starfive-tech/linux.git/drivers/tty, branch VF2_v3.4.5

uart: 8250: Add dw auto flow ctrl support

2023-06-25T02:04:02+00:00

Add designeware 8250 auto flow ctrl support. Enable it by add auto-flow-control in dts. Signed-off-by: Minda Chen

serial: 8250_dw: Support a list of reset

2022-06-08T11:30:21+00:00

Change devm_reset_control_get_optional_exclusive API to devm_reset_control_array_get_exclusive, in order to support a list of reset. Signed-off-by: yanhong.wang

Merge tag 'tty-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2021-10-18T03:06:31+00:00

Pull serial driver fix from Greg KH: "Here is a single 8250 Kconfig fix for 5.15-rc6 that resolves a regression that showed up in 5.15-rc1. It has been in linux-next for a while with no reported issues" * tag 'tty-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial: 8250: allow disabling of Freescale 16550 compile test

Merge tag 'for-linus-5.15b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2021-10-08T19:55:23+00:00

Pull xen fixes from Juergen Gross: - fix two minor issues in the Xen privcmd driver plus a cleanup patch for that driver - fix multiple issues related to running as PVH guest and some related earlyprintk fixes for other Xen guest types - fix an issue introduced in 5.15 the Xen balloon driver * tag 'for-linus-5.15b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/balloon: fix cancelled balloon action xen/x86: adjust data placement x86/PVH: adjust function/data placement xen/x86: hook up xen_banner() also for PVH xen/x86: generalize preferred console model from PV to PVH Dom0 xen/x86: make "earlyprintk=xen" work for HVM/PVH DomU xen/x86: allow "earlyprintk=xen" to work for PV Dom0 xen/x86: make "earlyprintk=xen" work better for PVH Dom0 xen/x86: allow PVH Dom0 without XEN_PV=y xen/x86: prevent PVH type from getting clobbered xen/privcmd: drop "pages" parameter from xen_remap_pfn() xen/privcmd: fix error handling in mmap-resource processing xen/privcmd: replace kcalloc() by kvcalloc() when allocating empty pages

serial: 8250: allow disabling of Freescale 16550 compile test

2021-10-05T13:07:44+00:00

The SERIAL_8250_FSL option is used to enable a workaround for a break-detection erratum for Freescale 16550 UARTs in the 8250 driver and is currently also used to enable support for ACPI enumeration. It is enabled on PPC, ARM and ARM64 whenever 8250 console support is enabled (since the quirk is needed for sysrq handling). Commit b1442c55ce89 ("serial: 8250: extend compile-test coverage") enabled compile testing of the code in question but did not provide a means to disable the option when COMPILE_TEST is enabled. Add a conditional input prompt instead so that SERIAL_8250_FSL is no longer enabled by default when compile testing while continuing to always enable the quirk for platforms that may need it. Fixes: b1442c55ce89 ("serial: 8250: extend compile-test coverage") Reported-by: Geert Uytterhoeven Signed-off-by: Johan Hovold Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20210924141232.4419-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

xen/x86: make "earlyprintk=xen" work for HVM/PVH DomU

2021-10-05T06:36:05+00:00

xenboot_write_console() is dealing with these quite fine so I don't see why xenboot_console_setup() would return -ENOENT in this case. Adjust documentation accordingly. Signed-off-by: Jan Beulich Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/3d212583-700e-8b2d-727a-845ef33ac265@suse.com Signed-off-by: Juergen Gross

xen/x86: make "earlyprintk=xen" work better for PVH Dom0

2021-10-05T06:36:00+00:00

The xen_hvm_early_write() path better wouldn't be taken in this case; while port 0xE9 can be used, the hypercall path is quite a bit more efficient. Put that first, as it may also work for DomU-s (see also xen_raw_console_write()). While there also bail from the function when the first domU_write_console() failed - later ones aren't going to succeed. Signed-off-by: Jan Beulich Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/4fd89dcb-cfc5-c740-2e94-bb271e432d3e@suse.com Signed-off-by: Juergen Gross

tty: unexport tty_ldisc_release

2021-09-14T09:18:47+00:00

Initially, tty_ldisc_release() was exported for speakup (spk_tty) while in staging. Later, the call to this function was removed as it was bogus anyway. Remove the export now. Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210914091134.17426-1-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman

tty: synclink_gt: rename a conflicting function name

2021-09-14T08:51:37+00:00

'set_signals()' in synclink_gt.c conflicts with an exported symbol in arch/um/, so change set_signals() to set_gtsignals(). Keep the function names similar by also changing get_signals() to get_gtsignals(). ../drivers/tty/synclink_gt.c:442:13: error: conflicting types for ‘set_signals’ static void set_signals(struct slgt_info *info); ^~~~~~~~~~~ In file included from ../include/linux/irqflags.h:16:0, from ../include/linux/spinlock.h:58, from ../include/linux/mm_types.h:9, from ../include/linux/buildid.h:5, from ../include/linux/module.h:14, from ../drivers/tty/synclink_gt.c:46: ../arch/um/include/asm/irqflags.h:6:5: note: previous declaration of ‘set_signals’ was here int set_signals(int enable); ^~~~~~~~~~~ Fixes: 705b6c7b34f2 ("[PATCH] new driver synclink_gt") Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: Paul Fulghum Signed-off-by: Randy Dunlap Link: https://lore.kernel.org/r/20210902003806.17054-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

serial: mvebu-uart: fix driver's tx_empty callback

2021-09-14T08:07:10+00:00

Driver's tx_empty callback should signal when the transmit shift register is empty. So when the last character has been sent. STAT_TX_FIFO_EMP bit signals only that HW transmit FIFO is empty, which happens when the last byte is loaded into transmit shift register. STAT_TX_EMP bit signals when the both HW transmit FIFO and transmit shift register are empty. So replace STAT_TX_FIFO_EMP check by STAT_TX_EMP in mvebu_uart_tx_empty() callback function. Fixes: 30530791a7a0 ("serial: mvebu-uart: initial support for Armada-3700 serial port") Cc: stable Signed-off-by: Pali Rohár Link: https://lore.kernel.org/r/20210911132017.25505-1-pali@kernel.org Signed-off-by: Greg Kroah-Hartman