mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 06:31:52 +00:00
[POWERPC] PIKA Warp: Update platform code to support Rev B boards
* Switched from 64M NOR/64M NAND to 4M NOR/256M NAND. * Full DTM support including critical temperature. * Added POST information. * Removed LED function, moved to new LED driver. * Moved ad7414 to new style I2C initialization. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Sean MacLennan
Josh Boyer
parent
0393cb615f
commit
4ebef31fa6
@ -10,6 +10,7 @@
|
||||
#include "ops.h"
|
||||
#include "4xx.h"
|
||||
#include "cuboot.h"
|
||||
#include "stdio.h"
|
||||
|
||||
#define TARGET_4xx
|
||||
#define TARGET_44x
|
||||
@ -17,14 +18,54 @@
|
||||
|
||||
static bd_t bd;
|
||||
|
||||
static void warp_fixup_one_nor(u32 from, u32 to)
|
||||
{
|
||||
void *devp;
|
||||
char name[50];
|
||||
u32 v[2];
|
||||
|
||||
sprintf(name, "/plb/opb/ebc/nor_flash@0,0/partition@%x", from);
|
||||
|
||||
devp = finddevice(name);
|
||||
if (!devp)
|
||||
return;
|
||||
|
||||
if (getprop(devp, "reg", v, sizeof(v)) == sizeof(v)) {
|
||||
v[0] = to;
|
||||
setprop(devp, "reg", v, sizeof(v));
|
||||
|
||||
printf("NOR 64M fixup %x -> %x\r\n", from, to);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void warp_fixups(void)
|
||||
{
|
||||
unsigned long sysclk = 66000000;
|
||||
|
||||
ibm440ep_fixup_clocks(sysclk, 11059200, 50000000);
|
||||
ibm440ep_fixup_clocks(66000000, 11059200, 50000000);
|
||||
ibm4xx_sdram_fixup_memsize();
|
||||
ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
|
||||
dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
|
||||
|
||||
/* Fixup for 64M flash on Rev A boards. */
|
||||
if (bd.bi_flashsize == 0x4000000) {
|
||||
void *devp;
|
||||
u32 v[3];
|
||||
|
||||
devp = finddevice("/plb/opb/ebc/nor_flash@0,0");
|
||||
if (!devp)
|
||||
return;
|
||||
|
||||
/* Fixup the size */
|
||||
if (getprop(devp, "reg", v, sizeof(v)) == sizeof(v)) {
|
||||
v[2] = bd.bi_flashsize;
|
||||
setprop(devp, "reg", v, sizeof(v));
|
||||
}
|
||||
|
||||
/* Fixup parition offsets */
|
||||
warp_fixup_one_nor(0x300000, 0x3f00000);
|
||||
warp_fixup_one_nor(0x340000, 0x3f40000);
|
||||
warp_fixup_one_nor(0x380000, 0x3f80000);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -11,8 +11,10 @@
|
||||
#include <linux/mtd/partitions.h>
|
||||
#include <linux/mtd/nand.h>
|
||||
#include <linux/mtd/ndfc.h>
|
||||
#include <linux/of.h>
|
||||
#include <asm/machdep.h>
|
||||
|
||||
|
||||
#ifdef CONFIG_MTD_NAND_NDFC
|
||||
|
||||
#define CS_NAND_0 1 /* use chip select 1 for NAND device 0 */
|
||||
@ -35,13 +37,23 @@ static struct mtd_partition nand_parts[] = {
|
||||
{
|
||||
.name = "root",
|
||||
.offset = 0x0200000,
|
||||
.size = 0x3400000
|
||||
.size = 0x3E00000
|
||||
},
|
||||
{
|
||||
.name = "user",
|
||||
.offset = 0x3600000,
|
||||
.size = 0x0A00000
|
||||
.name = "persistent",
|
||||
.offset = 0x4000000,
|
||||
.size = 0x4000000
|
||||
},
|
||||
{
|
||||
.name = "persistent1",
|
||||
.offset = 0x8000000,
|
||||
.size = 0x4000000
|
||||
},
|
||||
{
|
||||
.name = "persistent2",
|
||||
.offset = 0xC000000,
|
||||
.size = 0x4000000
|
||||
}
|
||||
};
|
||||
|
||||
struct ndfc_controller_settings warp_ndfc_settings = {
|
||||
@ -67,19 +79,15 @@ static struct platform_device warp_ndfc_device = {
|
||||
.resource = &warp_ndfc,
|
||||
};
|
||||
|
||||
static struct nand_ecclayout nand_oob_16 = {
|
||||
.eccbytes = 3,
|
||||
.eccpos = { 0, 1, 2, 3, 6, 7 },
|
||||
.oobfree = { {.offset = 8, .length = 16} }
|
||||
};
|
||||
|
||||
/* Do NOT set the ecclayout: let it default so it is correct for both
|
||||
* 64M and 256M flash chips.
|
||||
*/
|
||||
static struct platform_nand_chip warp_nand_chip0 = {
|
||||
.nr_chips = 1,
|
||||
.chip_offset = CS_NAND_0,
|
||||
.nr_partitions = ARRAY_SIZE(nand_parts),
|
||||
.partitions = nand_parts,
|
||||
.chip_delay = 50,
|
||||
.ecclayout = &nand_oob_16,
|
||||
.chip_delay = 20,
|
||||
.priv = &warp_chip0_settings,
|
||||
};
|
||||
|
||||
@ -96,6 +104,23 @@ static struct platform_device warp_nand_device = {
|
||||
|
||||
static int warp_setup_nand_flash(void)
|
||||
{
|
||||
struct device_node *np;
|
||||
|
||||
/* Try to detect a rev A based on NOR size. */
|
||||
np = of_find_compatible_node(NULL, NULL, "cfi-flash");
|
||||
if (np) {
|
||||
struct property *pp;
|
||||
|
||||
pp = of_find_property(np, "reg", NULL);
|
||||
if (pp && (pp->length == 12)) {
|
||||
u32 *v = pp->value;
|
||||
if (v[2] == 0x4000000)
|
||||
/* Rev A = 64M NAND */
|
||||
warp_nand_chip0.nr_partitions = 2;
|
||||
}
|
||||
of_node_put(np);
|
||||
}
|
||||
|
||||
platform_device_register(&warp_ndfc_device);
|
||||
platform_device_register(&warp_nand_device);
|
||||
|
||||
|
||||
@ -12,6 +12,9 @@
|
||||
#include <linux/init.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/kthread.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/delay.h>
|
||||
|
||||
#include <asm/machdep.h>
|
||||
#include <asm/prom.h>
|
||||
@ -27,6 +30,18 @@ static __initdata struct of_device_id warp_of_bus[] = {
|
||||
{},
|
||||
};
|
||||
|
||||
static __initdata struct i2c_board_info warp_i2c_info[] = {
|
||||
{ I2C_BOARD_INFO("ad7414", 0x4a) }
|
||||
};
|
||||
|
||||
static int __init warp_arch_init(void)
|
||||
{
|
||||
/* This should go away once support is moved to the dts. */
|
||||
i2c_register_board_info(0, warp_i2c_info, ARRAY_SIZE(warp_i2c_info));
|
||||
return 0;
|
||||
}
|
||||
machine_arch_initcall(warp, warp_arch_init);
|
||||
|
||||
static int __init warp_device_probe(void)
|
||||
{
|
||||
of_platform_bus_probe(NULL, warp_of_bus, NULL);
|
||||
@ -52,61 +67,232 @@ define_machine(warp) {
|
||||
};
|
||||
|
||||
|
||||
#define LED_GREEN (0x80000000 >> 0)
|
||||
#define LED_RED (0x80000000 >> 1)
|
||||
|
||||
|
||||
/* This is for the power LEDs 1 = on, 0 = off, -1 = leave alone */
|
||||
void warp_set_power_leds(int green, int red)
|
||||
/* I am not sure this is the best place for this... */
|
||||
static int __init warp_post_info(void)
|
||||
{
|
||||
static void __iomem *gpio_base = NULL;
|
||||
unsigned leds;
|
||||
struct device_node *np;
|
||||
void __iomem *fpga;
|
||||
u32 post1, post2;
|
||||
|
||||
if (gpio_base == NULL) {
|
||||
struct device_node *np;
|
||||
/* Sighhhh... POST information is in the sd area. */
|
||||
np = of_find_compatible_node(NULL, NULL, "pika,fpga-sd");
|
||||
if (np == NULL)
|
||||
return -ENOENT;
|
||||
|
||||
/* Power LEDS are on the second GPIO controller */
|
||||
np = of_find_compatible_node(NULL, NULL, "ibm,gpio-440EP");
|
||||
if (np)
|
||||
np = of_find_compatible_node(np, NULL, "ibm,gpio-440EP");
|
||||
if (np == NULL) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to find gpio\n");
|
||||
return;
|
||||
}
|
||||
fpga = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
if (fpga == NULL)
|
||||
return -ENOENT;
|
||||
|
||||
gpio_base = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
if (gpio_base == NULL) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to map gpio");
|
||||
return;
|
||||
}
|
||||
}
|
||||
post1 = in_be32(fpga + 0x40);
|
||||
post2 = in_be32(fpga + 0x44);
|
||||
|
||||
leds = in_be32(gpio_base);
|
||||
iounmap(fpga);
|
||||
|
||||
switch (green) {
|
||||
case 0: leds &= ~LED_GREEN; break;
|
||||
case 1: leds |= LED_GREEN; break;
|
||||
}
|
||||
switch (red) {
|
||||
case 0: leds &= ~LED_RED; break;
|
||||
case 1: leds |= LED_RED; break;
|
||||
}
|
||||
if (post1 || post2)
|
||||
printk(KERN_INFO "Warp POST %08x %08x\n", post1, post2);
|
||||
else
|
||||
printk(KERN_INFO "Warp POST OK\n");
|
||||
|
||||
out_be32(gpio_base, leds);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(warp_set_power_leds);
|
||||
machine_late_initcall(warp, warp_post_info);
|
||||
|
||||
|
||||
#ifdef CONFIG_SENSORS_AD7414
|
||||
|
||||
static LIST_HEAD(dtm_shutdown_list);
|
||||
static void __iomem *dtm_fpga;
|
||||
static void __iomem *gpio_base;
|
||||
|
||||
|
||||
struct dtm_shutdown {
|
||||
struct list_head list;
|
||||
void (*func)(void *arg);
|
||||
void *arg;
|
||||
};
|
||||
|
||||
|
||||
int pika_dtm_register_shutdown(void (*func)(void *arg), void *arg)
|
||||
{
|
||||
struct dtm_shutdown *shutdown;
|
||||
|
||||
shutdown = kmalloc(sizeof(struct dtm_shutdown), GFP_KERNEL);
|
||||
if (shutdown == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
shutdown->func = func;
|
||||
shutdown->arg = arg;
|
||||
|
||||
list_add(&shutdown->list, &dtm_shutdown_list);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
|
||||
{
|
||||
struct dtm_shutdown *shutdown;
|
||||
|
||||
list_for_each_entry(shutdown, &dtm_shutdown_list, list)
|
||||
if (shutdown->func == func && shutdown->arg == arg) {
|
||||
list_del(&shutdown->list);
|
||||
kfree(shutdown);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static irqreturn_t temp_isr(int irq, void *context)
|
||||
{
|
||||
struct dtm_shutdown *shutdown;
|
||||
|
||||
local_irq_disable();
|
||||
|
||||
/* Run through the shutdown list. */
|
||||
list_for_each_entry(shutdown, &dtm_shutdown_list, list)
|
||||
shutdown->func(shutdown->arg);
|
||||
|
||||
printk(KERN_EMERG "\n\nCritical Temperature Shutdown\n");
|
||||
|
||||
while (1) {
|
||||
if (dtm_fpga) {
|
||||
unsigned reset = in_be32(dtm_fpga + 0x14);
|
||||
out_be32(dtm_fpga + 0x14, reset);
|
||||
}
|
||||
|
||||
if (gpio_base) {
|
||||
unsigned leds = in_be32(gpio_base);
|
||||
|
||||
/* green off, red toggle */
|
||||
leds &= ~0x80000000;
|
||||
leds ^= 0x40000000;
|
||||
|
||||
out_be32(gpio_base, leds);
|
||||
}
|
||||
|
||||
mdelay(500);
|
||||
}
|
||||
}
|
||||
|
||||
static int pika_setup_leds(void)
|
||||
{
|
||||
struct device_node *np;
|
||||
const u32 *gpios;
|
||||
int len;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "linux,gpio-led");
|
||||
if (!np) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to find gpio-led\n");
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
gpios = of_get_property(np, "gpios", &len);
|
||||
of_node_put(np);
|
||||
if (!gpios || len < 4) {
|
||||
printk(KERN_ERR __FILE__
|
||||
": Unable to get gpios property (%d)\n", len);
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
np = of_find_node_by_phandle(gpios[0]);
|
||||
if (!np) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to find gpio\n");
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
gpio_base = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
if (!gpio_base) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to map gpio");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void pika_setup_critical_temp(struct i2c_client *client)
|
||||
{
|
||||
struct device_node *np;
|
||||
int irq, rc;
|
||||
|
||||
/* Do this before enabling critical temp interrupt since we
|
||||
* may immediately interrupt.
|
||||
*/
|
||||
pika_setup_leds();
|
||||
|
||||
/* These registers are in 1 degree increments. */
|
||||
i2c_smbus_write_byte_data(client, 2, 65); /* Thigh */
|
||||
i2c_smbus_write_byte_data(client, 3, 55); /* Tlow */
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "adi,ad7414");
|
||||
if (np == NULL) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to find ad7414\n");
|
||||
return;
|
||||
}
|
||||
|
||||
irq = irq_of_parse_and_map(np, 0);
|
||||
of_node_put(np);
|
||||
if (irq == NO_IRQ) {
|
||||
printk(KERN_ERR __FILE__ ": Unable to get ad7414 irq\n");
|
||||
return;
|
||||
}
|
||||
|
||||
rc = request_irq(irq, temp_isr, 0, "ad7414", NULL);
|
||||
if (rc) {
|
||||
printk(KERN_ERR __FILE__
|
||||
": Unable to request ad7414 irq %d = %d\n", irq, rc);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static inline void pika_dtm_check_fan(void __iomem *fpga)
|
||||
{
|
||||
static int fan_state;
|
||||
u32 fan = in_be32(fpga + 0x34) & (1 << 14);
|
||||
|
||||
if (fan_state != fan) {
|
||||
fan_state = fan;
|
||||
if (fan)
|
||||
printk(KERN_WARNING "Fan rotation error detected."
|
||||
" Please check hardware.\n");
|
||||
}
|
||||
}
|
||||
|
||||
static int pika_dtm_thread(void __iomem *fpga)
|
||||
{
|
||||
extern int ad7414_get_temp(int index);
|
||||
struct i2c_adapter *adap;
|
||||
struct i2c_client *client;
|
||||
|
||||
/* We loop in case either driver was compiled as a module and
|
||||
* has not been insmoded yet.
|
||||
*/
|
||||
while (!(adap = i2c_get_adapter(0))) {
|
||||
set_current_state(TASK_INTERRUPTIBLE);
|
||||
schedule_timeout(HZ);
|
||||
}
|
||||
|
||||
while (1) {
|
||||
list_for_each_entry(client, &adap->clients, list)
|
||||
if (client->addr == 0x4a)
|
||||
goto found_it;
|
||||
|
||||
set_current_state(TASK_INTERRUPTIBLE);
|
||||
schedule_timeout(HZ);
|
||||
}
|
||||
|
||||
found_it:
|
||||
i2c_put_adapter(adap);
|
||||
|
||||
pika_setup_critical_temp(client);
|
||||
|
||||
printk(KERN_INFO "PIKA DTM thread running.\n");
|
||||
|
||||
while (!kthread_should_stop()) {
|
||||
int temp = ad7414_get_temp(0);
|
||||
u16 temp = swab16(i2c_smbus_read_word_data(client, 0));
|
||||
out_be32(fpga + 0x20, temp);
|
||||
|
||||
out_be32(fpga, temp);
|
||||
pika_dtm_check_fan(fpga);
|
||||
|
||||
set_current_state(TASK_INTERRUPTIBLE);
|
||||
schedule_timeout(HZ);
|
||||
@ -115,37 +301,44 @@ static int pika_dtm_thread(void __iomem *fpga)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int __init pika_dtm_start(void)
|
||||
{
|
||||
struct task_struct *dtm_thread;
|
||||
struct device_node *np;
|
||||
struct resource res;
|
||||
void __iomem *fpga;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "pika,fpga");
|
||||
if (np == NULL)
|
||||
return -ENOENT;
|
||||
|
||||
/* We do not call of_iomap here since it would map in the entire
|
||||
* fpga space, which is over 8k.
|
||||
*/
|
||||
if (of_address_to_resource(np, 0, &res)) {
|
||||
of_node_put(np);
|
||||
return -ENOENT;
|
||||
}
|
||||
dtm_fpga = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
|
||||
fpga = ioremap(res.start, 0x24);
|
||||
if (fpga == NULL)
|
||||
if (dtm_fpga == NULL)
|
||||
return -ENOENT;
|
||||
|
||||
dtm_thread = kthread_run(pika_dtm_thread, fpga + 0x20, "pika-dtm");
|
||||
dtm_thread = kthread_run(pika_dtm_thread, dtm_fpga, "pika-dtm");
|
||||
if (IS_ERR(dtm_thread)) {
|
||||
iounmap(fpga);
|
||||
iounmap(dtm_fpga);
|
||||
return PTR_ERR(dtm_thread);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
device_initcall(pika_dtm_start);
|
||||
machine_late_initcall(warp, pika_dtm_start);
|
||||
|
||||
#else /* !CONFIG_SENSORS_AD7414 */
|
||||
|
||||
int pika_dtm_register_shutdown(void (*func)(void *arg), void *arg)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
EXPORT_SYMBOL(pika_dtm_register_shutdown);
|
||||
EXPORT_SYMBOL(pika_dtm_unregister_shutdown);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user