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authorPaul Burton <paul.burton@imgtec.com>2015-05-24 17:11:45 +0200
committerRalf Baechle <ralf@linux-mips.org>2015-06-21 21:53:26 +0200
commit8838245d76b9bb2e20c9a7a977487d72c0117b9a (patch)
tree92fe537807b2078dae7b2a1f6f05ed7f8f25858d /arch/mips/jz4740
parentserial: 8250_ingenic: support for Ingenic SoC UARTs (diff)
downloadlinux-8838245d76b9bb2e20c9a7a977487d72c0117b9a.tar.xz
linux-8838245d76b9bb2e20c9a7a977487d72c0117b9a.zip
MIPS: JZ4740: use Ingenic SoC UART driver
Remove the serial support from arch/mips/jz4740 & make use of the new Ingenic SoC UART driver. This is done for both regular & early console output. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: linux-kernel@vger.kernel.org Cc: Brian Norris <computersforpeace@gmail.com> Cc: Apelete Seketeli <apelete@seketeli.net> Cc: Alexandre Courbot <gnurou@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/10160/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/jz4740')
-rw-r--r--arch/mips/jz4740/Makefile2
-rw-r--r--arch/mips/jz4740/board-qi_lb60.c2
-rw-r--r--arch/mips/jz4740/platform.c45
-rw-r--r--arch/mips/jz4740/prom.c13
-rw-r--r--arch/mips/jz4740/serial.c33
-rw-r--r--arch/mips/jz4740/serial.h23
6 files changed, 1 insertions, 117 deletions
diff --git a/arch/mips/jz4740/Makefile b/arch/mips/jz4740/Makefile
index 70a9578cc6db..89ce40143854 100644
--- a/arch/mips/jz4740/Makefile
+++ b/arch/mips/jz4740/Makefile
@@ -5,7 +5,7 @@
# Object file lists.
obj-y += prom.o time.o reset.o setup.o \
- gpio.o platform.o timer.o serial.o
+ gpio.o platform.o timer.o
CFLAGS_setup.o = -I$(src)/../../../scripts/dtc/libfdt
diff --git a/arch/mips/jz4740/board-qi_lb60.c b/arch/mips/jz4740/board-qi_lb60.c
index 21b034cea864..4e62bf85d0b0 100644
--- a/arch/mips/jz4740/board-qi_lb60.c
+++ b/arch/mips/jz4740/board-qi_lb60.c
@@ -482,8 +482,6 @@ static int __init qi_lb60_init_platform_devices(void)
gpiod_add_lookup_table(&qi_lb60_audio_gpio_table);
gpiod_add_lookup_table(&qi_lb60_nand_gpio_table);
- jz4740_serial_device_register();
-
spi_register_board_info(qi_lb60_spi_board_info,
ARRAY_SIZE(qi_lb60_spi_board_info));
diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c
index 2a5c7c7d0735..e8a463b9b663 100644
--- a/arch/mips/jz4740/platform.c
+++ b/arch/mips/jz4740/platform.c
@@ -30,7 +30,6 @@
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
-#include "serial.h"
#include "clock.h"
/* OHCI controller */
@@ -280,50 +279,6 @@ struct platform_device jz4740_adc_device = {
.resource = jz4740_adc_resources,
};
-/* Serial */
-#define JZ4740_UART_DATA(_id) \
- { \
- .flags = UPF_SKIP_TEST | UPF_IOREMAP | UPF_FIXED_TYPE, \
- .iotype = UPIO_MEM, \
- .regshift = 2, \
- .serial_out = jz4740_serial_out, \
- .type = PORT_16550, \
- .mapbase = JZ4740_UART ## _id ## _BASE_ADDR, \
- .irq = JZ4740_IRQ_UART ## _id, \
- }
-
-static struct plat_serial8250_port jz4740_uart_data[] = {
- JZ4740_UART_DATA(0),
- JZ4740_UART_DATA(1),
- {},
-};
-
-static struct platform_device jz4740_uart_device = {
- .name = "serial8250",
- .id = 0,
- .dev = {
- .platform_data = jz4740_uart_data,
- },
-};
-
-void jz4740_serial_device_register(void)
-{
- struct plat_serial8250_port *p;
- struct clk *ext_clk;
- unsigned long ext_rate;
-
- ext_clk = clk_get(NULL, "ext");
- if (IS_ERR(ext_clk))
- panic("unable to get ext clock");
- ext_rate = clk_get_rate(ext_clk);
- clk_put(ext_clk);
-
- for (p = jz4740_uart_data; p->flags != 0; ++p)
- p->uartclk = ext_rate;
-
- platform_device_register(&jz4740_uart_device);
-}
-
/* Watchdog */
static struct resource jz4740_wdt_resources[] = {
{
diff --git a/arch/mips/jz4740/prom.c b/arch/mips/jz4740/prom.c
index 5a93f381590d..6984683c90d0 100644
--- a/arch/mips/jz4740/prom.c
+++ b/arch/mips/jz4740/prom.c
@@ -53,16 +53,3 @@ void __init prom_init(void)
void __init prom_free_prom_memory(void)
{
}
-
-#define UART_REG(_reg) ((void __iomem *)CKSEG1ADDR(JZ4740_UART0_BASE_ADDR + (_reg << 2)))
-
-void prom_putchar(char c)
-{
- uint8_t lsr;
-
- do {
- lsr = readb(UART_REG(UART_LSR));
- } while ((lsr & UART_LSR_TEMT) == 0);
-
- writeb(c, UART_REG(UART_TX));
-}
diff --git a/arch/mips/jz4740/serial.c b/arch/mips/jz4740/serial.c
deleted file mode 100644
index d23de45826d1..000000000000
--- a/arch/mips/jz4740/serial.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
- * JZ4740 serial support
- *
- * 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.
- *
- * 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.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/io.h>
-#include <linux/serial_core.h>
-#include <linux/serial_reg.h>
-
-void jz4740_serial_out(struct uart_port *p, int offset, int value)
-{
- switch (offset) {
- case UART_FCR:
- value |= 0x10; /* Enable uart module */
- break;
- case UART_IER:
- value |= (value & 0x4) << 2;
- break;
- default:
- break;
- }
- writeb(value, p->membase + (offset << p->regshift));
-}
diff --git a/arch/mips/jz4740/serial.h b/arch/mips/jz4740/serial.h
deleted file mode 100644
index 8eb715bb1ea8..000000000000
--- a/arch/mips/jz4740/serial.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
- * JZ4740 serial support
- *
- * 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.
- *
- * 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.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#ifndef __MIPS_JZ4740_SERIAL_H__
-#define __MIPS_JZ4740_SERIAL_H__
-
-struct uart_port;
-
-void jz4740_serial_out(struct uart_port *p, int offset, int value);
-
-#endif