target/linux/lantiq/patches-3.2/0030-MIPS-lantiq-convert-falcon-gpio-to-clkdev-api.patch

   1 From 3cb13f9992ae1948b6ca05c88d2bd25cf9e7cd41 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Thu, 8 Mar 2012 11:22:03 +0100
   4 Subject: [PATCH 30/70] MIPS: lantiq: convert falcon gpio to clkdev api
   5
   6 The falcon gpio clocks used to be enabled when registering the platform device.
   7 Move this code into the driver and use clkdev api.
   8
   9 Signed-off-by: John Crispin <blogic@openwrt.org>
  10 ---
  11  arch/mips/lantiq/falcon/devices.c |    5 -----
  12  arch/mips/lantiq/falcon/gpio.c    |   10 ++++++++++
  13  2 files changed, 10 insertions(+), 5 deletions(-)
  14
  15 --- a/arch/mips/lantiq/falcon/devices.c
  16 +++ b/arch/mips/lantiq/falcon/devices.c
  17 @@ -111,9 +111,6 @@ falcon_register_gpio(void)
  18                 falcon_gpio1_res, ARRAY_SIZE(falcon_gpio1_res));
  19         platform_device_register_simple("falcon_gpio", 2,
  20                 falcon_gpio2_res, ARRAY_SIZE(falcon_gpio2_res));
  21 -       ltq_sysctl_activate(SYSCTL_SYS1, ACTS_PADCTRL1 | ACTS_P1);
  22 -       ltq_sysctl_activate(SYSCTL_SYSETH, ACTS_PADCTRL0 |
  23 -               ACTS_PADCTRL2 | ACTS_P0 | ACTS_P2);
  24  }
  25
  26  void __init
  27 @@ -123,6 +120,4 @@ falcon_register_gpio_extra(void)
  28                 falcon_gpio3_res, ARRAY_SIZE(falcon_gpio3_res));
  29         platform_device_register_simple("falcon_gpio", 4,
  30                 falcon_gpio4_res, ARRAY_SIZE(falcon_gpio4_res));
  31 -       ltq_sysctl_activate(SYSCTL_SYS1,
  32 -               ACTS_PADCTRL3 | ACTS_PADCTRL4 | ACTS_P3 | ACTS_P4);
  33  }
  34 --- a/arch/mips/lantiq/falcon/gpio.c
  35 +++ b/arch/mips/lantiq/falcon/gpio.c
  36 @@ -11,6 +11,7 @@
  37  #include <linux/interrupt.h>
  38  #include <linux/slab.h>
  39  #include <linux/export.h>
  40 +#include <linux/err.h>
  41  #include <linux/platform_device.h>
  42
  43  #include <lantiq_soc.h>
  44 @@ -71,6 +72,7 @@ struct falcon_gpio_port {
  45         void __iomem *port;
  46         unsigned int irq_base;
  47         unsigned int chained_irq;
  48 +       struct clk *clk;
  49  };
  50
  51  static struct falcon_gpio_port ltq_gpio_port[MAX_PORTS];
  52 @@ -332,6 +334,14 @@ falcon_gpio_probe(struct platform_device
  53                 goto err;
  54         }
  55
  56 +       gpio_port->clk = clk_get(&pdev->dev, NULL);
  57 +       if (IS_ERR(gpio_port->clk)) {
  58 +               dev_err(&pdev->dev, "Could not get clock\n");
  59 +               ret = PTR_ERR(gpio_port->clk);;
  60 +               goto err;
  61 +       }
  62 +       clk_enable(gpio_port->clk);
  63 +
  64         if (irq > 0) {
  65                 /* irq_chip support */
  66                 gpio_port->gpio_chip.to_irq = falcon_gpio_to_irq;