Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted

Pull pin control updates from Linus Walleij:
 "Core changes:

   - Use the non-blocking mux_state_try_select() in the generic MUX pin
     control back-end

   - Free pin maps on pinctrl_generic_to_map() failure in the core
     helpers

  New hardware pin control:

   - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
     (this is for the low power audio, LPASS = Low Power Audio SubSystem
     portions)

   - Upboard support on top of the Intel pin controller

   - Apple T6030 and T6031 support (just compatible strings)

   - Samsung Exynos 8855 SoC

   - Mediatek MT6858 SoC

   - Rockchip RK3308B and RV1106 SoCs

   - Airoha EN7523 and AN7563 SoCs

  Improvements:

   - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable

   - Qualcomm improvements on top of the Qualcomm PDC (power domain
     controller) irqchip improvements from tglx:s tree

   - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups

   - The NPCM8xx driver has been put into shape fixing many pin and
     group definitions

   - Some non-urgent Tegra 264 pin assignments are fixed up

   - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
     pin assignments, missing features etc"

* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
  dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
  pinctrl: meson: sync some modify from A4
  pinctrl: meson: a4: Add input enable pin configuration
  pinctrl: realtek: rtd1625: remove unused group name spdif_sel
  pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
  dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
  Revert "Merge branch 'ib-rsk7204' into devel"
  pinctrl: rockchip: Add RV1106 pinctrl support
  dt-bindings: pinctrl: rockchip: Add RV1106 compatible
  pinctrl: rockchip: Decode drive strength in the get function
  pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
  pinctrl: airoha: add support of an7563 SoC
  dt-bindings: pinctrl: airoha: add support of an7563 pin controller
  pinctrl: airoha: try to find chip scu node by phandle first
  pinctrl: airoha: add support of en7523 SoC
  dt-bindings: pinctrl: airoha: add support of en7523 pin controller
  pinctrl: airoha: an7583: add support for olt pinmux
  pinctrl: airoha: an7583: add support for pon_alt pinmux
  pinctrl: airoha: an7583: add support for npu_uart pinmux
  dt-bindings: pinctrl: airoha: an7583: add missed features
  ...

1 files changed, 365 insertions, 0 deletions

diff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c
new file mode 100644
index 000000000..40bc4ce6a
--- /dev/null
+++ b/fs/affs/bitmap.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/fs/affs/bitmap.c
+ *
+ *  (c) 1996 Hans-Joachim Widmaier
+ *
+ *  bitmap.c contains the code that handles all bitmap related stuff -
+ *  block allocation, deallocation, calculation of free space.
+ */
+
+#include <linux/slab.h>
+#include "affs.h"
+
+u32
+affs_count_free_blocks(struct super_block *sb)
+{
+	struct affs_bm_info *bm;
+	u32 free;
+	int i;
+
+	pr_debug("%s()\n", __func__);
+
+	if (sb_rdonly(sb))
+		return 0;
+
+	mutex_lock(&AFFS_SB(sb)->s_bmlock);
+
+	bm = AFFS_SB(sb)->s_bitmap;
+	free = 0;
+	for (i = AFFS_SB(sb)->s_bmap_count; i > 0; bm++, i--)
+		free += bm->bm_free;
+
+	mutex_unlock(&AFFS_SB(sb)->s_bmlock);
+
+	return free;
+}
+
+void
+affs_free_block(struct super_block *sb, u32 block)
+{
+	struct affs_sb_info *sbi = AFFS_SB(sb);
+	struct affs_bm_info *bm;
+	struct buffer_head *bh;
+	u32 blk, bmap, bit, mask, tmp;
+	__be32 *data;
+
+	pr_debug("%s(%u)\n", __func__, block);
+
+	if (block > sbi->s_partition_size)
+		goto err_range;
+
+	blk     = block - sbi->s_reserved;
+	bmap    = blk / sbi->s_bmap_bits;
+	bit     = blk % sbi->s_bmap_bits;
+	bm      = &sbi->s_bitmap[bmap];
+
+	mutex_lock(&sbi->s_bmlock);
+
+	bh = sbi->s_bmap_bh;
+	if (sbi->s_last_bmap != bmap) {
+		affs_brelse(bh);
+		bh = affs_bread(sb, bm->bm_key);
+		if (!bh)
+			goto err_bh_read;
+		sbi->s_bmap_bh = bh;
+		sbi->s_last_bmap = bmap;
+	}
+
+	mask = 1 << (bit & 31);
+	data = (__be32 *)bh->b_data + bit / 32 + 1;
+
+	/* mark block free */
+	tmp = be32_to_cpu(*data);
+	if (tmp & mask)
+		goto err_free;
+	*data = cpu_to_be32(tmp | mask);
+
+	/* fix checksum */
+	tmp = be32_to_cpu(*(__be32 *)bh->b_data);
+	*(__be32 *)bh->b_data = cpu_to_be32(tmp - mask);
+
+	mark_buffer_dirty(bh);
+	affs_mark_sb_dirty(sb);
+	bm->bm_free++;
+
+	mutex_unlock(&sbi->s_bmlock);
+	return;
+
+err_free:
+	affs_warning(sb,"affs_free_block","Trying to free block %u which is already free", block);
+	mutex_unlock(&sbi->s_bmlock);
+	return;
+
+err_bh_read:
+	affs_error(sb,"affs_free_block","Cannot read bitmap block %u", bm->bm_key);
+	sbi->s_bmap_bh = NULL;
+	sbi->s_last_bmap = ~0;
+	mutex_unlock(&sbi->s_bmlock);
+	return;
+
+err_range:
+	affs_error(sb, "affs_free_block","Block %u outside partition", block);
+}
+
+/*
+ * Allocate a block in the given allocation zone.
+ * Since we have to byte-swap the bitmap on little-endian
+ * machines, this is rather expensive. Therefore we will
+ * preallocate up to 16 blocks from the same word, if
+ * possible. We are not doing preallocations in the
+ * header zone, though.
+ */
+
+u32
+affs_alloc_block(struct inode *inode, u32 goal)
+{
+	struct super_block *sb;
+	struct affs_sb_info *sbi;
+	struct affs_bm_info *bm;
+	struct buffer_head *bh;
+	__be32 *data, *enddata;
+	u32 blk, bmap, bit, mask, mask2, tmp;
+	int i;
+
+	sb = inode->i_sb;
+	sbi = AFFS_SB(sb);
+
+	pr_debug("balloc(inode=%llu,goal=%u): ", inode->i_ino, goal);
+
+	if (AFFS_I(inode)->i_pa_cnt) {
+		pr_debug("%d\n", AFFS_I(inode)->i_lastalloc+1);
+		AFFS_I(inode)->i_pa_cnt--;
+		return ++AFFS_I(inode)->i_lastalloc;
+	}
+
+	if (!goal || goal > sbi->s_partition_size) {
+		if (goal)
+			affs_warning(sb, "affs_balloc", "invalid goal %d", goal);
+		//if (!AFFS_I(inode)->i_last_block)
+		//	affs_warning(sb, "affs_balloc", "no last alloc block");
+		goal = sbi->s_reserved;
+	}
+
+	blk = goal - sbi->s_reserved;
+	bmap = blk / sbi->s_bmap_bits;
+	bm = &sbi->s_bitmap[bmap];
+
+	mutex_lock(&sbi->s_bmlock);
+
+	if (bm->bm_free)
+		goto find_bmap_bit;
+
+find_bmap:
+	/* search for the next bmap buffer with free bits */
+	i = sbi->s_bmap_count;
+	do {
+		if (--i < 0)
+			goto err_full;
+		bmap++;
+		bm++;
+		if (bmap < sbi->s_bmap_count)
+			continue;
+		/* restart search at zero */
+		bmap = 0;
+		bm = sbi->s_bitmap;
+	} while (!bm->bm_free);
+	blk = bmap * sbi->s_bmap_bits;
+
+find_bmap_bit:
+
+	bh = sbi->s_bmap_bh;
+	if (sbi->s_last_bmap != bmap) {
+		affs_brelse(bh);
+		bh = affs_bread(sb, bm->bm_key);
+		if (!bh)
+			goto err_bh_read;
+		sbi->s_bmap_bh = bh;
+		sbi->s_last_bmap = bmap;
+	}
+
+	/* find an unused block in this bitmap block */
+	bit = blk % sbi->s_bmap_bits;
+	data = (__be32 *)bh->b_data + bit / 32 + 1;
+	enddata = (__be32 *)((u8 *)bh->b_data + sb->s_blocksize);
+	mask = ~0UL << (bit & 31);
+	blk &= ~31UL;
+
+	tmp = be32_to_cpu(*data);
+	if (tmp & mask)
+		goto find_bit;
+
+	/* scan the rest of the buffer */
+	do {
+		blk += 32;
+		if (++data >= enddata)
+			/* didn't find something, can only happen
+			 * if scan didn't start at 0, try next bmap
+			 */
+			goto find_bmap;
+	} while (!*data);
+	tmp = be32_to_cpu(*data);
+	mask = ~0;
+
+find_bit:
+	/* finally look for a free bit in the word */
+	bit = ffs(tmp & mask) - 1;
+	blk += bit + sbi->s_reserved;
+	mask2 = mask = 1 << (bit & 31);
+	AFFS_I(inode)->i_lastalloc = blk;
+
+	/* prealloc as much as possible within this word */
+	while ((mask2 <<= 1)) {
+		if (!(tmp & mask2))
+			break;
+		AFFS_I(inode)->i_pa_cnt++;
+		mask |= mask2;
+	}
+	bm->bm_free -= AFFS_I(inode)->i_pa_cnt + 1;
+
+	*data = cpu_to_be32(tmp & ~mask);
+
+	/* fix checksum */
+	tmp = be32_to_cpu(*(__be32 *)bh->b_data);
+	*(__be32 *)bh->b_data = cpu_to_be32(tmp + mask);
+
+	mark_buffer_dirty(bh);
+	affs_mark_sb_dirty(sb);
+
+	mutex_unlock(&sbi->s_bmlock);
+
+	pr_debug("%d\n", blk);
+	return blk;
+
+err_bh_read:
+	affs_error(sb,"affs_read_block","Cannot read bitmap block %u", bm->bm_key);
+	sbi->s_bmap_bh = NULL;
+	sbi->s_last_bmap = ~0;
+err_full:
+	mutex_unlock(&sbi->s_bmlock);
+	pr_debug("failed\n");
+	return 0;
+}
+
+int affs_init_bitmap(struct super_block *sb, int *flags)
+{
+	struct affs_bm_info *bm;
+	struct buffer_head *bmap_bh = NULL, *bh = NULL;
+	__be32 *bmap_blk;
+	u32 size, blk, end, offset, mask;
+	int i, res = 0;
+	struct affs_sb_info *sbi = AFFS_SB(sb);
+
+	if (*flags & SB_RDONLY)
+		return 0;
+
+	if (!AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag) {
+		pr_notice("Bitmap invalid - mounting %s read only\n", sb->s_id);
+		*flags |= SB_RDONLY;
+		return 0;
+	}
+
+	sbi->s_last_bmap = ~0;
+	sbi->s_bmap_bh = NULL;
+	sbi->s_bmap_bits = sb->s_blocksize * 8 - 32;
+	sbi->s_bmap_count = (sbi->s_partition_size - sbi->s_reserved +
+				 sbi->s_bmap_bits - 1) / sbi->s_bmap_bits;
+	size = sbi->s_bmap_count * sizeof(*bm);
+	bm = sbi->s_bitmap = kzalloc(size, GFP_KERNEL);
+	if (!sbi->s_bitmap) {
+		pr_err("Bitmap allocation failed\n");
+		return -ENOMEM;
+	}
+
+	bmap_blk = (__be32 *)sbi->s_root_bh->b_data;
+	blk = sb->s_blocksize / 4 - 49;
+	end = blk + 25;
+
+	for (i = sbi->s_bmap_count; i > 0; bm++, i--) {
+		affs_brelse(bh);
+
+		bm->bm_key = be32_to_cpu(bmap_blk[blk]);
+		bh = affs_bread(sb, bm->bm_key);
+		if (!bh) {
+			pr_err("Cannot read bitmap\n");
+			res = -EIO;
+			goto out;
+		}
+		if (affs_checksum_block(sb, bh)) {
+			pr_warn("Bitmap %u invalid - mounting %s read only.\n",
+				bm->bm_key, sb->s_id);
+			*flags |= SB_RDONLY;
+			goto out;
+		}
+		pr_debug("read bitmap block %d: %d\n", blk, bm->bm_key);
+		bm->bm_free = memweight(bh->b_data + 4, sb->s_blocksize - 4);
+
+		/* Don't try read the extension if this is the last block,
+		 * but we also need the right bm pointer below
+		 */
+		if (++blk < end || i == 1)
+			continue;
+		if (bmap_bh)
+			affs_brelse(bmap_bh);
+		bmap_bh = affs_bread(sb, be32_to_cpu(bmap_blk[blk]));
+		if (!bmap_bh) {
+			pr_err("Cannot read bitmap extension\n");
+			res = -EIO;
+			goto out;
+		}
+		bmap_blk = (__be32 *)bmap_bh->b_data;
+		blk = 0;
+		end = sb->s_blocksize / 4 - 1;
+	}
+
+	offset = (sbi->s_partition_size - sbi->s_reserved) % sbi->s_bmap_bits;
+	mask = ~(0xFFFFFFFFU << (offset & 31));
+	pr_debug("last word: %d %d %d\n", offset, offset / 32 + 1, mask);
+	offset = offset / 32 + 1;
+
+	if (mask) {
+		u32 old, new;
+
+		/* Mark unused bits in the last word as allocated */
+		old = be32_to_cpu(((__be32 *)bh->b_data)[offset]);
+		new = old & mask;
+		//if (old != new) {
+			((__be32 *)bh->b_data)[offset] = cpu_to_be32(new);
+			/* fix checksum */
+			//new -= old;
+			//old = be32_to_cpu(*(__be32 *)bh->b_data);
+			//*(__be32 *)bh->b_data = cpu_to_be32(old - new);
+			//mark_buffer_dirty(bh);
+		//}
+		/* correct offset for the bitmap count below */
+		//offset++;
+	}
+	while (++offset < sb->s_blocksize / 4)
+		((__be32 *)bh->b_data)[offset] = 0;
+	((__be32 *)bh->b_data)[0] = 0;
+	((__be32 *)bh->b_data)[0] = cpu_to_be32(-affs_checksum_block(sb, bh));
+	mark_buffer_dirty(bh);
+
+	/* recalculate bitmap count for last block */
+	bm--;
+	bm->bm_free = memweight(bh->b_data + 4, sb->s_blocksize - 4);
+
+out:
+	affs_brelse(bh);
+	affs_brelse(bmap_bh);
+	return res;
+}
+
+void affs_free_bitmap(struct super_block *sb)
+{
+	struct affs_sb_info *sbi = AFFS_SB(sb);
+
+	if (!sbi->s_bitmap)
+		return;
+
+	affs_brelse(sbi->s_bmap_bh);
+	sbi->s_bmap_bh = NULL;
+	sbi->s_last_bmap = ~0;
+	kfree(sbi->s_bitmap);
+	sbi->s_bitmap = NULL;
+}