From 6096935dbf755b6f958694f8659d6a021fe968f5 Mon Sep 17 00:00:00 2001
From: Michael Schmitz <schmitz@xxxxxxxxxx>
Date: Mon, 30 Apr 2012 20:10:22 +1200
Subject: [PATCH 05/11] [m68k] Atari: add platform support for EtherNEC (conditionalized)
---
arch/m68k/atari/config.c | 69 ++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 67 insertions(+), 2 deletions(-)
diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c
index 9a83537..87c640b 100644
--- a/arch/m68k/atari/config.c
+++ b/arch/m68k/atari/config.c
@@ -690,10 +690,47 @@ static struct platform_device *atari_ethernat_devices[] __initdata = {
&smc91x_device
};
+#define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000
+#define ATARI_ETHERNEC_BASE 0x300
+#define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMD
+
+static struct resource rtl8019_resources[] = {
+ [0] = {
+ .name = "rtl9019-regs",
+ .start = ATARI_ETHERNEC_BASE,
+ .end = ATARI_ETHERNEC_BASE + 0x20 - 1,
+ .flags = IORESOURCE_IO,
+ },
+ [1] = {
+ .name = "rtl9019-irq",
+ .start = ATARI_ETHERNEC_IRQ,
+ .end = ATARI_ETHERNEC_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device rtl8019_device = {
+ .name = "ne",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(rtl8019_resources),
+ .resource = rtl8019_resources,
+};
+
+static struct platform_device *atari_ethernec_devices[] __initdata = {
+ &rtl8019_device
+};
+
+#if IS_ENABLED(CONFIG_ATARI_ETHERNEC) || IS_ENABLED(CONFIG_ATARI_ETHERNEC_OLD)
+irqreturn_t atari_timerd_interrupt(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+#endif
+
int __init atari_platform_init(void)
{
- unsigned char *enatc_virt;
- int rv = -ENODEV;
+ unsigned char *enatc_virt, *enec_virt;
+ int rv = -ENODEV, rv2 = -ENODEV, need_timer = 0;
if (!MACH_IS_ATARI)
return -ENODEV;
@@ -706,6 +743,34 @@ int __init atari_platform_init(void)
}
#endif
+#if IS_ENABLED(CONFIG_ATARI_ETHERNEC) || IS_ENABLED(CONFIG_ATARI_ETHERNEC_OLD)
+ enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
+ if (hwreg_present(enec_virt)) {
+ need_timer = 1;
+ rv2 = platform_add_devices(atari_ethernec_devices, ARRAY_SIZE(atari_ethernec_devices));
+ }
+ iounmap(enec_virt);
+#endif
+
+ if (need_timer) {
+ int ret;
+ const char *name = "Timer D dummy interrupt";
+
+ /* timer routine set up in atari_ethernec_probe() */
+ /* set Timer D data Register */
+ st_mfp.tim_dt_d = 123; /* 200 Hz */
+ /* start timer D, div = 1:100 */
+ st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 0xf0) | 0x6;
+ /* Must make this shared in case other timer ints are needed */
+ ret = request_irq(IRQ_MFP_TIMD, atari_timerd_interrupt, IRQF_SHARED, name, atari_timerd_interrupt);
+ if (ret) {
+ printk(KERN_ERR "atari_platform_init: failed to register dummy timer interrupt for EtherNEC/EtherNAT!\n");
+ }
+ }
+
+ if (rv2)
+ return rv2;
+
return rv;
}
--
1.7.0.4
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