diff options
Diffstat (limited to 'sound/soc/fsl/fsl_sai_sysfs.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai_sysfs.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai_sysfs.c b/sound/soc/fsl/fsl_sai_sysfs.c new file mode 100644 index 000000000000..920ebcccc427 --- /dev/null +++ b/sound/soc/fsl/fsl_sai_sysfs.c @@ -0,0 +1,312 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright 2020 NXP Semiconductors. + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/kdev_t.h> +#include <linux/pm_runtime.h> +#include <linux/mfd/syscon/imx7-iomuxc-gpr.h> + +#include "fsl_sai.h" + +static ssize_t tx_bitcnt_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read bitcounter */ + regmap_read(sai->regmap, FSL_SAI_TBCTN, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(tx_bitcnt); + +static ssize_t tx_timestamp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read timestamp */ + regmap_read(sai->regmap, FSL_SAI_TTCTN, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(tx_timestamp); + +static ssize_t tx_bitcnt_latched_timestamp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read timestamp */ + regmap_read(sai->regmap, FSL_SAI_TTCAP, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(tx_bitcnt_latched_timestamp); + +static ssize_t +tx_timestamp_enable_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_TSEN; + regmap_update_bits(sai->regmap, FSL_SAI_TTCTL, FSL_SAI_xTCTL_TSEN, val); + return n; +} +static DEVICE_ATTR_WO(tx_timestamp_enable); + +static ssize_t +tx_timestamp_increment_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_TSINC; + regmap_update_bits(sai->regmap, FSL_SAI_TTCTL, FSL_SAI_xTCTL_TSINC, val); + return n; +} +static DEVICE_ATTR_WO(tx_timestamp_increment); + +static ssize_t +tx_bitcnt_reset_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_RBC; + regmap_update_bits(sai->regmap, FSL_SAI_TTCTL, FSL_SAI_xTCTL_RBC, val); + return n; +} +static DEVICE_ATTR_WO(tx_bitcnt_reset); + +static ssize_t +tx_timestamp_reset_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_RTSC; + regmap_update_bits(sai->regmap, FSL_SAI_TTCTL, FSL_SAI_xTCTL_RTSC, val); + return n; +} +static DEVICE_ATTR_WO(tx_timestamp_reset); + + +static ssize_t rx_bitcnt_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read bitcounter */ + regmap_read(sai->regmap, FSL_SAI_RBCTN, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(rx_bitcnt); + +static ssize_t rx_timestamp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read timestamp */ + regmap_read(sai->regmap, FSL_SAI_RTCTN, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(rx_timestamp); + +static ssize_t rx_bitcnt_latched_timestamp_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + /* read timestamp */ + regmap_read(sai->regmap, FSL_SAI_RTCAP, &val); + + return sprintf(buf, "%u\n", val); +} +static DEVICE_ATTR_RO(rx_bitcnt_latched_timestamp); + +static ssize_t +rx_timestamp_enable_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_TSEN; + regmap_update_bits(sai->regmap, FSL_SAI_RTCTL, FSL_SAI_xTCTL_TSEN, val); + return n; +} +static DEVICE_ATTR_WO(rx_timestamp_enable); + +static ssize_t +rx_timestamp_increment_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_TSINC; + regmap_update_bits(sai->regmap, FSL_SAI_RTCTL, FSL_SAI_xTCTL_TSINC, val); + return n; +} +static DEVICE_ATTR_WO(rx_timestamp_increment); + +static ssize_t +rx_bitcnt_reset_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_RBC; + regmap_update_bits(sai->regmap, FSL_SAI_RTCTL, FSL_SAI_xTCTL_RBC, val); + return n; +} +static DEVICE_ATTR_WO(rx_bitcnt_reset); + +static ssize_t +rx_timestamp_reset_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned int val = 0; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + val = FSL_SAI_xTCTL_RTSC; + regmap_update_bits(sai->regmap, FSL_SAI_RTCTL, FSL_SAI_xTCTL_RTSC, val); + return n; +} +static DEVICE_ATTR_WO(rx_timestamp_reset); + +static ssize_t +rx_monitor_spdif_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct fsl_sai *sai = dev_get_drvdata(dev); + unsigned char offset = sai->soc->reg_offset; + unsigned int val = 0; + bool enable = false; + unsigned int reg; + unsigned int shift; + unsigned int mask; + + if (kstrtouint(buf, 0, &val)) + return -EINVAL; + + if (val != 0) + enable = true; + + if (pm_runtime_active(&sai->pdev->dev) && enable) { + dev_err(dev, "device is busy\n"); + return -EBUSY; + } + + reg = IOMUXC_GPR6 + (sai->gpr_idx - 1) / 2 * 4; + shift = ((sai->gpr_idx - 1) % 2) * 16; + mask = 0x1F << shift; + + if (enable) { + pm_runtime_get_sync(&sai->pdev->dev); + /* Fix to MCLK3 */ + regmap_update_bits(sai->regmap_gpr, reg, mask, 0xF << shift); + regmap_update_bits(sai->regmap, FSL_SAI_xCR2(false, offset), + FSL_SAI_CR2_MSEL_MASK, FSL_SAI_CR2_MSEL(0x3)); + regmap_update_bits(sai->regmap, FSL_SAI_xCR2(false, offset), + FSL_SAI_CR2_DIV_MASK, 0x0); + regmap_update_bits(sai->regmap, FSL_SAI_xCR2(false, offset), + FSL_SAI_CR2_BCD_MSTR, FSL_SAI_CR2_BCD_MSTR); + regmap_update_bits(sai->regmap, FSL_SAI_xCR4(false, offset), + FSL_SAI_CR4_FSD_MSTR, FSL_SAI_CR4_FSD_MSTR); + regmap_update_bits(sai->regmap, FSL_SAI_xCSR(false, offset), + FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE); + sai->monitor_spdif_start = true; + } else { + if (sai->monitor_spdif_start) { + regmap_update_bits(sai->regmap, FSL_SAI_xCSR(false, offset), + FSL_SAI_CSR_TERE, 0); + pm_runtime_put_sync(&sai->pdev->dev); + sai->monitor_spdif_start = false; + } + } + + return n; +} +static DEVICE_ATTR_WO(rx_monitor_spdif); + +static struct attribute *fsl_sai_attrs[] = { + &dev_attr_tx_bitcnt.attr, + &dev_attr_rx_bitcnt.attr, + &dev_attr_tx_timestamp.attr, + &dev_attr_rx_timestamp.attr, + &dev_attr_tx_bitcnt_latched_timestamp.attr, + &dev_attr_rx_bitcnt_latched_timestamp.attr, + &dev_attr_tx_timestamp_enable.attr, + &dev_attr_rx_timestamp_enable.attr, + &dev_attr_tx_timestamp_increment.attr, + &dev_attr_rx_timestamp_increment.attr, + &dev_attr_tx_bitcnt_reset.attr, + &dev_attr_rx_bitcnt_reset.attr, + &dev_attr_tx_timestamp_reset.attr, + &dev_attr_rx_timestamp_reset.attr, + NULL, + NULL, +}; + +static struct attribute_group fsl_sai_attr_group = { + .attrs = fsl_sai_attrs, +}; + +const struct attribute_group *fsl_sai_get_dev_attribute_group(bool monitor_spdif) +{ + if (monitor_spdif) + fsl_sai_attrs[ARRAY_SIZE(fsl_sai_attrs) - 2] = &dev_attr_rx_monitor_spdif.attr; + + return &fsl_sai_attr_group; +} |