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tegra2: Remove unused low-level Tegra2 UART code

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This was used by the AVP in early boot but is no longer used. Unless we
plan to enable it somehow it is not needed. In any case we should try
to use the ns16550 driver instead as it has the same code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass 2011-11-05 03:56:55 +00:00 committed by Albert ARIBAUD
parent 8f6cbb4c07
commit 4c7447dfc7
3 changed files with 0 additions and 107 deletions
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1
drivers/serial/Makefile
View file

@ -55,7 +55,6 @@ COBJS-$(CONFIG_S3C44B0_SERIAL) += serial_s3c44b0.o
COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
COBJS-$(CONFIG_SANDBOX_SERIAL) += sandbox.o
COBJS-$(CONFIG_SCIF_CONSOLE) += serial_sh.o
COBJS-$(CONFIG_TEGRA2) += serial_tegra2.o
ifndef CONFIG_SPL_BUILD
COBJS-$(CONFIG_USB_TTY) += usbtty.o

77
drivers/serial/serial_tegra2.c
View file

@ -1,77 +0,0 @@
/*
* (C) Copyright 2010,2011
* NVIDIA Corporation <www.nvidia.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <ns16550.h>
#include <asm/io.h>
#include <asm/arch/tegra2.h>
#include "serial_tegra2.h"
static void setup_uart(struct uart_ctlr *u)
{
u32 reg;
/* Prepare the divisor value */
reg = NVRM_PLLP_FIXED_FREQ_KHZ * 1000 / NV_DEFAULT_DEBUG_BAUD / 16;
/* Set up UART parameters */
writel(UART_LCR_DLAB, &u->uart_lcr);
writel(reg, &u->uart_thr_dlab_0);
writel(0, &u->uart_ier_dlab_0);
writel(0, &u->uart_lcr); /* clear DLAB */
writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN | \
UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR), &u->uart_iir_fcr);
writel(0, &u->uart_ier_dlab_0);
writel(UART_LCR_WLS_8, &u->uart_lcr); /* 8N1 */
writel(UART_MCR_RTS, &u->uart_mcr);
writel(0, &u->uart_msr);
writel(0, &u->uart_spr);
writel(0, &u->uart_irda_csr);
writel(0, &u->uart_asr);
writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN), &u->uart_iir_fcr);
/* Flush any old characters out of the RX FIFO */
reg = readl(&u->uart_lsr);
while (reg & UART_LSR_DR) {
reg = readl(&u->uart_thr_dlab_0);
reg = readl(&u->uart_lsr);
}
}
/*
* Routine: uart_init
* Description: init the UART clocks, muxes, and baudrate/parity/etc.
*/
void uart_init(void)
{
struct uart_ctlr *uart = (struct uart_ctlr *)NV_PA_APB_UARTD_BASE;
#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
setup_uart(uart);
#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
#if defined(CONFIG_TEGRA2_ENABLE_UARTA)
uart = (struct uart_ctlr *)NV_PA_APB_UARTA_BASE;
setup_uart(uart);
#endif /* CONFIG_TEGRA2_ENABLE_UARTA */
}

29
drivers/serial/serial_tegra2.h
View file

@ -1,29 +0,0 @@
/*
* (C) Copyright 2010,2011
* NVIDIA Corporation <www.nvidia.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _SERIAL_TEGRA_H_
#define _SERIAL_TEGRA_H_
#include <asm/arch/uart.h>
#endif /* _SERIAL_TEGRA_H_ */