| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Panasonic HotKey and LCD brightness control driver |
| * (C) 2004 Hiroshi Miura <miura@da-cha.org> |
| * (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/ |
| * (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp> |
| * (C) 2004 David Bronaugh <dbronaugh> |
| * (C) 2006-2008 Harald Welte <laforge@gnumonks.org> |
| * |
| * derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte |
| * |
| *--------------------------------------------------------------------------- |
| * |
| * ChangeLog: |
| * Aug.18, 2020 Kenneth Chan <kenneth.t.chan@gmail.com> |
| * -v0.98 add platform devices for firmware brightness registers |
| * add support for battery charging threshold (eco mode) |
| * resolve hotkey double trigger |
| * add write support to mute |
| * fix sticky_key init bug |
| * fix naming of platform files for consistency with other |
| * modules |
| * split MODULE_AUTHOR() by one author per macro call |
| * replace ACPI prints with pr_*() macros |
| * -v0.97 add support for cdpower hardware switch |
| * -v0.96 merge Lucina's enhancement |
| * Jan.13, 2009 Martin Lucina <mato@kotelna.sk> |
| * - add support for optical driver power in |
| * Y and W series |
| * |
| * Sep.23, 2008 Harald Welte <laforge@gnumonks.org> |
| * -v0.95 rename driver from drivers/acpi/pcc_acpi.c to |
| * drivers/misc/panasonic-laptop.c |
| * |
| * Jul.04, 2008 Harald Welte <laforge@gnumonks.org> |
| * -v0.94 replace /proc interface with device attributes |
| * support {set,get}keycode on th input device |
| * |
| * Jun.27, 2008 Harald Welte <laforge@gnumonks.org> |
| * -v0.92 merge with 2.6.26-rc6 input API changes |
| * remove broken <= 2.6.15 kernel support |
| * resolve all compiler warnings |
| * various coding style fixes (checkpatch.pl) |
| * add support for backlight api |
| * major code restructuring |
| * |
| * Dac.28, 2007 Harald Welte <laforge@gnumonks.org> |
| * -v0.91 merge with 2.6.24-rc6 ACPI changes |
| * |
| * Nov.04, 2006 Hiroshi Miura <miura@da-cha.org> |
| * -v0.9 remove warning about section reference. |
| * remove acpi_os_free |
| * add /proc/acpi/pcc/brightness interface for HAL access |
| * merge dbronaugh's enhancement |
| * Aug.17, 2004 David Bronaugh (dbronaugh) |
| * - Added screen brightness setting interface |
| * Thanks to FreeBSD crew (acpi_panasonic.c) |
| * for the ideas I needed to accomplish it |
| * |
| * May.29, 2006 Hiroshi Miura <miura@da-cha.org> |
| * -v0.8.4 follow to change keyinput structure |
| * thanks Fabian Yamaguchi <fabs@cs.tu-berlin.de>, |
| * Jacob Bower <jacob.bower@ic.ac.uk> and |
| * Hiroshi Yokota for providing solutions. |
| * |
| * Oct.02, 2004 Hiroshi Miura <miura@da-cha.org> |
| * -v0.8.2 merge code of YOKOTA Hiroshi |
| * <yokota@netlab.is.tsukuba.ac.jp>. |
| * Add sticky key mode interface. |
| * Refactoring acpi_pcc_generate_keyinput(). |
| * |
| * Sep.15, 2004 Hiroshi Miura <miura@da-cha.org> |
| * -v0.8 Generate key input event on input subsystem. |
| * This is based on yet another driver written by |
| * Ryuta Nakanishi. |
| * |
| * Sep.10, 2004 Hiroshi Miura <miura@da-cha.org> |
| * -v0.7 Change proc interface functions using seq_file |
| * facility as same as other ACPI drivers. |
| * |
| * Aug.28, 2004 Hiroshi Miura <miura@da-cha.org> |
| * -v0.6.4 Fix a silly error with status checking |
| * |
| * Aug.25, 2004 Hiroshi Miura <miura@da-cha.org> |
| * -v0.6.3 replace read_acpi_int by standard function |
| * acpi_evaluate_integer |
| * some clean up and make smart copyright notice. |
| * fix return value of pcc_acpi_get_key() |
| * fix checking return value of acpi_bus_register_driver() |
| * |
| * Aug.22, 2004 David Bronaugh <dbronaugh@linuxboxen.org> |
| * -v0.6.2 Add check on ACPI data (num_sifr) |
| * Coding style cleanups, better error messages/handling |
| * Fixed an off-by-one error in memory allocation |
| * |
| * Aug.21, 2004 David Bronaugh <dbronaugh@linuxboxen.org> |
| * -v0.6.1 Fix a silly error with status checking |
| * |
| * Aug.20, 2004 David Bronaugh <dbronaugh@linuxboxen.org> |
| * - v0.6 Correct brightness controls to reflect reality |
| * based on information gleaned by Hiroshi Miura |
| * and discussions with Hiroshi Miura |
| * |
| * Aug.10, 2004 Hiroshi Miura <miura@da-cha.org> |
| * - v0.5 support LCD brightness control |
| * based on the disclosed information by MEI. |
| * |
| * Jul.25, 2004 Hiroshi Miura <miura@da-cha.org> |
| * - v0.4 first post version |
| * add function to retrive SIFR |
| * |
| * Jul.24, 2004 Hiroshi Miura <miura@da-cha.org> |
| * - v0.3 get proper status of hotkey |
| * |
| * Jul.22, 2004 Hiroshi Miura <miura@da-cha.org> |
| * - v0.2 add HotKey handler |
| * |
| * Jul.17, 2004 Hiroshi Miura <miura@da-cha.org> |
| * - v0.1 start from toshiba_acpi driver written by John Belmonte |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/backlight.h> |
| #include <linux/ctype.h> |
| #include <linux/seq_file.h> |
| #include <linux/uaccess.h> |
| #include <linux/slab.h> |
| #include <linux/acpi.h> |
| #include <linux/input.h> |
| #include <linux/input/sparse-keymap.h> |
| #include <linux/platform_device.h> |
| |
| |
| MODULE_AUTHOR("Hiroshi Miura <miura@da-cha.org>"); |
| MODULE_AUTHOR("David Bronaugh <dbronaugh@linuxboxen.org>"); |
| MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>"); |
| MODULE_AUTHOR("Martin Lucina <mato@kotelna.sk>"); |
| MODULE_AUTHOR("Kenneth Chan <kenneth.t.chan@gmail.com>"); |
| MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops"); |
| MODULE_LICENSE("GPL"); |
| |
| #define LOGPREFIX "pcc_acpi: " |
| |
| /* Define ACPI PATHs */ |
| /* Lets note hotkeys */ |
| #define METHOD_HKEY_QUERY "HINF" |
| #define METHOD_HKEY_SQTY "SQTY" |
| #define METHOD_HKEY_SINF "SINF" |
| #define METHOD_HKEY_SSET "SSET" |
| #define METHOD_ECWR "\\_SB.ECWR" |
| #define HKEY_NOTIFY 0x80 |
| #define ECO_MODE_OFF 0x00 |
| #define ECO_MODE_ON 0x80 |
| |
| #define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support" |
| #define ACPI_PCC_DEVICE_NAME "Hotkey" |
| #define ACPI_PCC_CLASS "pcc" |
| |
| #define ACPI_PCC_INPUT_PHYS "panasonic/hkey0" |
| |
| /* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent |
| ECO_MODEs: 0x03 = off, 0x83 = on |
| */ |
| enum SINF_BITS { SINF_NUM_BATTERIES = 0, |
| SINF_LCD_TYPE, |
| SINF_AC_MAX_BRIGHT, |
| SINF_AC_MIN_BRIGHT, |
| SINF_AC_CUR_BRIGHT, |
| SINF_DC_MAX_BRIGHT, |
| SINF_DC_MIN_BRIGHT, |
| SINF_DC_CUR_BRIGHT, |
| SINF_MUTE, |
| SINF_RESERVED, |
| SINF_ECO_MODE = 0x0A, |
| SINF_CUR_BRIGHT = 0x0D, |
| SINF_STICKY_KEY = 0x80, |
| }; |
| /* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */ |
| |
| static int acpi_pcc_hotkey_add(struct acpi_device *device); |
| static int acpi_pcc_hotkey_remove(struct acpi_device *device); |
| static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event); |
| |
| static const struct acpi_device_id pcc_device_ids[] = { |
| { "MAT0012", 0}, |
| { "MAT0013", 0}, |
| { "MAT0018", 0}, |
| { "MAT0019", 0}, |
| { "", 0}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, pcc_device_ids); |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int acpi_pcc_hotkey_resume(struct device *dev); |
| #endif |
| static SIMPLE_DEV_PM_OPS(acpi_pcc_hotkey_pm, NULL, acpi_pcc_hotkey_resume); |
| |
| static struct acpi_driver acpi_pcc_driver = { |
| .name = ACPI_PCC_DRIVER_NAME, |
| .class = ACPI_PCC_CLASS, |
| .ids = pcc_device_ids, |
| .ops = { |
| .add = acpi_pcc_hotkey_add, |
| .remove = acpi_pcc_hotkey_remove, |
| .notify = acpi_pcc_hotkey_notify, |
| }, |
| .drv.pm = &acpi_pcc_hotkey_pm, |
| }; |
| |
| static const struct key_entry panasonic_keymap[] = { |
| { KE_KEY, 0, { KEY_RESERVED } }, |
| { KE_KEY, 1, { KEY_BRIGHTNESSDOWN } }, |
| { KE_KEY, 2, { KEY_BRIGHTNESSUP } }, |
| { KE_KEY, 3, { KEY_DISPLAYTOGGLE } }, |
| { KE_KEY, 4, { KEY_MUTE } }, |
| { KE_KEY, 5, { KEY_VOLUMEDOWN } }, |
| { KE_KEY, 6, { KEY_VOLUMEUP } }, |
| { KE_KEY, 7, { KEY_SLEEP } }, |
| { KE_KEY, 8, { KEY_PROG1 } }, /* Change CPU boost */ |
| { KE_KEY, 9, { KEY_BATTERY } }, |
| { KE_KEY, 10, { KEY_SUSPEND } }, |
| { KE_END, 0 } |
| }; |
| |
| struct pcc_acpi { |
| acpi_handle handle; |
| unsigned long num_sifr; |
| int sticky_key; |
| int eco_mode; |
| int mute; |
| int ac_brightness; |
| int dc_brightness; |
| int current_brightness; |
| u32 *sinf; |
| struct acpi_device *device; |
| struct input_dev *input_dev; |
| struct backlight_device *backlight; |
| struct platform_device *platform; |
| }; |
| |
| /* method access functions */ |
| static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) |
| { |
| union acpi_object in_objs[] = { |
| { .integer.type = ACPI_TYPE_INTEGER, |
| .integer.value = func, }, |
| { .integer.type = ACPI_TYPE_INTEGER, |
| .integer.value = val, }, |
| }; |
| struct acpi_object_list params = { |
| .count = ARRAY_SIZE(in_objs), |
| .pointer = in_objs, |
| }; |
| acpi_status status = AE_OK; |
| |
| status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, |
| ¶ms, NULL); |
| |
| return (status == AE_OK) ? 0 : -EIO; |
| } |
| |
| static inline int acpi_pcc_get_sqty(struct acpi_device *device) |
| { |
| unsigned long long s; |
| acpi_status status; |
| |
| status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, |
| NULL, &s); |
| if (ACPI_SUCCESS(status)) |
| return s; |
| else { |
| pr_err("evaluation error HKEY.SQTY\n"); |
| return -EINVAL; |
| } |
| } |
| |
| static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc) |
| { |
| acpi_status status; |
| struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; |
| union acpi_object *hkey = NULL; |
| int i; |
| |
| status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL, |
| &buffer); |
| if (ACPI_FAILURE(status)) { |
| pr_err("evaluation error HKEY.SINF\n"); |
| return 0; |
| } |
| |
| hkey = buffer.pointer; |
| if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { |
| pr_err("Invalid HKEY.SINF\n"); |
| status = AE_ERROR; |
| goto end; |
| } |
| |
| if (pcc->num_sifr < hkey->package.count) { |
| pr_err("SQTY reports bad SINF length\n"); |
| status = AE_ERROR; |
| goto end; |
| } |
| |
| for (i = 0; i < hkey->package.count; i++) { |
| union acpi_object *element = &(hkey->package.elements[i]); |
| if (likely(element->type == ACPI_TYPE_INTEGER)) { |
| pcc->sinf[i] = element->integer.value; |
| } else |
| pr_err("Invalid HKEY.SINF data\n"); |
| } |
| pcc->sinf[hkey->package.count] = -1; |
| |
| end: |
| kfree(buffer.pointer); |
| return status == AE_OK; |
| } |
| |
| /* backlight API interface functions */ |
| |
| /* This driver currently treats AC and DC brightness identical, |
| * since we don't need to invent an interface to the core ACPI |
| * logic to receive events in case a power supply is plugged in |
| * or removed */ |
| |
| static int bl_get(struct backlight_device *bd) |
| { |
| struct pcc_acpi *pcc = bl_get_data(bd); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return pcc->sinf[SINF_AC_CUR_BRIGHT]; |
| } |
| |
| static int bl_set_status(struct backlight_device *bd) |
| { |
| struct pcc_acpi *pcc = bl_get_data(bd); |
| int bright = bd->props.brightness; |
| int rc; |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) |
| bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; |
| |
| if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) |
| bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; |
| |
| if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || |
| bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) |
| return -EINVAL; |
| |
| rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); |
| if (rc < 0) |
| return rc; |
| |
| return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); |
| } |
| |
| static const struct backlight_ops pcc_backlight_ops = { |
| .get_brightness = bl_get, |
| .update_status = bl_set_status, |
| }; |
| |
| |
| /* returns ACPI_SUCCESS if methods to control optical drive are present */ |
| |
| static acpi_status check_optd_present(void) |
| { |
| acpi_status status = AE_OK; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, "\\_SB.STAT", &handle); |
| if (ACPI_FAILURE(status)) |
| goto out; |
| status = acpi_get_handle(NULL, "\\_SB.FBAY", &handle); |
| if (ACPI_FAILURE(status)) |
| goto out; |
| status = acpi_get_handle(NULL, "\\_SB.CDDI", &handle); |
| if (ACPI_FAILURE(status)) |
| goto out; |
| |
| out: |
| return status; |
| } |
| |
| /* get optical driver power state */ |
| |
| static int get_optd_power_state(void) |
| { |
| acpi_status status; |
| unsigned long long state; |
| int result; |
| |
| status = acpi_evaluate_integer(NULL, "\\_SB.STAT", NULL, &state); |
| if (ACPI_FAILURE(status)) { |
| pr_err("evaluation error _SB.STAT\n"); |
| result = -EIO; |
| goto out; |
| } |
| switch (state) { |
| case 0: /* power off */ |
| result = 0; |
| break; |
| case 0x0f: /* power on */ |
| result = 1; |
| break; |
| default: |
| result = -EIO; |
| break; |
| } |
| |
| out: |
| return result; |
| } |
| |
| /* set optical drive power state */ |
| |
| static int set_optd_power_state(int new_state) |
| { |
| int result; |
| acpi_status status; |
| |
| result = get_optd_power_state(); |
| if (result < 0) |
| goto out; |
| if (new_state == result) |
| goto out; |
| |
| switch (new_state) { |
| case 0: /* power off */ |
| /* Call CDDR instead, since they both call the same method |
| * while CDDI takes 1 arg and we are not quite sure what it is. |
| */ |
| status = acpi_evaluate_object(NULL, "\\_SB.CDDR", NULL, NULL); |
| if (ACPI_FAILURE(status)) { |
| pr_err("evaluation error _SB.CDDR\n"); |
| result = -EIO; |
| } |
| break; |
| case 1: /* power on */ |
| status = acpi_evaluate_object(NULL, "\\_SB.FBAY", NULL, NULL); |
| if (ACPI_FAILURE(status)) { |
| pr_err("evaluation error _SB.FBAY\n"); |
| result = -EIO; |
| } |
| break; |
| default: |
| result = -EINVAL; |
| break; |
| } |
| |
| out: |
| return result; |
| } |
| |
| |
| /* sysfs user interface functions */ |
| |
| static ssize_t numbatt_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); |
| } |
| |
| static ssize_t lcdtype_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); |
| } |
| |
| static ssize_t mute_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); |
| } |
| |
| static ssize_t mute_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, val; |
| |
| err = kstrtoint(buf, 0, &val); |
| if (err) |
| return err; |
| if (val == 0 || val == 1) { |
| acpi_pcc_write_sset(pcc, SINF_MUTE, val); |
| pcc->mute = val; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t sticky_key_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sticky_key); |
| } |
| |
| static ssize_t sticky_key_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, val; |
| |
| err = kstrtoint(buf, 0, &val); |
| if (err) |
| return err; |
| if (val == 0 || val == 1) { |
| acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); |
| pcc->sticky_key = val; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t eco_mode_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int result; |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| switch (pcc->sinf[SINF_ECO_MODE]) { |
| case (ECO_MODE_OFF + 3): |
| result = 0; |
| break; |
| case (ECO_MODE_ON + 3): |
| result = 1; |
| break; |
| default: |
| result = -EIO; |
| break; |
| } |
| return snprintf(buf, PAGE_SIZE, "%u\n", result); |
| } |
| |
| static ssize_t eco_mode_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, state; |
| |
| union acpi_object param[2]; |
| struct acpi_object_list input; |
| acpi_status status; |
| |
| param[0].type = ACPI_TYPE_INTEGER; |
| param[0].integer.value = 0x15; |
| param[1].type = ACPI_TYPE_INTEGER; |
| input.count = 2; |
| input.pointer = param; |
| |
| err = kstrtoint(buf, 0, &state); |
| if (err) |
| return err; |
| |
| switch (state) { |
| case 0: |
| param[1].integer.value = ECO_MODE_OFF; |
| pcc->sinf[SINF_ECO_MODE] = 0; |
| pcc->eco_mode = 0; |
| break; |
| case 1: |
| param[1].integer.value = ECO_MODE_ON; |
| pcc->sinf[SINF_ECO_MODE] = 1; |
| pcc->eco_mode = 1; |
| break; |
| default: |
| /* nothing to do */ |
| return count; |
| } |
| |
| status = acpi_evaluate_object(NULL, METHOD_ECWR, |
| &input, NULL); |
| if (ACPI_FAILURE(status)) { |
| pr_err("%s evaluation failed\n", METHOD_ECWR); |
| return -EINVAL; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t ac_brightness_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_AC_CUR_BRIGHT]); |
| } |
| |
| static ssize_t ac_brightness_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, val; |
| |
| err = kstrtoint(buf, 0, &val); |
| if (err) |
| return err; |
| if (val >= 0 && val <= 255) { |
| acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, val); |
| pcc->ac_brightness = val; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t dc_brightness_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_DC_CUR_BRIGHT]); |
| } |
| |
| static ssize_t dc_brightness_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, val; |
| |
| err = kstrtoint(buf, 0, &val); |
| if (err) |
| return err; |
| if (val >= 0 && val <= 255) { |
| acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, val); |
| pcc->dc_brightness = val; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t current_brightness_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) |
| return -EIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_CUR_BRIGHT]); |
| } |
| |
| static ssize_t current_brightness_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi = to_acpi_device(dev); |
| struct pcc_acpi *pcc = acpi_driver_data(acpi); |
| int err, val; |
| |
| err = kstrtoint(buf, 0, &val); |
| if (err) |
| return err; |
| |
| if (val >= 0 && val <= 255) { |
| err = acpi_pcc_write_sset(pcc, SINF_CUR_BRIGHT, val); |
| pcc->current_brightness = val; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t cdpower_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", get_optd_power_state()); |
| } |
| |
| static ssize_t cdpower_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int err, val; |
| |
| err = kstrtoint(buf, 10, &val); |
| if (err) |
| return err; |
| set_optd_power_state(val); |
| return count; |
| } |
| |
| static DEVICE_ATTR_RO(numbatt); |
| static DEVICE_ATTR_RO(lcdtype); |
| static DEVICE_ATTR_RW(mute); |
| static DEVICE_ATTR_RW(sticky_key); |
| static DEVICE_ATTR_RW(eco_mode); |
| static DEVICE_ATTR_RW(ac_brightness); |
| static DEVICE_ATTR_RW(dc_brightness); |
| static DEVICE_ATTR_RW(current_brightness); |
| static DEVICE_ATTR_RW(cdpower); |
| |
| static struct attribute *pcc_sysfs_entries[] = { |
| &dev_attr_numbatt.attr, |
| &dev_attr_lcdtype.attr, |
| &dev_attr_mute.attr, |
| &dev_attr_sticky_key.attr, |
| &dev_attr_eco_mode.attr, |
| &dev_attr_ac_brightness.attr, |
| &dev_attr_dc_brightness.attr, |
| &dev_attr_current_brightness.attr, |
| &dev_attr_cdpower.attr, |
| NULL, |
| }; |
| |
| static const struct attribute_group pcc_attr_group = { |
| .name = NULL, /* put in device directory */ |
| .attrs = pcc_sysfs_entries, |
| }; |
| |
| |
| /* hotkey input device driver */ |
| |
| static int sleep_keydown_seen; |
| static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) |
| { |
| struct input_dev *hotk_input_dev = pcc->input_dev; |
| int rc; |
| unsigned long long result; |
| |
| rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, |
| NULL, &result); |
| if (ACPI_FAILURE(rc)) { |
| pr_err("error getting hotkey status\n"); |
| return; |
| } |
| |
| /* hack: some firmware sends no key down for sleep / hibernate */ |
| if ((result & 0xf) == 0x7 || (result & 0xf) == 0xa) { |
| if (result & 0x80) |
| sleep_keydown_seen = 1; |
| if (!sleep_keydown_seen) |
| sparse_keymap_report_event(hotk_input_dev, |
| result & 0xf, 0x80, false); |
| } |
| |
| if ((result & 0xf) == 0x7 || (result & 0xf) == 0x9 || (result & 0xf) == 0xa) { |
| if (!sparse_keymap_report_event(hotk_input_dev, |
| result & 0xf, result & 0x80, false)) |
| pr_err("Unknown hotkey event: 0x%04llx\n", result); |
| } |
| } |
| |
| static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event) |
| { |
| struct pcc_acpi *pcc = acpi_driver_data(device); |
| |
| switch (event) { |
| case HKEY_NOTIFY: |
| acpi_pcc_generate_keyinput(pcc); |
| break; |
| default: |
| /* nothing to do */ |
| break; |
| } |
| } |
| |
| static void pcc_optd_notify(acpi_handle handle, u32 event, void *data) |
| { |
| if (event != ACPI_NOTIFY_EJECT_REQUEST) |
| return; |
| |
| set_optd_power_state(0); |
| } |
| |
| static int pcc_register_optd_notifier(struct pcc_acpi *pcc, char *node) |
| { |
| acpi_status status; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, node, &handle); |
| |
| if (ACPI_SUCCESS(status)) { |
| status = acpi_install_notify_handler(handle, |
| ACPI_SYSTEM_NOTIFY, |
| pcc_optd_notify, pcc); |
| if (ACPI_FAILURE(status)) |
| pr_err("Failed to register notify on %s\n", node); |
| } else |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static void pcc_unregister_optd_notifier(struct pcc_acpi *pcc, char *node) |
| { |
| acpi_status status = AE_OK; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, node, &handle); |
| |
| if (ACPI_SUCCESS(status)) { |
| status = acpi_remove_notify_handler(handle, |
| ACPI_SYSTEM_NOTIFY, |
| pcc_optd_notify); |
| if (ACPI_FAILURE(status)) |
| pr_err("Error removing optd notify handler %s\n", |
| node); |
| } |
| } |
| |
| static int acpi_pcc_init_input(struct pcc_acpi *pcc) |
| { |
| struct input_dev *input_dev; |
| int error; |
| |
| input_dev = input_allocate_device(); |
| if (!input_dev) |
| return -ENOMEM; |
| |
| input_dev->name = ACPI_PCC_DRIVER_NAME; |
| input_dev->phys = ACPI_PCC_INPUT_PHYS; |
| input_dev->id.bustype = BUS_HOST; |
| input_dev->id.vendor = 0x0001; |
| input_dev->id.product = 0x0001; |
| input_dev->id.version = 0x0100; |
| |
| error = sparse_keymap_setup(input_dev, panasonic_keymap, NULL); |
| if (error) { |
| pr_err("Unable to setup input device keymap\n"); |
| goto err_free_dev; |
| } |
| |
| error = input_register_device(input_dev); |
| if (error) { |
| pr_err("Unable to register input device\n"); |
| goto err_free_dev; |
| } |
| |
| pcc->input_dev = input_dev; |
| return 0; |
| |
| err_free_dev: |
| input_free_device(input_dev); |
| return error; |
| } |
| |
| /* kernel module interface */ |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int acpi_pcc_hotkey_resume(struct device *dev) |
| { |
| struct pcc_acpi *pcc; |
| |
| if (!dev) |
| return -EINVAL; |
| |
| pcc = acpi_driver_data(to_acpi_device(dev)); |
| if (!pcc) |
| return -EINVAL; |
| |
| acpi_pcc_write_sset(pcc, SINF_MUTE, pcc->mute); |
| acpi_pcc_write_sset(pcc, SINF_ECO_MODE, pcc->eco_mode); |
| acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_key); |
| acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, pcc->ac_brightness); |
| acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, pcc->dc_brightness); |
| acpi_pcc_write_sset(pcc, SINF_CUR_BRIGHT, pcc->current_brightness); |
| |
| return 0; |
| } |
| #endif |
| |
| static int acpi_pcc_hotkey_add(struct acpi_device *device) |
| { |
| struct backlight_properties props; |
| struct pcc_acpi *pcc; |
| int num_sifr, result; |
| |
| if (!device) |
| return -EINVAL; |
| |
| num_sifr = acpi_pcc_get_sqty(device); |
| |
| if (num_sifr < 0 || num_sifr > 255) { |
| pr_err("num_sifr out of range"); |
| return -ENODEV; |
| } |
| |
| pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); |
| if (!pcc) { |
| pr_err("Couldn't allocate mem for pcc"); |
| return -ENOMEM; |
| } |
| |
| pcc->sinf = kcalloc(num_sifr + 1, sizeof(u32), GFP_KERNEL); |
| if (!pcc->sinf) { |
| result = -ENOMEM; |
| goto out_hotkey; |
| } |
| |
| pcc->device = device; |
| pcc->handle = device->handle; |
| pcc->num_sifr = num_sifr; |
| device->driver_data = pcc; |
| strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); |
| strcpy(acpi_device_class(device), ACPI_PCC_CLASS); |
| |
| result = acpi_pcc_init_input(pcc); |
| if (result) { |
| pr_err("Error installing keyinput handler\n"); |
| goto out_sinf; |
| } |
| |
| if (!acpi_pcc_retrieve_biosdata(pcc)) { |
| result = -EIO; |
| pr_err("Couldn't retrieve BIOS data\n"); |
| goto out_input; |
| } |
| /* initialize backlight */ |
| memset(&props, 0, sizeof(struct backlight_properties)); |
| props.type = BACKLIGHT_PLATFORM; |
| props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT]; |
| pcc->backlight = backlight_device_register("panasonic", NULL, pcc, |
| &pcc_backlight_ops, &props); |
| if (IS_ERR(pcc->backlight)) { |
| result = PTR_ERR(pcc->backlight); |
| goto out_input; |
| } |
| |
| /* read the initial brightness setting from the hardware */ |
| pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; |
| |
| /* Reset initial sticky key mode since the hardware register state is not consistent */ |
| acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, 0); |
| pcc->sticky_key = 0; |
| |
| pcc->eco_mode = pcc->sinf[SINF_ECO_MODE]; |
| pcc->mute = pcc->sinf[SINF_MUTE]; |
| pcc->ac_brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; |
| pcc->dc_brightness = pcc->sinf[SINF_DC_CUR_BRIGHT]; |
| pcc->current_brightness = pcc->sinf[SINF_CUR_BRIGHT]; |
| |
| /* add sysfs attributes */ |
| result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); |
| if (result) |
| goto out_backlight; |
| |
| /* optical drive initialization */ |
| if (ACPI_SUCCESS(check_optd_present())) { |
| pcc->platform = platform_device_register_simple("panasonic", |
| -1, NULL, 0); |
| if (IS_ERR(pcc->platform)) { |
| result = PTR_ERR(pcc->platform); |
| goto out_backlight; |
| } |
| result = device_create_file(&pcc->platform->dev, |
| &dev_attr_cdpower); |
| pcc_register_optd_notifier(pcc, "\\_SB.PCI0.EHCI.ERHB.OPTD"); |
| if (result) |
| goto out_platform; |
| } else { |
| pcc->platform = NULL; |
| } |
| |
| return 0; |
| |
| out_platform: |
| platform_device_unregister(pcc->platform); |
| out_backlight: |
| backlight_device_unregister(pcc->backlight); |
| out_input: |
| input_unregister_device(pcc->input_dev); |
| out_sinf: |
| kfree(pcc->sinf); |
| out_hotkey: |
| kfree(pcc); |
| |
| return result; |
| } |
| |
| static int acpi_pcc_hotkey_remove(struct acpi_device *device) |
| { |
| struct pcc_acpi *pcc = acpi_driver_data(device); |
| |
| if (!device || !pcc) |
| return -EINVAL; |
| |
| if (pcc->platform) { |
| device_remove_file(&pcc->platform->dev, &dev_attr_cdpower); |
| platform_device_unregister(pcc->platform); |
| } |
| pcc_unregister_optd_notifier(pcc, "\\_SB.PCI0.EHCI.ERHB.OPTD"); |
| |
| sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); |
| |
| backlight_device_unregister(pcc->backlight); |
| |
| input_unregister_device(pcc->input_dev); |
| |
| kfree(pcc->sinf); |
| kfree(pcc); |
| |
| return 0; |
| } |
| |
| module_acpi_driver(acpi_pcc_driver); |