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path: root/drivers/macintosh/smu.c
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Diffstat (limited to 'drivers/macintosh/smu.c')
-rw-r--r--drivers/macintosh/smu.c46
1 files changed, 22 insertions, 24 deletions
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 0a0b8e1f4236..a1534cc6c641 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* PowerMac G5 SMU driver
*
* Copyright 2004 J. Mayer <l_indien@magic.fr>
* Copyright 2005 Benjamin Herrenschmidt, IBM Corp.
- *
- * Released under the term of the GNU GPL v2.
*/
/*
@@ -34,15 +33,16 @@
#include <linux/delay.h>
#include <linux/poll.h>
#include <linux/mutex.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/sched/signal.h>
#include <asm/byteorder.h>
#include <asm/io.h>
-#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/smu.h>
@@ -133,7 +133,7 @@ static void smu_start_cmd(void)
/* Flush command and data to RAM */
faddr = (unsigned long)smu->cmd_buf;
fend = faddr + smu->cmd_buf->length + 2;
- flush_inval_dcache_range(faddr, fend);
+ flush_dcache_range(faddr, fend);
/* We also disable NAP mode for the duration of the command
@@ -195,7 +195,7 @@ static irqreturn_t smu_db_intr(int irq, void *arg)
* reply length (it's only 2 cache lines anyway)
*/
faddr = (unsigned long)smu->cmd_buf;
- flush_inval_dcache_range(faddr, faddr + 256);
+ flush_dcache_range(faddr, faddr + 256);
/* Now check ack */
ack = (~cmd->cmd) & 0xff;
@@ -472,7 +472,7 @@ EXPORT_SYMBOL(smu_present);
int __init smu_init (void)
{
struct device_node *np;
- const u32 *data;
+ u64 data;
int ret = 0;
np = of_find_node_by_type(NULL, "smu");
@@ -485,15 +485,14 @@ int __init smu_init (void)
* SMU based G5s need some memory below 2Gb. Thankfully this is
* called at a time where memblock is still available.
*/
- smu_cmdbuf_abs = memblock_alloc_base(4096, 4096, 0x80000000UL);
+ smu_cmdbuf_abs = memblock_phys_alloc_range(4096, 4096, 0, 0x80000000UL);
if (smu_cmdbuf_abs == 0) {
printk(KERN_ERR "SMU: Command buffer allocation failed !\n");
ret = -EINVAL;
goto fail_np;
}
- smu = memblock_alloc(sizeof(struct smu_device), SMP_CACHE_BYTES);
-
+ smu = memblock_alloc_or_panic(sizeof(struct smu_device), SMP_CACHE_BYTES);
spin_lock_init(&smu->lock);
INIT_LIST_HEAD(&smu->cmd_list);
INIT_LIST_HEAD(&smu->cmd_i2c_list);
@@ -513,8 +512,7 @@ int __init smu_init (void)
ret = -ENXIO;
goto fail_bootmem;
}
- data = of_get_property(smu->db_node, "reg", NULL);
- if (data == NULL) {
+ if (of_property_read_reg(smu->db_node, 0, &data, NULL)) {
printk(KERN_ERR "SMU: Can't find doorbell GPIO address !\n");
ret = -ENXIO;
goto fail_db_node;
@@ -524,7 +522,7 @@ int __init smu_init (void)
* and ack. GPIOs are at 0x50, best would be to find that out
* in the device-tree though.
*/
- smu->doorbell = *data;
+ smu->doorbell = data;
if (smu->doorbell < 0x50)
smu->doorbell += 0x50;
@@ -533,13 +531,12 @@ int __init smu_init (void)
smu->msg_node = of_find_node_by_name(NULL, "smu-interrupt");
if (smu->msg_node == NULL)
break;
- data = of_get_property(smu->msg_node, "reg", NULL);
- if (data == NULL) {
+ if (of_property_read_reg(smu->msg_node, 0, &data, NULL)) {
of_node_put(smu->msg_node);
smu->msg_node = NULL;
break;
}
- smu->msg = *data;
+ smu->msg = data;
if (smu->msg < 0x50)
smu->msg += 0x50;
} while(0);
@@ -568,7 +565,7 @@ fail_msg_node:
fail_db_node:
of_node_put(smu->db_node);
fail_bootmem:
- memblock_free(__pa(smu), sizeof(struct smu_device));
+ memblock_free(smu, sizeof(struct smu_device));
smu = NULL;
fail_np:
of_node_put(np);
@@ -636,7 +633,7 @@ static void smu_expose_childs(struct work_struct *unused)
{
struct device_node *np;
- for (np = NULL; (np = of_get_next_child(smu->of_node, np)) != NULL;)
+ for_each_child_of_node(smu->of_node, np)
if (of_device_is_compatible(np, "smu-sensors"))
of_platform_device_create(np, "smu-sensors",
&smu->of_dev->dev);
@@ -846,10 +843,12 @@ int smu_queue_i2c(struct smu_i2c_cmd *cmd)
cmd->read = cmd->info.devaddr & 0x01;
switch(cmd->info.type) {
case SMU_I2C_TRANSFER_SIMPLE:
- memset(&cmd->info.sublen, 0, 4);
+ cmd->info.sublen = 0;
+ memset(cmd->info.subaddr, 0, sizeof(cmd->info.subaddr));
break;
case SMU_I2C_TRANSFER_COMBINED:
cmd->info.devaddr &= 0xfe;
+ fallthrough;
case SMU_I2C_TRANSFER_STDSUB:
if (cmd->info.sublen > 3)
return -EINVAL;
@@ -1012,7 +1011,7 @@ static struct smu_sdbp_header *smu_create_sdb_partition(int id)
/* Note: Only allowed to return error code in pointers (using ERR_PTR)
* when interruptible is 1
*/
-const struct smu_sdbp_header *__smu_get_sdb_partition(int id,
+static const struct smu_sdbp_header *__smu_get_sdb_partition(int id,
unsigned int *size, int interruptible)
{
char pname[32];
@@ -1083,7 +1082,7 @@ static int smu_open(struct inode *inode, struct file *file)
unsigned long flags;
pp = kzalloc(sizeof(struct smu_private), GFP_KERNEL);
- if (pp == 0)
+ if (!pp)
return -ENOMEM;
spin_lock_init(&pp->lock);
pp->mode = smu_file_commands;
@@ -1250,7 +1249,7 @@ static __poll_t smu_fpoll(struct file *file, poll_table *wait)
__poll_t mask = 0;
unsigned long flags;
- if (pp == 0)
+ if (!pp)
return 0;
if (pp->mode == smu_file_commands) {
@@ -1273,7 +1272,7 @@ static int smu_release(struct inode *inode, struct file *file)
unsigned long flags;
unsigned int busy;
- if (pp == 0)
+ if (!pp)
return 0;
file->private_data = NULL;
@@ -1311,7 +1310,6 @@ static int smu_release(struct inode *inode, struct file *file)
static const struct file_operations smu_device_fops = {
- .llseek = no_llseek,
.read = smu_read,
.write = smu_write,
.poll = smu_fpoll,
generated by cgit (git 2.34.1) at 2025-12-24 21:58:02 +0000