[PATCH] arm/orion5x: Base support for DNS-323 rev C1
Benjamin Herrenschmidt
benh at kernel.crashing.org
Sun May 16 20:27:29 EDT 2010
This patch adds the base support for this new HW revision to the existing
dns323-setup.c file. The SoC seems to be the same as rev B1, the GPIOs
are all wired differently though and the fan control isn't i2c based
anymore.
A followup patch adds a simple fan control driver.
Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
---
arch/arm/mach-orion5x/dns323-setup.c | 347 ++++++++++++++++++++++++++++------
1 files changed, 288 insertions(+), 59 deletions(-)
diff --git a/arch/arm/mach-orion5x/dns323-setup.c b/arch/arm/mach-orion5x/dns323-setup.c
index 421b82f..b9bf72a 100644
--- a/arch/arm/mach-orion5x/dns323-setup.c
+++ b/arch/arm/mach-orion5x/dns323-setup.c
@@ -3,6 +3,10 @@
*
* Copyright (C) 2007 Herbert Valerio Riedel <hvr at gnu.org>
*
+ * Support for HW Rev C1:
+ *
+ * Copyright (C) 2010 Benjamin Herrenschmidt <benh at 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
@@ -31,6 +35,7 @@
#include "common.h"
#include "mpp.h"
+/* Rev A1 and B1 */
#define DNS323_GPIO_LED_RIGHT_AMBER 1
#define DNS323_GPIO_LED_LEFT_AMBER 2
#define DNS323_GPIO_SYSTEM_UP 3
@@ -42,6 +47,23 @@
#define DNS323_GPIO_KEY_POWER 9
#define DNS323_GPIO_KEY_RESET 10
+/* Rev C1 */
+#define DNS323C_GPIO_KEY_POWER 1
+#define DNS323C_GPIO_POWER_OFF 2
+#define DNS323C_GPIO_LED_RIGHT_AMBER 8
+#define DNS323C_GPIO_LED_LEFT_AMBER 9
+#define DNS323C_GPIO_LED_POWER 17
+#define DNS323C_GPIO_FAN_BIT1 18
+#define DNS323C_GPIO_FAN_BIT0 19
+
+/* Exposed to userspace, do not change */
+enum {
+ DNS323_REV_A1, /* 0 */
+ DNS323_REV_B1, /* 1 */
+ DNS323_REV_C1, /* 2 */
+};
+
+
/****************************************************************************
* PCI setup
*/
@@ -68,21 +90,12 @@ static struct hw_pci dns323_pci __initdata = {
.map_irq = dns323_pci_map_irq,
};
-static int __init dns323_dev_id(void)
-{
- u32 dev, rev;
-
- orion5x_pcie_id(&dev, &rev);
-
- return dev;
-}
-
static int __init dns323_pci_init(void)
{
- /* The 5182 doesn't really use its PCI bus, and initialising PCI
+ /* 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() && dns323_dev_id() != MV88F5182_DEV_ID)
+ if (machine_is_dns323() && system_rev == DNS323_REV_A1)
pci_common_init(&dns323_pci);
return 0;
@@ -221,7 +234,7 @@ static int __init dns323_read_mac_addr(void)
}
iounmap(mac_page);
- printk("DNS323: Found ethernet MAC address: ");
+ printk("DNS-323: Found ethernet MAC address: ");
for (i = 0; i < 6; i++)
printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
@@ -258,7 +271,7 @@ static int dns323_gpio_blink_set(unsigned gpio,
return -EINVAL;
}
-static struct gpio_led dns323_leds[] = {
+static struct gpio_led dns323ab_leds[] = {
{
.name = "power:blue",
.gpio = DNS323_GPIO_LED_POWER2,
@@ -274,9 +287,33 @@ static struct gpio_led dns323_leds[] = {
},
};
-static struct gpio_led_platform_data dns323_led_data = {
- .num_leds = ARRAY_SIZE(dns323_leds),
- .leds = dns323_leds,
+
+static struct gpio_led dns323c_leds[] = {
+ {
+ .name = "power:blue",
+ .gpio = DNS323C_GPIO_LED_POWER,
+ .default_trigger = "timer",
+ }, {
+ .name = "right:amber",
+ .gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
+ .active_low = 1,
+ }, {
+ .name = "left:amber",
+ .gpio = DNS323C_GPIO_LED_LEFT_AMBER,
+ .active_low = 1,
+ },
+};
+
+
+static struct gpio_led_platform_data dns323ab_led_data = {
+ .num_leds = ARRAY_SIZE(dns323ab_leds),
+ .leds = dns323ab_leds,
+ .gpio_blink_set = dns323_gpio_blink_set,
+};
+
+static struct gpio_led_platform_data dns323c_led_data = {
+ .num_leds = ARRAY_SIZE(dns323c_leds),
+ .leds = dns323c_leds,
.gpio_blink_set = dns323_gpio_blink_set,
};
@@ -284,7 +321,7 @@ static struct platform_device dns323_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
- .platform_data = &dns323_led_data,
+ .platform_data = &dns323ab_led_data,
},
};
@@ -292,7 +329,7 @@ static struct platform_device dns323_gpio_leds = {
* GPIO Attached Keys
*/
-static struct gpio_keys_button dns323_buttons[] = {
+static struct gpio_keys_button dns323ab_buttons[] = {
{
.code = KEY_RESTART,
.gpio = DNS323_GPIO_KEY_RESET,
@@ -306,9 +343,23 @@ static struct gpio_keys_button dns323_buttons[] = {
},
};
-static struct gpio_keys_platform_data dns323_button_data = {
- .buttons = dns323_buttons,
- .nbuttons = ARRAY_SIZE(dns323_buttons),
+static struct gpio_keys_platform_data dns323ab_button_data = {
+ .buttons = dns323ab_buttons,
+ .nbuttons = ARRAY_SIZE(dns323ab_buttons),
+};
+
+static struct gpio_keys_button dns323c_buttons[] = {
+ {
+ .code = KEY_POWER,
+ .gpio = DNS323C_GPIO_KEY_POWER,
+ .desc = "Power Button",
+ .active_low = 1,
+ },
+};
+
+static struct gpio_keys_platform_data dns323c_button_data = {
+ .buttons = dns323c_buttons,
+ .nbuttons = ARRAY_SIZE(dns323c_buttons),
};
static struct platform_device dns323_button_device = {
@@ -316,7 +367,7 @@ static struct platform_device dns323_button_device = {
.id = -1,
.num_resources = 0,
.dev = {
- .platform_data = &dns323_button_data,
+ .platform_data = &dns323ab_button_data,
},
};
@@ -330,7 +381,7 @@ static struct mv_sata_platform_data dns323_sata_data = {
/****************************************************************************
* General Setup
*/
-static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
+static struct orion5x_mpp_mode dns323a_mpp_modes[] __initdata = {
{ 0, MPP_PCIE_RST_OUTn },
{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
@@ -354,7 +405,7 @@ static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
{ -1 },
};
-static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
+static struct orion5x_mpp_mode dns323b_mpp_modes[] __initdata = {
{ 0, MPP_UNUSED },
{ 1, MPP_GPIO }, /* right amber LED (sata ch0) */
{ 2, MPP_GPIO }, /* left amber LED (sata ch1) */
@@ -378,15 +429,57 @@ static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
{ -1 },
};
+static struct orion5x_mpp_mode dns323c_mpp_modes[] __initdata = {
+ { 0, MPP_GPIO }, /* ? input */
+ { 1, MPP_GPIO }, /* input power switch (0 = pressed) */
+ { 2, MPP_GPIO }, /* output power off */
+ { 3, MPP_UNUSED }, /* ? output */
+ { 4, MPP_UNUSED }, /* ? output */
+ { 5, MPP_UNUSED }, /* ? output */
+ { 6, MPP_UNUSED }, /* ? output */
+ { 7, MPP_UNUSED }, /* ? output */
+ { 8, MPP_GPIO }, /* i/o right amber LED */
+ { 9, MPP_GPIO }, /* i/o left amber LED */
+ { 10, MPP_GPIO }, /* input */
+ { 11, MPP_UNUSED },
+ { 12, MPP_SATA_LED },
+ { 13, MPP_SATA_LED },
+ { 14, MPP_SATA_LED },
+ { 15, MPP_SATA_LED },
+ { 16, MPP_UNUSED },
+ { 17, MPP_GPIO }, /* power button LED */
+ { 18, MPP_GPIO }, /* fan speed bit 0 */
+ { 19, MPP_GPIO }, /* fan speed bit 1 */
+ { -1 },
+};
+
+/* 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 the following devices are attached via I2C:
+ * 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
*/
-static struct i2c_board_info __initdata dns323_i2c_devices[] = {
+static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
}, {
@@ -396,6 +489,21 @@ static struct i2c_board_info __initdata dns323_i2c_devices[] = {
},
};
+/*
+ * 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
+ */
+static struct 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 */
static void dns323a_power_off(void)
{
@@ -413,19 +521,103 @@ static void dns323b_power_off(void)
gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
}
+/* DNS-323 rev. C specific power off method */
+static void dns323c_power_off(void)
+{
+ pr_info("%s: triggering power-off...\n", __func__);
+ gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
+}
+
+static int __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
+ */
+
+#define ETH_SMI_REG (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
+#define SMI_BUSY 0x10000000
+#define SMI_READ_VALID 0x08000000
+#define SMI_OPCODE_READ 0x04000000
+#define SMI_OPCODE_WRITE 0x00000000
+
+ for (i = 0; i < 1000; i++) {
+ reg = readl(ETH_SMI_REG);
+ if (!(reg & SMI_BUSY))
+ break;
+ }
+ if (i >= 1000) {
+ pr_warning("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_warning("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_warning("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
+ reg & 0xffff);
+ }
+ return DNS323_REV_B1;
+}
+
static void __init dns323_init(void)
{
+ console_loglevel = 10;
+
/* Setup basic Orion functions. Need to be called early. */
orion5x_init();
+ /* Identify revision */
+ system_rev = dns323_identify_rev();
+ pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
+
/* Just to be tricky, the 5182 has a completely different
* set of MPP modes to the 5181.
*/
- if (dns323_dev_id() == MV88F5182_DEV_ID)
- orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
- else {
- orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
+ 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;
}
/* setup flash mapping
@@ -434,52 +626,89 @@ static void __init dns323_init(void)
orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
platform_device_register(&dns323_nor_flash);
- /* The 5181 power LED is active low and requires
- * DNS323_GPIO_LED_POWER1 to also be low.
- */
- if (dns323_dev_id() == MV88F5181_DEV_ID) {
- dns323_leds[0].active_low = 1;
- gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
+ /* 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.
+ */
+ dns323ab_leds[0].active_low = 1;
+ gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
+ /* Fall through */
+ case DNS323_REV_B1:
+ i2c_register_board_info(0, dns323ab_i2c_devices,
+ ARRAY_SIZE(dns323ab_i2c_devices));
+ break;
+ case DNS323_REV_C1:
+ /* Hookup LEDs & Buttons */
+ dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
+ dns323_button_device.dev.platform_data = &dns323c_button_data;
+ /* 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);
}
platform_device_register(&dns323_gpio_leds);
-
platform_device_register(&dns323_button_device);
- i2c_register_board_info(0, dns323_i2c_devices,
- ARRAY_SIZE(dns323_i2c_devices));
-
/*
* Configure peripherals.
*/
if (dns323_read_mac_addr() < 0)
- printk("DNS323: Failed to read MAC address\n");
-
+ printk("DNS-323: Failed to read MAC address\n");
orion5x_ehci0_init();
orion5x_eth_init(&dns323_eth_data);
orion5x_i2c_init();
orion5x_uart0_init();
- /* The 5182 has its SATA controller on-chip, and needs its own little
- * init routine.
- */
- if (dns323_dev_id() == MV88F5182_DEV_ID)
+ /* 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");
+ pm_power_off = dns323a_power_off;
+ break;
+ case DNS323_REV_B1:
+ /* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
- /* The 5182 has flag to indicate the system is up. Without this flag
- * set, power LED will flash and cannot be controlled via leds-gpio.
- */
- if (dns323_dev_id() == MV88F5182_DEV_ID)
- gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);
-
- /* Register dns323 specific power-off method */
- if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
- gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
- pr_err("DNS323: failed to setup power-off GPIO\n");
- if (dns323_dev_id() == MV88F5182_DEV_ID)
+ /* 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");
pm_power_off = dns323b_power_off;
- else
- pm_power_off = dns323a_power_off;
+ break;
+ case DNS323_REV_C1:
+ /* 5182 built-in SATA init */
+ orion5x_sata_init(&dns323_sata_data);
+
+ /* Poweroff GPIO */
+ if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
+ gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
+ pr_err("DNS-323: failed to setup power-off GPIO\n");
+ pm_power_off = dns323c_power_off;
+
+ /* Now, -this- should theorically 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 treatement but I'll let
+ * somebody else test it.
+ */
+ writel(0x5, ORION5X_SATA_VIRT_BASE | 0x2c);
+ break;
+ }
}
/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
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