/* * arch/arm/mach-orion5x/dns323-setup.c * * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org> * * Support for HW Rev C1: * * Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. *
*/ #include <linux/gpio.h> #include <linux/gpio/machine.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/pci.h> #include <linux/irq.h> #include <linux/mtd/physmap.h> #include <linux/mv643xx_eth.h> #include <linux/leds.h> #include <linux/gpio_keys.h> #include <linux/input.h> #include <linux/i2c.h> #include <linux/ata_platform.h> #include <linux/phy.h> #include <linux/marvell_phy.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/pci.h> #include <asm/system_info.h> #include <plat/orion-gpio.h> #include"orion5x.h" #include"common.h" #include"mpp.h"
staticint __init dns323_pci_init(void)
{ /* Rev B1 and C1 doesn't really use its PCI bus, and initialising PCI * gets in the way of initialising the SATA controller.
*/ if (machine_is_dns323() && system_rev == DNS323_REV_A1)
pci_common_init(&dns323_pci);
return 0;
}
subsys_initcall(dns323_pci_init);
/**************************************************************************** * 8MiB NOR flash (Spansion S29GL064M90TFIR4) * * Layout as used by D-Link: * 0x00000000-0x00010000 : "MTD1" * 0x00010000-0x00020000 : "MTD2" * 0x00020000-0x001a0000 : "Linux Kernel" * 0x001a0000-0x007d0000 : "File System" * 0x007d0000-0x00800000 : "u-boot"
*/
/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these * functions be kept somewhere?
*/ staticint __init dns323_parse_hex_nibble(char n)
{ if (n >= '0' && n <= '9') return n - '0';
if (n >= 'A' && n <= 'F') return n - 'A' + 10;
if (n >= 'a' && n <= 'f') return n - 'a' + 10;
return -1;
}
staticint __init dns323_parse_hex_byte(constchar *b)
{ int hi; int lo;
hi = dns323_parse_hex_nibble(b[0]);
lo = dns323_parse_hex_nibble(b[1]);
if (hi < 0 || lo < 0) return -1;
return (hi << 4) | lo;
}
staticint __init dns323_read_mac_addr(void)
{
u_int8_t addr[6]; int i; char *mac_page;
/* MAC address is stored as a regular ol' string in /dev/mtdblock4 * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
*/
mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024); if (!mac_page) return -ENOMEM;
/* Sanity check the string we're looking at */ for (i = 0; i < 5; i++) { if (*(mac_page + (i * 3) + 2) != ':') { goto error_fail;
}
}
for (i = 0; i < 6; i++) { int byte;
byte = dns323_parse_hex_byte(mac_page + (i * 3)); if (byte < 0) { goto error_fail;
}
addr[i] = byte;
}
iounmap(mac_page);
printk("DNS-323: Found ethernet MAC address: %pM\n", addr);
/* B1 is the same but power LED is active high */ staticstruct gpiod_lookup_table dns323b1_leds_gpio_table = {
.dev_id = "leds-gpio",
.table = {
GPIO_LOOKUP_IDX("orion_gpio0", DNS323_GPIO_LED_POWER2, NULL,
0, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("orion_gpio0", DNS323_GPIO_LED_RIGHT_AMBER, NULL,
1, GPIO_ACTIVE_LOW),
GPIO_LOOKUP_IDX("orion_gpio0", DNS323_GPIO_LED_LEFT_AMBER, NULL,
2, GPIO_ACTIVE_LOW),
{ },
},
};
/**************************************************************************** * General Setup
*/ staticunsignedint dns323a_mpp_modes[] __initdata = {
MPP0_PCIE_RST_OUTn,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_UNUSED,
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_UNUSED,
MPP13_UNUSED,
MPP14_UNUSED,
MPP15_UNUSED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
staticunsignedint dns323b_mpp_modes[] __initdata = {
MPP0_UNUSED,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_GPIO, /* system up flag */
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
staticunsignedint dns323c_mpp_modes[] __initdata = {
MPP0_GPIO, /* ? input */
MPP1_GPIO, /* input power switch (0 = pressed) */
MPP2_GPIO, /* output power off */
MPP3_UNUSED, /* ? output */
MPP4_UNUSED, /* ? output */
MPP5_UNUSED, /* ? output */
MPP6_UNUSED, /* ? output */
MPP7_UNUSED, /* ? output */
MPP8_GPIO, /* i/o right amber LED */
MPP9_GPIO, /* i/o left amber LED */
MPP10_GPIO, /* input */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_GPIO, /* power button LED */
MPP18_GPIO, /* fan speed bit 0 */
MPP19_GPIO, /* fan speed bit 1 */
0,
};
/* Rev C1 Fan speed notes: * * The fan is controlled by 2 GPIOs on this board. The settings * of the bits is as follow: * * GPIO 18 GPIO 19 Fan * * 0 0 stopped * 0 1 low speed * 1 0 high speed * 1 1 don't do that (*) * * (*) I think the two bits control two feed-in resistors into a fixed * PWN circuit, setting both bits will basically go a 'bit' faster * than high speed, but d-link doesn't do it and you may get out of * HW spec so don't do it.
*/
/* * On the DNS-323 A1 and B1 the following devices are attached via I2C: * * i2c addr | chip | description * 0x3e | GMT G760Af | fan speed PWM controller * 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible) * 0x68 | ST M41T80 | RTC w/ alarm
*/ staticstruct i2c_board_info __initdata dns323ab_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
}, {
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/* * On the DNS-323 C1 the following devices are attached via I2C: * * i2c addr | chip | description * 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible) * 0x68 | ST M41T80 | RTC w/ alarm
*/ staticstruct i2c_board_info __initdata dns323c_i2c_devices[] = {
{
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/* DNS-323 rev. A specific power off method */ staticvoid dns323a_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
}
/* DNS-323 rev B specific power off method */ staticvoid dns323b_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n"); /* Pin has to be changed to 1 and back to 0 to do actual power off. */
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
mdelay(100);
gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
}
/* DNS-323 rev. C specific power off method */ staticvoid dns323c_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
}
staticint __init dns323_identify_rev(void)
{
u32 dev, rev, i, reg;
pr_debug("DNS-323: Identifying board ... \n");
/* Rev A1 has a 5181 */
orion5x_pcie_id(&dev, &rev); if (dev == MV88F5181_DEV_ID) {
pr_debug("DNS-323: 5181 found, board is A1\n"); return DNS323_REV_A1;
}
pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
/* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is * a bit gross but we want to do that without links into the eth * driver so let's poke at it directly. We default to rev B1 in * case the accesses fail
*/
for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG); if (!(reg & SMI_BUSY)) break;
} if (i >= 1000) {
pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n"); return DNS323_REV_B1;
}
writel((3 << 21) /* phy ID reg */ |
(8 << 16) /* phy addr */ |
SMI_OPCODE_READ, ETH_SMI_REG); for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG); if (reg & SMI_READ_VALID) break;
} if (i >= 1000) {
pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n"); return DNS323_REV_B1;
}
pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
/* Note: the Marvell tools mask the ID with 0x3f0 before comparison * but I don't see that making a difference here, at least with * any known Marvell PHY ID
*/ switch(reg & 0xfff0) { case 0x0cc0: /* MV88E1111 */ return DNS323_REV_B1; case 0x0e10: /* MV88E1118 */ return DNS323_REV_C1; default:
pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
reg & 0xffff);
} return DNS323_REV_B1;
}
staticvoid __init dns323_init(void)
{ /* Setup basic Orion functions. Need to be called early. */
orion5x_init();
/* Just to be tricky, the 5182 has a completely different * set of MPP modes to the 5181.
*/ switch(system_rev) { case DNS323_REV_A1:
orion5x_mpp_conf(dns323a_mpp_modes);
writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */ break; case DNS323_REV_B1:
orion5x_mpp_conf(dns323b_mpp_modes); break; case DNS323_REV_C1:
orion5x_mpp_conf(dns323c_mpp_modes); break;
}
/* Sort out LEDs, Buttons and i2c devices */ switch(system_rev) { case DNS323_REV_A1: /* The 5181 power LED is active low and requires * DNS323_GPIO_LED_POWER1 to also be low.
*/
gpiod_add_lookup_table(&dns323a1_leds_gpio_table);
gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
i2c_register_board_info(0, dns323ab_i2c_devices,
ARRAY_SIZE(dns323ab_i2c_devices));
/* Hookup i2c devices and fan driver */
i2c_register_board_info(0, dns323c_i2c_devices,
ARRAY_SIZE(dns323c_i2c_devices));
platform_device_register_simple("dns323c-fan", 0, NULL, 0);
/* Register fixup for the PHY LEDs */ if (!IS_BUILTIN(CONFIG_PHYLIB)) break;
phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
MARVELL_PHY_ID_MASK,
dns323c_phy_fixup);
}
/* * Configure peripherals.
*/ if (dns323_read_mac_addr() < 0)
printk("DNS-323: Failed to read MAC address\n");
orion5x_ehci0_init();
orion5x_eth_init(&dns323_eth_data);
orion5x_i2c_init();
orion5x_uart0_init();
/* Remaining GPIOs */ switch(system_rev) { case DNS323_REV_A1: /* Poweroff GPIO */ if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
register_platform_power_off(dns323a_power_off); break; case DNS323_REV_B1: /* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* The DNS323 rev B1 has flag to indicate the system is up. * Without this flag set, power LED will flash and cannot be * controlled via leds-gpio.
*/ if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
/* Poweroff GPIO */ if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
register_platform_power_off(dns323b_power_off); break; case DNS323_REV_C1: /* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* Now, -this- should theoretically be done by the sata_mv driver * once I figure out what's going on there. Maybe the behaviour * of the LEDs should be somewhat passed via the platform_data. * for now, just whack the register and make the LEDs happy * * Note: AFAIK, rev B1 needs the same treatment but I'll let * somebody else test it.
*/
writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c); break;
}
}
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