From 8a4cb7d536d0b490c27b599f87638917c52bec5f Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 20 Jun 2011 19:26:12 +0200 Subject: [PATCH] MIPS: ath79: register UART device for the AR933X SoCs The AR933X SoCs does not have a 8250 compatible UART, they are using a different UART core. Register a different platform device for the different UART. Signed-off-by: Gabor Juhos Cc: linux-mips@linux-mips.org Cc: Kathy Giori Cc: "Luis R. Rodriguez" Patchwork: https://patchwork.linux-mips.org/patch/2528/ Signed-off-by: Ralf Baechle --- arch/mips/ath79/dev-common.c | 38 ++++++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c index 3b82e325bebf..f4956f809072 100644 --- a/arch/mips/ath79/dev-common.c +++ b/arch/mips/ath79/dev-common.c @@ -20,6 +20,7 @@ #include #include +#include #include "common.h" #include "dev-common.h" @@ -54,6 +55,30 @@ static struct platform_device ath79_uart_device = { }, }; +static struct resource ar933x_uart_resources[] = { + { + .start = AR933X_UART_BASE, + .end = AR933X_UART_BASE + AR71XX_UART_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = ATH79_MISC_IRQ_UART, + .end = ATH79_MISC_IRQ_UART, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct ar933x_uart_platform_data ar933x_uart_data; +static struct platform_device ar933x_uart_device = { + .name = "ar933x-uart", + .id = -1, + .resource = ar933x_uart_resources, + .num_resources = ARRAY_SIZE(ar933x_uart_resources), + .dev = { + .platform_data = &ar933x_uart_data, + }, +}; + void __init ath79_register_uart(void) { struct clk *clk; @@ -62,8 +87,17 @@ void __init ath79_register_uart(void) if (IS_ERR(clk)) panic("unable to get UART clock, err=%ld", PTR_ERR(clk)); - ath79_uart_data[0].uartclk = clk_get_rate(clk); - platform_device_register(&ath79_uart_device); + if (soc_is_ar71xx() || + soc_is_ar724x() || + soc_is_ar913x()) { + ath79_uart_data[0].uartclk = clk_get_rate(clk); + platform_device_register(&ath79_uart_device); + } else if (soc_is_ar933x()) { + ar933x_uart_data.uartclk = clk_get_rate(clk); + platform_device_register(&ar933x_uart_device); + } else { + BUG(); + } } static struct platform_device ath79_wdt_device = { -- 2.39.5