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

   1 From 4d219b15a7a01a14c1be1eeee9a939732130d30a Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Tue, 13 Aug 2024 13:45:54 +0100
   4 Subject: [PATCH 1242/1350] spi: rp2040-gpio-bridge: Add debugfs progress
   5  indicator
   6
   7 Useful for tracking upload progress via userspace.
   8
   9 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  10 ---
  11  drivers/spi/spi-rp2040-gpio-bridge.c | 24 ++++++++++++++++++++++++
  12  1 file changed, 24 insertions(+)
  13
  14 --- a/drivers/spi/spi-rp2040-gpio-bridge.c
  15 +++ b/drivers/spi/spi-rp2040-gpio-bridge.c
  16 @@ -6,6 +6,7 @@
  17   */
  18
  19  #include <crypto/hash.h>
  20 +#include <linux/debugfs.h>
  21  #include <linux/crypto.h>
  22  #include <linux/delay.h>
  23  #include <linux/firmware.h>
  24 @@ -91,6 +92,9 @@ enum rp2040_gbdg_fixed_size_commands {
  25  struct rp2040_gbdg {
  26         struct spi_controller *controller;
  27
  28 +       struct dentry *debugfs;
  29 +       size_t transfer_progress;
  30 +
  31         struct i2c_client *client;
  32         struct crypto_shash *shash;
  33         struct shash_desc *shash_desc;
  34 @@ -702,6 +706,7 @@ static int rp2040_gbdg_transfer_cached(s
  35                         return 0;
  36         }
  37
  38 +       priv_data->transfer_progress = 0;
  39         while (length) {
  40                 unsigned int xfer = min(length, RP2040_GBDG_BLOCK_SIZE);
  41
  42 @@ -710,7 +715,9 @@ static int rp2040_gbdg_transfer_cached(s
  43                         return ret;
  44                 length -= xfer;
  45                 data += xfer;
  46 +               priv_data->transfer_progress += xfer;
  47         }
  48 +       priv_data->transfer_progress = 0;
  49
  50         return 0;
  51  }
  52 @@ -1016,6 +1023,16 @@ static int rp2040_gbdg_power_on(struct r
  53         return 0;
  54  }
  55
  56 +static int transfer_progress_show(struct seq_file *s, void *data)
  57 +{
  58 +       struct rp2040_gbdg *rp2040_gbdg = s->private;
  59 +
  60 +       seq_printf(s, "%zu\n", rp2040_gbdg->transfer_progress);
  61 +       return 0;
  62 +}
  63 +
  64 +DEFINE_SHOW_ATTRIBUTE(transfer_progress);
  65 +
  66  static int rp2040_gbdg_probe(struct i2c_client *client)
  67  {
  68         struct rp2040_gbdg_device_info info;
  69 @@ -1023,6 +1040,7 @@ static int rp2040_gbdg_probe(struct i2c_
  70         struct device *dev = &client->dev;
  71         struct rp2040_gbdg *rp2040_gbdg;
  72         struct device_node *np;
  73 +       char debugfs_name[128];
  74         int ret;
  75
  76         np = dev->of_node;
  77 @@ -1136,6 +1154,12 @@ static int rp2040_gbdg_probe(struct i2c_
  78
  79         rp2040_gbdg_parse_dt(rp2040_gbdg);
  80
  81 +       snprintf(debugfs_name, sizeof(debugfs_name), "rp2040-spi:%s",
  82 +                dev_name(dev));
  83 +       rp2040_gbdg->debugfs = debugfs_create_dir(debugfs_name, NULL);
  84 +       debugfs_create_file("transfer_progress", 0444, rp2040_gbdg->debugfs,
  85 +                           rp2040_gbdg, &transfer_progress_fops);
  86 +
  87         pm_runtime_mark_last_busy(dev);
  88         pm_runtime_put_autosuspend(dev);
  89