diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2019-08-09 16:40:37 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-08-15 21:34:02 +0200 |
| commit | ffba29c9ebd0977dbf77bf6064776716a51b8ae5 (patch) | |
| tree | c6d42d43db9fd1800228073b61d4abc27485bbc9 /drivers | |
| parent | 35974a7cc23c5deb5597c0a42183172498c4a0a8 (diff) | |
serial: lpc32xx: allow compile testing
The lpc32xx_loopback_set() function in hte lpc32xx_hs driver is the
one thing that relies on platform header files. Move that into the
core platform code so we only need a variable declaration for it,
and enable COMPILE_TEST building.
Link: https://lore.kernel.org/r/20190809144043.476786-12-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/lpc32xx_hs.c | 35 |
1 files changed, 4 insertions, 31 deletions
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c index 7f14cd8fac47..d3843f722182 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -25,6 +25,8 @@ #include <linux/irq.h> #include <linux/gpio.h> #include <linux/of.h> +#include <linux/sizes.h> +#include <linux/soc/nxp/lpc32xx-misc.h> /* * High Speed UART register offsets @@ -79,6 +81,8 @@ #define LPC32XX_HSU_TX_TL8B (0x2 << 0) #define LPC32XX_HSU_TX_TL16B (0x3 << 0) +#define LPC32XX_MAIN_OSC_FREQ 13000000 + #define MODNAME "lpc32xx_hsuart" struct lpc32xx_hsuart_port { @@ -149,8 +153,6 @@ static void lpc32xx_hsuart_console_write(struct console *co, const char *s, local_irq_restore(flags); } -static void lpc32xx_loopback_set(resource_size_t mapbase, int state); - static int __init lpc32xx_hsuart_console_setup(struct console *co, char *options) { @@ -437,35 +439,6 @@ static void serial_lpc32xx_break_ctl(struct uart_port *port, spin_unlock_irqrestore(&port->lock, flags); } -/* LPC3250 Errata HSUART.1: Hang workaround via loopback mode on inactivity */ -static void lpc32xx_loopback_set(resource_size_t mapbase, int state) -{ - int bit; - u32 tmp; - - switch (mapbase) { - case LPC32XX_HS_UART1_BASE: - bit = 0; - break; - case LPC32XX_HS_UART2_BASE: - bit = 1; - break; - case LPC32XX_HS_UART7_BASE: - bit = 6; - break; - default: - WARN(1, "lpc32xx_hs: Warning: Unknown port at %08x\n", mapbase); - return; - } - - tmp = readl(LPC32XX_UARTCTL_CLOOP); - if (state) - tmp |= (1 << bit); - else - tmp &= ~(1 << bit); - writel(tmp, LPC32XX_UARTCTL_CLOOP); -} - /* port->lock is not held. */ static int serial_lpc32xx_startup(struct uart_port *port) { |