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path: root/drivers/platform/x86/dell-laptop.c
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Diffstat (limited to 'drivers/platform/x86/dell-laptop.c')
-rw-r--r--drivers/platform/x86/dell-laptop.c283
1 files changed, 105 insertions, 178 deletions
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index f42159fd2031..c4903c5ce7cf 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -35,18 +35,6 @@
#include "dell-rbtn.h"
#include "dell-smbios.h"
-#define BRIGHTNESS_TOKEN 0x7d
-#define KBD_LED_OFF_TOKEN 0x01E1
-#define KBD_LED_ON_TOKEN 0x01E2
-#define KBD_LED_AUTO_TOKEN 0x01E3
-#define KBD_LED_AUTO_25_TOKEN 0x02EA
-#define KBD_LED_AUTO_50_TOKEN 0x02EB
-#define KBD_LED_AUTO_75_TOKEN 0x02EC
-#define KBD_LED_AUTO_100_TOKEN 0x02F6
-#define GLOBAL_MIC_MUTE_ENABLE 0x0364
-#define GLOBAL_MIC_MUTE_DISABLE 0x0365
-#define KBD_LED_AC_TOKEN 0x0451
-
struct quirk_entry {
u8 touchpad_led;
@@ -85,6 +73,7 @@ static struct platform_driver platform_driver = {
}
};
+static struct calling_interface_buffer *buffer;
static struct platform_device *platform_device;
static struct backlight_device *dell_backlight_device;
static struct rfkill *wifi_rfkill;
@@ -283,6 +272,27 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
{ }
};
+void dell_set_arguments(u32 arg0, u32 arg1, u32 arg2, u32 arg3)
+{
+ memset(buffer, 0, sizeof(struct calling_interface_buffer));
+ buffer->input[0] = arg0;
+ buffer->input[1] = arg1;
+ buffer->input[2] = arg2;
+ buffer->input[3] = arg3;
+}
+
+int dell_send_request(u16 class, u16 select)
+{
+ int ret;
+
+ buffer->cmd_class = class;
+ buffer->cmd_select = select;
+ ret = dell_smbios_call(buffer);
+ if (ret != 0)
+ return ret;
+ return dell_smbios_error(buffer->output[0]);
+}
+
/*
* Derived from information in smbios-wireless-ctl:
*
@@ -405,7 +415,6 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
static int dell_rfkill_set(void *data, bool blocked)
{
- struct calling_interface_buffer *buffer;
int disable = blocked ? 1 : 0;
unsigned long radio = (unsigned long)data;
int hwswitch_bit = (unsigned long)data - 1;
@@ -413,20 +422,16 @@ static int dell_rfkill_set(void *data, bool blocked)
int status;
int ret;
- buffer = dell_smbios_get_buffer();
-
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
+ if (ret)
+ return ret;
status = buffer->output[1];
- if (ret != 0)
- goto out;
-
- dell_smbios_clear_buffer();
-
- buffer->input[0] = 0x2;
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0x2, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
+ if (ret)
+ return ret;
hwswitch = buffer->output[1];
/* If the hardware switch controls this radio, and the hardware
@@ -435,28 +440,19 @@ static int dell_rfkill_set(void *data, bool blocked)
(status & BIT(0)) && !(status & BIT(16)))
disable = 1;
- dell_smbios_clear_buffer();
-
- buffer->input[0] = (1 | (radio<<8) | (disable << 16));
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
-
- out:
- dell_smbios_release_buffer();
- return dell_smbios_error(ret);
+ dell_set_arguments(1 | (radio<<8) | (disable << 16), 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
+ return ret;
}
-/* Must be called with the buffer held */
static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
- int status,
- struct calling_interface_buffer *buffer)
+ int status)
{
if (status & BIT(0)) {
/* Has hw-switch, sync sw_state to BIOS */
int block = rfkill_blocked(rfkill);
- dell_smbios_clear_buffer();
- buffer->input[0] = (1 | (radio << 8) | (block << 16));
- dell_smbios_send_request(17, 11);
+ dell_set_arguments(1 | (radio << 8) | (block << 16), 0, 0, 0);
+ dell_send_request(CLASS_INFO, SELECT_RFKILL);
} else {
/* No hw-switch, sync BIOS state to sw_state */
rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16)));
@@ -472,32 +468,23 @@ static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio,
static void dell_rfkill_query(struct rfkill *rfkill, void *data)
{
- struct calling_interface_buffer *buffer;
int radio = ((unsigned long)data & 0xF);
int hwswitch;
int status;
int ret;
- buffer = dell_smbios_get_buffer();
-
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
status = buffer->output[1];
if (ret != 0 || !(status & BIT(0))) {
- dell_smbios_release_buffer();
return;
}
- dell_smbios_clear_buffer();
-
- buffer->input[0] = 0x2;
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0x2, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
hwswitch = buffer->output[1];
- dell_smbios_release_buffer();
-
if (ret != 0)
return;
@@ -513,27 +500,23 @@ static struct dentry *dell_laptop_dir;
static int dell_debugfs_show(struct seq_file *s, void *data)
{
- struct calling_interface_buffer *buffer;
int hwswitch_state;
int hwswitch_ret;
int status;
int ret;
- buffer = dell_smbios_get_buffer();
-
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
+ if (ret)
+ return ret;
status = buffer->output[1];
- dell_smbios_clear_buffer();
-
- buffer->input[0] = 0x2;
- dell_smbios_send_request(17, 11);
- hwswitch_ret = buffer->output[0];
+ dell_set_arguments(0, 0x2, 0, 0);
+ hwswitch_ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
+ if (hwswitch_ret)
+ return hwswitch_ret;
hwswitch_state = buffer->output[1];
- dell_smbios_release_buffer();
-
seq_printf(s, "return:\t%d\n", ret);
seq_printf(s, "status:\t0x%X\n", status);
seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n",
@@ -613,46 +596,36 @@ static const struct file_operations dell_debugfs_fops = {
static void dell_update_rfkill(struct work_struct *ignored)
{
- struct calling_interface_buffer *buffer;
int hwswitch = 0;
int status;
int ret;
- buffer = dell_smbios_get_buffer();
-
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
status = buffer->output[1];
if (ret != 0)
- goto out;
-
- dell_smbios_clear_buffer();
+ return;
- buffer->input[0] = 0x2;
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0x2, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
if (ret == 0 && (status & BIT(0)))
hwswitch = buffer->output[1];
if (wifi_rfkill) {
dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch);
- dell_rfkill_update_sw_state(wifi_rfkill, 1, status, buffer);
+ dell_rfkill_update_sw_state(wifi_rfkill, 1, status);
}
if (bluetooth_rfkill) {
dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status,
hwswitch);
- dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status,
- buffer);
+ dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status);
}
if (wwan_rfkill) {
dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch);
- dell_rfkill_update_sw_state(wwan_rfkill, 3, status, buffer);
+ dell_rfkill_update_sw_state(wwan_rfkill, 3, status);
}
-
- out:
- dell_smbios_release_buffer();
}
static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill);
@@ -696,7 +669,6 @@ static struct notifier_block dell_laptop_rbtn_notifier = {
static int __init dell_setup_rfkill(void)
{
- struct calling_interface_buffer *buffer;
int status, ret, whitelisted;
const char *product;
@@ -712,11 +684,9 @@ static int __init dell_setup_rfkill(void)
if (!force_rfkill && !whitelisted)
return 0;
- buffer = dell_smbios_get_buffer();
- dell_smbios_send_request(17, 11);
- ret = buffer->output[0];
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_INFO, SELECT_RFKILL);
status = buffer->output[1];
- dell_smbios_release_buffer();
/* dell wireless info smbios call is not supported */
if (ret != 0)
@@ -869,7 +839,6 @@ static void dell_cleanup_rfkill(void)
static int dell_send_intensity(struct backlight_device *bd)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
int ret;
@@ -877,24 +846,17 @@ static int dell_send_intensity(struct backlight_device *bd)
if (!token)
return -ENODEV;
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
- buffer->input[1] = bd->props.brightness;
-
+ dell_set_arguments(token->location, bd->props.brightness, 0, 0);
if (power_supply_is_system_supplied() > 0)
- dell_smbios_send_request(1, 2);
+ ret = dell_send_request(CLASS_TOKEN_WRITE, SELECT_TOKEN_AC);
else
- dell_smbios_send_request(1, 1);
+ ret = dell_send_request(CLASS_TOKEN_WRITE, SELECT_TOKEN_BAT);
- ret = dell_smbios_error(buffer->output[0]);
-
- dell_smbios_release_buffer();
return ret;
}
static int dell_get_intensity(struct backlight_device *bd)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
int ret;
@@ -902,20 +864,14 @@ static int dell_get_intensity(struct backlight_device *bd)
if (!token)
return -ENODEV;
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
-
+ dell_set_arguments(token->location, 0, 0, 0);
if (power_supply_is_system_supplied() > 0)
- dell_smbios_send_request(0, 2);
+ ret = dell_send_request(CLASS_TOKEN_READ, SELECT_TOKEN_AC);
else
- dell_smbios_send_request(0, 1);
+ ret = dell_send_request(CLASS_TOKEN_READ, SELECT_TOKEN_BAT);
- if (buffer->output[0])
- ret = dell_smbios_error(buffer->output[0]);
- else
+ if (ret == 0)
ret = buffer->output[1];
-
- dell_smbios_release_buffer();
return ret;
}
@@ -1179,20 +1135,13 @@ static DEFINE_MUTEX(kbd_led_mutex);
static int kbd_get_info(struct kbd_info *info)
{
- struct calling_interface_buffer *buffer;
u8 units;
int ret;
- buffer = dell_smbios_get_buffer();
-
- buffer->input[0] = 0x0;
- dell_smbios_send_request(4, 11);
- ret = buffer->output[0];
-
- if (ret) {
- ret = dell_smbios_error(ret);
- goto out;
- }
+ dell_set_arguments(0, 0, 0, 0);
+ ret = dell_send_request(CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
+ if (ret)
+ return ret;
info->modes = buffer->output[1] & 0xFFFF;
info->type = (buffer->output[1] >> 24) & 0xFF;
@@ -1209,8 +1158,6 @@ static int kbd_get_info(struct kbd_info *info)
if (units & BIT(3))
info->days = (buffer->output[3] >> 24) & 0xFF;
- out:
- dell_smbios_release_buffer();
return ret;
}
@@ -1269,19 +1216,12 @@ static int kbd_set_level(struct kbd_state *state, u8 level)
static int kbd_get_state(struct kbd_state *state)
{
- struct calling_interface_buffer *buffer;
int ret;
- buffer = dell_smbios_get_buffer();
-
- buffer->input[0] = 0x1;
- dell_smbios_send_request(4, 11);
- ret = buffer->output[0];
-
- if (ret) {
- ret = dell_smbios_error(ret);
- goto out;
- }
+ dell_set_arguments(0x1, 0, 0, 0);
+ ret = dell_send_request(CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
+ if (ret)
+ return ret;
state->mode_bit = ffs(buffer->output[1] & 0xFFFF);
if (state->mode_bit != 0)
@@ -1296,31 +1236,27 @@ static int kbd_get_state(struct kbd_state *state)
state->timeout_value_ac = (buffer->output[2] >> 24) & 0x3F;
state->timeout_unit_ac = (buffer->output[2] >> 30) & 0x3;
- out:
- dell_smbios_release_buffer();
return ret;
}
static int kbd_set_state(struct kbd_state *state)
{
- struct calling_interface_buffer *buffer;
int ret;
+ u32 input1;
+ u32 input2;
+
+ input1 = BIT(state->mode_bit) & 0xFFFF;
+ input1 |= (state->triggers & 0xFF) << 16;
+ input1 |= (state->timeout_value & 0x3F) << 24;
+ input1 |= (state->timeout_unit & 0x3) << 30;
+ input2 = state->als_setting & 0xFF;
+ input2 |= (state->level & 0xFF) << 16;
+ input2 |= (state->timeout_value_ac & 0x3F) << 24;
+ input2 |= (state->timeout_unit_ac & 0x3) << 30;
+ dell_set_arguments(0x2, input1, input2, 0);
+ ret = dell_send_request(CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = 0x2;
- buffer->input[1] = BIT(state->mode_bit) & 0xFFFF;
- buffer->input[1] |= (state->triggers & 0xFF) << 16;
- buffer->input[1] |= (state->timeout_value & 0x3F) << 24;
- buffer->input[1] |= (state->timeout_unit & 0x3) << 30;
- buffer->input[2] = state->als_setting & 0xFF;
- buffer->input[2] |= (state->level & 0xFF) << 16;
- buffer->input[2] |= (state->timeout_value_ac & 0x3F) << 24;
- buffer->input[2] |= (state->timeout_unit_ac & 0x3) << 30;
- dell_smbios_send_request(4, 11);
- ret = buffer->output[0];
- dell_smbios_release_buffer();
-
- return dell_smbios_error(ret);
+ return ret;
}
static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old)
@@ -1345,7 +1281,6 @@ static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old)
static int kbd_set_token_bit(u8 bit)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
int ret;
@@ -1356,19 +1291,14 @@ static int kbd_set_token_bit(u8 bit)
if (!token)
return -EINVAL;
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
- buffer->input[1] = token->value;
- dell_smbios_send_request(1, 0);
- ret = buffer->output[0];
- dell_smbios_release_buffer();
+ dell_set_arguments(token->location, token->value, 0, 0);
+ ret = dell_send_request(CLASS_TOKEN_WRITE, SELECT_TOKEN_STD);
- return dell_smbios_error(ret);
+ return ret;
}
static int kbd_get_token_bit(u8 bit)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
int ret;
int val;
@@ -1380,15 +1310,12 @@ static int kbd_get_token_bit(u8 bit)
if (!token)
return -EINVAL;
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
- dell_smbios_send_request(0, 0);
- ret = buffer->output[0];
+ dell_set_arguments(token->location, 0, 0, 0);
+ ret = dell_send_request(CLASS_TOKEN_READ, SELECT_TOKEN_STD);
val = buffer->output[1];
- dell_smbios_release_buffer();
if (ret)
- return dell_smbios_error(ret);
+ return ret;
return (val == token->value);
}
@@ -2102,7 +2029,6 @@ static struct notifier_block dell_laptop_notifier = {
int dell_micmute_led_set(int state)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
if (state == 0)
@@ -2115,11 +2041,8 @@ int dell_micmute_led_set(int state)
if (!token)
return -ENODEV;
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
- buffer->input[1] = token->value;
- dell_smbios_send_request(1, 0);
- dell_smbios_release_buffer();
+ dell_set_arguments(token->location, token->value, 0, 0);
+ dell_send_request(CLASS_TOKEN_WRITE, SELECT_TOKEN_STD);
return state;
}
@@ -2127,7 +2050,6 @@ EXPORT_SYMBOL_GPL(dell_micmute_led_set);
static int __init dell_init(void)
{
- struct calling_interface_buffer *buffer;
struct calling_interface_token *token;
int max_intensity = 0;
int ret;
@@ -2158,6 +2080,10 @@ static int __init dell_init(void)
goto fail_rfkill;
}
+ buffer = kzalloc(sizeof(struct calling_interface_buffer), GFP_KERNEL);
+ if (!buffer)
+ goto fail_buffer;
+
if (quirks && quirks->touchpad_led)
touchpad_led_init(&platform_device->dev);
@@ -2175,12 +2101,10 @@ static int __init dell_init(void)
token = dell_smbios_find_token(BRIGHTNESS_TOKEN);
if (token) {
- buffer = dell_smbios_get_buffer();
- buffer->input[0] = token->location;
- dell_smbios_send_request(0, 2);
- if (buffer->output[0] == 0)
+ dell_set_arguments(token->location, 0, 0, 0);
+ ret = dell_send_request(CLASS_TOKEN_READ, SELECT_TOKEN_AC);
+ if (ret)
max_intensity = buffer->output[3];
- dell_smbios_release_buffer();
}
if (max_intensity) {
@@ -2214,6 +2138,8 @@ static int __init dell_init(void)
fail_get_brightness:
backlight_device_unregister(dell_backlight_device);
fail_backlight:
+ kfree(buffer);
+fail_buffer:
dell_cleanup_rfkill();
fail_rfkill:
platform_device_del(platform_device);
@@ -2233,6 +2159,7 @@ static void __exit dell_exit(void)
touchpad_led_exit();
kbd_led_exit();
backlight_device_unregister(dell_backlight_device);
+ kfree(buffer);
dell_cleanup_rfkill();
if (platform_device) {
platform_device_unregister(platform_device);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 21:24:09 +0100