OpenCloudOS-Kernel/drivers/bcma
Linus Walleij a080ecb11a bcma: gpio: Use irqchip template
This makes the driver use the irqchip template to assign
properties to the gpio_irq_chip instead of using the
explicit call to gpiochip_irqchip_add().

The irqchip is instead added while adding the gpiochip.

Cc: Rafał Miłecki <rafal@milecki.pl>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200722111725.210923-1-linus.walleij@linaro.org
2020-08-02 18:26:51 +03:00
..
Kconfig bcma: Allow selection of this driver when COMPILE_TEST=y 2018-07-18 09:34:19 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
README bcma: add Broadcom specific AMBA bus driver 2011-05-10 15:54:54 -04:00
TODO bcma: add Broadcom specific AMBA bus driver 2011-05-10 15:54:54 -04:00
bcma_private.h bcma: use dev_* printing functions 2019-01-10 13:39:19 +02:00
core.c bcma: update core (en|dis)abling functions 2013-06-17 14:38:53 -04:00
driver_chipcommon.c Revert "bcma: init serial console directly from ChipCommon code" 2017-01-17 14:23:44 +02:00
driver_chipcommon_b.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
driver_chipcommon_nflash.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2013-02-14 14:23:33 -05:00
driver_chipcommon_pflash.c bcma: move parallel flash support to separated file 2016-03-07 14:41:08 +02:00
driver_chipcommon_pmu.c bcma: fix block comment style 2019-10-24 08:45:31 +03:00
driver_chipcommon_sflash.c mtd: bcm47xxsflash: use ioremap_cache() instead of KSEG0ADDR() 2016-04-04 00:07:57 -07:00
driver_gmac_cmn.c Drivers: bcma: remove __dev* attributes. 2013-01-03 15:57:15 -08:00
driver_gpio.c bcma: gpio: Use irqchip template 2020-08-02 18:26:51 +03:00
driver_mips.c bcma: remove two unused variables 2019-09-03 16:37:53 +03:00
driver_pci.c bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA 2019-09-03 16:44:02 +03:00
driver_pci_host.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
driver_pcie2.c bcma: Adjust block comment 2017-12-07 15:33:02 +02:00
host_pci.c bcma: Use dev_get_drvdata 2019-08-06 15:25:28 +03:00
host_soc.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
main.c bcma: keep a direct pointer to the struct device 2019-01-10 13:39:18 +02:00
scan.c drivers: bcma: remove set but not used variable `addrh` and `sizeh` 2020-08-02 18:26:18 +03:00
scan.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sprom.c bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size 2019-09-13 16:44:49 +03:00

README

Broadcom introduced new bus as replacement for older SSB. It is based on AMBA,
however from programming point of view there is nothing AMBA specific we use.

Standard AMBA drivers are platform specific, have hardcoded addresses and use
AMBA standard fields like CID and PID.

In case of Broadcom's cards every device consists of:
1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated
   as standard AMBA device. Reading it's CID or PID can cause machine lockup.
2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID)
   and PIDs (0x103BB369), but we do not use that info for anything. One of that
   devices is used for managing Broadcom specific core.

Addresses of AMBA devices are not hardcoded in driver and have to be read from
EPROM.

In this situation we decided to introduce separated bus. It can contain up to
16 devices identified by Broadcom specific fields: manufacturer, id, revision
and class.