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@@ -475,3 +475,192 @@ void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
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case _HWMOD_STATE_DISABLED:
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/* Use safe mode unless OMAP_DEVICE_PAD_REMUX */
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if (flags & OMAP_DEVICE_PAD_REMUX)
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+ val = pad->off;
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+ else
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+ val = OMAP_MUX_MODE7;
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+ pr_debug("%s: Disabling %s %x\n", __func__,
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+ pad->name, val);
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+ break;
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+ default:
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+ /* Nothing to be done */
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+ break;
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+ }
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+
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+ if (val >= 0) {
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+ omap_mux_write(pad->partition, val,
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+ pad->mux->reg_offset);
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+ pad->flags = flags;
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+ }
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+ }
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+
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+ if (state == _HWMOD_STATE_ENABLED)
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+ hmux->enabled = true;
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+ else
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+ hmux->enabled = false;
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+}
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+
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+#ifdef CONFIG_DEBUG_FS
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+
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+#define OMAP_MUX_MAX_NR_FLAGS 10
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+#define OMAP_MUX_TEST_FLAG(val, mask) \
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+ if (((val) & (mask)) == (mask)) { \
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+ i++; \
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+ flags[i] = #mask; \
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+ }
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+
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+/* REVISIT: Add checking for non-optimal mux settings */
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+static inline void omap_mux_decode(struct seq_file *s, u16 val)
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+{
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+ char *flags[OMAP_MUX_MAX_NR_FLAGS];
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+ char mode[sizeof("OMAP_MUX_MODE") + 1];
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+ int i = -1;
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+
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+ sprintf(mode, "OMAP_MUX_MODE%d", val & 0x7);
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+ i++;
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+ flags[i] = mode;
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+
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+ OMAP_MUX_TEST_FLAG(val, OMAP_PIN_OFF_WAKEUPENABLE);
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+ if (val & OMAP_OFF_EN) {
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+ if (!(val & OMAP_OFFOUT_EN)) {
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+ if (!(val & OMAP_OFF_PULL_UP)) {
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+ OMAP_MUX_TEST_FLAG(val,
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+ OMAP_PIN_OFF_INPUT_PULLDOWN);
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+ } else {
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+ OMAP_MUX_TEST_FLAG(val,
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+ OMAP_PIN_OFF_INPUT_PULLUP);
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+ }
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+ } else {
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+ if (!(val & OMAP_OFFOUT_VAL)) {
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+ OMAP_MUX_TEST_FLAG(val,
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+ OMAP_PIN_OFF_OUTPUT_LOW);
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+ } else {
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+ OMAP_MUX_TEST_FLAG(val,
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+ OMAP_PIN_OFF_OUTPUT_HIGH);
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+ }
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+ }
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+ }
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+
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+ if (val & OMAP_INPUT_EN) {
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+ if (val & OMAP_PULL_ENA) {
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+ if (!(val & OMAP_PULL_UP)) {
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+ OMAP_MUX_TEST_FLAG(val,
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+ OMAP_PIN_INPUT_PULLDOWN);
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+ } else {
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+ OMAP_MUX_TEST_FLAG(val, OMAP_PIN_INPUT_PULLUP);
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+ }
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+ } else {
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+ OMAP_MUX_TEST_FLAG(val, OMAP_PIN_INPUT);
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+ }
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+ } else {
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+ i++;
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+ flags[i] = "OMAP_PIN_OUTPUT";
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+ }
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+
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+ do {
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+ seq_printf(s, "%s", flags[i]);
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+ if (i > 0)
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+ seq_printf(s, " | ");
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+ } while (i-- > 0);
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+}
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+
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+#define OMAP_MUX_DEFNAME_LEN 32
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+
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+static int omap_mux_dbg_board_show(struct seq_file *s, void *unused)
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+{
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+ struct omap_mux_partition *partition = s->private;
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+ struct omap_mux_entry *e;
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+ u8 omap_gen = omap_rev() >> 28;
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+
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+ list_for_each_entry(e, &partition->muxmodes, node) {
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+ struct omap_mux *m = &e->mux;
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+ char m0_def[OMAP_MUX_DEFNAME_LEN];
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+ char *m0_name = m->muxnames[0];
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+ u16 val;
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+ int i, mode;
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+
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+ if (!m0_name)
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+ continue;
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+
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+ /* REVISIT: Needs to be updated if mode0 names get longer */
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+ for (i = 0; i < OMAP_MUX_DEFNAME_LEN; i++) {
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+ if (m0_name[i] == '\0') {
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+ m0_def[i] = m0_name[i];
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+ break;
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+ }
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+ m0_def[i] = toupper(m0_name[i]);
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+ }
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+ val = omap_mux_read(partition, m->reg_offset);
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+ mode = val & OMAP_MUX_MODE7;
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+ if (mode != 0)
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+ seq_printf(s, "/* %s */\n", m->muxnames[mode]);
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+
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+ /*
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+ * XXX: Might be revisited to support differences across
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+ * same OMAP generation.
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+ */
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+ seq_printf(s, "OMAP%d_MUX(%s, ", omap_gen, m0_def);
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+ omap_mux_decode(s, val);
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+ seq_printf(s, "),\n");
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+ }
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+
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+ return 0;
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+}
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+
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+static int omap_mux_dbg_board_open(struct inode *inode, struct file *file)
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+{
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+ return single_open(file, omap_mux_dbg_board_show, inode->i_private);
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+}
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+
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+static const struct file_operations omap_mux_dbg_board_fops = {
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+ .open = omap_mux_dbg_board_open,
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+ .read = seq_read,
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+ .llseek = seq_lseek,
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+ .release = single_release,
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+};
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+
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+static struct omap_mux_partition *omap_mux_get_partition(struct omap_mux *mux)
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+{
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+ struct omap_mux_partition *partition;
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+
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+ list_for_each_entry(partition, &mux_partitions, node) {
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+ struct list_head *muxmodes = &partition->muxmodes;
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+ struct omap_mux_entry *e;
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+
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+ list_for_each_entry(e, muxmodes, node) {
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+ struct omap_mux *m = &e->mux;
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+
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+ if (m == mux)
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+ return partition;
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+ }
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+ }
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+
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+ return NULL;
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+}
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+
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+static int omap_mux_dbg_signal_show(struct seq_file *s, void *unused)
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+{
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+ struct omap_mux *m = s->private;
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+ struct omap_mux_partition *partition;
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+ const char *none = "NA";
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+ u16 val;
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+ int mode;
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+
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+ partition = omap_mux_get_partition(m);
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+ if (!partition)
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+ return 0;
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+
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+ val = omap_mux_read(partition, m->reg_offset);
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+ mode = val & OMAP_MUX_MODE7;
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+
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+ seq_printf(s, "name: %s.%s (0x%08x/0x%03x = 0x%04x), b %s, t %s\n",
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+ m->muxnames[0], m->muxnames[mode],
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+ partition->phys + m->reg_offset, m->reg_offset, val,
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+ m->balls[0] ? m->balls[0] : none,
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+ m->balls[1] ? m->balls[1] : none);
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+ seq_printf(s, "mode: ");
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+ omap_mux_decode(s, val);
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+ seq_printf(s, "\n");
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+ seq_printf(s, "signals: %s | %s | %s | %s | %s | %s | %s | %s\n",
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+ m->muxnames[0] ? m->muxnames[0] : none,
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+ m->muxnames[1] ? m->muxnames[1] : none,
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+ m->muxnames[2] ? m->muxnames[2] : none,
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