src/patches/kernel/omap/panda/0003-Panda-expansion-add-spidev.patch

   1 From 3304f2feba4999fc1013911f0cf0d9acc33a0117 Mon Sep 17 00:00:00 2001
   2 From: Adrien Ferre <ferre.adrien@gmail.com>
   3 Date: Mon, 25 Mar 2013 12:00:38 -0500
   4 Subject: [PATCH 3/3] Panda: expansion: add spidev
   5
   6 I've made a patch to enable spidev on pandaboards using buddy=spidev just like for beagle.
   7
   8 https://github.com/RobertCNelson/stable-kernel/issues/22
   9
  10 Signed-off-by: Adrien Ferre <ferre.adrien@gmail.com>
  11 Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
  12 ---
  13  arch/arm/mach-omap2/board-omap4panda.c |   43 ++++++++++++++++++++++++++++++++
  14  1 file changed, 43 insertions(+)
  15
  16 diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
  17 index 1e2c75e..3563f86 100644
  18 --- a/arch/arm/mach-omap2/board-omap4panda.c
  19 +++ b/arch/arm/mach-omap2/board-omap4panda.c
  20 @@ -22,6 +22,7 @@
  21  #include <linux/clk.h>
  22  #include <linux/io.h>
  23  #include <linux/leds.h>
  24 +#include <linux/irq.h>
  25  #include <linux/gpio.h>
  26  #include <linux/usb/otg.h>
  27  #include <linux/i2c/twl.h>
  28 @@ -35,6 +36,7 @@
  29  #include <linux/wl12xx.h>
  30  #include <linux/irqchip/arm-gic.h>
  31  #include <linux/platform_data/omap-abe-twl6040.h>
  32 +#include <linux/spi/spi.h>
  33
  34  #include <asm/mach-types.h>
  35  #include <asm/mach/arch.h>
  36 @@ -54,6 +56,8 @@
  37  #define GPIO_WIFI_PMENA                43
  38  #define GPIO_WIFI_IRQ          53
  39
  40 +char expboard_name[16];
  41 +
  42  /* wl127x BT, FM, GPS connectivity chip */
  43  static struct ti_st_plat_data wilink_platform_data = {
  44         .nshutdown_gpio = 46,
  45 @@ -99,6 +103,25 @@ static struct platform_device leds_gpio = {
  46         },
  47  };
  48
  49 +static struct spi_board_info panda_mcspi_board_info[] = {
  50 +       /* spi 1.0 */
  51 +       {
  52 +               .modalias       = "spidev",
  53 +               .max_speed_hz   = 48000000, //48 Mbps
  54 +               .bus_num        = 1,
  55 +               .chip_select    = 0,
  56 +               .mode = SPI_MODE_1,
  57 +       },
  58 +       /* spi 1.1 */
  59 +       {
  60 +               .modalias       = "spidev",
  61 +               .max_speed_hz   = 48000000, //48 Mbps
  62 +               .bus_num        = 1,
  63 +               .chip_select    = 1,
  64 +               .mode = SPI_MODE_1,
  65 +       },
  66 +};
  67 +
  68  static struct omap_abe_twl6040_data panda_abe_audio_data = {
  69         /* Audio out */
  70         .has_hs         = ABE_TWL6040_LEFT | ABE_TWL6040_RIGHT,
  71 @@ -161,6 +184,18 @@ static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
  72         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
  73  };
  74
  75 +static int __init expansionboard_setup(char *str)
  76 +{
  77 +       if (!machine_is_omap4_panda())
  78 +               return 0;
  79 +
  80 +       if (!str)
  81 +               return -EINVAL;
  82 +       strncpy(expboard_name, str, 16);
  83 +       pr_info("Panda expansionboard: %s\n", expboard_name);
  84 +       return 0;
  85 +}
  86 +
  87  static void __init omap4_ehci_init(void)
  88  {
  89         int ret;
  90 @@ -435,11 +470,19 @@ static void __init omap4_panda_init(void)
  91         omap_sdrc_init(NULL, NULL);
  92         omap4_twl6030_hsmmc_init(mmc);
  93         omap4_ehci_init();
  94 +       if (!strcmp(expboard_name, "spidev")) {
  95 +       #if IS_ENABLED(CONFIG_SPI_SPIDEV)
  96 +               pr_info("Panda expansionboard: spidev: enabling spi3/spi4\n");
  97 +               spi_register_board_info(panda_mcspi_board_info, ARRAY_SIZE(panda_mcspi_board_info));
  98 +       #endif
  99 +       }
 100         usb_bind_phy("musb-hdrc.2.auto", 0, "omap-usb2.3.auto");
 101         usb_musb_init(&musb_board_data);
 102         omap4_panda_display_init();
 103  }
 104
 105 +early_param("buddy", expansionboard_setup);
 106 +
 107  MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
 108         /* Maintainer: David Anders - Texas Instruments Inc */
 109         .atag_offset    = 0x100,
 110 --
 111 1.7.10.4
 112