irqchip/mmp: Remove non-DT codepath

Building with "W=1" warns about missing declarations for
two functions in the mmp irqchip driver:

drivers/irqchip/irq-mmp.c:248:13: error: no previous prototype for 'icu_init_irq'
drivers/irqchip/irq-mmp.c:271:13: error: no previous prototype for 'mmp2_init_icu'

The declarations are present in an unused header, but since there is no
caller, it's best to just remove the functions and the header completely,
making the driver DT-only to match the state of the platform.

Fixes: 77acc85ce797 ("ARM: mmp: remove device definitions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230516200516.554663-2-arnd@kernel.org

diff --git a/drivers/irqchip/irq-mmp.c b/drivers/irqchip/irq-mmp.c
index 83455ca..25cf4f8 100644 (file)
--- a/drivers/irqchip/irq-mmp.c
+++ b/drivers/irqchip/irq-mmp.c
@@ -244,132 +244,6 @@ static void __exception_irq_entry mmp2_handle_irq(struct pt_regs *regs)
        generic_handle_domain_irq(icu_data[0].domain, hwirq);
 }
 
-/* MMP (ARMv5) */
-void __init icu_init_irq(void)
-{
-       int irq;
-
-       max_icu_nr = 1;
-       mmp_icu_base = ioremap(0xd4282000, 0x1000);
-       icu_data[0].conf_enable = mmp_conf.conf_enable;
-       icu_data[0].conf_disable = mmp_conf.conf_disable;
-       icu_data[0].conf_mask = mmp_conf.conf_mask;
-       icu_data[0].nr_irqs = 64;
-       icu_data[0].virq_base = 0;
-       icu_data[0].domain = irq_domain_add_legacy(NULL, 64, 0, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[0]);
-       for (irq = 0; irq < 64; irq++) {
-               icu_mask_irq(irq_get_irq_data(irq));
-               irq_set_chip_and_handler(irq, &icu_irq_chip, handle_level_irq);
-       }
-       irq_set_default_host(icu_data[0].domain);
-       set_handle_irq(mmp_handle_irq);
-}
-
-/* MMP2 (ARMv7) */
-void __init mmp2_init_icu(void)
-{
-       int irq, end;
-
-       max_icu_nr = 8;
-       mmp_icu_base = ioremap(0xd4282000, 0x1000);
-       icu_data[0].conf_enable = mmp2_conf.conf_enable;
-       icu_data[0].conf_disable = mmp2_conf.conf_disable;
-       icu_data[0].conf_mask = mmp2_conf.conf_mask;
-       icu_data[0].nr_irqs = 64;
-       icu_data[0].virq_base = 0;
-       icu_data[0].domain = irq_domain_add_legacy(NULL, 64, 0, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[0]);
-       icu_data[1].reg_status = mmp_icu_base + 0x150;
-       icu_data[1].reg_mask = mmp_icu_base + 0x168;
-       icu_data[1].clr_mfp_irq_base = icu_data[0].virq_base +
-                               icu_data[0].nr_irqs;
-       icu_data[1].clr_mfp_hwirq = 1;          /* offset to IRQ_MMP2_PMIC_BASE */
-       icu_data[1].nr_irqs = 2;
-       icu_data[1].cascade_irq = 4;
-       icu_data[1].virq_base = icu_data[0].virq_base + icu_data[0].nr_irqs;
-       icu_data[1].domain = irq_domain_add_legacy(NULL, icu_data[1].nr_irqs,
-                                                  icu_data[1].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[1]);
-       icu_data[2].reg_status = mmp_icu_base + 0x154;
-       icu_data[2].reg_mask = mmp_icu_base + 0x16c;
-       icu_data[2].nr_irqs = 2;
-       icu_data[2].cascade_irq = 5;
-       icu_data[2].virq_base = icu_data[1].virq_base + icu_data[1].nr_irqs;
-       icu_data[2].domain = irq_domain_add_legacy(NULL, icu_data[2].nr_irqs,
-                                                  icu_data[2].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[2]);
-       icu_data[3].reg_status = mmp_icu_base + 0x180;
-       icu_data[3].reg_mask = mmp_icu_base + 0x17c;
-       icu_data[3].nr_irqs = 3;
-       icu_data[3].cascade_irq = 9;
-       icu_data[3].virq_base = icu_data[2].virq_base + icu_data[2].nr_irqs;
-       icu_data[3].domain = irq_domain_add_legacy(NULL, icu_data[3].nr_irqs,
-                                                  icu_data[3].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[3]);
-       icu_data[4].reg_status = mmp_icu_base + 0x158;
-       icu_data[4].reg_mask = mmp_icu_base + 0x170;
-       icu_data[4].nr_irqs = 5;
-       icu_data[4].cascade_irq = 17;
-       icu_data[4].virq_base = icu_data[3].virq_base + icu_data[3].nr_irqs;
-       icu_data[4].domain = irq_domain_add_legacy(NULL, icu_data[4].nr_irqs,
-                                                  icu_data[4].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[4]);
-       icu_data[5].reg_status = mmp_icu_base + 0x15c;
-       icu_data[5].reg_mask = mmp_icu_base + 0x174;
-       icu_data[5].nr_irqs = 15;
-       icu_data[5].cascade_irq = 35;
-       icu_data[5].virq_base = icu_data[4].virq_base + icu_data[4].nr_irqs;
-       icu_data[5].domain = irq_domain_add_legacy(NULL, icu_data[5].nr_irqs,
-                                                  icu_data[5].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[5]);
-       icu_data[6].reg_status = mmp_icu_base + 0x160;
-       icu_data[6].reg_mask = mmp_icu_base + 0x178;
-       icu_data[6].nr_irqs = 2;
-       icu_data[6].cascade_irq = 51;
-       icu_data[6].virq_base = icu_data[5].virq_base + icu_data[5].nr_irqs;
-       icu_data[6].domain = irq_domain_add_legacy(NULL, icu_data[6].nr_irqs,
-                                                  icu_data[6].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[6]);
-       icu_data[7].reg_status = mmp_icu_base + 0x188;
-       icu_data[7].reg_mask = mmp_icu_base + 0x184;
-       icu_data[7].nr_irqs = 2;
-       icu_data[7].cascade_irq = 55;
-       icu_data[7].virq_base = icu_data[6].virq_base + icu_data[6].nr_irqs;
-       icu_data[7].domain = irq_domain_add_legacy(NULL, icu_data[7].nr_irqs,
-                                                  icu_data[7].virq_base, 0,
-                                                  &irq_domain_simple_ops,
-                                                  &icu_data[7]);
-       end = icu_data[7].virq_base + icu_data[7].nr_irqs;
-       for (irq = 0; irq < end; irq++) {
-               icu_mask_irq(irq_get_irq_data(irq));
-               if (irq == icu_data[1].cascade_irq ||
-                   irq == icu_data[2].cascade_irq ||
-                   irq == icu_data[3].cascade_irq ||
-                   irq == icu_data[4].cascade_irq ||
-                   irq == icu_data[5].cascade_irq ||
-                   irq == icu_data[6].cascade_irq ||
-                   irq == icu_data[7].cascade_irq) {
-                       irq_set_chip(irq, &icu_irq_chip);
-                       irq_set_chained_handler(irq, icu_mux_irq_demux);
-               } else {
-                       irq_set_chip_and_handler(irq, &icu_irq_chip,
-                                                handle_level_irq);
-               }
-       }
-       irq_set_default_host(icu_data[0].domain);
-       set_handle_irq(mmp2_handle_irq);
-}
-
-#ifdef CONFIG_OF
 static int __init mmp_init_bases(struct device_node *node)
 {
        int ret, nr_irqs, irq, i = 0;
@@ -548,4 +422,3 @@ err:
        return -EINVAL;
 }
 IRQCHIP_DECLARE(mmp2_mux_intc, "mrvl,mmp2-mux-intc", mmp2_mux_of_init);
-#endif

diff --git a/include/linux/irqchip/mmp.h b/include/linux/irqchip/mmp.h
deleted file mode 100644 (file)
index aa18137..0000000
--- a/include/linux/irqchip/mmp.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef        __IRQCHIP_MMP_H
-#define        __IRQCHIP_MMP_H
-
-extern struct irq_chip icu_irq_chip;
-
-extern void icu_init_irq(void);
-extern void mmp2_init_icu(void);
-
-#endif /* __IRQCHIP_MMP_H */