPTION("ASoC SRC4XXX CODEC driver");
+MODULE_AUTHOR("Matt Flax <flatmax@flatmax.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 06:15:13 +0000