From: Paul Burton Date: Sun, 24 May 2015 15:11:45 +0000 (+0100) Subject: MIPS: JZ4740: use Ingenic SoC UART driver X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8838245d76b9bb2e20c9a7a977487d72c0117b9a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Cc: Ian Campbell Cc: Kumar Gala Cc: Lars-Peter Clausen Cc: Mark Rutland Cc: Pawel Moll Cc: Rob Herring Cc: devicetree@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: Linus Walleij Cc: Stephen Warren Cc: linux-kernel@vger.kernel.org Cc: Brian Norris Cc: Apelete Seketeli Cc: Alexandre Courbot Patchwork: https://patchwork.linux-mips.org/patch/10160/ Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index d5acb9e96d59..be384d6a58bb 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -297,7 +297,6 @@ config MACH_INGENIC select DMA_NONCOHERENT select IRQ_MIPS_CPU select ARCH_REQUIRE_GPIOLIB - select SYS_HAS_EARLY_PRINTK select COMMON_CLK select GENERIC_IRQ_CHIP select BUILTIN_DTB diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi b/arch/mips/boot/dts/ingenic/jz4740.dtsi index be0a86f15636..8b2437cd019f 100644 --- a/arch/mips/boot/dts/ingenic/jz4740.dtsi +++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi @@ -43,4 +43,26 @@ #clock-cells = <1>; }; + + uart0: serial@10030000 { + compatible = "ingenic,jz4740-uart"; + reg = <0x10030000 0x100>; + + interrupt-parent = <&intc>; + interrupts = <9>; + + clocks = <&ext>, <&cgu JZ4740_CLK_UART0>; + clock-names = "baud", "module"; + }; + + uart1: serial@10031000 { + compatible = "ingenic,jz4740-uart"; + reg = <0x10031000 0x100>; + + interrupt-parent = <&intc>; + interrupts = <8>; + + clocks = <&ext>, <&cgu JZ4740_CLK_UART1>; + clock-names = "baud", "module"; + }; }; diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts index 106d13cce11b..2414d63ae818 100644 --- a/arch/mips/boot/dts/ingenic/qi_lb60.dts +++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts @@ -4,6 +4,10 @@ / { compatible = "qi,lb60", "ingenic,jz4740"; + + chosen { + stdout-path = &uart0; + }; }; &ext { diff --git a/arch/mips/configs/qi_lb60_defconfig b/arch/mips/configs/qi_lb60_defconfig index 1139b899f96a..d7bb8cce1068 100644 --- a/arch/mips/configs/qi_lb60_defconfig +++ b/arch/mips/configs/qi_lb60_defconfig @@ -66,6 +66,7 @@ CONFIG_SERIAL_8250_CONSOLE=y # CONFIG_SERIAL_8250_DMA is not set CONFIG_SERIAL_8250_NR_UARTS=2 CONFIG_SERIAL_8250_RUNTIME_UARTS=2 +CONFIG_SERIAL_8250_INGENIC=y # CONFIG_HW_RANDOM is not set CONFIG_SPI=y CONFIG_SPI_GPIO=y diff --git a/arch/mips/include/asm/mach-jz4740/platform.h b/arch/mips/include/asm/mach-jz4740/platform.h index 069b43a9da6f..32cfbe6a191b 100644 --- a/arch/mips/include/asm/mach-jz4740/platform.h +++ b/arch/mips/include/asm/mach-jz4740/platform.h @@ -35,6 +35,4 @@ extern struct platform_device jz4740_wdt_device; extern struct platform_device jz4740_pwm_device; extern struct platform_device jz4740_dma_device; -void jz4740_serial_device_register(void); - #endif 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 #include -#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 - * 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 -#include -#include - -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 - * 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