target/linux/layerscape/patches-5.4/804-crypto-0031-crypto-caam-add-caam_dma-device-on-caam_probe.patch

   1 From 0547020c73ab7a457f3e1601ef822b61f0b963b9 Mon Sep 17 00:00:00 2001
   2 From: Radu Alexe <radu.alexe@nxp.com>
   3 Date: Wed, 8 Nov 2017 17:22:12 +0200
   4 Subject: [PATCH] crypto: caam - add caam_dma device on caam_probe
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Dynamically create a platform device for the caam_dma driver
  10 at caam_probe() time.
  11
  12 Signed-off-by: Radu Alexe <radu.alexe@nxp.com>
  13 Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
  14
  15 Use devres for caam_dma platform device unregistering.
  16
  17 Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
  18 ---
  19  drivers/crypto/caam/ctrl.c | 24 ++++++++++++++++++++++++
  20  1 file changed, 24 insertions(+)
  21
  22 --- a/drivers/crypto/caam/ctrl.c
  23 +++ b/drivers/crypto/caam/ctrl.c
  24 @@ -566,12 +566,22 @@ static void caam_remove_debugfs(void *ro
  25  }
  26  #endif
  27
  28 +static void caam_dma_dev_unregister(void *data)
  29 +{
  30 +       platform_device_unregister(data);
  31 +}
  32 +
  33  /* Probe routine for CAAM top (controller) level */
  34  static int caam_probe(struct platform_device *pdev)
  35  {
  36         int ret, ring, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN;
  37         u64 caam_id;
  38         const struct soc_device_attribute *imx_soc_match;
  39 +       static struct platform_device_info caam_dma_pdev_info = {
  40 +               .name = "caam-dma",
  41 +               .id = PLATFORM_DEVID_NONE
  42 +       };
  43 +       static struct platform_device *caam_dma_dev;
  44         struct device *dev;
  45         struct device_node *nprop, *np;
  46         struct resource res_regs;
  47 @@ -849,6 +859,20 @@ set_dma_mask:
  48                 return -ENOMEM;
  49         }
  50
  51 +       caam_dma_pdev_info.parent = dev;
  52 +       caam_dma_pdev_info.dma_mask = dma_get_mask(dev);
  53 +       caam_dma_dev = platform_device_register_full(&caam_dma_pdev_info);
  54 +       if (IS_ERR(caam_dma_dev)) {
  55 +               dev_err(dev, "Unable to create and register caam-dma dev\n");
  56 +               return PTR_ERR(caam_dma_dev);
  57 +       } else {
  58 +               set_dma_ops(&caam_dma_dev->dev, get_dma_ops(dev));
  59 +               ret = devm_add_action_or_reset(dev, caam_dma_dev_unregister,
  60 +                                              caam_dma_dev);
  61 +               if (ret)
  62 +                       return ret;
  63 +       }
  64 +
  65         if (!reg_access)
  66                 goto report_live;
  67