Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Toshiba rbtx4938 pci routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2000-2001 Toshiba Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * terms of the GNU General Public License version 2. This program is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * licensed "as is" without any warranty of any kind, whether express
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * or implied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/txx9/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/txx9/rbtx4938.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) int rbtx4938_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	int irq = tx4938_pcic1_map_irq(dev, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (irq >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	irq = pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	/* IRQ rotation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	irq--;	/* 0-3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		/* PCI CardSlot (IDSEL=A23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		/* PCIA => PCIA (IDSEL=A23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		irq = (irq + 0 + slot) % 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		/* PCI Backplane */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 			irq = (irq + 33 - slot) % 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			irq = (irq + 3 + slot) % 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	irq++;	/* 1-4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	switch (irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		irq = RBTX4938_IRQ_IOC_PCIA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		irq = RBTX4938_IRQ_IOC_PCIB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		irq = RBTX4938_IRQ_IOC_PCIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		irq = RBTX4938_IRQ_IOC_PCID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }