From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matteo Croce Subject: [PATCH][MIPS][6/7] AR7: serial hack Date: Thu, 20 Sep 2007 18:11:10 +0200 Message-ID: <200709201811.10447.technoboy85@gmail.com> References: <200709201728.10866.technoboy85@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from an-out-0708.google.com ([209.85.132.241]:5382 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756575AbXITQLS (ORCPT ); Thu, 20 Sep 2007 12:11:18 -0400 Received: by an-out-0708.google.com with SMTP id d31so87802and for ; Thu, 20 Sep 2007 09:11:17 -0700 (PDT) In-Reply-To: <200709201728.10866.technoboy85@gmail.com> Content-Disposition: inline Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: linux-mips@linux-mips.org Cc: Florian Fainelli , Felix Fietkau , Nicolas Thill , linux-serial@vger.kernel.org, Andrew Morton Hack to use serial in the way the bootloader wants to. Signed-off-by: Matteo Croce Signed-off-by: Florian Fainelli Signed-off-by: Felix Fietkau Signed-off-by: Nicolas Thill diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index f94109c..94253b7 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -267,6 +267,13 @@ static const struct serial8250_config uart_config[] = { .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, .flags = UART_CAP_FIFO, }, + [PORT_AR7] = { + .name = "TI-AR7", + .fifo_size = 16, + .tx_loadsz = 16, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, }; #if defined (CONFIG_SERIAL_8250_AU1X00) @@ -2453,7 +2460,11 @@ static void serial8250_console_putchar(struct uart_port *port, int ch) { struct uart_8250_port *up = (struct uart_8250_port *)port; +#ifdef CONFIG_AR7 + wait_for_xmitr(up, BOTH_EMPTY); +#else wait_for_xmitr(up, UART_LSR_THRE); +#endif serial_out(up, UART_TX, ch); } diff --git a/include/linux/serialP.h b/include/linux/serialP.h index e811a61..cf71de9 100644 --- a/include/linux/serialP.h +++ b/include/linux/serialP.h @@ -135,6 +135,10 @@ struct rs_multiport_struct { * the interrupt line _up_ instead of down, so if we register the IRQ * while the UART is in that state, we die in an IRQ storm. */ #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2) +#elif defined(CONFIG_AR7) +/* This is how it is set up by bootloader... */ +#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1 \ + | UART_MCR_RTS | UART_MCR_DTR) #else #define ALPHA_KLUDGE_MCR 0 #endif diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 09d17b0..8ad2c3b 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -40,6 +40,7 @@ #define PORT_NS16550A 14 #define PORT_XSCALE 15 #define PORT_RM9000 16 /* PMC-Sierra RM9xxx internal UART */ +#define PORT_AR7 16 #define PORT_MAX_8250 16 /* max port ID */ /*