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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-11-16 20:40:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 06:59:48 +0300 |
| commit | 7ec758718920e5e5876d0d02ece6855128c8eb1e (patch) | |
| tree | ecdc049d7a296b75b1fe7f0da731bf8c875fc8c4 /drivers | |
| parent | 84c3e03bdd1146191b7222ed62a08512199a45c7 (diff) | |
| download | linux-7ec758718920e5e5876d0d02ece6855128c8eb1e.tar.xz | |
tty: amba-pl011: add support for ZTE UART (EXPERIMENTAL)
Add (incomplete) support for the ZTE UART to the AMBA PL011 driver.
This is similar to the ARM and ST variants, except it has a different
register address layout, and requires 32-bit accesses to the registers.
Use the newly introduced register tables and access size support to
cope with these differences.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index c8165b61dbf8..295f0be128f9 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -171,6 +171,29 @@ static struct vendor_data vendor_st = { .get_fifosize = get_fifosize_st, }; +static const u16 pl011_zte_offsets[REG_ARRAY_SIZE] = { + [REG_DR] = ZX_UART011_DR, + [REG_FR] = ZX_UART011_FR, + [REG_LCRH_RX] = ZX_UART011_LCRH, + [REG_LCRH_TX] = ZX_UART011_LCRH, + [REG_IBRD] = ZX_UART011_IBRD, + [REG_FBRD] = ZX_UART011_FBRD, + [REG_CR] = ZX_UART011_CR, + [REG_IFLS] = ZX_UART011_IFLS, + [REG_IMSC] = ZX_UART011_IMSC, + [REG_RIS] = ZX_UART011_RIS, + [REG_MIS] = ZX_UART011_MIS, + [REG_ICR] = ZX_UART011_ICR, + [REG_DMACR] = ZX_UART011_DMACR, +}; + +static struct vendor_data vendor_zte = { + .reg_offset = pl011_zte_offsets, + .access_32b = true, + .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8, + .get_fifosize = get_fifosize_arm, +}; + /* Deals with DMA transactions */ struct pl011_sgbuf { |