target/linux/ar71xx/patches-3.2/015-MIPS-ath79-register-UART-device-for-the-AR933X-SoCs.patch

   1 From d9215f4c69b414f589eeeff002af7ef58b96b172 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Mon, 20 Jun 2011 19:26:12 +0200
   4 Subject: [PATCH 15/27] MIPS: ath79: register UART device for the AR933X SoCs
   5
   6 The AR933X SoCs does not have a 8250 compatible UART, they
   7 are using a different UART core. Register a different platform
   8 device for the different UART.
   9
  10 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  11 Cc: linux-mips@linux-mips.org
  12 Cc: Kathy Giori <kgiori@qca.qualcomm.com>
  13 Cc: "Luis R.  Rodriguez" <rodrigue@qca.qualcomm.com>
  14 Patchwork: https://patchwork.linux-mips.org/patch/2528/
  15 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
  16 ---
  17  arch/mips/ath79/dev-common.c |   38 ++++++++++++++++++++++++++++++++++++--
  18  1 files changed, 36 insertions(+), 2 deletions(-)
  19
  20 --- a/arch/mips/ath79/dev-common.c
  21 +++ b/arch/mips/ath79/dev-common.c
  22 @@ -20,6 +20,7 @@
  23
  24  #include <asm/mach-ath79/ath79.h>
  25  #include <asm/mach-ath79/ar71xx_regs.h>
  26 +#include <asm/mach-ath79/ar933x_uart_platform.h>
  27  #include "common.h"
  28  #include "dev-common.h"
  29
  30 @@ -54,6 +55,30 @@ static struct platform_device ath79_uart
  31         },
  32  };
  33
  34 +static struct resource ar933x_uart_resources[] = {
  35 +       {
  36 +               .start  = AR933X_UART_BASE,
  37 +               .end    = AR933X_UART_BASE + AR71XX_UART_SIZE - 1,
  38 +               .flags  = IORESOURCE_MEM,
  39 +       },
  40 +       {
  41 +               .start  = ATH79_MISC_IRQ_UART,
  42 +               .end    = ATH79_MISC_IRQ_UART,
  43 +               .flags  = IORESOURCE_IRQ,
  44 +       },
  45 +};
  46 +
  47 +static struct ar933x_uart_platform_data ar933x_uart_data;
  48 +static struct platform_device ar933x_uart_device = {
  49 +       .name           = "ar933x-uart",
  50 +       .id             = -1,
  51 +       .resource       = ar933x_uart_resources,
  52 +       .num_resources  = ARRAY_SIZE(ar933x_uart_resources),
  53 +       .dev = {
  54 +               .platform_data  = &ar933x_uart_data,
  55 +       },
  56 +};
  57 +
  58  void __init ath79_register_uart(void)
  59  {
  60         struct clk *clk;
  61 @@ -62,8 +87,17 @@ void __init ath79_register_uart(void)
  62         if (IS_ERR(clk))
  63                 panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
  64
  65 -       ath79_uart_data[0].uartclk = clk_get_rate(clk);
  66 -       platform_device_register(&ath79_uart_device);
  67 +       if (soc_is_ar71xx() ||
  68 +           soc_is_ar724x() ||
  69 +           soc_is_ar913x()) {
  70 +               ath79_uart_data[0].uartclk = clk_get_rate(clk);
  71 +               platform_device_register(&ath79_uart_device);
  72 +       } else if (soc_is_ar933x()) {
  73 +               ar933x_uart_data.uartclk = clk_get_rate(clk);
  74 +               platform_device_register(&ar933x_uart_device);
  75 +       } else {
  76 +               BUG();
  77 +       }
  78  }
  79
  80  static struct platform_device ath79_wdt_device = {