target/linux/bcm27xx/patches-5.4/950-0331-Revert-pinctrl-bcm2835-Pass-irqchip-when-adding-gpio.patch

   1 From b1d33d1e5a44afd2025c5a44a85dc2fab00ec6a7 Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Tue, 5 Nov 2019 11:28:19 +0000
   4 Subject: [PATCH] Revert "pinctrl: bcm2835: Pass irqchip when adding
   5  gpiochip"
   6
   7 This reverts commit 73345a18d464b1b945b29f54f630ace6873344e2.
   8 ---
   9  drivers/pinctrl/bcm/pinctrl-bcm2835.c | 55 +++++++++++++++------------
  10  1 file changed, 30 insertions(+), 25 deletions(-)
  11
  12 --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
  13 +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
  14 @@ -78,6 +78,7 @@
  15  struct bcm2835_pinctrl {
  16         struct device *dev;
  17         void __iomem *base;
  18 +       int irq[BCM2835_NUM_IRQS];
  19
  20         /* note: locking assumes each bank will have its own unsigned long */
  21         unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
  22 @@ -381,14 +382,14 @@ static void bcm2835_gpio_irq_handler(str
  23         int group;
  24         int i;
  25
  26 -       for (i = 0; i < BCM2835_NUM_IRQS; i++) {
  27 -               if (chip->irq.parents[i] == irq) {
  28 +       for (i = 0; i < ARRAY_SIZE(pc->irq); i++) {
  29 +               if (pc->irq[i] == irq) {
  30                         group = i;
  31                         break;
  32                 }
  33         }
  34         /* This should not happen, every IRQ has a bank */
  35 -       if (i == BCM2835_NUM_IRQS)
  36 +       if (i == ARRAY_SIZE(pc->irq))
  37                 BUG();
  38
  39         chained_irq_enter(host_chip, desc);
  40 @@ -1086,7 +1087,6 @@ static int bcm2835_pinctrl_probe(struct
  41         struct device *dev = &pdev->dev;
  42         struct device_node *np = dev->of_node;
  43         struct bcm2835_pinctrl *pc;
  44 -       struct gpio_irq_chip *girq;
  45         struct resource iomem;
  46         int err, i;
  47         const struct of_device_id *match;
  48 @@ -1135,33 +1135,38 @@ static int bcm2835_pinctrl_probe(struct
  49                 raw_spin_lock_init(&pc->irq_lock[i]);
  50         }
  51
  52 -       girq = &pc->gpio_chip.irq;
  53 -       girq->chip = &bcm2835_gpio_irq_chip;
  54 -       girq->parent_handler = bcm2835_gpio_irq_handler;
  55 -       girq->num_parents = BCM2835_NUM_IRQS;
  56 -       girq->parents = devm_kcalloc(dev, BCM2835_NUM_IRQS,
  57 -                                    sizeof(*girq->parents),
  58 -                                    GFP_KERNEL);
  59 -       if (!girq->parents)
  60 -               return -ENOMEM;
  61 -       /*
  62 -        * Use the same handler for all groups: this is necessary
  63 -        * since we use one gpiochip to cover all lines - the
  64 -        * irq handler then needs to figure out which group and
  65 -        * bank that was firing the IRQ and look up the per-group
  66 -        * and bank data.
  67 -        */
  68 -       for (i = 0; i < BCM2835_NUM_IRQS; i++)
  69 -               girq->parents[i] = irq_of_parse_and_map(np, i);
  70 -       girq->default_type = IRQ_TYPE_NONE;
  71 -       girq->handler = handle_level_irq;
  72 -
  73         err = gpiochip_add_data(&pc->gpio_chip, pc);
  74         if (err) {
  75                 dev_err(dev, "could not add GPIO chip\n");
  76                 return err;
  77         }
  78
  79 +       err = gpiochip_irqchip_add(&pc->gpio_chip, &bcm2835_gpio_irq_chip,
  80 +                                  0, handle_level_irq, IRQ_TYPE_NONE);
  81 +       if (err) {
  82 +               dev_info(dev, "could not add irqchip\n");
  83 +               return err;
  84 +       }
  85 +
  86 +       for (i = 0; i < BCM2835_NUM_IRQS; i++) {
  87 +               pc->irq[i] = irq_of_parse_and_map(np, i);
  88 +
  89 +               if (pc->irq[i] == 0)
  90 +                       continue;
  91 +
  92 +               /*
  93 +                * Use the same handler for all groups: this is necessary
  94 +                * since we use one gpiochip to cover all lines - the
  95 +                * irq handler then needs to figure out which group and
  96 +                * bank that was firing the IRQ and look up the per-group
  97 +                * and bank data.
  98 +                */
  99 +               gpiochip_set_chained_irqchip(&pc->gpio_chip,
 100 +                                            &bcm2835_gpio_irq_chip,
 101 +                                            pc->irq[i],
 102 +                                            bcm2835_gpio_irq_handler);
 103 +       }
 104 +
 105         match = of_match_node(bcm2835_pinctrl_match, pdev->dev.of_node);
 106         if (match) {
 107                 bcm2835_pinctrl_desc.confops =