target/linux/brcm2708/patches-4.1/0134-vchiq-Use-firmware-API.patch

   1 From e3508264148f91aceb5f557d45eb29986c522f1e Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
   3 Date: Mon, 20 Jul 2015 12:13:18 +0200
   4 Subject: [PATCH 134/148] vchiq: Use firmware API
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Use the new firmware API instead of the legacy mailbox API.
  10
  11 Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
  12 ---
  13  arch/arm/boot/dts/bcm2708_common.dtsi                   |  1 +
  14  .../vc04_services/interface/vchiq_arm/vchiq_2835_arm.c  | 17 +++++++++--------
  15  .../misc/vc04_services/interface/vchiq_arm/vchiq_arm.c  | 17 +++++++++++++++++
  16  3 files changed, 27 insertions(+), 8 deletions(-)
  17
  18 --- a/arch/arm/boot/dts/bcm2708_common.dtsi
  19 +++ b/arch/arm/boot/dts/bcm2708_common.dtsi
  20 @@ -225,6 +225,7 @@
  21                         reg = <0x7e00b840 0xf>;
  22                         interrupts = <0 2>;
  23                         cache-line-size = <32>;
  24 +                       firmware = <&firmware>;
  25                 };
  26
  27                 thermal: thermal {
  28 --- a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
  29 +++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
  30 @@ -39,11 +39,11 @@
  31  #include <linux/dma-mapping.h>
  32  #include <linux/version.h>
  33  #include <linux/io.h>
  34 -#include <linux/platform_data/mailbox-bcm2708.h>
  35  #include <linux/platform_device.h>
  36  #include <linux/uaccess.h>
  37  #include <linux/of.h>
  38  #include <asm/pgtable.h>
  39 +#include <soc/bcm2835/raspberrypi-firmware.h>
  40
  41  #define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32)
  42
  43 @@ -89,10 +89,12 @@ free_pagelist(PAGELIST_T *pagelist, int
  44  int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state)
  45  {
  46         struct device *dev = &pdev->dev;
  47 +       struct rpi_firmware *fw = platform_get_drvdata(pdev);
  48         VCHIQ_SLOT_ZERO_T *vchiq_slot_zero;
  49         struct resource *res;
  50         void *slot_mem;
  51         dma_addr_t slot_phys;
  52 +       u32 channelbase;
  53         int slot_mem_size, frag_mem_size;
  54         int err, irq, i;
  55
  56 @@ -157,13 +159,12 @@ int vchiq_platform_init(struct platform_
  57         }
  58
  59         /* Send the base address of the slots to VideoCore */
  60 -
  61 -       dsb(); /* Ensure all writes have completed */
  62 -
  63 -       err = bcm_mailbox_write(MBOX_CHAN_VCHIQ, (unsigned int)slot_phys);
  64 -       if (err) {
  65 -               dev_err(dev, "mailbox write failed\n");
  66 -               return err;
  67 +       channelbase = slot_phys;
  68 +       err = rpi_firmware_property(fw, RPI_FIRMWARE_VCHIQ_INIT,
  69 +                                   &channelbase, sizeof(channelbase));
  70 +       if (err || channelbase) {
  71 +               dev_err(dev, "failed to set channelbase\n");
  72 +               return err ? : -ENXIO;
  73         }
  74
  75         vchiq_log_info(vchiq_arm_log_level,
  76 --- a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
  77 +++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
  78 @@ -45,7 +45,9 @@
  79  #include <linux/bug.h>
  80  #include <linux/semaphore.h>
  81  #include <linux/list.h>
  82 +#include <linux/of.h>
  83  #include <linux/platform_device.h>
  84 +#include <soc/bcm2835/raspberrypi-firmware.h>
  85
  86  #include "vchiq_core.h"
  87  #include "vchiq_ioctl.h"
  88 @@ -2793,9 +2795,24 @@ void vchiq_platform_conn_state_changed(V
  89
  90  static int vchiq_probe(struct platform_device *pdev)
  91  {
  92 +       struct device_node *fw_node;
  93 +       struct rpi_firmware *fw;
  94         int err;
  95         void *ptr_err;
  96
  97 +       fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
  98 +/* Remove comment when booting without Device Tree is no longer supported
  99 +       if (!fw_node) {
 100 +               dev_err(&pdev->dev, "Missing firmware node\n");
 101 +               return -ENOENT;
 102 +       }
 103 +*/
 104 +       fw = rpi_firmware_get(fw_node);
 105 +       if (!fw)
 106 +               return -EPROBE_DEFER;
 107 +
 108 +       platform_set_drvdata(pdev, fw);
 109 +
 110         /* create debugfs entries */
 111         err = vchiq_debugfs_init();
 112         if (err != 0)