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path: root/package/kernel/linux/modules/i2c.mk
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#
# Copyright (C) 2006-2009 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

I2C_MENU:=I2C support

ModuleConfVar=$(word 1,$(subst :,$(space),$(1)))
ModuleFullPath=$(LINUX_DIR)/$(word 2,$(subst :,$(space),$(1))).ko
ModuleKconfig=$(foreach mod,$(1),$(call ModuleConfVar,$(mod)))
ModuleFiles=$(foreach mod,$(1),$(call ModuleFullPath,$(mod)))
ModuleAuto=$(call AutoLoad,$(1),$(foreach mod,$(2),$(basename $(notdir $(call ModuleFullPath,$(mod))))),$(3))

define i2c_defaults
  SUBMENU:=$(I2C_MENU)
  KCONFIG:=$(call ModuleKconfig,$(1))
  FILES:=$(call ModuleFiles,$(1))
  AUTOLOAD:=$(call ModuleAuto,$(2),$(1),$(3))
endef

I2C_CORE_MODULES:= \
  CONFIG_I2C:drivers/i2c/i2c-core \
  CONFIG_I2C_CHARDEV:drivers/i2c/i2c-dev

define KernelPackage/i2c-core
  $(call i2c_defaults,$(I2C_CORE_MODULES),51)
  TITLE:=I2C support
endef

define KernelPackage/i2c-core/description
 Kernel modules for I2C support
endef

$(eval $(call KernelPackage,i2c-core))


I2C_ALGOBIT_MODULES:= \
  CONFIG_I2C_ALGOBIT:drivers/i2c/algos/i2c-algo-bit

define KernelPackage/i2c-algo-bit
  $(call i2c_defaults,$(I2C_ALGOBIT_MODULES),55)
  TITLE:=I2C bit-banging interfaces
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-algo-bit/description
 Kernel modules for I2C bit-banging interfaces
endef

$(eval $(call KernelPackage,i2c-algo-bit))


I2C_ALGOPCA_MODULES:= \
  CONFIG_I2C_ALGOPCA:drivers/i2c/algos/i2c-algo-pca

define KernelPackage/i2c-algo-pca
  $(call i2c_defaults,$(I2C_ALGOPCA_MODULES),55)
  TITLE:=I2C PCA 9564 interfaces
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-algo-pca/description
 Kernel modules for I2C PCA 9564 interfaces
endef

$(eval $(call KernelPackage,i2c-algo-pca))


I2C_ALGOPCF_MODULES:= \
  CONFIG_I2C_ALGOPCF:drivers/i2c/algos/i2c-algo-pcf

define KernelPackage/i2c-algo-pcf
  $(call i2c_defaults,$(I2C_ALGOPCF_MODULES),55)
  TITLE:=I2C PCF 8584 interfaces
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-algo-pcf/description
 Kernel modules for I2C PCF 8584 interfaces
endef

$(eval $(call KernelPackage,i2c-algo-pcf))


I2C_GPIO_MODULES:= \
  CONFIG_I2C_GPIO:drivers/i2c/busses/i2c-gpio

define KernelPackage/i2c-gpio
  $(call i2c_defaults,$(I2C_GPIO_MODULES),59)
  TITLE:=GPIO-based bitbanging I2C
  DEPENDS:=@GPIO_SUPPORT +kmod-i2c-algo-bit
endef

define KernelPackage/i2c-gpio/description
 Kernel modules for a very simple bitbanging I2C driver utilizing the
 arch-neutral GPIO API to control the SCL and SDA lines.
endef

$(eval $(call KernelPackage,i2c-gpio))


I2C_I801_MODULES:= \
  CONFIG_I2C_I801:drivers/i2c/busses/i2c-i801

define KernelPackage/i2c-i801
  $(call i2c_defaults,$(I2C_I801_MODULES),59)
  TITLE:=Intel I801 and compatible I2C interfaces
  DEPENDS:=@PCI_SUPPORT @TARGET_x86 +kmod-i2c-core +kmod-i2c-smbus
endef

define KernelPackage/i2c-i801/description
 Support for the Intel I801 family of mainboard I2C interfaces,
 specifically 82801AA, 82801AB, 82801BA, 82801CA/CAM, 82801DB,
 82801EB/ER (ICH5/ICH5R), 6300ESB, ICH6, ICH7, ESB2, ICH8, ICH9,
 EP80579 (Tolapai), ICH10, 5/3400 Series (PCH), 6 Series (PCH),
 Patsburg (PCH), DH89xxCC (PCH), Panther Point (PCH),
 Lynx Point (PCH), Lynx Point-LP (PCH), Avoton (SOC),
 Wellsburg (PCH), Coleto Creek (PCH), Wildcat Point (PCH),
 Wildcat Point-LP (PCH), BayTrail (SOC), Sunrise Point-H (PCH),
 Sunrise Point-LP (PCH), DNV (SOC), Broxton (SOC),
 Lewisburg (PCH).
endef

$(eval $(call KernelPackage,i2c-i801))


I2C_MUX_MODULES:= \
  CONFIG_I2C_MUX:drivers/i2c/i2c-mux

define KernelPackage/i2c-mux
  $(call i2c_defaults,$(I2C_MUX_MODULES),51)
  TITLE:=I2C bus multiplexing support
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-mux/description
 Kernel modules for I2C bus multiplexing support
endef

$(eval $(call KernelPackage,i2c-mux))

I2C_MUX_GPIO_MODULES:= \
  CONFIG_I2C_MUX_GPIO:drivers/i2c/muxes/i2c-mux-gpio

define KernelPackage/i2c-mux-gpio
  $(call i2c_defaults,$(I2C_MUX_GPIO_MODULES),51)
  TITLE:=GPIO-based I2C mux/switches
  DEPENDS:=+kmod-i2c-mux
endef

define KernelPackage/i2c-mux-gpio/description
 Kernel modules for GENERIC_GPIO I2C bus mux/switching devices
endef

$(eval $(call KernelPackage,i2c-mux-gpio))


I2C_MUX_PCA9541_MODULES:= \
  CONFIG_I2C_MUX_PCA9541:drivers/i2c/muxes/i2c-mux-pca9541

define KernelPackage/i2c-mux-pca9541
  $(call i2c_defaults,$(I2C_MUX_PCA9541_MODULES),51)
  TITLE:=Philips PCA9541 I2C mux/switches
  DEPENDS:=+kmod-i2c-mux
endef

define KernelPackage/i2c-mux-pca9541/description
 Kernel modules for PCA9541 I2C bus mux/switching devices
endef

$(eval $(call KernelPackage,i2c-mux-pca9541))

I2C_MUX_PCA954x_MODULES:= \
  CONFIG_I2C_MUX_PCA954x:drivers/i2c/muxes/i2c-mux-pca954x

define KernelPackage/i2c-mux-pca954x
  $(call i2c_defaults,$(I2C_MUX_PCA954x_MODULES),51)
  TITLE:=Philips PCA954x I2C mux/switches
  DEPENDS:=+kmod-i2c-mux
endef

define KernelPackage/i2c-mux-pca954x/description
 Kernel modules for PCA954x I2C bus mux/switching devices
endef

$(eval $(call KernelPackage,i2c-mux-pca954x))


I2C_PIIX4_MODULES:= \
  CONFIG_I2C_PIIX4:drivers/i2c/busses/i2c-piix4

define KernelPackage/i2c-piix4
  $(call i2c_defaults,$(I2C_PIIX4_MODULES),59)
  TITLE:=Intel PIIX4 and compatible I2C interfaces
  DEPENDS:=@PCI_SUPPORT @TARGET_x86 +kmod-i2c-core
endef

define KernelPackage/i2c-piix4/description
 Support for the Intel PIIX4 family of mainboard I2C interfaces,
 specifically Intel PIIX4, Intel 440MX, ATI IXP200, ATI IXP300,
 ATI IXP400, ATI SB600, ATI SB700/SP5100, ATI SB800, AMD Hudson-2,
 AMD ML, AMD CZ, Serverworks OSB4, Serverworks CSB5,
 Serverworks CSB6, Serverworks HT-1000, Serverworks HT-1100 and
 SMSC Victory66.
endef

$(eval $(call KernelPackage,i2c-piix4))


I2C_PXA_MODULES:= \
  CONFIG_I2C_PXA:drivers/i2c/busses/i2c-pxa

define KernelPackage/i2c-pxa
  $(call i2c_defaults,$(I2C_PXA_MODULES),50)
  TITLE:=Intel PXA I2C bus driver
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-pxa/description
  Kernel module for Intel PXA2XX I2C adapter
endef

$(eval $(call KernelPackage,i2c-pxa))


I2C_SMBUS_MODULES:= \
  CONFIG_I2C_SMBUS:drivers/i2c/i2c-smbus

define KernelPackage/i2c-smbus
  $(call i2c_defaults,$(I2C_SMBUS_MODULES),58)
  TITLE:=SMBus-specific protocols helper
  DEPENDS:=+kmod-i2c-core
endef

define KernelPackage/i2c-smbus/description
 Support for the SMBus extensions to the I2C specification.
endef

$(eval $(call KernelPackage,i2c-smbus))



I2C_TINY_USB_MODULES:= \
  CONFIG_I2C_TINY_USB:drivers/i2c/busses/i2c-tiny-usb

define KernelPackage/i2c-tiny-usb
  $(call i2c_defaults,$(I2C_TINY_USB_MODULES),59)
  TITLE:=I2C Tiny USB adaptor
  DEPENDS:=@USB_SUPPORT +kmod-i2c-core +kmod-usb-core
endef

define KernelPackage/i2c-tiny-usb/description
 Kernel module for the I2C Tiny USB adaptor developed
 by Till Harbaum (http://www.harbaum.org/till/i2c_tiny_usb)
endef

$(eval $(call KernelPackage,i2c-tiny-usb))
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-04 16:43:14 +0000
>t != p2m_ram_rw) return NULL; if (pcli_mfn != NULL) *pcli_mfn = cli_mfn; return map_domain_page(cli_mfn); } #endif EXPORT int tmh_copy_from_client(pfp_t *pfp, tmem_cli_mfn_t cmfn, pagesize_t tmem_offset, pagesize_t pfn_offset, pagesize_t len, void *cli_va) { unsigned long tmem_mfn; void *tmem_va; ASSERT(pfp != NULL); if ( tmem_offset || pfn_offset || len ) if ( (cli_va == NULL) && ((cli_va = cli_mfn_to_va(cmfn,NULL)) == NULL) ) return -EFAULT; tmem_mfn = page_to_mfn(pfp); tmem_va = map_domain_page(tmem_mfn); mb(); if (!len && !tmem_offset && !pfn_offset) memset(tmem_va, 0, PAGE_SIZE); else if (len == PAGE_SIZE && !tmem_offset && !pfn_offset) tmh_copy_page(tmem_va, cli_va); else if ( (tmem_offset+len <= PAGE_SIZE) && (pfn_offset+len <= PAGE_SIZE) ) memcpy((char *)tmem_va+tmem_offset,(char *)cli_va+pfn_offset,len); unmap_domain_page(cli_va); unmap_domain_page(tmem_va); return 1; } EXPORT int tmh_compress_from_client(tmem_cli_mfn_t cmfn, void **out_va, size_t *out_len, void *cli_va) { int ret = 0; unsigned char *dmem = this_cpu(dstmem); unsigned char *wmem = this_cpu(workmem); if ( (cli_va == NULL) && (cli_va = cli_mfn_to_va(cmfn,NULL)) == NULL) return -EFAULT; if ( dmem == NULL || wmem == NULL ) return 0; /* no buffer, so can't compress */ mb(); ret = lzo1x_1_compress(cli_va, PAGE_SIZE, dmem, out_len, wmem); ASSERT(ret == LZO_E_OK); *out_va = dmem; unmap_domain_page(cli_va); return 1; } EXPORT int tmh_copy_to_client(tmem_cli_mfn_t cmfn, pfp_t *pfp, pagesize_t tmem_offset, pagesize_t pfn_offset, pagesize_t len, void *cli_va) { unsigned long tmem_mfn, cli_mfn = 0; int mark_dirty = 1; void *tmem_va; ASSERT(pfp != NULL); if ( cli_va != NULL ) mark_dirty = 0; else if ( (cli_va = cli_mfn_to_va(cmfn,&cli_mfn)) == NULL) return -EFAULT; tmem_mfn = page_to_mfn(pfp); tmem_va = map_domain_page(tmem_mfn); if (len == PAGE_SIZE && !tmem_offset && !pfn_offset) tmh_copy_page(cli_va, tmem_va); else if ( (tmem_offset+len <= PAGE_SIZE) && (pfn_offset+len <= PAGE_SIZE) ) memcpy((char *)cli_va+pfn_offset,(char *)tmem_va+tmem_offset,len); unmap_domain_page(tmem_va); if ( mark_dirty ) { unmap_domain_page(cli_va); paging_mark_dirty(current->domain,cli_mfn); } mb(); return 1; } EXPORT int tmh_decompress_to_client(tmem_cli_mfn_t cmfn, void *tmem_va, size_t size, void *cli_va) { unsigned long cli_mfn = 0; int mark_dirty = 1; size_t out_len = PAGE_SIZE; int ret; if ( cli_va != NULL ) mark_dirty = 0; else if ( (cli_va = cli_mfn_to_va(cmfn,&cli_mfn)) == NULL) return -EFAULT; ret = lzo1x_decompress_safe(tmem_va, size, cli_va, &out_len); ASSERT(ret == LZO_E_OK); ASSERT(out_len == PAGE_SIZE); if ( mark_dirty ) { unmap_domain_page(cli_va); paging_mark_dirty(current->domain,cli_mfn); } mb(); return 1; } EXPORT int tmh_copy_tze_to_client(tmem_cli_mfn_t cmfn, void *tmem_va, pagesize_t len) { void *cli_va; unsigned long cli_mfn; ASSERT(!(len & (sizeof(uint64_t)-1))); ASSERT(len <= PAGE_SIZE); ASSERT(len > 0 || tmem_va == NULL); if ( (cli_va = cli_mfn_to_va(cmfn,&cli_mfn)) == NULL) return -EFAULT; if ( len > 0 ) memcpy((char *)cli_va,(char *)tmem_va,len); if ( len < PAGE_SIZE ) memset((char *)cli_va+len,0,PAGE_SIZE-len); unmap_domain_page(cli_va); paging_mark_dirty(current->domain,cli_mfn); mb(); return 1; } /****************** XEN-SPECIFIC MEMORY ALLOCATION ********************/ EXPORT struct xmem_pool *tmh_mempool = 0; EXPORT unsigned int tmh_mempool_maxalloc = 0; EXPORT DEFINE_SPINLOCK(tmh_page_list_lock); EXPORT PAGE_LIST_HEAD(tmh_page_list); EXPORT unsigned long tmh_page_list_pages = 0; /* free anything on tmh_page_list to Xen's scrub list */ EXPORT void tmh_release_avail_pages_to_host(void) { spin_lock(&tmh_page_list_lock); while ( !page_list_empty(&tmh_page_list) ) { struct page_info *pg = page_list_remove_head(&tmh_page_list); scrub_one_page(pg); tmh_page_list_pages--; free_domheap_page(pg); } ASSERT(tmh_page_list_pages == 0); INIT_PAGE_LIST_HEAD(&tmh_page_list); spin_unlock(&tmh_page_list_lock); } EXPORT void tmh_scrub_page(struct page_info *pi, unsigned int memflags) { if ( pi == NULL ) return; if ( !(memflags & MEMF_tmem) ) scrub_one_page(pi); } #ifndef __i386__ static noinline void *tmh_mempool_page_get(unsigned long size) { struct page_info *pi; ASSERT(size == PAGE_SIZE); if ( (pi = tmh_alloc_page(NULL,0)) == NULL ) return NULL; ASSERT(IS_VALID_PAGE(pi)); return page_to_virt(pi); } static void tmh_mempool_page_put(void *page_va) { ASSERT(IS_PAGE_ALIGNED(page_va)); tmh_free_page(virt_to_page(page_va)); } static int __init tmh_mempool_init(void) { tmh_mempool = xmem_pool_create("tmem", tmh_mempool_page_get, tmh_mempool_page_put, PAGE_SIZE, 0, PAGE_SIZE); if ( tmh_mempool ) tmh_mempool_maxalloc = xmem_pool_maxalloc(tmh_mempool); return tmh_mempool != NULL; } /* persistent pools are per-domain */ static void *tmh_persistent_pool_page_get(unsigned long size) { struct page_info *pi; struct domain *d = current->domain; ASSERT(size == PAGE_SIZE); if ( (pi = _tmh_alloc_page_thispool(d)) == NULL ) return NULL; ASSERT(IS_VALID_PAGE(pi)); return __map_domain_page(pi); } static void tmh_persistent_pool_page_put(void *page_va) { struct page_info *pi; ASSERT(IS_PAGE_ALIGNED(page_va)); pi = virt_to_page(page_va); ASSERT(IS_VALID_PAGE(pi)); _tmh_free_page_thispool(pi); } #endif /****************** XEN-SPECIFIC CLIENT HANDLING ********************/ EXPORT tmh_client_t *tmh_client_init(cli_id_t cli_id) { tmh_client_t *tmh; char name[5]; int i, shift; if ( (tmh = xmalloc(tmh_client_t)) == NULL ) return NULL; for (i = 0, shift = 12; i < 4; shift -=4, i++) name[i] = (((unsigned short)cli_id >> shift) & 0xf) + '0'; name[4] = '\0'; #ifndef __i386__ tmh->persistent_pool = xmem_pool_create(name, tmh_persistent_pool_page_get, tmh_persistent_pool_page_put, PAGE_SIZE, 0, PAGE_SIZE); if ( tmh->persistent_pool == NULL ) { xfree(tmh); return NULL; } #endif return tmh; } EXPORT void tmh_client_destroy(tmh_client_t *tmh) { #ifndef __i386__ xmem_pool_destroy(tmh->persistent_pool); #endif put_domain(tmh->domain); tmh->domain = NULL; } /****************** XEN-SPECIFIC HOST INITIALIZATION ********************/ #ifndef __i386__ static int dstmem_order, workmem_order; static int cpu_callback( struct notifier_block *nfb, unsigned long action, void *hcpu) { unsigned int cpu = (unsigned long)hcpu; switch ( action ) { case CPU_UP_PREPARE: { if ( per_cpu(dstmem, cpu) == NULL ) { struct page_info *p = alloc_domheap_pages(0, dstmem_order, 0); per_cpu(dstmem, cpu) = p ? page_to_virt(p) : NULL; } if ( per_cpu(workmem, cpu) == NULL ) { struct page_info *p = alloc_domheap_pages(0, workmem_order, 0); per_cpu(workmem, cpu) = p ? page_to_virt(p) : NULL; } break; } case CPU_DEAD: case CPU_UP_CANCELED: { if ( per_cpu(dstmem, cpu) != NULL ) { struct page_info *p = virt_to_page(per_cpu(dstmem, cpu)); free_domheap_pages(p, dstmem_order); per_cpu(dstmem, cpu) = NULL; } if ( per_cpu(workmem, cpu) != NULL ) { struct page_info *p = virt_to_page(per_cpu(workmem, cpu)); free_domheap_pages(p, workmem_order); per_cpu(workmem, cpu) = NULL; } break; } default: break; } return NOTIFY_DONE; } static struct notifier_block cpu_nfb = { .notifier_call = cpu_callback }; EXPORT int __init tmh_init(void) { unsigned int cpu; if ( !tmh_mempool_init() ) return 0; dstmem_order = get_order_from_pages(LZO_DSTMEM_PAGES); workmem_order = get_order_from_bytes(LZO1X_1_MEM_COMPRESS); for_each_online_cpu ( cpu ) { void *hcpu = (void *)(long)cpu; cpu_callback(&cpu_nfb, CPU_UP_PREPARE, hcpu); } register_cpu_notifier(&cpu_nfb); return 1; } #else EXPORT int __init tmh_init(void) { return 1; } #endif
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-04 16:43:14 +0000