target/linux/ath79/patches-5.15/920-mikrotik-rb4xx.patch

   1 From: Christopher Hill <ch6574@gmail.com>
   2 Subject: [PATCH] ath79: add Mikrotik rb4xx series drivers
   3
   4 This adds 3 Mikrotik rb4xx series drivers as follows:
   5
   6 rb4xx-cpld: This is in the mfd subsystem, and is the parent CPLD device
   7 that interfaces between the SoC SPI bus and its two children below.
   8 rb4xx-gpio: This is the GPIO expander.
   9 rb4xx-nand: This is the NAND driver.
  10
  11 The history of this code comes in three phases.
  12
  13 1. The first is a May 2015 attempt to push the equivalient ar71xx rb4xx
  14 drivers upstream. See https://lore.kernel.org/patchwork/patch/940880/.
  15
  16 Module-author: Gabor Juhos <juhosg@openwrt.org>
  17 Module-author: Imre Kaloz <kaloz@openwrt.org>
  18 Module-author: Bert Vermeulen <bert@biot.com>
  19
  20 2. Next several ar71xx patches were applied bringing the code current.
  21
  22 commit 7bbf4117c6fe4b764d9d7c62fb2bcf6dd93bff2c
  23 Submitted-by: Hauke Mehrtens <hauke@hauke-m.de>
  24
  25 commit af79fdbe4af32a287798b579141204bda056b8aa
  26 commit 889272d92db689fd9c910243635e44c9d8323095
  27 commit e21cb649a235180563363b8af5ba8296b9ac0baa
  28 commit 7c09fa4a7492ca436f2c94bd9a465b7c5bbeed6f
  29 Submitted-by: Felix Fietkau <nbd@nbd.name>
  30
  31 3. Finally a heavy refactor to split the driver into the three new
  32 subsystems, and updated to work with the device tree configuration, plus
  33 updates and review feedback incorporated
  34
  35 Reviewed-by: Thibaut VARÈNE <hacks@slashdirt.org>
  36 Submitted-by: Christopher Hill <ch6574@gmail.com>
  37 ---
  38  drivers/mfd/Kconfig                           | 8 ++++++++
  39  drivers/mfd/Makefile                          | 1 +
  40  drivers/gpio/Kconfig                          | 6 ++++++
  41  drivers/gpio/Makefile                         | 1 +
  42  drivers/mtd/nand/raw/Kconfig                  | 7 +++++++
  43  drivers/mtd/nand/raw/Makefile                 | 1 +
  44  6 files changed, 24 insertions(+)
  45
  46 --- a/drivers/mfd/Kconfig
  47 +++ b/drivers/mfd/Kconfig
  48 @@ -2176,6 +2176,14 @@ config RAVE_SP_CORE
  49           Select this to get support for the Supervisory Processor
  50           device found on several devices in RAVE line of hardware.
  51
  52 +config MFD_RB4XX_CPLD
  53 +       tristate "CPLD driver for Mikrotik RB4xx series boards"
  54 +       select MFD_CORE
  55 +       depends on ATH79 || COMPILE_TEST
  56 +       help
  57 +         Enables support for the CPLD chip (NAND & GPIO) on Mikrotik
  58 +         Routerboard RB4xx series.
  59 +
  60  config SGI_MFD_IOC3
  61         bool "SGI IOC3 core driver"
  62         depends on PCI && MIPS && 64BIT
  63 --- a/drivers/mfd/Makefile
  64 +++ b/drivers/mfd/Makefile
  65 @@ -267,6 +267,7 @@ obj-$(CONFIG_MFD_KHADAS_MCU)        += khadas-
  66  obj-$(CONFIG_MFD_ACER_A500_EC) += acer-ec-a500.o
  67  obj-$(CONFIG_MFD_QCOM_PM8008)  += qcom-pm8008.o
  68
  69 +obj-$(CONFIG_MFD_RB4XX_CPLD)   += rb4xx-cpld.o
  70  obj-$(CONFIG_SGI_MFD_IOC3)     += ioc3.o
  71  obj-$(CONFIG_MFD_SIMPLE_MFD_I2C)       += simple-mfd-i2c.o
  72  obj-$(CONFIG_MFD_INTEL_M10_BMC)   += intel-m10-bmc.o
  73 --- a/drivers/gpio/Kconfig
  74 +++ b/drivers/gpio/Kconfig
  75 @@ -1574,6 +1574,12 @@ config GPIO_SODAVILLE
  76         help
  77           Say Y here to support Intel Sodaville GPIO.
  78
  79 +config GPIO_RB4XX
  80 +       tristate "GPIO expander for Mikrotik RB4xx series boards"
  81 +       depends on MFD_RB4XX_CPLD
  82 +       help
  83 +         GPIO driver for Mikrotik Routerboard RB4xx series.
  84 +
  85  endmenu
  86
  87  menu "SPI GPIO expanders"
  88 --- a/drivers/gpio/Makefile
  89 +++ b/drivers/gpio/Makefile
  90 @@ -122,6 +122,7 @@ obj-$(CONFIG_GPIO_PL061)            += gpio-pl061.
  91  obj-$(CONFIG_GPIO_PMIC_EIC_SPRD)       += gpio-pmic-eic-sprd.o
  92  obj-$(CONFIG_GPIO_PXA)                 += gpio-pxa.o
  93  obj-$(CONFIG_GPIO_RASPBERRYPI_EXP)     += gpio-raspberrypi-exp.o
  94 +obj-$(CONFIG_GPIO_RB4XX)               += gpio-rb4xx.o
  95  obj-$(CONFIG_GPIO_RC5T583)             += gpio-rc5t583.o
  96  obj-$(CONFIG_GPIO_RCAR)                        += gpio-rcar.o
  97  obj-$(CONFIG_GPIO_RDA)                 += gpio-rda.o
  98 --- a/drivers/mtd/nand/raw/Kconfig
  99 +++ b/drivers/mtd/nand/raw/Kconfig
 100 @@ -563,4 +563,11 @@ config MTD_NAND_AR934X
 101           Enables support for NAND controller on Qualcomm Atheros SoCs.
 102           This controller is found on AR934x and QCA955x SoCs.
 103
 104 +config MTD_NAND_RB4XX
 105 +       tristate "Support for NAND driver for Mikrotik RB4xx series boards"
 106 +       depends on MFD_RB4XX_CPLD
 107 +       help
 108 +         Enables support for the NAND flash chip on Mikrotik Routerboard
 109 +         RB4xx series.
 110 +
 111  endif # MTD_RAW_NAND
 112 --- a/drivers/mtd/nand/raw/Makefile
 113 +++ b/drivers/mtd/nand/raw/Makefile
 114 @@ -59,6 +59,7 @@ obj-$(CONFIG_MTD_NAND_INTEL_LGM)      += inte
 115  obj-$(CONFIG_MTD_NAND_ROCKCHIP)                += rockchip-nand-controller.o
 116  obj-$(CONFIG_MTD_NAND_PL35X)           += pl35x-nand-controller.o
 117  obj-$(CONFIG_MTD_NAND_AR934X)          += ar934x_nand.o
 118 +obj-$(CONFIG_MTD_NAND_RB4XX)           += nand_rb4xx.o
 119
 120  nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
 121  nand-objs += nand_onfi.o