Loading src/drivers/elphel/Kconfig +16 −10 Original line number Original line Diff line number Diff line Loading @@ -4,9 +4,15 @@ menu "Elphel devices" menu "Elphel devices" config ELPHEL393 config ELPHEL393 tristate "Support Elphel 10393 board voltage regulator" tristate "Support Elphel 10393 board voltage regulator, DMA memory allocator" # add more # add more # depends on I2C && SYSFS # depends on I2C && SYSFS help help Say Y here if you have a Elphel board 10393. Say Y here if you have a Elphel board 10393. config ELPHELDRVONMICROZED tristate "Provide only Elphel features which are compatible with Microzed" help Say Y here if you debug Elpel camera code on Microzed board. endmenu endmenu src/drivers/elphel/Makefile +7 −5 Original line number Original line Diff line number Diff line Loading @@ -3,3 +3,5 @@ # # obj-$(CONFIG_ELPHEL393) += elphel393-pwr.o obj-$(CONFIG_ELPHEL393) += elphel393-pwr.o obj-$(CONFIG_ELPHEL393) += elphel393-mem.o obj-$(CONFIG_ELPHELDRVONMICROZED) += elphel393-mem.o src/drivers/elphel/elphel393-mem.c 0 → 100644 +135 −0 Original line number Original line Diff line number Diff line #include <linux/module.h> #include <linux/init.h> #include <linux/of.h> #include <linux/kernel.h> #include <linux/bootmem.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/dma-direction.h> #include <asm/dma-mapping.h> #define SYSFS_PERMISSIONS 0644 /* default permissions for sysfs files */ #define SYSFS_READONLY 0444 static ssize_t get_paddr(struct device *dev, struct device_attribute *attr, char *buf); struct elphel_buf_t { void *vaddr; dma_addr_t paddr; ssize_t size; }; static struct elphel_buf_t elphel_buf = { .vaddr = NULL, .paddr = 0, .size = 0 }; static int __init elphelmem_init(void) { struct device_node *node; const __be32 *bufsize_be; printk("======== Allocating memory buffer ========\n"); node = of_find_node_by_name(NULL, "elphel393-mem"); if (!node) { printk("ERROR: No node found\n"); return -ENODEV; } bufsize_be = (__be32 *)of_get_property(node, "memsize", NULL); elphel_buf.size = be32_to_cpup(bufsize_be); elphel_buf.vaddr = dma_alloc_coherent(NULL,(elphel_buf.size*PAGE_SIZE),&(elphel_buf.paddr),GFP_KERNEL); if(elphel_buf.paddr) { printk("Allocated %u pages at address %x\n", (u32)elphel_buf.size, (u32)elphel_buf.paddr); } else printk("ERROR allocating memory buffer"); return 0; } static void __exit elphelmem_exit(void) { printk("Goodbye Cruel World!\n"); } // SYSFS static ssize_t get_paddr(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf,"%x\n", (u32)elphel_buf.paddr); } static ssize_t get_size(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf,"%u\n", elphel_buf.size); } static DEVICE_ATTR(buffer_address, SYSFS_PERMISSIONS & SYSFS_READONLY, get_paddr, NULL); static DEVICE_ATTR(buffer_pages, SYSFS_PERMISSIONS & SYSFS_READONLY, get_size, NULL); static struct attribute *root_dev_attrs[] = { &dev_attr_buffer_address.attr, &dev_attr_buffer_pages.attr, NULL }; static const struct attribute_group dev_attr_root_group = { .attrs = root_dev_attrs, .name = NULL, }; static int elphel393_mem_sysfs_register(struct platform_device *pdev) { int retval=0; struct device *dev = &pdev->dev; if (&dev->kobj) { if (((retval = sysfs_create_group(&dev->kobj, &dev_attr_root_group)))<0) return retval; } return retval; } static int elphel393_mem_probe(struct platform_device *pdev) { elphel393_mem_sysfs_register(pdev); dev_info(&pdev->dev,"Probing elphel393-mem\n"); return 0; } static int elphel393_mem_remove(struct platform_device *pdev) { dev_info(&pdev->dev,"Removing elphel393-mem"); return 0; } static struct of_device_id elphel393_mem_of_match[] = { { .compatible = "elphel,elphel393-mem-1.00", }, { /* end of table */} }; MODULE_DEVICE_TABLE(of, elphel393_pwr_of_match); static struct platform_driver elphel393_mem = { .probe = elphel393_mem_probe, .remove = elphel393_mem_remove, .driver = { .name = "elphel393-mem", .owner = THIS_MODULE, .of_match_table = elphel393_mem_of_match, .pm = NULL, /* power management */ }, }; module_platform_driver(elphel393_mem); module_init(elphelmem_init); module_exit(elphelmem_exit); MODULE_LICENSE("GPL"); Loading
src/drivers/elphel/Kconfig +16 −10 Original line number Original line Diff line number Diff line Loading @@ -4,9 +4,15 @@ menu "Elphel devices" menu "Elphel devices" config ELPHEL393 config ELPHEL393 tristate "Support Elphel 10393 board voltage regulator" tristate "Support Elphel 10393 board voltage regulator, DMA memory allocator" # add more # add more # depends on I2C && SYSFS # depends on I2C && SYSFS help help Say Y here if you have a Elphel board 10393. Say Y here if you have a Elphel board 10393. config ELPHELDRVONMICROZED tristate "Provide only Elphel features which are compatible with Microzed" help Say Y here if you debug Elpel camera code on Microzed board. endmenu endmenu
src/drivers/elphel/Makefile +7 −5 Original line number Original line Diff line number Diff line Loading @@ -3,3 +3,5 @@ # # obj-$(CONFIG_ELPHEL393) += elphel393-pwr.o obj-$(CONFIG_ELPHEL393) += elphel393-pwr.o obj-$(CONFIG_ELPHEL393) += elphel393-mem.o obj-$(CONFIG_ELPHELDRVONMICROZED) += elphel393-mem.o
src/drivers/elphel/elphel393-mem.c 0 → 100644 +135 −0 Original line number Original line Diff line number Diff line #include <linux/module.h> #include <linux/init.h> #include <linux/of.h> #include <linux/kernel.h> #include <linux/bootmem.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/dma-direction.h> #include <asm/dma-mapping.h> #define SYSFS_PERMISSIONS 0644 /* default permissions for sysfs files */ #define SYSFS_READONLY 0444 static ssize_t get_paddr(struct device *dev, struct device_attribute *attr, char *buf); struct elphel_buf_t { void *vaddr; dma_addr_t paddr; ssize_t size; }; static struct elphel_buf_t elphel_buf = { .vaddr = NULL, .paddr = 0, .size = 0 }; static int __init elphelmem_init(void) { struct device_node *node; const __be32 *bufsize_be; printk("======== Allocating memory buffer ========\n"); node = of_find_node_by_name(NULL, "elphel393-mem"); if (!node) { printk("ERROR: No node found\n"); return -ENODEV; } bufsize_be = (__be32 *)of_get_property(node, "memsize", NULL); elphel_buf.size = be32_to_cpup(bufsize_be); elphel_buf.vaddr = dma_alloc_coherent(NULL,(elphel_buf.size*PAGE_SIZE),&(elphel_buf.paddr),GFP_KERNEL); if(elphel_buf.paddr) { printk("Allocated %u pages at address %x\n", (u32)elphel_buf.size, (u32)elphel_buf.paddr); } else printk("ERROR allocating memory buffer"); return 0; } static void __exit elphelmem_exit(void) { printk("Goodbye Cruel World!\n"); } // SYSFS static ssize_t get_paddr(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf,"%x\n", (u32)elphel_buf.paddr); } static ssize_t get_size(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf,"%u\n", elphel_buf.size); } static DEVICE_ATTR(buffer_address, SYSFS_PERMISSIONS & SYSFS_READONLY, get_paddr, NULL); static DEVICE_ATTR(buffer_pages, SYSFS_PERMISSIONS & SYSFS_READONLY, get_size, NULL); static struct attribute *root_dev_attrs[] = { &dev_attr_buffer_address.attr, &dev_attr_buffer_pages.attr, NULL }; static const struct attribute_group dev_attr_root_group = { .attrs = root_dev_attrs, .name = NULL, }; static int elphel393_mem_sysfs_register(struct platform_device *pdev) { int retval=0; struct device *dev = &pdev->dev; if (&dev->kobj) { if (((retval = sysfs_create_group(&dev->kobj, &dev_attr_root_group)))<0) return retval; } return retval; } static int elphel393_mem_probe(struct platform_device *pdev) { elphel393_mem_sysfs_register(pdev); dev_info(&pdev->dev,"Probing elphel393-mem\n"); return 0; } static int elphel393_mem_remove(struct platform_device *pdev) { dev_info(&pdev->dev,"Removing elphel393-mem"); return 0; } static struct of_device_id elphel393_mem_of_match[] = { { .compatible = "elphel,elphel393-mem-1.00", }, { /* end of table */} }; MODULE_DEVICE_TABLE(of, elphel393_pwr_of_match); static struct platform_driver elphel393_mem = { .probe = elphel393_mem_probe, .remove = elphel393_mem_remove, .driver = { .name = "elphel393-mem", .owner = THIS_MODULE, .of_match_table = elphel393_mem_of_match, .pm = NULL, /* power management */ }, }; module_platform_driver(elphel393_mem); module_init(elphelmem_init); module_exit(elphelmem_exit); MODULE_LICENSE("GPL");
