menu "I2C Hardware Bus support"
- default y
- help
- This exposes the various PowerMac i2c interfaces to the linux i2c
- layer and to userland. It is used by various drivers on the PowerMac
- platform, and should generally be enabled.
-
- This support is also available as a module. If so, the module
- will be called i2c-powermac.
-
-comment "I2C system bus drivers (mostly embedded / system-on-chip)"
-
-config I2C_AT91
- tristate "Atmel AT91 I2C Two-Wire interface (TWI)"
- depends on ARCH_AT91 && EXPERIMENTAL && BROKEN
- help
- This supports the use of the I2C interface on Atmel AT91
- processors.
-
- This driver is BROKEN because the controller which it uses
- will easily trigger RX overrun and TX underrun errors. Using
- low I2C clock rates may partially work around those issues
- on some systems. Another serious problem is that there is no
- documented way to issue repeated START conditions, as needed
- to support combined I2C messages. Use the i2c-gpio driver
- unless your system can cope with those limitations.
-
-config I2C_AU1550
- tristate "Au1550/Au1200 SMBus interface"
- depends on SOC_AU1550 || SOC_AU1200
- help
- If you say yes to this option, support will be included for the
- Au1550 and Au1200 SMBus interface.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-au1550.
-
-config I2C_BLACKFIN_TWI
- tristate "Blackfin TWI I2C support"
- depends on BLACKFIN
- depends on !BF561 && !BF531 && !BF532 && !BF533
- help
- This is the I2C bus driver for Blackfin on-chip TWI interface.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-bfin-twi.
-
-config I2C_BLACKFIN_TWI_CLK_KHZ
- int "Blackfin TWI I2C clock (kHz)"
- depends on I2C_BLACKFIN_TWI
- range 21 400
- default 50
- help
- The unit of the TWI clock is kHz.
-
-config I2C_CPM
- tristate "Freescale CPM1 or CPM2 (MPC8xx/826x)"
- depends on (CPM1 || CPM2) && OF_I2C
- help
- This supports the use of the I2C interface on Freescale
- processors with CPM1 or CPM2.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-cpm.
-
-config I2C_DAVINCI
- tristate "DaVinci I2C driver"
- depends on ARCH_DAVINCI
- help
- Support for TI DaVinci I2C controller driver.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-davinci.
-
- Please note that this driver might be needed to bring up other
- devices such as DaVinci NIC.
- For details please see http://www.ti.com/davinci
-
-config I2C_DESIGNWARE
- tristate "Synopsys DesignWare"
- depends on HAVE_CLK
- help
- If you say yes to this option, support will be included for the
- Synopsys DesignWare I2C adapter. Only master mode is supported.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-designware.
-
-config I2C_GPIO
- tristate "GPIO-based bitbanging I2C"
- depends on GENERIC_GPIO
- select I2C_ALGOBIT
- help
- This is a very simple bitbanging I2C driver utilizing the
- arch-neutral GPIO API to control the SCL and SDA lines.
-
-config I2C_HIGHLANDER
- tristate "Highlander FPGA SMBus interface"
- depends on SH_HIGHLANDER
- help
- If you say yes to this option, support will be included for
- the SMBus interface located in the FPGA on various Highlander
- boards, particularly the R0P7780LC0011RL and R0P7785LC0011RL
- FPGAs. This is wholly unrelated to the SoC I2C.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-highlander.
-
-config I2C_IBM_IIC
- tristate "IBM PPC 4xx on-chip I2C interface"
- depends on 4xx
- help
- Say Y here if you want to use IIC peripheral found on
- embedded IBM PPC 4xx based systems.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-ibm_iic.
-
-config I2C_IMX
- tristate "IMX I2C interface"
- depends on ARCH_MXC
- help
- Say Y here if you want to use the IIC bus controller on
- the Freescale i.MX/MXC processors.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-imx.
-
-config I2C_IOP3XX
- tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface"
- depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX
- help
- Say Y here if you want to use the IIC bus controller on
- the Intel IOPx3xx I/O Processors or IXP4xx Network Processors.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-iop3xx.
-
-config I2C_IXP2000
- tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
- depends on ARCH_IXP2000
- select I2C_ALGOBIT
- help
- Say Y here if you have an Intel IXP2000 (2400, 2800, 2850) based
- system and are using GPIO lines for an I2C bus.
-
- This support is also available as a module. If so, the module
- will be called i2c-ixp2000.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- instead.
-
-config I2C_MPC
- tristate "MPC107/824x/85xx/52xx/86xx"
- depends on PPC32
- help
- If you say yes to this option, support will be included for the
- built-in I2C interface on the MPC107/Tsi107/MPC8240/MPC8245 and
- MPC85xx/MPC8641 family processors. The driver may also work on 52xx
- family processors, though interrupts are known not to work.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-mpc.
-
-config I2C_MV64XXX
- tristate "Marvell mv64xxx I2C Controller"
- depends on (MV64X60 || PLAT_ORION) && EXPERIMENTAL
- help
- If you say yes to this option, support will be included for the
- built-in I2C interface on the Marvell 64xxx line of host bridges.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-mv64xxx.
+ comment "PC SMBus host controller drivers"
+ depends on PCI
+
+ config I2C_ALI1535
+ tristate "ALI 1535"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the SMB
+ Host controller on Acer Labs Inc. (ALI) M1535 South Bridges. The SMB
+ controller is part of the 7101 device, which is an ACPI-compliant
+ Power Management Unit (PMU).
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-ali1535.
+
+ config I2C_ALI1563
+ tristate "ALI 1563"
+ depends on PCI && EXPERIMENTAL
+ help
+ If you say yes to this option, support will be included for the SMB
+ Host controller on Acer Labs Inc. (ALI) M1563 South Bridges. The SMB
+ controller is part of the 7101 device, which is an ACPI-compliant
+ Power Management Unit (PMU).
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-ali1563.
+
+ config I2C_ALI15X3
+ tristate "ALI 15x3"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the
+ Acer Labs Inc. (ALI) M1514 and M1543 motherboard I2C interfaces.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-ali15x3.
+
+ config I2C_AMD756
+ tristate "AMD 756/766/768/8111 and nVidia nForce"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the AMD
+ 756/766/768 mainboard I2C interfaces. The driver also includes
+ support for the first (SMBus 1.0) I2C interface of the AMD 8111 and
+ the nVidia nForce I2C interface.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-amd756.
+
+ config I2C_AMD756_S4882
+ tristate "SMBus multiplexing on the Tyan S4882"
+ depends on I2C_AMD756 && X86 && EXPERIMENTAL
+ help
+ Enabling this option will add specific SMBus support for the Tyan
+ S4882 motherboard. On this 4-CPU board, the SMBus is multiplexed
+ over 8 different channels, where the various memory module EEPROMs
+ and temperature sensors live. Saying yes here will give you access
+ to these in addition to the trunk.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-amd756-s4882.
+
+ config I2C_AMD8111
+ tristate "AMD 8111"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the
+ second (SMBus 2.0) AMD 8111 mainboard I2C interface.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-amd8111.
+
+ config I2C_I801
+ tristate "Intel 82801 (ICH/PCH)"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the Intel
+ 801 family of mainboard I2C interfaces. Specifically, the following
+ versions of the chipset are supported:
+ 82801AA
+ 82801AB
+ 82801BA
+ 82801CA/CAM
+ 82801DB
+ 82801EB/ER (ICH5/ICH5R)
+ 6300ESB
+ ICH6
+ ICH7
+ ESB2
+ ICH8
+ ICH9
+ Tolapai
+ ICH10
+ 3400/5 Series (PCH)
+ Cougar Point (PCH)
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-i801.
+
+ config I2C_ISCH
+ tristate "Intel SCH SMBus 1.0"
+ depends on PCI
+ help
+ Say Y here if you want to use SMBus controller on the Intel SCH
+ based systems.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-isch.
+
+ config I2C_PIIX4
+ tristate "Intel PIIX4 and compatible (ATI/AMD/Serverworks/Broadcom/SMSC)"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the Intel
+ PIIX4 family of mainboard I2C interfaces. Specifically, the following
+ versions of the chipset are supported (note that Serverworks is part
+ of Broadcom):
+ Intel PIIX4
+ Intel 440MX
+ ATI IXP200
+ ATI IXP300
+ ATI IXP400
+ ATI SB600
+ ATI SB700
+ ATI SB800
+ AMD Hudson-2
+ Serverworks OSB4
+ Serverworks CSB5
+ Serverworks CSB6
+ Serverworks HT-1000
+ Serverworks HT-1100
+ SMSC Victory66
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-piix4.
+
+ config I2C_NFORCE2
+ tristate "Nvidia nForce2, nForce3 and nForce4"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the Nvidia
+ nForce2, nForce3 and nForce4 families of mainboard I2C interfaces.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-nforce2.
+
+ config I2C_NFORCE2_S4985
+ tristate "SMBus multiplexing on the Tyan S4985"
+ depends on I2C_NFORCE2 && X86 && EXPERIMENTAL
+ help
+ Enabling this option will add specific SMBus support for the Tyan
+ S4985 motherboard. On this 4-CPU board, the SMBus is multiplexed
+ over 4 different channels, where the various memory module EEPROMs
+ live. Saying yes here will give you access to these in addition
+ to the trunk.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-nforce2-s4985.
+
+ config I2C_SIS5595
+ tristate "SiS 5595"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the
+ SiS5595 SMBus (a subset of I2C) interface.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-sis5595.
+
+ config I2C_SIS630
+ tristate "SiS 630/730"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the
+ SiS630 and SiS730 SMBus (a subset of I2C) interface.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-sis630.
+
+ config I2C_SIS96X
+ tristate "SiS 96x"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the SiS
+ 96x SMBus (a subset of I2C) interfaces. Specifically, the following
+ chipsets are supported:
+ 645/961
+ 645DX/961
+ 645DX/962
+ 648/961
+ 650/961
+ 735
+ 745
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-sis96x.
+
+ config I2C_VIA
+ tristate "VIA VT82C586B"
+ depends on PCI && EXPERIMENTAL
+ select I2C_ALGOBIT
+ help
+ If you say yes to this option, support will be included for the VIA
+ 82C586B I2C interface
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-via.
+
+ config I2C_VIAPRO
+ tristate "VIA VT82C596/82C686/82xx and CX700/VX8xx"
+ depends on PCI
+ help
+ If you say yes to this option, support will be included for the VIA
+ VT82C596 and later SMBus interface. Specifically, the following
+ chipsets are supported:
+ VT82C596A/B
+ VT82C686A/B
+ VT8231
+ VT8233/A
+ VT8235
+ VT8237R/A/S
+ VT8251
+ CX700
+ VX800/VX820
+ VX855/VX875
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-viapro.
+
+ if ACPI
+
+ comment "ACPI drivers"
+
+ config I2C_SCMI
+ tristate "SMBus Control Method Interface"
+ help
+ This driver supports the SMBus Control Method Interface. It needs the
+ BIOS to declare ACPI control methods as described in the SMBus Control
+ Method Interface specification.
+
+ To compile this driver as a module, choose M here:
+ the module will be called i2c-scmi.
+
+ endif # ACPI
+
+ comment "Mac SMBus host controller drivers"
+ depends on PPC_CHRP || PPC_PMAC
+
+ config I2C_HYDRA
+ tristate "CHRP Apple Hydra Mac I/O I2C interface"
+ depends on PCI && PPC_CHRP && EXPERIMENTAL
+ select I2C_ALGOBIT
+ help
+ This supports the use of the I2C interface in the Apple Hydra Mac
+ I/O chip on some CHRP machines (e.g. the LongTrail). Say Y if you
+ have such a machine.
+
+ This support is also available as a module. If so, the module
+ will be called i2c-hydra.
+
+ config I2C_POWERMAC
+ tristate "Powermac I2C interface"
+ depends on PPC_PMAC
-config I2C_OCORES
- tristate "OpenCores I2C Controller"
- depends on EXPERIMENTAL
- help
- If you say yes to this option, support will be included for the
- OpenCores I2C controller. For details see
- http://www.opencores.org/projects.cgi/web/i2c/overview
-
- This driver can also be built as a module. If so, the module
- will be called i2c-ocores.
-
-config I2C_OMAP
- tristate "OMAP I2C adapter"
- depends on ARCH_OMAP
- default y if MACH_OMAP_H3 || MACH_OMAP_OSK
- help
- If you say yes to this option, support will be included for the
- I2C interface on the Texas Instruments OMAP1/2 family of processors.
- Like OMAP1510/1610/1710/5912 and OMAP242x.
- For details see http://www.ti.com/omap.
-
-config I2C_PASEMI
- tristate "PA Semi SMBus interface"
- depends on PPC_PASEMI && PCI
- help
- Supports the PA Semi PWRficient on-chip SMBus interfaces.
-
-config I2C_PNX
- tristate "I2C bus support for Philips PNX targets"
- depends on ARCH_PNX4008
- help
- This driver supports the Philips IP3204 I2C IP block master and/or
- slave controller
-
- This driver can also be built as a module. If so, the module
- will be called i2c-pnx.
-
-config I2C_PXA
- tristate "Intel PXA2XX I2C adapter"
- depends on ARCH_PXA || ARCH_MMP
- help
- If you have devices in the PXA I2C bus, say yes to this option.
- This driver can also be built as a module. If so, the module
- will be called i2c-pxa.
-
-config I2C_PXA_SLAVE
- bool "Intel PXA2XX I2C Slave comms support"
- depends on I2C_PXA
- help
- Support I2C slave mode communications on the PXA I2C bus. This
- is necessary for systems where the PXA may be a target on the
- I2C bus.
-
-config I2C_S3C2410
- tristate "S3C2410 I2C Driver"
- depends on ARCH_S3C2410 || ARCH_S3C64XX
- help
- Say Y here to include support for I2C controller in the
- Samsung S3C2410 based System-on-Chip devices.
-
-config I2C_S6000
- tristate "S6000 I2C support"
- depends on XTENSA_VARIANT_S6000
- help
- This driver supports the on chip I2C device on the
- S6000 xtensa processor family.
-
- To compile this driver as a module, choose M here. The module
- will be called i2c-s6000.
-
-config I2C_SH7760
- tristate "Renesas SH7760 I2C Controller"
- depends on CPU_SUBTYPE_SH7760
- help
- This driver supports the 2 I2C interfaces on the Renesas SH7760.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-sh7760.
-
-config I2C_SH_MOBILE
- tristate "SuperH Mobile I2C Controller"
- depends on SUPERH
- help
- If you say yes to this option, support will be included for the
- built-in I2C interface on the Renesas SH-Mobile processor.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-sh_mobile.
-
-config I2C_SIMTEC
- tristate "Simtec Generic I2C interface"
- select I2C_ALGOBIT
- help
- If you say yes to this option, support will be included for
- the Simtec Generic I2C interface. This driver is for the
- simple I2C bus used on newer Simtec products for general
- I2C, such as DDC on the Simtec BBD2016A.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-simtec.
-
-config I2C_STU300
- tristate "ST Microelectronics DDC I2C interface"
- depends on MACH_U300
- default y if MACH_U300
- help
- If you say yes to this option, support will be included for the
- I2C interface from ST Microelectronics simply called "DDC I2C"
- supporting both I2C and DDC, used in e.g. the U300 series
- mobile platforms.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-stu300.
-
-config I2C_VERSATILE
- tristate "ARM Versatile/Realview I2C bus support"
- depends on ARCH_VERSATILE || ARCH_REALVIEW
- select I2C_ALGOBIT
- help
- Say yes if you want to support the I2C serial bus on ARMs Versatile
- range of platforms.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-versatile.
-
-comment "External I2C/SMBus adapter drivers"
-
-config I2C_PARPORT
- tristate "Parallel port adapter"
- depends on PARPORT
- select I2C_ALGOBIT
- help
- This supports parallel port I2C adapters such as the ones made by
- Philips or Velleman, Analog Devices evaluation boards, and more.
- Basically any adapter using the parallel port as an I2C bus with
- no extra chipset is supported by this driver, or could be.
-
- This driver is a replacement for (and was inspired by) an older
- driver named i2c-philips-par. The new driver supports more devices,
- and makes it easier to add support for new devices.
-
- An adapter type parameter is now mandatory. Please read the file
- Documentation/i2c/busses/i2c-parport for details.
-
- Another driver exists, named i2c-parport-light, which doesn't depend
- on the parport driver. This is meant for embedded systems. Don't say
- Y here if you intend to say Y or M there.
-
- This support is also available as a module. If so, the module
- will be called i2c-parport.
-
-config I2C_PARPORT_LIGHT
- tristate "Parallel port adapter (light)"
- select I2C_ALGOBIT
- help
- This supports parallel port I2C adapters such as the ones made by
- Philips or Velleman, Analog Devices evaluation boards, and more.
- Basically any adapter using the parallel port as an I2C bus with
- no extra chipset is supported by this driver, or could be.
-
- This driver is a light version of i2c-parport. It doesn't depend
- on the parport driver, and uses direct I/O access instead. This
- might be preferred on embedded systems where wasting memory for
- the clean but heavy parport handling is not an option. The
- drawback is a reduced portability and the impossibility to
- daisy-chain other parallel port devices.
-
- Don't say Y here if you said Y or M to i2c-parport. Saying M to
- both is possible but both modules should not be loaded at the same
- time.
-
- This support is also available as a module. If so, the module
- will be called i2c-parport-light.
-
-config I2C_TAOS_EVM
- tristate "TAOS evaluation module"
- depends on EXPERIMENTAL
- select SERIO
- select SERIO_SERPORT
- default n
- help
- This supports TAOS evaluation modules on serial port. In order to
- use this driver, you will need the inputattach tool, which is part
- of the input-utils package.
-
- If unsure, say N.
-
- This support is also available as a module. If so, the module
- will be called i2c-taos-evm.
-
-config I2C_TINY_USB
- tristate "Tiny-USB adapter"
- depends on USB
- help
- If you say yes to this option, support will be included for the
- i2c-tiny-usb, a simple do-it-yourself USB to I2C interface. See
- http://www.harbaum.org/till/i2c_tiny_usb for hardware details.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-tiny-usb.
-
-comment "Graphics adapter I2C/DDC channel drivers"
- depends on PCI
-
-config I2C_VOODOO3
- tristate "Voodoo 3 (DEPRECATED)"
- depends on PCI
- select I2C_ALGOBIT
- help
- If you say yes to this option, support will be included for the
- Voodoo 3 I2C interface. This driver is deprecated and you should
- use the tdfxfb driver instead, which additionally provides
- framebuffer support.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-voodoo3.
-
-comment "Other I2C/SMBus bus drivers"
-
-config I2C_ACORN
- tristate "Acorn IOC/IOMD I2C bus support"
- depends on ARCH_ACORN
+
+config I2C_RK2818
+ tristate "RK2818 i2c interface (I2C)"
+ depends on ARCH_RK2818
default y
- select I2C_ALGOBIT
- help
- Say yes if you want to support the I2C bus on Acorn platforms.
-
- If you don't know, say Y.
-
-config I2C_ELEKTOR
- tristate "Elektor ISA card"
- depends on ISA && BROKEN_ON_SMP
- select I2C_ALGOPCF
- help
- This supports the PCF8584 ISA bus I2C adapter. Say Y if you own
- such an adapter.
-
- This support is also available as a module. If so, the module
- will be called i2c-elektor.
-
-config I2C_PCA_ISA
- tristate "PCA9564/PCA9665 on an ISA bus"
- depends on ISA
- select I2C_ALGOPCA
- default n
- help
- This driver supports ISA boards using the Philips PCA9564/PCA9665
- parallel bus to I2C bus controller.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-pca-isa.
-
- This device is almost undetectable and using this driver on a
- system which doesn't have this device will result in long
- delays when I2C/SMBus chip drivers are loaded (e.g. at boot
- time). If unsure, say N.
-
-config I2C_PCA_PLATFORM
- tristate "PCA9564/PCA9665 as platform device"
- select I2C_ALGOPCA
- default n
- help
- This driver supports a memory mapped Philips PCA9564/PCA9665
- parallel bus to I2C bus controller.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-pca-platform.
-
-config I2C_PMCMSP
- tristate "PMC MSP I2C TWI Controller"
- depends on PMC_MSP
- help
- This driver supports the PMC TWI controller on MSP devices.
-
- This driver can also be built as module. If so, the module
- will be called i2c-pmcmsp.
-
-config I2C_SIBYTE
- tristate "SiByte SMBus interface"
- depends on SIBYTE_SB1xxx_SOC
- help
- Supports the SiByte SOC on-chip I2C interfaces (2 channels).
-
-config I2C_STUB
- tristate "I2C/SMBus Test Stub"
- depends on EXPERIMENTAL && m
- default 'n'
- help
- This module may be useful to developers of SMBus client drivers,
- especially for certain kinds of sensor chips.
-
- If you do build this module, be sure to read the notes and warnings
- in <file:Documentation/i2c/i2c-stub>.
-
- If you don't know what to do here, definitely say N.
-
-config SCx200_I2C
- tristate "NatSemi SCx200 I2C using GPIO pins (DEPRECATED)"
- depends on SCx200_GPIO
- select I2C_ALGOBIT
help
- Enable the use of two GPIO pins of a SCx200 processor as an I2C bus.
-
- If you don't know what to do here, say N.
-
- This support is also available as a module. If so, the module
- will be called scx200_i2c.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- (or scx200_acb) instead.
-
-config SCx200_I2C_SCL
- int "GPIO pin used for SCL"
- depends on SCx200_I2C
- default "12"
- help
- Enter the GPIO pin number used for the SCL signal. This value can
- also be specified with a module parameter.
-
-config SCx200_I2C_SDA
- int "GPIO pin used for SDA"
- depends on SCx200_I2C
- default "13"
- help
- Enter the GPIO pin number used for the SSA signal. This value can
- also be specified with a module parameter.
-
-config SCx200_ACB
- tristate "Geode ACCESS.bus support"
- depends on X86_32 && PCI
+ This supports the use of the I2C interface on rk2818 processors.
+
+if I2C_RK2818
+ comment "Now, there are two I2C interfaces selected by developer."
+
+ config I2C0_RK2818
+ bool "RK2818 I2C0 interface support"
+ default y
+ depends on ARCH_RK2818
+ help
+ This supports the use of the I2C0 interface on rk2818 processors.
+ config I2C1_RK2818
+ bool "RK2818 I2C1 interface support"
+ default y
+ depends on ARCH_RK2818
+ help
+ This supports the use of the I2C1 interface on rk2818 processors.
+endif
+config I2C_RK29
+ tristate "RK29 i2c interface (I2C)"
+ depends on ARCH_RK29
+ default y
help
- Enable the use of the ACCESS.bus controllers on the Geode SCx200 and
- SC1100 processors and the CS5535 and CS5536 Geode companion devices.
-
- If you don't know what to do here, say N.
-
- This support is also available as a module. If so, the module
- will be called scx200_acb.
-
+ This supports the use of the I2C interface(i2c0 ~ i2c3) on rk29 processors.
+
+if I2C_RK29
+ comment "Now, there are four I2C interfaces selected by developer."
+
+ config I2C0_RK29
+ bool "RK29 I2C0 interface support"
+ default y
+ depends on ARCH_RK29
+ help
+ This supports the use of the I2C0 interface on rk29 processors.
+
+ config I2C1_RK29
+ bool "RK29 I2C1 interface support"
+ default y
+ depends on ARCH_RK29
+ help
+ This supports the use of the I2C1 interface on rk29 processors.
+
+ config I2C2_RK29
+ bool "RK29 I2C2 interface support"
+ default y
+ depends on ARCH_RK29
+ help
+ This supports the use of the I2C2 interface on rk29 processors.
+
+ config I2C3_RK29
+ bool "RK29 I2C3 interface support"
+ default y
+ depends on ARCH_RK29 && !UART3_CTS_RTS_RK29
+ help
+ This supports the use of the I2C3 interface on rk29 processors.
+endif
+config I2C_DEV_RK29
+ tristate "RK29 I2C device interface support"
+ default n
+ depends on I2C_RK29
+ help
+ Nothing
endmenu
--- /dev/null
+/*
+ * linux/drivers/net/wireless/libertas/if_sdio.c
+ *
+ * Copyright 2007-2008 Pierre Ossman
+ *
+ * Inspired by if_cs.c, Copyright 2007 Holger Schurig
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This hardware has more or less no CMD53 support, so all registers
+ * must be accessed using sdio_readb()/sdio_writeb().
+ *
+ * Transfers must be in one transaction or the firmware goes bonkers.
+ * This means that the transfer must either be small enough to do a
+ * byte based transfer or it must be padded to a multiple of the
+ * current block size.
+ *
+ * As SDIO is still new to the kernel, it is unfortunately common with
+ * bugs in the host controllers related to that. One such bug is that
+ * controllers cannot do transfers that aren't a multiple of 4 bytes.
+ * If you don't have time to fix the host controller driver, you can
+ * work around the problem by modifying if_sdio_host_to_card() and
+ * if_sdio_card_to_host() to pad the data.
+ */
+
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
++#include <linux/mmc/sdio.h>
+#include <linux/mmc/host.h>
+
+#include "host.h"
+#include "decl.h"
+#include "defs.h"
+#include "dev.h"
+#include "cmd.h"
+#include "if_sdio.h"
+#include "wifi_power.h"
+
+extern struct mmc_host *wifi_mmc_host;
+
+/* The if_sdio_remove() callback function is called when
+ * user removes this module from kernel space or ejects
+ * the card from the slot. The driver handles these 2 cases
+ * differently for SD8688 combo chip.
+ * If the user is removing the module, the FUNC_SHUTDOWN
+ * command for SD8688 is sent to the firmware.
+ * If the card is removed, there is no need to send this command.
+ *
+ * The variable 'user_rmmod' is used to distinguish these two
+ * scenarios. This flag is initialized as FALSE in case the card
+ * is removed, and will be set to TRUE for module removal when
+ * module_exit function is called.
+ */
+static u8 user_rmmod;
+
+struct sdio_func *wifi_sdio_func;
+
+EXPORT_SYMBOL(wifi_sdio_func);
+static char *lbs_helper_name = NULL;
+module_param_named(helper_name, lbs_helper_name, charp, 0644);
+
+static char *lbs_fw_name = NULL;
+module_param_named(fw_name, lbs_fw_name, charp, 0644);
+
+static const struct sdio_device_id if_sdio_ids[] = {
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
+ SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
+ SDIO_DEVICE_ID_MARVELL_8688WLAN) },
+ { /* end: all zeroes */ },
+};
+
+MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
+
+struct if_sdio_model {
+ int model;
+ const char *helper;
+ const char *firmware;
+};
+
+static struct if_sdio_model if_sdio_models[] = {
+ {
+ /* 8385 */
+ .model = IF_SDIO_MODEL_8385,
+ .helper = "sd8385_helper.bin",
+ .firmware = "sd8385.bin",
+ },
+ {
+ /* 8686 */
+ .model = IF_SDIO_MODEL_8686,
+ .helper = "sd8686_helper.bin",
+ .firmware = "sd8686.bin",
+ },
+ {
+ /* 8688 */
+ .model = IF_SDIO_MODEL_8688,
+ .helper = "sd8688_helper.bin",
+ .firmware = "sd8688.bin",
+ },
+};
+
+struct if_sdio_packet {
+ struct if_sdio_packet *next;
+ u16 nb;
+ u8 buffer[0] __attribute__((aligned(4)));
+};
+
+struct if_sdio_card {
+ struct sdio_func *func;
+ struct lbs_private *priv;
+
+ int model;
+ unsigned long ioport;
+ unsigned int scratch_reg;
+
+ const char *helper;
+ const char *firmware;
+
+ u8 buffer[65536];
+
+ spinlock_t lock;
+ struct if_sdio_packet *packets;
+
+ struct workqueue_struct *workqueue;
+ struct work_struct packet_worker;
+
+ u8 rx_unit;
+};
+
+/********************************************************************/
+/* I/O */
+/********************************************************************/
+
+/*
+ * For SD8385/SD8686, this function reads firmware status after
+ * the image is downloaded, or reads RX packet length when
+ * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
+ * For SD8688, this function reads firmware status only.
+ */
+static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
+{
+ int ret;
+ u16 scratch;
+
+ scratch = sdio_readb(card->func, card->scratch_reg, &ret);
+ if (!ret)
+ scratch |= sdio_readb(card->func, card->scratch_reg + 1,
+ &ret) << 8;
+
+ if (err)
+ *err = ret;
+
+ if (ret)
+ return 0xffff;
+
+ return scratch;
+}
+
+static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
+{
+ int ret;
+ u8 rx_unit;
+
+ rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
+
+ if (ret)
+ rx_unit = 0;
+
+ return rx_unit;
+}
+
+static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
+{
+ int ret;
+ u16 rx_len;
+
+ switch (card->model) {
+ case IF_SDIO_MODEL_8385:
+ case IF_SDIO_MODEL_8686:
+ rx_len = if_sdio_read_scratch(card, &ret);
+ break;
+ case IF_SDIO_MODEL_8688:
+ default: /* for newer chipsets */
+ rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
+ if (!ret)
+ rx_len <<= card->rx_unit;
+ else
+ rx_len = 0xffff; /* invalid length */
+
+ break;
+ }
+
+ if (err)
+ *err = ret;
+
+ return rx_len;
+}
+
+static int if_sdio_handle_cmd(struct if_sdio_card *card,
+ u8 *buffer, unsigned size)
+{
+ struct lbs_private *priv = card->priv;
+ int ret;
+ unsigned long flags;
+ u8 i;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ if (size > LBS_CMD_BUFFER_SIZE) {
+ lbs_deb_sdio("response packet too large (%d bytes)\n",
+ (int)size);
+ ret = -E2BIG;
+ goto out;
+ }
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ i = (priv->resp_idx == 0) ? 1 : 0;
+ BUG_ON(priv->resp_len[i]);
+ priv->resp_len[i] = size;
+ memcpy(priv->resp_buf[i], buffer, size);
+ lbs_notify_command_response(priv, i);
+
+ spin_unlock_irqrestore(&card->priv->driver_lock, flags);
+
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+ return ret;
+}
+
+static int if_sdio_handle_data(struct if_sdio_card *card,
+ u8 *buffer, unsigned size)
+{
+ int ret;
+ struct sk_buff *skb;
+ char *data;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
+ lbs_deb_sdio("response packet too large (%d bytes)\n",
+ (int)size);
+ ret = -E2BIG;
+ goto out;
+ }
+
+ skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ skb_reserve(skb, NET_IP_ALIGN);
+
+ data = skb_put(skb, size);
+
+ memcpy(data, buffer, size);
+
+ lbs_process_rxed_packet(card->priv, skb);
+
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+static int if_sdio_handle_event(struct if_sdio_card *card,
+ u8 *buffer, unsigned size)
+{
+ int ret;
+ u32 event;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ if (card->model == IF_SDIO_MODEL_8385) {
+ event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
+ if (ret)
+ goto out;
+
+ /* right shift 3 bits to get the event id */
+ event >>= 3;
+ } else {
+ if (size < 4) {
+ lbs_deb_sdio("event packet too small (%d bytes)\n",
+ (int)size);
+ ret = -EINVAL;
+ goto out;
+ }
+ event = buffer[3] << 24;
+ event |= buffer[2] << 16;
+ event |= buffer[1] << 8;
+ event |= buffer[0] << 0;
+ }
+
+ lbs_queue_event(card->priv, event & 0xFF);
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+static int if_sdio_card_to_host(struct if_sdio_card *card)
+{
+ int ret;
+ u8 status;
+ u16 size, type, chunk;
+ unsigned long timeout;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ size = if_sdio_read_rx_len(card, &ret);
+ if (ret)
+ goto out;
+
+ if (size < 4) {
+ lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
+ (int)size);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ timeout = jiffies + HZ;
+ while (1) {
+ status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
+ if (ret)
+ goto out;
+ if (status & IF_SDIO_IO_RDY)
+ break;
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto out;
+ }
+ mdelay(1);
+ }
+
+ /*
+ * The transfer must be in one transaction or the firmware
+ * goes suicidal. There's no way to guarantee that for all
+ * controllers, but we can at least try.
+ */
+ chunk = sdio_align_size(card->func, size);
+
+ ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
+ if (ret)
+ goto out;
+
+ chunk = card->buffer[0] | (card->buffer[1] << 8);
+ type = card->buffer[2] | (card->buffer[3] << 8);
+
+ lbs_deb_sdio("packet of type %d and size %d bytes\n",
+ (int)type, (int)chunk);
+
+ if (chunk > size) {
+ lbs_deb_sdio("packet fragment (%d > %d)\n",
+ (int)chunk, (int)size);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (chunk < size) {
+ lbs_deb_sdio("packet fragment (%d < %d)\n",
+ (int)chunk, (int)size);
+ }
+
+ switch (type) {
+ case MVMS_CMD:
+ ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
+ if (ret)
+ goto out;
+ break;
+ case MVMS_DAT:
+ ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
+ if (ret)
+ goto out;
+ break;
+ case MVMS_EVENT:
+ ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
+ if (ret)
+ goto out;
+ break;
+ default:
+ lbs_deb_sdio("invalid type (%d) from firmware\n",
+ (int)type);
+ ret = -EINVAL;
+ goto out;
+ }
+
+out:
+ if (ret)
+ lbs_pr_err("problem fetching packet from firmware\n");
+
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+static void if_sdio_host_to_card_worker(struct work_struct *work)
+{
+ struct if_sdio_card *card;
+ struct if_sdio_packet *packet;
+ unsigned long timeout;
+ u8 status;
+ int ret;
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ card = container_of(work, struct if_sdio_card, packet_worker);
+
+ while (1) {
+ spin_lock_irqsave(&card->lock, flags);
+ packet = card->packets;
+ if (packet)
+ card->packets = packet->next;
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ if (!packet)
+ break;
+
+ sdio_claim_host(card->func);
+
+ timeout = jiffies + HZ;
+ while (1) {
+ status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
+ if (ret)
+ goto release;
+ if (status & IF_SDIO_IO_RDY)
+ break;
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto release;
+ }
+ mdelay(1);
+ }
+
+ ret = sdio_writesb(card->func, card->ioport,
+ packet->buffer, packet->nb);
+ if (ret)
+ goto release;
+release:
+ sdio_release_host(card->func);
+
+ kfree(packet);
+ }
+
+ lbs_deb_leave(LBS_DEB_SDIO);
+}
+
+/********************************************************************/
+/* Firmware */
+/********************************************************************/
+
+static int if_sdio_prog_helper(struct if_sdio_card *card)
+{
+ int ret;
+ u8 status;
+ const struct firmware *fw;
+ unsigned long timeout;
+ u8 *chunk_buffer;
+ u32 chunk_size;
+ const u8 *firmware;
+ size_t size;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ ret = request_firmware(&fw, card->helper, &card->func->dev);
+ if (ret) {
+ lbs_pr_err("can't load helper firmware\n");
+ goto out;
+ }
+
+ chunk_buffer = kzalloc(64, GFP_KERNEL);
+ if (!chunk_buffer) {
+ ret = -ENOMEM;
+ goto release_fw;
+ }
+
+ sdio_claim_host(card->func);
+
+ ret = sdio_set_block_size(card->func, 32);
+ if (ret)
+ goto release;
+
+ firmware = fw->data;
+ size = fw->size;
+
+ while (size) {
+ timeout = jiffies + HZ;
+ while (1) {
+ status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
+ if (ret)
+ goto release;
+ if ((status & IF_SDIO_IO_RDY) &&
+ (status & IF_SDIO_DL_RDY))
+ break;
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto release;
+ }
+ mdelay(1);
+ }
+
+ chunk_size = min(size, (size_t)60);
+
+ *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
+ memcpy(chunk_buffer + 4, firmware, chunk_size);
+/*
+ lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
+*/
+ ret = sdio_writesb(card->func, card->ioport,
+ chunk_buffer, 64);
+ if (ret)
+ goto release;
+
+ firmware += chunk_size;
+ size -= chunk_size;
+ }
+
+ /* an empty block marks the end of the transfer */
+ memset(chunk_buffer, 0, 4);
+ ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
+ if (ret)
+ goto release;
+
+ //lbs_deb_sdio("waiting for helper to boot...\n");
+ printk("waiting for helper to boot...\n");
+ mdelay(3000);
+
+ /* wait for the helper to boot by looking at the size register */
+ timeout = jiffies + HZ;
+ while (1) {
+ u16 req_size;
+
+ req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
+ if (ret)
+ goto release;
+
+ req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
+ if (ret)
+ goto release;
+
+ if (req_size != 0)
+ break;
+
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto release;
+ }
+
+ msleep(10);
+ }
+
+ ret = 0;
+
+release:
+ sdio_release_host(card->func);
+ kfree(chunk_buffer);
+release_fw:
+ release_firmware(fw);
+
+out:
+ if (ret)
+ //lbs_pr_err("failed to load helper firmware\n");
+ printk("failed to load helper firmware\n");
+ else
+ printk("succeed to load helper firmware\n");
+
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+static int if_sdio_prog_real(struct if_sdio_card *card)
+{
+ int ret;
+ u8 status;
+ const struct firmware *fw;
+ unsigned long timeout;
+ u8 *chunk_buffer;
+ u32 chunk_size;
+ const u8 *firmware;
+ size_t size, req_size;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ ret = request_firmware(&fw, card->firmware, &card->func->dev);
+ if (ret) {
+ lbs_pr_err("can't load firmware\n");
+ goto out;
+ }
+
+ chunk_buffer = kzalloc(512, GFP_KERNEL);
+ if (!chunk_buffer) {
+ ret = -ENOMEM;
+ goto release_fw;
+ }
+
+ sdio_claim_host(card->func);
+
+ ret = sdio_set_block_size(card->func, 32);
+ if (ret)
+ goto release;
+
+ firmware = fw->data;
+ size = fw->size;
+
+ while (size) {
+ timeout = jiffies + HZ;
+ while (1) {
+ status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
+ if (ret)
+ goto release;
+ if ((status & IF_SDIO_IO_RDY) &&
+ (status & IF_SDIO_DL_RDY))
+ break;
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto release;
+ }
+ mdelay(1);
+ }
+
+ req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
+ if (ret)
+ goto release;
+
+ req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
+ if (ret)
+ goto release;
+/*
+ lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
+*/
+ if (req_size == 0) {
+ lbs_deb_sdio("firmware helper gave up early\n");
+ ret = -EIO;
+ goto release;
+ }
+
+ if (req_size & 0x01) {
+ lbs_deb_sdio("firmware helper signalled error\n");
+ ret = -EIO;
+ goto release;
+ }
+
+ if (req_size > size)
+ req_size = size;
+
+ while (req_size) {
+ chunk_size = min(req_size, (size_t)512);
+
+ memcpy(chunk_buffer, firmware, chunk_size);
+/*
+ lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
+ chunk_size, (chunk_size + 31) / 32 * 32);
+*/
+ ret = sdio_writesb(card->func, card->ioport,
+ chunk_buffer, roundup(chunk_size, 32));
+ if (ret)
+ goto release;
+
+ firmware += chunk_size;
+ size -= chunk_size;
+ req_size -= chunk_size;
+ }
+ }
+
+ ret = 0;
+
+ lbs_deb_sdio("waiting for firmware to boot...\n");
+
+ /* wait for the firmware to boot */
+ timeout = jiffies + HZ;
+ while (1) {
+ u16 scratch;
+
+ scratch = if_sdio_read_scratch(card, &ret);
+ if (ret)
+ goto release;
+
+ if (scratch == IF_SDIO_FIRMWARE_OK)
+ break;
+
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ goto release;
+ }
+
+ msleep(10);
+ }
+
+ ret = 0;
+
+release:
+ sdio_release_host(card->func);
+ kfree(chunk_buffer);
+release_fw:
+ release_firmware(fw);
+
+out:
+ if (ret)
+ lbs_pr_err("failed to load firmware\n");
+
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+static int if_sdio_prog_firmware(struct if_sdio_card *card)
+{
+ int ret;
+ u16 scratch;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ sdio_claim_host(card->func);
+ scratch = if_sdio_read_scratch(card, &ret);
+ sdio_release_host(card->func);
+
+ if (ret)
+ goto out;
+
+ lbs_deb_sdio("firmware status = %#x\n", scratch);
+
+ if (scratch == IF_SDIO_FIRMWARE_OK) {
+ lbs_deb_sdio("firmware already loaded\n");
+ goto success;
+ }
+
+ ret = if_sdio_prog_helper(card);
+ if (ret)
+ goto out;
+
+ ret = if_sdio_prog_real(card);
+ if (ret)
+ goto out;
+
+success:
+ sdio_claim_host(card->func);
+ sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
+ sdio_release_host(card->func);
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+/*******************************************************************/
+/* Libertas callbacks */
+/*******************************************************************/
+
+static int if_sdio_host_to_card(struct lbs_private *priv,
+ u8 type, u8 *buf, u16 nb)
+{
+ int ret;
+ struct if_sdio_card *card;
+ struct if_sdio_packet *packet, *cur;
+ u16 size;
+ unsigned long flags;
+
+ lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
+
+ card = priv->card;
+
+ if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * The transfer must be in one transaction or the firmware
+ * goes suicidal. There's no way to guarantee that for all
+ * controllers, but we can at least try.
+ */
+ size = sdio_align_size(card->func, nb + 4);
+
+ packet = kzalloc(sizeof(struct if_sdio_packet) + size,
+ GFP_ATOMIC);
+ if (!packet) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ packet->next = NULL;
+ packet->nb = size;
+
+ /*
+ * SDIO specific header.
+ */
+ packet->buffer[0] = (nb + 4) & 0xff;
+ packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
+ packet->buffer[2] = type;
+ packet->buffer[3] = 0;
+
+ memcpy(packet->buffer + 4, buf, nb);
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ if (!card->packets)
+ card->packets = packet;
+ else {
+ cur = card->packets;
+ while (cur->next)
+ cur = cur->next;
+ cur->next = packet;
+ }
+
+ switch (type) {
+ case MVMS_CMD:
+ priv->dnld_sent = DNLD_CMD_SENT;
+ break;
+ case MVMS_DAT:
+ priv->dnld_sent = DNLD_DATA_SENT;
+ break;
+ default:
+ lbs_deb_sdio("unknown packet type %d\n", (int)type);
+ }
+
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ queue_work(card->workqueue, &card->packet_worker);
+
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+}
+
+/*******************************************************************/
+/* SDIO callbacks */
+/*******************************************************************/
+
+static void if_sdio_interrupt(struct sdio_func *func)
+{
+ int ret;
+ struct if_sdio_card *card;
+ u8 cause;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ card = sdio_get_drvdata(func);
+
+ cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
+ if (ret)
+ goto out;
+
+ lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
+
+ sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
+ if (ret)
+ goto out;
+
+ /*
+ * Ignore the define name, this really means the card has
+ * successfully received the command.
+ */
+ if (cause & IF_SDIO_H_INT_DNLD)
+ lbs_host_to_card_done(card->priv);
+
+
+ if (cause & IF_SDIO_H_INT_UPLD) {
+ ret = if_sdio_card_to_host(card);
+ if (ret)
+ goto out;
+ }
+
+ ret = 0;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+}
+
+static int if_sdio_probe(struct sdio_func *func,
+ const struct sdio_device_id *id)
+{
+ struct if_sdio_card *card;
+ struct lbs_private *priv;
+ int ret, i;
+ unsigned int model;
+ struct if_sdio_packet *packet;
++ struct mmc_host *host = func->card->host;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ for (i = 0;i < func->card->num_info;i++) {
+ if (sscanf(func->card->info[i],
+ "802.11 SDIO ID: %x", &model) == 1)
+ break;
+ if (sscanf(func->card->info[i],
+ "ID: %x", &model) == 1)
+ break;
+ if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
+ model = IF_SDIO_MODEL_8385;
+ break;
+ }
+ }
+
+ if (i == func->card->num_info) {
+ lbs_pr_err("unable to identify card model\n");
+ return -ENODEV;
+ }
+
+ card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ card->func = func;
+ card->model = model;
+
+ switch (card->model) {
+ case IF_SDIO_MODEL_8385:
+ card->scratch_reg = IF_SDIO_SCRATCH_OLD;
+ break;
+ case IF_SDIO_MODEL_8686:
+ card->scratch_reg = IF_SDIO_SCRATCH;
+ break;
+ case IF_SDIO_MODEL_8688:
+ default: /* for newer chipsets */
+ card->scratch_reg = IF_SDIO_FW_STATUS;
+ break;
+ }
+
+ spin_lock_init(&card->lock);
+ card->workqueue = create_workqueue("libertas_sdio");
+ INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
+
+ for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
+ if (card->model == if_sdio_models[i].model)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(if_sdio_models)) {
+ lbs_pr_err("unkown card model 0x%x\n", card->model);
+ ret = -ENODEV;
+ goto free;
+ }
+
+ card->helper = if_sdio_models[i].helper;
+ card->firmware = if_sdio_models[i].firmware;
+
+ if (lbs_helper_name) {
+ lbs_deb_sdio("overriding helper firmware: %s\n",
+ lbs_helper_name);
+ card->helper = lbs_helper_name;
+ }
+
+ if (lbs_fw_name) {
+ lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
+ card->firmware = lbs_fw_name;
+ }
+
+ sdio_claim_host(func);
+
+ ret = sdio_enable_func(func);
+ if (ret)
+ goto release;
+
+ ret = sdio_claim_irq(func, if_sdio_interrupt);
+ if (ret)
+ goto disable;
+
++ /* For 1-bit transfers to the 8686 model, we need to enable the
++ * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0
++ * bit to allow access to non-vendor registers. */
++ if ((card->model == IF_SDIO_MODEL_8686) &&
++ (host->caps & MMC_CAP_SDIO_IRQ) &&
++ (host->ios.bus_width == MMC_BUS_WIDTH_1)) {
++ u8 reg;
++
++ func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
++ reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret);
++ if (ret)
++ goto release_int;
++
++ reg |= SDIO_BUS_ECSI;
++ sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret);
++ if (ret)
++ goto release_int;
++ }
++
+ card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
+ if (ret)
+ goto release_int;
+
+ card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
+ if (ret)
+ goto release_int;
+
+ card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
+ if (ret)
+ goto release_int;
+
+ sdio_release_host(func);
+
+ sdio_set_drvdata(func, card);
+
+ lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
+ "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
+ func->class, func->vendor, func->device,
+ model, (unsigned)card->ioport);
+
+ ret = if_sdio_prog_firmware(card);
+ if (ret)
+ goto reclaim;
+
+ priv = lbs_add_card(card, &func->dev);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto reclaim;
+ }
+
+ card->priv = priv;
+
+ priv->card = card;
+ priv->hw_host_to_card = if_sdio_host_to_card;
+
+ priv->fw_ready = 1;
+
+ sdio_claim_host(func);
+
+ /*
+ * Get rx_unit if the chip is SD8688 or newer.
+ * SD8385 & SD8686 do not have rx_unit.
+ */
+ if ((card->model != IF_SDIO_MODEL_8385)
+ && (card->model != IF_SDIO_MODEL_8686))
+ card->rx_unit = if_sdio_read_rx_unit(card);
+ else
+ card->rx_unit = 0;
+
+ /*
+ * Enable interrupts now that everything is set up
+ */
+ sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
+ sdio_release_host(func);
+ if (ret)
+ goto reclaim;
+
+ /*
+ * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
+ */
+ if (card->model == IF_SDIO_MODEL_8688) {
+ struct cmd_header cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+
+ lbs_deb_sdio("send function INIT command\n");
+ if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
+ lbs_cmd_copyback, (unsigned long) &cmd))
+ lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
+ }
+
+ ret = lbs_start_card(priv);
+ if (ret)
+ goto err_activate_card;
+
+ wifi_sdio_func = func;
+
+out:
+ lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ return ret;
+
+err_activate_card:
+ flush_workqueue(card->workqueue);
+ lbs_remove_card(priv);
+reclaim:
+ sdio_claim_host(func);
+release_int:
+ sdio_release_irq(func);
+disable:
+ sdio_disable_func(func);
+release:
+ sdio_release_host(func);
+free:
+ destroy_workqueue(card->workqueue);
+ while (card->packets) {
+ packet = card->packets;
+ card->packets = card->packets->next;
+ kfree(packet);
+ }
+
+ kfree(card);
+
+ goto out;
+}
+
+static void if_sdio_remove(struct sdio_func *func)
+{
+ struct if_sdio_card *card;
+ struct if_sdio_packet *packet;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ card = sdio_get_drvdata(func);
+
+ if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
+ /*
+ * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
+ * multiple functions
+ */
+ struct cmd_header cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+
+ lbs_deb_sdio("send function SHUTDOWN command\n");
+ if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
+ &cmd, sizeof(cmd), lbs_cmd_copyback,
+ (unsigned long) &cmd))
+ lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
+ }
+
+
+ lbs_deb_sdio("call remove card\n");
+ lbs_stop_card(card->priv);
+ lbs_remove_card(card->priv);
+ card->priv->surpriseremoved = 1;
+
+ flush_workqueue(card->workqueue);
+ destroy_workqueue(card->workqueue);
+
+ sdio_claim_host(func);
+ sdio_release_irq(func);
+ sdio_disable_func(func);
+ sdio_release_host(func);
+
+ while (card->packets) {
+ packet = card->packets;
+ card->packets = card->packets->next;
+ kfree(packet);
+ }
+
+ kfree(card);
+
+ lbs_deb_leave(LBS_DEB_SDIO);
+}
+
+static struct sdio_driver if_sdio_driver = {
+ .name = "libertas_sdio",
+ .id_table = if_sdio_ids,
+ .probe = if_sdio_probe,
+ .remove = if_sdio_remove,
+};
+
+/*******************************************************************/
+/* Module functions */
+/*******************************************************************/
+
+//static int __init if_sdio_init_module2(void)
+//void if_sdio_init_module2(struct work_struct *work)
+int wifi_no_power_gpio = 0; /* 0-No 1-Yes */
+void if_sdio_init_module2(void)
+{
+ int ret = 0,timeout;
+
+ wifi_sdio_func = NULL;
+ wifi_no_power_gpio = 0;
+
+ //lbs_deb_enter(LBS_DEB_SDIO);
+
+ printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
+ printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
+
+ /* Clear the flag in case user removes the card. */
+ user_rmmod = 0;
+ ///lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
+
+ ret = sdio_register_driver(&if_sdio_driver);
+
+#ifdef WIFI_GPIO_POWER_CONTROL
+ if (wifi_mmc_host->bus_ops != NULL) /* mmc/card is attached already. */
+ {
+ printk("SDIO maybe be attached already.\n");
+ wifi_no_power_gpio = 1;
+ return ;
+ }
+
+ wifi_turn_on_card();
+ wifi_power_up_wifi();
+
+ mmc_detect_change(wifi_mmc_host, 2);
+
+ for (timeout = 100; timeout >=0; timeout--)
+ {
+ if (wifi_sdio_func != NULL)
+ break;
+ msleep(50);
+ }
+ if (timeout <= 0)
+ printk("No WiFi function card has been attached.\n");
+#endif
+ return ;
+}
+EXPORT_SYMBOL(if_sdio_init_module2);
+
+#if 0
+static int __init if_sdio_init_module(void)
+{
+ struct delayed_work hook_worker;
+
+ INIT_DELAYED_WORK(&hook_worker, if_sdio_init_module2);
+
+ schedule_delayed_work(&hook_worker, msecs_to_jiffies(9000));
+
+ return 0;
+}
+#endif
+
+
+void if_sdio_exit_module(void)
+{
+ int timeout;
+
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ /* Set the flag as user is removing this module. */
+ user_rmmod = 1;
+
+ sdio_unregister_driver(&if_sdio_driver);
+
+#ifdef WIFI_GPIO_POWER_CONTROL
+
+ if (wifi_no_power_gpio == 1)
+ return;
+
+ if (wifi_mmc_host == NULL)
+ {
+ printk("No SDIO host is present.\n");
+ return;
+ }
+
+ wifi_power_down_wifi();
+ wifi_turn_off_card();
+
+ mmc_detect_change(wifi_mmc_host, 2);
+
+ for (timeout = 50; timeout >= 0; timeout--)
+ {
+ msleep(100);
+ if (wifi_mmc_host->bus_ops == NULL)
+ break;
+ }
+ if (timeout < 0)
+ printk("Fail to release SDIO card.\n");
+#endif
+ lbs_deb_leave(LBS_DEB_SDIO);
+}
+EXPORT_SYMBOL(if_sdio_exit_module);
+//module_init(if_sdio_init_module);
+//module_exit(if_sdio_exit_module);
+
+MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
+MODULE_AUTHOR("Pierre Ossman");
+MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff