MIPS: TXx9: Add RBTX4939 board support

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/txx9/rbtx4939/Makefile
 create mode 100644 arch/mips/txx9/rbtx4939/irq.c
 create mode 100644 arch/mips/txx9/rbtx4939/prom.c
 create mode 100644 arch/mips/txx9/rbtx4939/setup.c
 create mode 100644 include/asm-mips/txx9/rbtx4939.h

1 files changed, 306 insertions, 0 deletions

diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
new file mode 100644
index 0000000..277864d
--- /dev/null
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -0,0 +1,306 @@
+/*
+ * Toshiba RBTX4939 setup routines.
+ * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
+ *	    and RBTX49xx patch from CELF patch archive.
+ *
+ * Copyright (C) 2000-2001,2005-2007 Toshiba Corporation
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/reboot.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4939.h>
+
+static void rbtx4939_machine_restart(char *command)
+{
+	local_irq_disable();
+	writeb(1, rbtx4939_reseten_addr);
+	writeb(1, rbtx4939_softreset_addr);
+	while (1)
+		;
+}
+
+static void __init rbtx4939_time_init(void)
+{
+	tx4939_time_init(0);
+}
+
+static void __init rbtx4939_pci_setup(void)
+{
+#ifdef CONFIG_PCI
+	int extarb = !(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB);
+	struct pci_controller *c = &txx9_primary_pcic;
+
+	register_pci_controller(c);
+
+	tx4939_report_pciclk();
+	tx4927_pcic_setup(tx4939_pcicptr, c, extarb);
+	if (!(__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ATA1MODE) &&
+	    (__raw_readq(&tx4939_ccfgptr->pcfg) &
+	     (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE))) {
+		tx4939_report_pci1clk();
+
+		/* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
+		c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
+		register_pci_controller(c);
+		tx4927_pcic_setup(tx4939_pcic1ptr, c, 0);
+	}
+
+	tx4939_setup_pcierr_irq();
+#endif /* CONFIG_PCI */
+}
+
+static unsigned long long default_ebccr[] __initdata = {
+	0x01c0000000007608ULL, /* 64M ROM */
+	0x017f000000007049ULL, /* 1M IOC */
+	0x0180000000408608ULL, /* ISA */
+	0,
+};
+
+static void __init rbtx4939_ebusc_setup(void)
+{
+	int i;
+	unsigned int sp;
+
+	/* use user-configured speed */
+	sp = TX4939_EBUSC_CR(0) & 0x30;
+	default_ebccr[0] |= sp;
+	default_ebccr[1] |= sp;
+	default_ebccr[2] |= sp;
+	/* initialise by myself */
+	for (i = 0; i < ARRAY_SIZE(default_ebccr); i++) {
+		if (default_ebccr[i])
+			____raw_writeq(default_ebccr[i],
+				       &tx4939_ebuscptr->cr[i]);
+		else
+			____raw_writeq(____raw_readq(&tx4939_ebuscptr->cr[i])
+				       & ~8,
+				       &tx4939_ebuscptr->cr[i]);
+	}
+}
+
+static void __init rbtx4939_update_ioc_pen(void)
+{
+	__u64 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
+	__u64 ccfg = ____raw_readq(&tx4939_ccfgptr->ccfg);
+	__u8 pe1 = readb(rbtx4939_pe1_addr);
+	__u8 pe2 = readb(rbtx4939_pe2_addr);
+	__u8 pe3 = readb(rbtx4939_pe3_addr);
+	if (pcfg & TX4939_PCFG_ATA0MODE)
+		pe1 |= RBTX4939_PE1_ATA(0);
+	else
+		pe1 &= ~RBTX4939_PE1_ATA(0);
+	if (pcfg & TX4939_PCFG_ATA1MODE) {
+		pe1 |= RBTX4939_PE1_ATA(1);
+		pe1 &= ~(RBTX4939_PE1_RMII(0) | RBTX4939_PE1_RMII(1));
+	} else {
+		pe1 &= ~RBTX4939_PE1_ATA(1);
+		if (pcfg & TX4939_PCFG_ET0MODE)
+			pe1 |= RBTX4939_PE1_RMII(0);
+		else
+			pe1 &= ~RBTX4939_PE1_RMII(0);
+		if (pcfg & TX4939_PCFG_ET1MODE)
+			pe1 |= RBTX4939_PE1_RMII(1);
+		else
+			pe1 &= ~RBTX4939_PE1_RMII(1);
+	}
+	if (ccfg & TX4939_CCFG_PTSEL)
+		pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
+			 RBTX4939_PE3_VP_S);
+	else {
+		__u64 vmode = pcfg &
+			(TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE);
+		if (vmode == 0)
+			pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
+				 RBTX4939_PE3_VP_S);
+		else if (vmode == TX4939_PCFG_VPSMODE) {
+			pe3 |= RBTX4939_PE3_VP_P;
+			pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_S);
+		} else if (vmode == TX4939_PCFG_VSSMODE) {
+			pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_S;
+			pe3 &= ~RBTX4939_PE3_VP_P;
+		} else {
+			pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_P;
+			pe3 &= ~RBTX4939_PE3_VP_S;
+		}
+	}
+	if (pcfg & TX4939_PCFG_SPIMODE) {
+		if (pcfg & TX4939_PCFG_SIO2MODE_GPIO)
+			pe2 &= ~(RBTX4939_PE2_SIO2 | RBTX4939_PE2_SIO0);
+		else {
+			if (pcfg & TX4939_PCFG_SIO2MODE_SIO2) {
+				pe2 |= RBTX4939_PE2_SIO2;
+				pe2 &= ~RBTX4939_PE2_SIO0;
+			} else {
+				pe2 |= RBTX4939_PE2_SIO0;
+				pe2 &= ~RBTX4939_PE2_SIO2;
+			}
+		}
+		if (pcfg & TX4939_PCFG_SIO3MODE)
+			pe2 |= RBTX4939_PE2_SIO3;
+		else
+			pe2 &= ~RBTX4939_PE2_SIO3;
+		pe2 &= ~RBTX4939_PE2_SPI;
+	} else {
+		pe2 |= RBTX4939_PE2_SPI;
+		pe2 &= ~(RBTX4939_PE2_SIO3 | RBTX4939_PE2_SIO2 |
+			 RBTX4939_PE2_SIO0);
+	}
+	if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_GPIO)
+		pe2 |= RBTX4939_PE2_GPIO;
+	else
+		pe2 &= ~RBTX4939_PE2_GPIO;
+	writeb(pe1, rbtx4939_pe1_addr);
+	writeb(pe2, rbtx4939_pe2_addr);
+	writeb(pe3, rbtx4939_pe3_addr);
+}
+
+#define RBTX4939_MAX_7SEGLEDS	8
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+static u8 led_val[RBTX4939_MAX_7SEGLEDS];
+struct rbtx4939_led_data {
+	struct led_classdev cdev;
+	char name[32];
+	unsigned int num;
+};
+
+/* Use "dot" in 7seg LEDs */
+static void rbtx4939_led_brightness_set(struct led_classdev *led_cdev,
+					enum led_brightness value)
+{
+	struct rbtx4939_led_data *led_dat =
+		container_of(led_cdev, struct rbtx4939_led_data, cdev);
+	unsigned int num = led_dat->num;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	led_val[num] = (led_val[num] & 0x7f) | (value ? 0x80 : 0);
+	writeb(led_val[num], rbtx4939_7seg_addr(num / 4, num % 4));
+	local_irq_restore(flags);
+}
+
+static int __init rbtx4939_led_probe(struct platform_device *pdev)
+{
+	struct rbtx4939_led_data *leds_data;
+	int i;
+	static char *default_triggers[] __initdata = {
+		"heartbeat",
+		"ide-disk",
+		"nand-disk",
+	};
+
+	leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS,
+			    GFP_KERNEL);
+	if (!leds_data)
+		return -ENOMEM;
+	for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++) {
+		int rc;
+		struct rbtx4939_led_data *led_dat = &leds_data[i];
+
+		led_dat->num = i;
+		led_dat->cdev.brightness_set = rbtx4939_led_brightness_set;
+		sprintf(led_dat->name, "rbtx4939:amber:%u", i);
+		led_dat->cdev.name = led_dat->name;
+		if (i < ARRAY_SIZE(default_triggers))
+			led_dat->cdev.default_trigger = default_triggers[i];
+		rc = led_classdev_register(&pdev->dev, &led_dat->cdev);
+		if (rc < 0)
+			return rc;
+		led_dat->cdev.brightness_set(&led_dat->cdev, 0);
+	}
+	return 0;
+
+}
+
+static struct platform_driver rbtx4939_led_driver = {
+	.driver  = {
+		.name = "rbtx4939-led",
+		.owner = THIS_MODULE,
+	},
+};
+
+static void __init rbtx4939_led_setup(void)
+{
+	platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
+	platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
+}
+#else
+static inline void rbtx4939_led_setup(void)
+{
+}
+#endif
+
+static void __init rbtx4939_arch_init(void)
+{
+	rbtx4939_pci_setup();
+}
+
+static void __init rbtx4939_device_init(void)
+{
+#if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
+	int i, j;
+	unsigned char ethaddr[2][6];
+	for (i = 0; i < 2; i++) {
+		unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
+		if (readb(rbtx4939_bdipsw_addr) & 8) {
+			u16 buf[3];
+			area -= 0x03000000;
+			for (j = 0; j < 3; j++)
+				buf[j] = le16_to_cpup((u16 *)(area + j * 2));
+			memcpy(ethaddr[i], buf, 6);
+		} else
+			memcpy(ethaddr[i], (void *)area, 6);
+	}
+	tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
+#endif
+	rbtx4939_led_setup();
+	tx4939_wdt_init();
+}
+
+static void __init rbtx4939_setup(void)
+{
+	rbtx4939_ebusc_setup();
+	/* always enable ATA0 */
+	txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
+	rbtx4939_update_ioc_pen();
+	if (txx9_master_clock == 0)
+		txx9_master_clock = 20000000;
+	tx4939_setup();
+
+	_machine_restart = rbtx4939_machine_restart;
+
+	pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
+		readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
+		readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
+
+#ifdef CONFIG_PCI
+	txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
+	txx9_board_pcibios_setup = tx4927_pcibios_setup;
+#else
+	set_io_port_base(RBTX4939_ETHER_BASE);
+#endif
+
+	tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
+}
+
+struct txx9_board_vec rbtx4939_vec __initdata = {
+	.system = "Tothiba RBTX4939",
+	.prom_init = rbtx4939_prom_init,
+	.mem_setup = rbtx4939_setup,
+	.irq_setup = rbtx4939_irq_setup,
+	.time_init = rbtx4939_time_init,
+	.device_init = rbtx4939_device_init,
+	.arch_init = rbtx4939_arch_init,
+#ifdef CONFIG_PCI
+	.pci_map_irq = tx4939_pci_map_irq,
+#endif
+};