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93 lines
2.5 KiB
93 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/mtd/spi-nor.h> |
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#include <linux/spi/spi.h> |
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#include <linux/spi/spi-mem.h> |
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#include <linux/sysfs.h> |
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#include "core.h" |
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static ssize_t manufacturer_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct spi_device *spi = to_spi_device(dev); |
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struct spi_mem *spimem = spi_get_drvdata(spi); |
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struct spi_nor *nor = spi_mem_get_drvdata(spimem); |
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return sysfs_emit(buf, "%s\n", nor->manufacturer->name); |
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} |
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static DEVICE_ATTR_RO(manufacturer); |
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static ssize_t partname_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct spi_device *spi = to_spi_device(dev); |
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struct spi_mem *spimem = spi_get_drvdata(spi); |
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struct spi_nor *nor = spi_mem_get_drvdata(spimem); |
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return sysfs_emit(buf, "%s\n", nor->info->name); |
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} |
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static DEVICE_ATTR_RO(partname); |
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static ssize_t jedec_id_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct spi_device *spi = to_spi_device(dev); |
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struct spi_mem *spimem = spi_get_drvdata(spi); |
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struct spi_nor *nor = spi_mem_get_drvdata(spimem); |
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return sysfs_emit(buf, "%*phN\n", nor->info->id_len, nor->info->id); |
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} |
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static DEVICE_ATTR_RO(jedec_id); |
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static struct attribute *spi_nor_sysfs_entries[] = { |
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&dev_attr_manufacturer.attr, |
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&dev_attr_partname.attr, |
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&dev_attr_jedec_id.attr, |
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NULL |
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}; |
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static ssize_t sfdp_read(struct file *filp, struct kobject *kobj, |
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struct bin_attribute *bin_attr, char *buf, |
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loff_t off, size_t count) |
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{ |
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struct spi_device *spi = to_spi_device(kobj_to_dev(kobj)); |
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struct spi_mem *spimem = spi_get_drvdata(spi); |
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struct spi_nor *nor = spi_mem_get_drvdata(spimem); |
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struct sfdp *sfdp = nor->sfdp; |
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size_t sfdp_size = sfdp->num_dwords * sizeof(*sfdp->dwords); |
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return memory_read_from_buffer(buf, count, &off, nor->sfdp->dwords, |
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sfdp_size); |
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} |
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static BIN_ATTR_RO(sfdp, 0); |
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static struct bin_attribute *spi_nor_sysfs_bin_entries[] = { |
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&bin_attr_sfdp, |
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NULL |
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}; |
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static umode_t spi_nor_sysfs_is_bin_visible(struct kobject *kobj, |
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struct bin_attribute *attr, int n) |
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{ |
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struct spi_device *spi = to_spi_device(kobj_to_dev(kobj)); |
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struct spi_mem *spimem = spi_get_drvdata(spi); |
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struct spi_nor *nor = spi_mem_get_drvdata(spimem); |
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if (attr == &bin_attr_sfdp && nor->sfdp) |
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return 0444; |
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return 0; |
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} |
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static const struct attribute_group spi_nor_sysfs_group = { |
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.name = "spi-nor", |
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.is_bin_visible = spi_nor_sysfs_is_bin_visible, |
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.attrs = spi_nor_sysfs_entries, |
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.bin_attrs = spi_nor_sysfs_bin_entries, |
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}; |
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const struct attribute_group *spi_nor_sysfs_groups[] = { |
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&spi_nor_sysfs_group, |
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NULL |
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};
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