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Memory controller drivers for v6.9

Browse Source 
1. TI EMIF: Simplify handling CONFIG_DEBUG_FS, CONFIG_OF and
    platform_driver_probe().
 2. Narrow regex in Nvidia Tegra20 EMC binding.
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Merge tag 'memory-controller-drv-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into soc/drivers

Memory controller drivers for v6.9

1. TI EMIF: Simplify handling CONFIG_DEBUG_FS, CONFIG_OF and
   platform_driver_probe().
2. Narrow regex in Nvidia Tegra20 EMC binding.

* tag 'memory-controller-drv-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  dt-bindings: memory-controllers: narrow regex for unit address to hex numbers
  memory: emif: Drop usage of platform_driver_probe()
  memory: emif: Simplify code handling CONFIG_OF
  memory: emif: Simplify code handling CONFIG_DEBUG_FS

Link: https://lore.kernel.org/r/20240218183046.32721-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2024-02-20 22:04:03 +01:00
commit d22ee157fb
2 changed files with 25 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.yaml
View File

@ -145,7 +145,7 @@ patternProperties:
"^emc-table@[0-9]+$":
$ref: "#/$defs/emc-table"
"^emc-tables@[a-z0-9-]+$":
"^emc-tables@[a-f0-9-]+$":
type: object
properties:
reg:

65
drivers/memory/emif.c
View File

@ -72,7 +72,6 @@ static DEFINE_SPINLOCK(emif_lock);
static unsigned long irq_state;
static LIST_HEAD(device_list);
#ifdef CONFIG_DEBUG_FS
static void do_emif_regdump_show(struct seq_file *s, struct emif_data *emif,
struct emif_regs *regs)
{
@ -140,31 +139,24 @@ static int emif_mr4_show(struct seq_file *s, void *unused)
DEFINE_SHOW_ATTRIBUTE(emif_mr4);
static int __init_or_module emif_debugfs_init(struct emif_data *emif)
static void emif_debugfs_init(struct emif_data *emif)
{
emif->debugfs_root = debugfs_create_dir(dev_name(emif->dev), NULL);
debugfs_create_file("regcache_dump", S_IRUGO, emif->debugfs_root, emif,
&emif_regdump_fops);
debugfs_create_file("mr4", S_IRUGO, emif->debugfs_root, emif,
&emif_mr4_fops);
return 0;
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
emif->debugfs_root = debugfs_create_dir(dev_name(emif->dev), NULL);
debugfs_create_file("regcache_dump", S_IRUGO, emif->debugfs_root, emif,
&emif_regdump_fops);
debugfs_create_file("mr4", S_IRUGO, emif->debugfs_root, emif,
&emif_mr4_fops);
}
}
static void __exit emif_debugfs_exit(struct emif_data *emif)
static void emif_debugfs_exit(struct emif_data *emif)
{
debugfs_remove_recursive(emif->debugfs_root);
emif->debugfs_root = NULL;
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
debugfs_remove_recursive(emif->debugfs_root);
emif->debugfs_root = NULL;
}
}
#else
static inline int __init_or_module emif_debugfs_init(struct emif_data *emif)
{
return 0;
}
static inline void __exit emif_debugfs_exit(struct emif_data *emif)
{
}
#endif
/*
* Get bus width used by EMIF. Note that this may be different from the
@ -679,7 +671,7 @@ static void disable_and_clear_all_interrupts(struct emif_data *emif)
clear_all_interrupts(emif);
}
static int __init_or_module setup_interrupts(struct emif_data *emif, u32 irq)
static int setup_interrupts(struct emif_data *emif, u32 irq)
{
u32 interrupts, type;
void __iomem *base = emif->base;
@ -710,7 +702,7 @@ static int __init_or_module setup_interrupts(struct emif_data *emif, u32 irq)
}
static void __init_or_module emif_onetime_settings(struct emif_data *emif)
static void emif_onetime_settings(struct emif_data *emif)
{
u32 pwr_mgmt_ctrl, zq, temp_alert_cfg;
void __iomem *base = emif->base;
@ -834,8 +826,7 @@ static int is_custom_config_valid(struct emif_custom_configs *cust_cfgs,
return valid;
}
#if defined(CONFIG_OF)
static void __init_or_module of_get_custom_configs(struct device_node *np_emif,
static void of_get_custom_configs(struct device_node *np_emif,
struct emif_data *emif)
{
struct emif_custom_configs *cust_cfgs = NULL;
@ -884,7 +875,7 @@ static void __init_or_module of_get_custom_configs(struct device_node *np_emif,
emif->plat_data->custom_configs = cust_cfgs;
}
static void __init_or_module of_get_ddr_info(struct device_node *np_emif,
static void of_get_ddr_info(struct device_node *np_emif,
struct device_node *np_ddr,
struct ddr_device_info *dev_info)
{
@ -918,7 +909,7 @@ static void __init_or_module of_get_ddr_info(struct device_node *np_emif,
dev_info->io_width = __fls(io_width) - 1;
}
static struct emif_data * __init_or_module of_get_memory_device_details(
static struct emif_data *of_get_memory_device_details(
struct device_node *np_emif, struct device *dev)
{
struct emif_data *emif = NULL;
@ -991,16 +982,7 @@ static struct emif_data * __init_or_module of_get_memory_device_details(
return emif;
}
#else
static struct emif_data * __init_or_module of_get_memory_device_details(
struct device_node *np_emif, struct device *dev)
{
return NULL;
}
#endif
static struct emif_data *__init_or_module get_device_details(
static struct emif_data *get_device_details(
struct platform_device *pdev)
{
u32 size;
@ -1104,7 +1086,7 @@ static struct emif_data *__init_or_module get_device_details(
return NULL;
}
static int __init_or_module emif_probe(struct platform_device *pdev)
static int emif_probe(struct platform_device *pdev)
{
struct emif_data *emif;
int irq, ret;
@ -1159,7 +1141,7 @@ static int __init_or_module emif_probe(struct platform_device *pdev)
return -ENODEV;
}
static void __exit emif_remove(struct platform_device *pdev)
static void emif_remove(struct platform_device *pdev)
{
struct emif_data *emif = platform_get_drvdata(pdev);
@ -1183,7 +1165,8 @@ MODULE_DEVICE_TABLE(of, emif_of_match);
#endif
static struct platform_driver emif_driver = {
.remove_new = __exit_p(emif_remove),
.probe = emif_probe,
.remove_new = emif_remove,
.shutdown = emif_shutdown,
.driver = {
.name = "emif",
@ -1191,7 +1174,7 @@ static struct platform_driver emif_driver = {
},
};
module_platform_driver_probe(emif_driver, emif_probe);
module_platform_driver(emif_driver);
MODULE_DESCRIPTION("TI EMIF SDRAM Controller Driver");
MODULE_LICENSE("GPL");