pata_pdc202xx_old: implement sff_irq_check() method (606254e3) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/ata/pata_pdc202xx_old.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,27 @@ static void pdc202xx_exec_command(struct ata_port *ap,
		ndelay(400);
		}

		static bool pdc202xx_irq_check(struct ata_port *ap)
		{
		struct pci_dev *pdev = to_pci_dev(ap->host->dev);
		unsigned long master = pci_resource_start(pdev, 4);
		u8 sc1d = inb(master + 0x1d);

		if (ap->port_no) {
		/*
		* bit 7: error, bit 6: interrupting,
		* bit 5: FIFO full, bit 4: FIFO empty
		*/
		return sc1d & 0x40;
		} else {
		/*
		* bit 3: error, bit 2: interrupting,
		* bit 1: FIFO full, bit 0: FIFO empty
		*/
		return sc1d & 0x04;
		}
		}

		/**
		* pdc202xx_configure_piomode - set chip PIO timing
		* @ap: ATA interface
		@@ -282,6 +303,7 @@ static struct ata_port_operations pdc2024x_port_ops = {
		.set_dmamode = pdc202xx_set_dmamode,

		.sff_exec_command = pdc202xx_exec_command,
		.sff_irq_check = pdc202xx_irq_check,
		};

		static struct ata_port_operations pdc2026x_port_ops = {
		@@ -297,6 +319,7 @@ static struct ata_port_operations pdc2026x_port_ops = {
		.port_start = pdc2026x_port_start,

		.sff_exec_command = pdc202xx_exec_command,
		.sff_irq_check = pdc202xx_irq_check,
		};

		static int pdc202xx_init_one(struct pci_dev dev, const struct pci_device_id id)