arch/powerpc/platforms/8xx/mpc885ads_setup.c - maze/linux - Git at Google

 /*
  * Platform setup for the Freescale mpc885ads board
  *
  * Vitaly Bordug <vbordug@ru.mvista.com>
  *
  * Copyright 2005 MontaVista Software Inc.
  *
  * Heavily modified by Scott Wood <scottwood@freescale.com>
  * Copyright 2007 Freescale Semiconductor, 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/module.h>
 #include <linux/param.h>
 #include <linux/string.h>
 #include <linux/ioport.h>
 #include <linux/device.h>
 #include <linux/delay.h>

 #include <linux/fs_enet_pd.h>
 #include <linux/fs_uart_pd.h>
 #include <linux/fsl_devices.h>
 #include <linux/mii.h>
 #include <linux/of_platform.h>

 #include <asm/delay.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
 #include <asm/page.h>
 #include <asm/processor.h>
 #include <asm/system.h>
 #include <asm/time.h>
 #include <asm/mpc8xx.h>
 #include <asm/8xx_immap.h>
 #include <asm/commproc.h>
 #include <asm/fs_pd.h>
 #include <asm/udbg.h>

 #include <sysdev/commproc.h>

 static u32 __iomem *bcsr, *bcsr5;

 #ifdef CONFIG_PCMCIA_M8XX
 static void pcmcia_hw_setup(int slot, int enable)
 {
 	if (enable)
 		clrbits32(&bcsr[1], BCSR1_PCCEN);
 	else
 		setbits32(&bcsr[1], BCSR1_PCCEN);
 }

 static int pcmcia_set_voltage(int slot, int vcc, int vpp)
 {
 	u32 reg = 0;

 	switch (vcc) {
 	case 0:
 		break;
 	case 33:
 		reg |= BCSR1_PCCVCC0;
 		break;
 	case 50:
 		reg |= BCSR1_PCCVCC1;
 		break;
 	default:
 		return 1;
 	}

 	switch (vpp) {
 	case 0:
 		break;
 	case 33:
 	case 50:
 		if (vcc == vpp)
 			reg |= BCSR1_PCCVPP1;
 		else
 			return 1;
 		break;
 	case 120:
 		if ((vcc == 33) || (vcc == 50))
 			reg |= BCSR1_PCCVPP0;
 		else
 			return 1;
 	default:
 		return 1;
 	}

 	/* first, turn off all power */
 	clrbits32(&bcsr[1], 0x00610000);

 	/* enable new powersettings */
 	setbits32(&bcsr[1], reg);

 	return 0;
 }
 #endif

 struct cpm_pin {
 	int port, pin, flags;
 };

 static struct cpm_pin mpc885ads_pins[] = {
 	/* SMC1 */
 	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
 	{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */

 	/* SMC2 */
 #ifndef CONFIG_MPC8xx_SECOND_ETH_FEC2
 	{CPM_PORTE, 21, CPM_PIN_INPUT}, /* RX */
 	{CPM_PORTE, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
 #endif

 	/* SCC3 */
 	{CPM_PORTA, 9, CPM_PIN_INPUT}, /* RX */
 	{CPM_PORTA, 8, CPM_PIN_INPUT}, /* TX */
 	{CPM_PORTC, 4, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
 	{CPM_PORTC, 5, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
 	{CPM_PORTE, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
 	{CPM_PORTE, 17, CPM_PIN_INPUT}, /* CLK5 */
 	{CPM_PORTE, 16, CPM_PIN_INPUT}, /* CLK6 */

 	/* MII1 */
 	{CPM_PORTA, 0, CPM_PIN_INPUT},
 	{CPM_PORTA, 1, CPM_PIN_INPUT},
 	{CPM_PORTA, 2, CPM_PIN_INPUT},
 	{CPM_PORTA, 3, CPM_PIN_INPUT},
 	{CPM_PORTA, 4, CPM_PIN_OUTPUT},
 	{CPM_PORTA, 10, CPM_PIN_OUTPUT},
 	{CPM_PORTA, 11, CPM_PIN_OUTPUT},
 	{CPM_PORTB, 19, CPM_PIN_INPUT},
 	{CPM_PORTB, 31, CPM_PIN_INPUT},
 	{CPM_PORTC, 12, CPM_PIN_INPUT},
 	{CPM_PORTC, 13, CPM_PIN_INPUT},
 	{CPM_PORTE, 30, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 31, CPM_PIN_OUTPUT},

 	/* MII2 */
 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
 	{CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 16, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 	{CPM_PORTE, 21, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 22, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 23, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 24, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 25, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 26, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 27, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 28, CPM_PIN_OUTPUT},
 	{CPM_PORTE, 29, CPM_PIN_OUTPUT},
 #endif
 };

 static void __init init_ioports(void)
 {
 	int i;

 	for (i = 0; i < ARRAY_SIZE(mpc885ads_pins); i++) {
 		struct cpm_pin *pin = &mpc885ads_pins[i];
 		cpm1_set_pin(pin->port, pin->pin, pin->flags);
 	}

 	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
 	cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
 	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_TX);
 	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_RX);

 	/* Set FEC1 and FEC2 to MII mode */
 	clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
 }

 static void __init mpc885ads_setup_arch(void)
 {
 	struct device_node *np;

 	cpm_reset();
 	init_ioports();

 	np = of_find_compatible_node(NULL, NULL, "fsl,mpc885ads-bcsr");
 	if (!np) {
 		printk(KERN_CRIT "Could not find fsl,mpc885ads-bcsr node\n");
 		return;
 	}

 	bcsr = of_iomap(np, 0);
 	bcsr5 = of_iomap(np, 1);
 	of_node_put(np);

 	if (!bcsr || !bcsr5) {
 		printk(KERN_CRIT "Could not remap BCSR\n");
 		return;
 	}

 	clrbits32(&bcsr[1], BCSR1_RS232EN_1);
 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
 	setbits32(&bcsr[1], BCSR1_RS232EN_2);
 #else
 	clrbits32(&bcsr[1], BCSR1_RS232EN_2);
 #endif

 	clrbits32(bcsr5, BCSR5_MII1_EN);
 	setbits32(bcsr5, BCSR5_MII1_RST);
 	udelay(1000);
 	clrbits32(bcsr5, BCSR5_MII1_RST);

 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
 	clrbits32(bcsr5, BCSR5_MII2_EN);
 	setbits32(bcsr5, BCSR5_MII2_RST);
 	udelay(1000);
 	clrbits32(bcsr5, BCSR5_MII2_RST);
 #else
 	setbits32(bcsr5, BCSR5_MII2_EN);
 #endif

 #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
 	clrbits32(&bcsr[4], BCSR4_ETH10_RST);
 	udelay(1000);
 	setbits32(&bcsr[4], BCSR4_ETH10_RST);

 	setbits32(&bcsr[1], BCSR1_ETHEN);

 	np = of_find_node_by_path("/soc@ff000000/cpm@9c0/serial@a80");
 #else
 	np = of_find_node_by_path("/soc@ff000000/cpm@9c0/ethernet@a40");
 #endif

 	/* The SCC3 enet registers overlap the SMC1 registers, so
 	 * one of the two must be removed from the device tree.
 	 */

 	if (np) {
 		of_detach_node(np);
 		of_node_put(np);
 	}

 #ifdef CONFIG_PCMCIA_M8XX
 	/* Set up board specific hook-ups.*/
 	m8xx_pcmcia_ops.hw_ctrl = pcmcia_hw_setup;
 	m8xx_pcmcia_ops.voltage_set = pcmcia_set_voltage;
 #endif
 }

 static int __init mpc885ads_probe(void)
 {
 	unsigned long root = of_get_flat_dt_root();
 	return of_flat_dt_is_compatible(root, "fsl,mpc885ads");
 }

 static struct of_device_id __initdata of_bus_ids[] = {
 	{ .name = "soc", },
 	{ .name = "cpm", },
 	{ .name = "localbus", },
 	{},
 };

 static int __init declare_of_platform_devices(void)
 {
 	/* Publish the QE devices */
 	if (machine_is(mpc885_ads))
 		of_platform_bus_probe(NULL, of_bus_ids, NULL);

 	return 0;
 }
 device_initcall(declare_of_platform_devices);

 define_machine(mpc885_ads) {
 	.name			= "Freescale MPC885 ADS",
 	.probe			= mpc885ads_probe,
 	.setup_arch		= mpc885ads_setup_arch,
 	.init_IRQ		= m8xx_pic_init,
 	.get_irq		= mpc8xx_get_irq,
 	.restart		= mpc8xx_restart,
 	.calibrate_decr		= mpc8xx_calibrate_decr,
 	.set_rtc_time		= mpc8xx_set_rtc_time,
 	.get_rtc_time		= mpc8xx_get_rtc_time,
 	.progress		= udbg_progress,
 };
	/*
	* Platform setup for the Freescale mpc885ads board
	*
	* Vitaly Bordug <vbordug@ru.mvista.com>
	*
	* Copyright 2005 MontaVista Software Inc.
	*
	* Heavily modified by Scott Wood <scottwood@freescale.com>
	* Copyright 2007 Freescale Semiconductor, 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/module.h>
	#include <linux/param.h>
	#include <linux/string.h>
	#include <linux/ioport.h>
	#include <linux/device.h>
	#include <linux/delay.h>

	#include <linux/fs_enet_pd.h>
	#include <linux/fs_uart_pd.h>
	#include <linux/fsl_devices.h>
	#include <linux/mii.h>
	#include <linux/of_platform.h>

	#include <asm/delay.h>
	#include <asm/io.h>
	#include <asm/machdep.h>
	#include <asm/page.h>
	#include <asm/processor.h>
	#include <asm/system.h>
	#include <asm/time.h>
	#include <asm/mpc8xx.h>
	#include <asm/8xx_immap.h>
	#include <asm/commproc.h>
	#include <asm/fs_pd.h>
	#include <asm/udbg.h>

	#include <sysdev/commproc.h>

	static u32 __iomem bcsr, bcsr5;

	#ifdef CONFIG_PCMCIA_M8XX
	static void pcmcia_hw_setup(int slot, int enable)
	{
	if (enable)
	clrbits32(&bcsr[1], BCSR1_PCCEN);
	else
	setbits32(&bcsr[1], BCSR1_PCCEN);
	}

	static int pcmcia_set_voltage(int slot, int vcc, int vpp)
	{
	u32 reg = 0;

	switch (vcc) {
	case 0:
	break;
	case 33:
	reg \|= BCSR1_PCCVCC0;
	break;
	case 50:
	reg \|= BCSR1_PCCVCC1;
	break;
	default:
	return 1;
	}

	switch (vpp) {
	case 0:
	break;
	case 33:
	case 50:
	if (vcc == vpp)
	reg \|= BCSR1_PCCVPP1;
	else
	return 1;
	break;
	case 120:
	if ((vcc == 33) \|\| (vcc == 50))
	reg \|= BCSR1_PCCVPP0;
	else
	return 1;
	default:
	return 1;
	}

	/* first, turn off all power */
	clrbits32(&bcsr[1], 0x00610000);

	/* enable new powersettings */
	setbits32(&bcsr[1], reg);

	return 0;
	}
	#endif

	struct cpm_pin {
	int port, pin, flags;
	};

	static struct cpm_pin mpc885ads_pins[] = {
	/* SMC1 */
	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
	{CPM_PORTB, 25, CPM_PIN_INPUT \| CPM_PIN_SECONDARY}, /* TX */

	/* SMC2 */
	#ifndef CONFIG_MPC8xx_SECOND_ETH_FEC2
	{CPM_PORTE, 21, CPM_PIN_INPUT}, /* RX */
	{CPM_PORTE, 20, CPM_PIN_INPUT \| CPM_PIN_SECONDARY}, /* TX */
	#endif

	/* SCC3 */
	{CPM_PORTA, 9, CPM_PIN_INPUT}, /* RX */
	{CPM_PORTA, 8, CPM_PIN_INPUT}, /* TX */
	{CPM_PORTC, 4, CPM_PIN_INPUT \| CPM_PIN_SECONDARY \| CPM_PIN_GPIO}, /* RENA */
	{CPM_PORTC, 5, CPM_PIN_INPUT \| CPM_PIN_SECONDARY \| CPM_PIN_GPIO}, /* CLSN */
	{CPM_PORTE, 27, CPM_PIN_INPUT \| CPM_PIN_SECONDARY}, /* TENA */
	{CPM_PORTE, 17, CPM_PIN_INPUT}, /* CLK5 */
	{CPM_PORTE, 16, CPM_PIN_INPUT}, /* CLK6 */

	/* MII1 */
	{CPM_PORTA, 0, CPM_PIN_INPUT},
	{CPM_PORTA, 1, CPM_PIN_INPUT},
	{CPM_PORTA, 2, CPM_PIN_INPUT},
	{CPM_PORTA, 3, CPM_PIN_INPUT},
	{CPM_PORTA, 4, CPM_PIN_OUTPUT},
	{CPM_PORTA, 10, CPM_PIN_OUTPUT},
	{CPM_PORTA, 11, CPM_PIN_OUTPUT},
	{CPM_PORTB, 19, CPM_PIN_INPUT},
	{CPM_PORTB, 31, CPM_PIN_INPUT},
	{CPM_PORTC, 12, CPM_PIN_INPUT},
	{CPM_PORTC, 13, CPM_PIN_INPUT},
	{CPM_PORTE, 30, CPM_PIN_OUTPUT},
	{CPM_PORTE, 31, CPM_PIN_OUTPUT},

	/* MII2 */
	#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
	{CPM_PORTE, 14, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 15, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 16, CPM_PIN_OUTPUT},
	{CPM_PORTE, 17, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 18, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 19, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 20, CPM_PIN_OUTPUT \| CPM_PIN_SECONDARY},
	{CPM_PORTE, 21, CPM_PIN_OUTPUT},
	{CPM_PORTE, 22, CPM_PIN_OUTPUT},
	{CPM_PORTE, 23, CPM_PIN_OUTPUT},
	{CPM_PORTE, 24, CPM_PIN_OUTPUT},
	{CPM_PORTE, 25, CPM_PIN_OUTPUT},
	{CPM_PORTE, 26, CPM_PIN_OUTPUT},
	{CPM_PORTE, 27, CPM_PIN_OUTPUT},
	{CPM_PORTE, 28, CPM_PIN_OUTPUT},
	{CPM_PORTE, 29, CPM_PIN_OUTPUT},
	#endif
	};

	static void __init init_ioports(void)
	{
	int i;

	for (i = 0; i < ARRAY_SIZE(mpc885ads_pins); i++) {
	struct cpm_pin *pin = &mpc885ads_pins[i];
	cpm1_set_pin(pin->port, pin->pin, pin->flags);
	}

	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
	cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_TX);
	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_RX);

	/* Set FEC1 and FEC2 to MII mode */
	clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
	}

	static void __init mpc885ads_setup_arch(void)
	{
	struct device_node *np;

	cpm_reset();
	init_ioports();

	np = of_find_compatible_node(NULL, NULL, "fsl,mpc885ads-bcsr");
	if (!np) {
	printk(KERN_CRIT "Could not find fsl,mpc885ads-bcsr node\n");
	return;
	}

	bcsr = of_iomap(np, 0);
	bcsr5 = of_iomap(np, 1);
	of_node_put(np);

	if (!bcsr \|\| !bcsr5) {
	printk(KERN_CRIT "Could not remap BCSR\n");
	return;
	}

	clrbits32(&bcsr[1], BCSR1_RS232EN_1);
	#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
	setbits32(&bcsr[1], BCSR1_RS232EN_2);
	#else
	clrbits32(&bcsr[1], BCSR1_RS232EN_2);
	#endif

	clrbits32(bcsr5, BCSR5_MII1_EN);
	setbits32(bcsr5, BCSR5_MII1_RST);
	udelay(1000);
	clrbits32(bcsr5, BCSR5_MII1_RST);

	#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
	clrbits32(bcsr5, BCSR5_MII2_EN);
	setbits32(bcsr5, BCSR5_MII2_RST);
	udelay(1000);
	clrbits32(bcsr5, BCSR5_MII2_RST);
	#else
	setbits32(bcsr5, BCSR5_MII2_EN);
	#endif

	#ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
	clrbits32(&bcsr[4], BCSR4_ETH10_RST);
	udelay(1000);
	setbits32(&bcsr[4], BCSR4_ETH10_RST);

	setbits32(&bcsr[1], BCSR1_ETHEN);

	np = of_find_node_by_path("/soc@ff000000/cpm@9c0/serial@a80");
	#else
	np = of_find_node_by_path("/soc@ff000000/cpm@9c0/ethernet@a40");
	#endif

	/* The SCC3 enet registers overlap the SMC1 registers, so
	* one of the two must be removed from the device tree.
	*/

	if (np) {
	of_detach_node(np);
	of_node_put(np);
	}

	#ifdef CONFIG_PCMCIA_M8XX
	/* Set up board specific hook-ups.*/
	m8xx_pcmcia_ops.hw_ctrl = pcmcia_hw_setup;
	m8xx_pcmcia_ops.voltage_set = pcmcia_set_voltage;
	#endif
	}

	static int __init mpc885ads_probe(void)
	{
	unsigned long root = of_get_flat_dt_root();
	return of_flat_dt_is_compatible(root, "fsl,mpc885ads");
	}

	static struct of_device_id __initdata of_bus_ids[] = {
	{ .name = "soc", },
	{ .name = "cpm", },
	{ .name = "localbus", },
	{},
	};

	static int __init declare_of_platform_devices(void)
	{
	/* Publish the QE devices */
	if (machine_is(mpc885_ads))
	of_platform_bus_probe(NULL, of_bus_ids, NULL);

	return 0;
	}
	device_initcall(declare_of_platform_devices);

	define_machine(mpc885_ads) {
	.name = "Freescale MPC885 ADS",
	.probe = mpc885ads_probe,
	.setup_arch = mpc885ads_setup_arch,
	.init_IRQ = m8xx_pic_init,
	.get_irq = mpc8xx_get_irq,
	.restart = mpc8xx_restart,
	.calibrate_decr = mpc8xx_calibrate_decr,
	.set_rtc_time = mpc8xx_set_rtc_time,
	.get_rtc_time = mpc8xx_get_rtc_time,
	.progress = udbg_progress,
	};