git.openwrt.org Git - openwrt/staging/stintel.git/blob

   1 From cdab30b44518513003607ecfc8a22de3dbbb78ed Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Thu, 7 Jul 2022 12:20:38 +0200
   4 Subject: [PATCH 1/1] hwspinlock: qcom: Add support for mmio usage to
   5  sfpb-mutex
   6
   7 Allow sfpb-mutex to use mmio in addition to syscon.
   8
   9 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  10 Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
  11 Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
  12 Link: https://lore.kernel.org/r/20220707102040.1859-1-ansuelsmth@gmail.com
  13 ---
  14  drivers/hwspinlock/qcom_hwspinlock.c | 28 +++++++++++++++++++++++-----
  15  1 file changed, 23 insertions(+), 5 deletions(-)
  16
  17 --- a/drivers/hwspinlock/qcom_hwspinlock.c
  18 +++ b/drivers/hwspinlock/qcom_hwspinlock.c
  19 @@ -19,6 +19,11 @@
  20  #define QCOM_MUTEX_APPS_PROC_ID        1
  21  #define QCOM_MUTEX_NUM_LOCKS   32
  22
  23 +struct qcom_hwspinlock_of_data {
  24 +       u32 offset;
  25 +       u32 stride;
  26 +};
  27 +
  28  static int qcom_hwspinlock_trylock(struct hwspinlock *lock)
  29  {
  30         struct regmap_field *field = lock->priv;
  31 @@ -63,9 +68,20 @@ static const struct hwspinlock_ops qcom_
  32         .unlock         = qcom_hwspinlock_unlock,
  33  };
  34
  35 +static const struct qcom_hwspinlock_of_data of_sfpb_mutex = {
  36 +       .offset = 0x4,
  37 +       .stride = 0x4,
  38 +};
  39 +
  40 +/* All modern platform has offset 0 and stride of 4k */
  41 +static const struct qcom_hwspinlock_of_data of_tcsr_mutex = {
  42 +       .offset = 0,
  43 +       .stride = 0x1000,
  44 +};
  45 +
  46  static const struct of_device_id qcom_hwspinlock_of_match[] = {
  47 -       { .compatible = "qcom,sfpb-mutex" },
  48 -       { .compatible = "qcom,tcsr-mutex" },
  49 +       { .compatible = "qcom,sfpb-mutex", .data = &of_sfpb_mutex },
  50 +       { .compatible = "qcom,tcsr-mutex", .data = &of_tcsr_mutex },
  51         { }
  52  };
  53  MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match);
  54 @@ -112,12 +128,14 @@ static const struct regmap_config tcsr_m
  55  static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev,
  56                                                  u32 *offset, u32 *stride)
  57  {
  58 +       const struct qcom_hwspinlock_of_data *data;
  59         struct device *dev = &pdev->dev;
  60         void __iomem *base;
  61
  62 -       /* All modern platform has offset 0 and stride of 4k */
  63 -       *offset = 0;
  64 -       *stride = 0x1000;
  65 +       data = of_device_get_match_data(dev);
  66 +
  67 +       *offset = data->offset;
  68 +       *stride = data->stride;
  69
  70         base = devm_platform_ioremap_resource(pdev, 0);
  71         if (IS_ERR(base))