#include <linux/fb.h>
#include <linux/vmalloc.h>
#include <linux/backlight.h>
+#include <linux/lcd.h>
+
+#include <linux/leds.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/completion.h>
+#include <linux/uaccess.h>
#define PICOLCD_NAME "PicoLCD (graphic)"
#define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */
#define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Framebuffer
*
* The PicoLCD use a Topway LCD module of 256x64 pixel
.bits_per_pixel = 1,
.grayscale = 1,
};
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
/* Input device
*
struct picolcd_data {
struct hid_device *hdev;
#ifdef CONFIG_DEBUG_FS
+ struct dentry *debug_reset;
+ struct dentry *debug_eeprom;
+ struct dentry *debug_flash;
+ struct mutex mutex_flash;
int addr_sz;
#endif
u8 version[2];
+ unsigned short opmode_delay;
/* input stuff */
u8 pressed_keys[2];
struct input_dev *input_keys;
struct input_dev *input_cir;
unsigned short keycode[PICOLCD_KEYS];
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Framebuffer stuff */
u8 fb_update_rate;
u8 fb_bpp;
u8 *fb_bitmap; /* framebuffer */
struct fb_info *fb_info;
struct fb_deferred_io fb_defio;
-#endif /* CONFIG_FB */
-#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+#endif /* CONFIG_HID_PICOLCD_FB */
+#ifdef CONFIG_HID_PICOLCD_LCD
+ struct lcd_device *lcd;
+ u8 lcd_contrast;
+#endif /* CONFIG_HID_PICOLCD_LCD */
+#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
struct backlight_device *backlight;
u8 lcd_brightness;
u8 lcd_power;
-#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
+#ifdef CONFIG_HID_PICOLCD_LEDS
+ /* LED stuff */
+ u8 led_state;
+ struct led_classdev *led[8];
+#endif /* CONFIG_HID_PICOLCD_LEDS */
/* Housekeeping stuff */
spinlock_t lock;
return work;
}
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
/* Send a given tile to PicoLCD */
static int picolcd_fb_send_tile(struct hid_device *hdev, int chip, int tile)
{
{
return 0;
}
-static void picolcd_exit_framebuffer(struct picolcd_data *data)
+static inline void picolcd_exit_framebuffer(struct picolcd_data *data)
{
}
#define picolcd_fbinfo(d) NULL
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
-#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
/*
* backlight class device
*/
return picolcd_set_brightness(data->backlight);
}
+#ifdef CONFIG_PM
+static void picolcd_suspend_backlight(struct picolcd_data *data)
+{
+ int bl_power = data->lcd_power;
+ if (!data->backlight)
+ return;
+
+ data->backlight->props.power = FB_BLANK_POWERDOWN;
+ picolcd_set_brightness(data->backlight);
+ data->lcd_power = data->backlight->props.power = bl_power;
+}
+#endif /* CONFIG_PM */
#else
static inline int picolcd_init_backlight(struct picolcd_data *data,
struct hid_report *report)
{
return 0;
}
-#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+static inline void picolcd_suspend_backlight(struct picolcd_data *data)
+{
+}
+#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
+
+#ifdef CONFIG_HID_PICOLCD_LCD
+/*
+ * lcd class device
+ */
+static int picolcd_get_contrast(struct lcd_device *ldev)
+{
+ struct picolcd_data *data = lcd_get_data(ldev);
+ return data->lcd_contrast;
+}
+
+static int picolcd_set_contrast(struct lcd_device *ldev, int contrast)
+{
+ struct picolcd_data *data = lcd_get_data(ldev);
+ struct hid_report *report = picolcd_out_report(REPORT_CONTRAST, data->hdev);
+ unsigned long flags;
+
+ if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
+ return -ENODEV;
+
+ data->lcd_contrast = contrast & 0x0ff;
+ spin_lock_irqsave(&data->lock, flags);
+ hid_set_field(report->field[0], 0, data->lcd_contrast);
+ usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
+ spin_unlock_irqrestore(&data->lock, flags);
+ return 0;
+}
+
+static int picolcd_check_lcd_fb(struct lcd_device *ldev, struct fb_info *fb)
+{
+ return fb && fb == picolcd_fbinfo((struct picolcd_data *)lcd_get_data(ldev));
+}
+
+static struct lcd_ops picolcd_lcdops = {
+ .get_contrast = picolcd_get_contrast,
+ .set_contrast = picolcd_set_contrast,
+ .check_fb = picolcd_check_lcd_fb,
+};
+
+static int picolcd_init_lcd(struct picolcd_data *data, struct hid_report *report)
+{
+ struct device *dev = &data->hdev->dev;
+ struct lcd_device *ldev;
+
+ if (!report)
+ return -ENODEV;
+ if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
+ report->field[0]->report_size != 8) {
+ dev_err(dev, "unsupported CONTRAST report");
+ return -EINVAL;
+ }
+
+ ldev = lcd_device_register(dev_name(dev), dev, data, &picolcd_lcdops);
+ if (IS_ERR(ldev)) {
+ dev_err(dev, "failed to register LCD\n");
+ return PTR_ERR(ldev);
+ }
+ ldev->props.max_contrast = 0x0ff;
+ data->lcd_contrast = 0xe5;
+ data->lcd = ldev;
+ picolcd_set_contrast(ldev, 0xe5);
+ return 0;
+}
+
+static void picolcd_exit_lcd(struct picolcd_data *data)
+{
+ struct lcd_device *ldev = data->lcd;
+
+ data->lcd = NULL;
+ if (ldev)
+ lcd_device_unregister(ldev);
+}
+
+static inline int picolcd_resume_lcd(struct picolcd_data *data)
+{
+ if (!data->lcd)
+ return 0;
+ return picolcd_set_contrast(data->lcd, data->lcd_contrast);
+}
+#else
+static inline int picolcd_init_lcd(struct picolcd_data *data,
+ struct hid_report *report)
+{
+ return 0;
+}
+static inline void picolcd_exit_lcd(struct picolcd_data *data)
+{
+}
+static inline int picolcd_resume_lcd(struct picolcd_data *data)
+{
+ return 0;
+}
+#endif /* CONFIG_HID_PICOLCD_LCD */
+
+#ifdef CONFIG_HID_PICOLCD_LEDS
+/**
+ * LED class device
+ */
+static void picolcd_leds_set(struct picolcd_data *data)
+{
+ struct hid_report *report;
+ unsigned long flags;
+
+ if (!data->led[0])
+ return;
+ report = picolcd_out_report(REPORT_LED_STATE, data->hdev);
+ if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
+ return;
+
+ spin_lock_irqsave(&data->lock, flags);
+ hid_set_field(report->field[0], 0, data->led_state);
+ usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
+ spin_unlock_irqrestore(&data->lock, flags);
+}
+
+static void picolcd_led_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct device *dev;
+ struct hid_device *hdev;
+ struct picolcd_data *data;
+ int i, state = 0;
+
+ dev = led_cdev->dev->parent;
+ hdev = container_of(dev, struct hid_device, dev);
+ data = hid_get_drvdata(hdev);
+ for (i = 0; i < 8; i++) {
+ if (led_cdev != data->led[i])
+ continue;
+ state = (data->led_state >> i) & 1;
+ if (value == LED_OFF && state) {
+ data->led_state &= ~(1 << i);
+ picolcd_leds_set(data);
+ } else if (value != LED_OFF && !state) {
+ data->led_state |= 1 << i;
+ picolcd_leds_set(data);
+ }
+ break;
+ }
+}
+
+static enum led_brightness picolcd_led_get_brightness(struct led_classdev *led_cdev)
+{
+ struct device *dev;
+ struct hid_device *hdev;
+ struct picolcd_data *data;
+ int i, value = 0;
+
+ dev = led_cdev->dev->parent;
+ hdev = container_of(dev, struct hid_device, dev);
+ data = hid_get_drvdata(hdev);
+ for (i = 0; i < 8; i++)
+ if (led_cdev == data->led[i]) {
+ value = (data->led_state >> i) & 1;
+ break;
+ }
+ return value ? LED_FULL : LED_OFF;
+}
+
+static int picolcd_init_leds(struct picolcd_data *data, struct hid_report *report)
+{
+ struct device *dev = &data->hdev->dev;
+ struct led_classdev *led;
+ size_t name_sz = strlen(dev_name(dev)) + 8;
+ char *name;
+ int i, ret = 0;
+
+ if (!report)
+ return -ENODEV;
+ if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
+ report->field[0]->report_size != 8) {
+ dev_err(dev, "unsupported LED_STATE report");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < 8; i++) {
+ led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
+ if (!led) {
+ dev_err(dev, "can't allocate memory for LED %d\n", i);
+ ret = -ENOMEM;
+ goto err;
+ }
+ name = (void *)(&led[1]);
+ snprintf(name, name_sz, "%s::GPO%d", dev_name(dev), i);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = picolcd_led_get_brightness;
+ led->brightness_set = picolcd_led_set_brightness;
+
+ data->led[i] = led;
+ ret = led_classdev_register(dev, data->led[i]);
+ if (ret) {
+ data->led[i] = NULL;
+ kfree(led);
+ dev_err(dev, "can't register LED %d\n", i);
+ goto err;
+ }
+ }
+ return 0;
+err:
+ for (i = 0; i < 8; i++)
+ if (data->led[i]) {
+ led = data->led[i];
+ data->led[i] = NULL;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ return ret;
+}
+
+static void picolcd_exit_leds(struct picolcd_data *data)
+{
+ struct led_classdev *led;
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ led = data->led[i];
+ data->led[i] = NULL;
+ if (!led)
+ continue;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+}
+
+#else
+static inline int picolcd_init_leds(struct picolcd_data *data,
+ struct hid_report *report)
+{
+ return 0;
+}
+static inline void picolcd_exit_leds(struct picolcd_data *data)
+{
+}
+static inline int picolcd_leds_set(struct picolcd_data *data)
+{
+ return 0;
+}
+#endif /* CONFIG_HID_PICOLCD_LEDS */
/*
* input class device
}
if (verinfo->raw_size == 2) {
+ data->version[0] = verinfo->raw_data[1];
+ data->version[1] = verinfo->raw_data[0];
if (data->status & PICOLCD_BOOTLOADER) {
dev_info(&hdev->dev, "PicoLCD, bootloader version %d.%d\n",
- verinfo->raw_data[0], verinfo->raw_data[1]);
- data->version[0] = verinfo->raw_data[0];
- data->version[1] = verinfo->raw_data[1];
+ verinfo->raw_data[1], verinfo->raw_data[0]);
} else {
dev_info(&hdev->dev, "PicoLCD, firmware version %d.%d\n",
verinfo->raw_data[1], verinfo->raw_data[0]);
- data->version[0] = verinfo->raw_data[1];
- data->version[1] = verinfo->raw_data[0];
}
} else {
dev_err(&hdev->dev, "confused, got unexpected version response from PicoLCD\n");
if (error)
return error;
+ picolcd_resume_lcd(data);
picolcd_resume_backlight(data);
-#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
+#ifdef CONFIG_HID_PICOLCD_FB
if (data->fb_info)
schedule_delayed_work(&data->fb_info->deferred_work, 0);
-#endif /* CONFIG_FB */
+#endif /* CONFIG_HID_PICOLCD_FB */
+ picolcd_leds_set(data);
return 0;
}
struct picolcd_data *data = dev_get_drvdata(dev);
struct hid_report *report = NULL;
size_t cnt = count;
- int timeout = 5000;
- unsigned u;
+ int timeout = data->opmode_delay;
unsigned long flags;
if (cnt >= 3 && strncmp("lcd", buf, 3) == 0) {
if (!report)
return -EINVAL;
- while (cnt > 0 && (*buf == ' ' || *buf == '\t')) {
- buf++;
- cnt--;
- }
while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r'))
cnt--;
- if (cnt > 0) {
- if (sscanf(buf, "%u", &u) != 1)
- return -EINVAL;
- if (u > 30000)
- return -EINVAL;
- else
- timeout = u;
- }
+ if (cnt != 0)
+ return -EINVAL;
spin_lock_irqsave(&data->lock, flags);
hid_set_field(report->field[0], 0, timeout & 0xff);
static DEVICE_ATTR(operation_mode, 0644, picolcd_operation_mode_show,
picolcd_operation_mode_store);
+/*
+ * The "operation_mode_delay" sysfs attribute
+ */
+static ssize_t picolcd_operation_mode_delay_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct picolcd_data *data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%hu\n", data->opmode_delay);
+}
+
+static ssize_t picolcd_operation_mode_delay_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct picolcd_data *data = dev_get_drvdata(dev);
+ unsigned u;
+ if (sscanf(buf, "%u", &u) != 1)
+ return -EINVAL;
+ if (u > 30000)
+ return -EINVAL;
+ else
+ data->opmode_delay = u;
+ return count;
+}
+
+static DEVICE_ATTR(operation_mode_delay, 0644, picolcd_operation_mode_delay_show,
+ picolcd_operation_mode_delay_store);
+
#ifdef CONFIG_DEBUG_FS
/*
+ * The "reset" file
+ */
+static int picolcd_debug_reset_show(struct seq_file *f, void *p)
+{
+ if (picolcd_fbinfo((struct picolcd_data *)f->private))
+ seq_printf(f, "all fb\n");
+ else
+ seq_printf(f, "all\n");
+ return 0;
+}
+
+static int picolcd_debug_reset_open(struct inode *inode, struct file *f)
+{
+ return single_open(f, picolcd_debug_reset_show, inode->i_private);
+}
+
+static ssize_t picolcd_debug_reset_write(struct file *f, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct picolcd_data *data = ((struct seq_file *)f->private_data)->private;
+ char buf[32];
+ size_t cnt = min(count, sizeof(buf)-1);
+ if (copy_from_user(buf, user_buf, cnt))
+ return -EFAULT;
+
+ while (cnt > 0 && (buf[cnt-1] == ' ' || buf[cnt-1] == '\n'))
+ cnt--;
+ buf[cnt] = '\0';
+ if (strcmp(buf, "all") == 0) {
+ picolcd_reset(data->hdev);
+ picolcd_fb_reset(data, 1);
+ } else if (strcmp(buf, "fb") == 0) {
+ picolcd_fb_reset(data, 1);
+ } else {
+ return -EINVAL;
+ }
+ return count;
+}
+
+static const struct file_operations picolcd_debug_reset_fops = {
+ .owner = THIS_MODULE,
+ .open = picolcd_debug_reset_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = picolcd_debug_reset_write,
+ .release = single_release,
+};
+
+/*
+ * The "eeprom" file
+ */
+static int picolcd_debug_eeprom_open(struct inode *i, struct file *f)
+{
+ f->private_data = i->i_private;
+ return 0;
+}
+
+static ssize_t picolcd_debug_eeprom_read(struct file *f, char __user *u,
+ size_t s, loff_t *off)
+{
+ struct picolcd_data *data = f->private_data;
+ struct picolcd_pending *resp;
+ u8 raw_data[3];
+ ssize_t ret = -EIO;
+
+ if (s == 0)
+ return -EINVAL;
+ if (*off > 0x0ff)
+ return 0;
+
+ /* prepare buffer with info about what we want to read (addr & len) */
+ raw_data[0] = *off & 0xff;
+ raw_data[1] = (*off >> 8) && 0xff;
+ raw_data[2] = s < 20 ? s : 20;
+ if (*off + raw_data[2] > 0xff)
+ raw_data[2] = 0x100 - *off;
+ resp = picolcd_send_and_wait(data->hdev, REPORT_EE_READ, raw_data,
+ sizeof(raw_data));
+ if (!resp)
+ return -EIO;
+
+ if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
+ /* successful read :) */
+ ret = resp->raw_data[2];
+ if (ret > s)
+ ret = s;
+ if (copy_to_user(u, resp->raw_data+3, ret))
+ ret = -EFAULT;
+ else
+ *off += ret;
+ } /* anything else is some kind of IO error */
+
+ kfree(resp);
+ return ret;
+}
+
+static ssize_t picolcd_debug_eeprom_write(struct file *f, const char __user *u,
+ size_t s, loff_t *off)
+{
+ struct picolcd_data *data = f->private_data;
+ struct picolcd_pending *resp;
+ ssize_t ret = -EIO;
+ u8 raw_data[23];
+
+ if (s == 0)
+ return -EINVAL;
+ if (*off > 0x0ff)
+ return -ENOSPC;
+
+ memset(raw_data, 0, sizeof(raw_data));
+ raw_data[0] = *off & 0xff;
+ raw_data[1] = (*off >> 8) && 0xff;
+ raw_data[2] = s < 20 ? s : 20;
+ if (*off + raw_data[2] > 0xff)
+ raw_data[2] = 0x100 - *off;
+
+ if (copy_from_user(raw_data+3, u, raw_data[2]))
+ return -EFAULT;
+ resp = picolcd_send_and_wait(data->hdev, REPORT_EE_WRITE, raw_data,
+ sizeof(raw_data));
+
+ if (!resp)
+ return -EIO;
+
+ if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
+ /* check if written data matches */
+ if (memcmp(raw_data, resp->raw_data, 3+raw_data[2]) == 0) {
+ *off += raw_data[2];
+ ret = raw_data[2];
+ }
+ }
+ kfree(resp);
+ return ret;
+}
+
+/*
+ * Notes:
+ * - read/write happens in chunks of at most 20 bytes, it's up to userspace
+ * to loop in order to get more data.
+ * - on write errors on otherwise correct write request the bytes
+ * that should have been written are in undefined state.
+ */
+static const struct file_operations picolcd_debug_eeprom_fops = {
+ .owner = THIS_MODULE,
+ .open = picolcd_debug_eeprom_open,
+ .read = picolcd_debug_eeprom_read,
+ .write = picolcd_debug_eeprom_write,
+ .llseek = generic_file_llseek,
+};
+
+/*
+ * The "flash" file
+ */
+static int picolcd_debug_flash_open(struct inode *i, struct file *f)
+{
+ f->private_data = i->i_private;
+ return 0;
+}
+
+/* record a flash address to buf (bounds check to be done by caller) */
+static int _picolcd_flash_setaddr(struct picolcd_data *data, u8 *buf, long off)
+{
+ buf[0] = off & 0xff;
+ buf[1] = (off >> 8) & 0xff;
+ if (data->addr_sz == 3)
+ buf[2] = (off >> 16) & 0xff;
+ return data->addr_sz == 2 ? 2 : 3;
+}
+
+/* read a given size of data (bounds check to be done by caller) */
+static ssize_t _picolcd_flash_read(struct picolcd_data *data, int report_id,
+ char __user *u, size_t s, loff_t *off)
+{
+ struct picolcd_pending *resp;
+ u8 raw_data[4];
+ ssize_t ret = 0;
+ int len_off, err = -EIO;
+
+ while (s > 0) {
+ err = -EIO;
+ len_off = _picolcd_flash_setaddr(data, raw_data, *off);
+ raw_data[len_off] = s > 32 ? 32 : s;
+ resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off+1);
+ if (!resp || !resp->in_report)
+ goto skip;
+ if (resp->in_report->id == REPORT_MEMORY ||
+ resp->in_report->id == REPORT_BL_READ_MEMORY) {
+ if (memcmp(raw_data, resp->raw_data, len_off+1) != 0)
+ goto skip;
+ if (copy_to_user(u+ret, resp->raw_data+len_off+1, raw_data[len_off])) {
+ err = -EFAULT;
+ goto skip;
+ }
+ *off += raw_data[len_off];
+ s -= raw_data[len_off];
+ ret += raw_data[len_off];
+ err = 0;
+ }
+skip:
+ kfree(resp);
+ if (err)
+ return ret > 0 ? ret : err;
+ }
+ return ret;
+}
+
+static ssize_t picolcd_debug_flash_read(struct file *f, char __user *u,
+ size_t s, loff_t *off)
+{
+ struct picolcd_data *data = f->private_data;
+
+ if (s == 0)
+ return -EINVAL;
+ if (*off > 0x05fff)
+ return 0;
+ if (*off + s > 0x05fff)
+ s = 0x06000 - *off;
+
+ if (data->status & PICOLCD_BOOTLOADER)
+ return _picolcd_flash_read(data, REPORT_BL_READ_MEMORY, u, s, off);
+ else
+ return _picolcd_flash_read(data, REPORT_READ_MEMORY, u, s, off);
+}
+
+/* erase block aligned to 64bytes boundary */
+static ssize_t _picolcd_flash_erase64(struct picolcd_data *data, int report_id,
+ loff_t *off)
+{
+ struct picolcd_pending *resp;
+ u8 raw_data[3];
+ int len_off;
+ ssize_t ret = -EIO;
+
+ if (*off & 0x3f)
+ return -EINVAL;
+
+ len_off = _picolcd_flash_setaddr(data, raw_data, *off);
+ resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off);
+ if (!resp || !resp->in_report)
+ goto skip;
+ if (resp->in_report->id == REPORT_MEMORY ||
+ resp->in_report->id == REPORT_BL_ERASE_MEMORY) {
+ if (memcmp(raw_data, resp->raw_data, len_off) != 0)
+ goto skip;
+ ret = 0;
+ }
+skip:
+ kfree(resp);
+ return ret;
+}
+
+/* write a given size of data (bounds check to be done by caller) */
+static ssize_t _picolcd_flash_write(struct picolcd_data *data, int report_id,
+ const char __user *u, size_t s, loff_t *off)
+{
+ struct picolcd_pending *resp;
+ u8 raw_data[36];
+ ssize_t ret = 0;
+ int len_off, err = -EIO;
+
+ while (s > 0) {
+ err = -EIO;
+ len_off = _picolcd_flash_setaddr(data, raw_data, *off);
+ raw_data[len_off] = s > 32 ? 32 : s;
+ if (copy_from_user(raw_data+len_off+1, u, raw_data[len_off])) {
+ err = -EFAULT;
+ break;
+ }
+ resp = picolcd_send_and_wait(data->hdev, report_id, raw_data,
+ len_off+1+raw_data[len_off]);
+ if (!resp || !resp->in_report)
+ goto skip;
+ if (resp->in_report->id == REPORT_MEMORY ||
+ resp->in_report->id == REPORT_BL_WRITE_MEMORY) {
+ if (memcmp(raw_data, resp->raw_data, len_off+1+raw_data[len_off]) != 0)
+ goto skip;
+ *off += raw_data[len_off];
+ s -= raw_data[len_off];
+ ret += raw_data[len_off];
+ err = 0;
+ }
+skip:
+ kfree(resp);
+ if (err)
+ break;
+ }
+ return ret > 0 ? ret : err;
+}
+
+static ssize_t picolcd_debug_flash_write(struct file *f, const char __user *u,
+ size_t s, loff_t *off)
+{
+ struct picolcd_data *data = f->private_data;
+ ssize_t err, ret = 0;
+ int report_erase, report_write;
+
+ if (s == 0)
+ return -EINVAL;
+ if (*off > 0x5fff)
+ return -ENOSPC;
+ if (s & 0x3f)
+ return -EINVAL;
+ if (*off & 0x3f)
+ return -EINVAL;
+
+ if (data->status & PICOLCD_BOOTLOADER) {
+ report_erase = REPORT_BL_ERASE_MEMORY;
+ report_write = REPORT_BL_WRITE_MEMORY;
+ } else {
+ report_erase = REPORT_ERASE_MEMORY;
+ report_write = REPORT_WRITE_MEMORY;
+ }
+ mutex_lock(&data->mutex_flash);
+ while (s > 0) {
+ err = _picolcd_flash_erase64(data, report_erase, off);
+ if (err)
+ break;
+ err = _picolcd_flash_write(data, report_write, u, 64, off);
+ if (err < 0)
+ break;
+ ret += err;
+ *off += err;
+ s -= err;
+ if (err != 64)
+ break;
+ }
+ mutex_unlock(&data->mutex_flash);
+ return ret > 0 ? ret : err;
+}
+
+/*
+ * Notes:
+ * - concurrent writing is prevented by mutex and all writes must be
+ * n*64 bytes and 64-byte aligned, each write being preceeded by an
+ * ERASE which erases a 64byte block.
+ * If less than requested was written or an error is returned for an
+ * otherwise correct write request the next 64-byte block which should
+ * have been written is in undefined state (mostly: original, erased,
+ * (half-)written with write error)
+ * - reading can happend without special restriction
+ */
+static const struct file_operations picolcd_debug_flash_fops = {
+ .owner = THIS_MODULE,
+ .open = picolcd_debug_flash_open,
+ .read = picolcd_debug_flash_read,
+ .write = picolcd_debug_flash_write,
+ .llseek = generic_file_llseek,
+};
+
+
+/*
* Helper code for HID report level dumping/debugging
*/
static const char *error_codes[] = {
wake_up_interruptible(&hdev->debug_wait);
kfree(buff);
}
+
+static void picolcd_init_devfs(struct picolcd_data *data,
+ struct hid_report *eeprom_r, struct hid_report *eeprom_w,
+ struct hid_report *flash_r, struct hid_report *flash_w,
+ struct hid_report *reset)
+{
+ struct hid_device *hdev = data->hdev;
+
+ mutex_init(&data->mutex_flash);
+
+ /* reset */
+ if (reset)
+ data->debug_reset = debugfs_create_file("reset", 0600,
+ hdev->debug_dir, data, &picolcd_debug_reset_fops);
+
+ /* eeprom */
+ if (eeprom_r || eeprom_w)
+ data->debug_eeprom = debugfs_create_file("eeprom",
+ (eeprom_w ? S_IWUSR : 0) | (eeprom_r ? S_IRUSR : 0),
+ hdev->debug_dir, data, &picolcd_debug_eeprom_fops);
+
+ /* flash */
+ if (flash_r && flash_r->maxfield == 1 && flash_r->field[0]->report_size == 8)
+ data->addr_sz = flash_r->field[0]->report_count - 1;
+ else
+ data->addr_sz = -1;
+ if (data->addr_sz == 2 || data->addr_sz == 3) {
+ data->debug_flash = debugfs_create_file("flash",
+ (flash_w ? S_IWUSR : 0) | (flash_r ? S_IRUSR : 0),
+ hdev->debug_dir, data, &picolcd_debug_flash_fops);
+ } else if (flash_r || flash_w)
+ dev_warn(&hdev->dev, "Unexpected FLASH access reports, "
+ "please submit rdesc for review\n");
+}
+
+static void picolcd_exit_devfs(struct picolcd_data *data)
+{
+ struct dentry *dent;
+
+ dent = data->debug_reset;
+ data->debug_reset = NULL;
+ if (dent)
+ debugfs_remove(dent);
+ dent = data->debug_eeprom;
+ data->debug_eeprom = NULL;
+ if (dent)
+ debugfs_remove(dent);
+ dent = data->debug_flash;
+ data->debug_flash = NULL;
+ if (dent)
+ debugfs_remove(dent);
+ mutex_destroy(&data->mutex_flash);
+}
#else
-#define picolcd_debug_raw_event(data, hdev, report, raw_data, size)
-#endif
+static inline void picolcd_debug_raw_event(struct picolcd_data *data,
+ struct hid_device *hdev, struct hid_report *report,
+ u8 *raw_data, int size)
+{
+}
+static inline void picolcd_init_devfs(struct picolcd_data *data,
+ struct hid_report *eeprom_r, struct hid_report *eeprom_w,
+ struct hid_report *flash_r, struct hid_report *flash_w,
+ struct hid_report *reset)
+{
+}
+static inline void picolcd_exit_devfs(struct picolcd_data *data)
+{
+}
+#endif /* CONFIG_DEBUG_FS */
/*
* Handle raw report as sent by device
return 1;
}
+#ifdef CONFIG_PM
+static int picolcd_suspend(struct hid_device *hdev, pm_message_t message)
+{
+ if (message.event & PM_EVENT_AUTO)
+ return 0;
+
+ picolcd_suspend_backlight(hid_get_drvdata(hdev));
+ dbg_hid(PICOLCD_NAME " device ready for suspend\n");
+ return 0;
+}
+
+static int picolcd_resume(struct hid_device *hdev)
+{
+ int ret;
+ ret = picolcd_resume_backlight(hid_get_drvdata(hdev));
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret);
+ return 0;
+}
+
+static int picolcd_reset_resume(struct hid_device *hdev)
+{
+ int ret;
+ ret = picolcd_reset(hdev);
+ if (ret)
+ dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret);
+ ret = picolcd_fb_reset(hid_get_drvdata(hdev), 0);
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret);
+ ret = picolcd_resume_lcd(hid_get_drvdata(hdev));
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring lcd failed: %d\n", ret);
+ ret = picolcd_resume_backlight(hid_get_drvdata(hdev));
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret);
+ picolcd_leds_set(hid_get_drvdata(hdev));
+ return 0;
+}
+#endif
+
/* initialize keypad input device */
static int picolcd_init_keys(struct picolcd_data *data,
struct hid_report *report)
static int picolcd_probe_lcd(struct hid_device *hdev, struct picolcd_data *data)
{
- struct hid_report *report;
int error;
error = picolcd_check_version(hdev);
if (error)
goto err;
+ /* Setup lcd class device */
+ error = picolcd_init_lcd(data, picolcd_out_report(REPORT_CONTRAST, hdev));
+ if (error)
+ goto err;
+
/* Setup backlight class device */
error = picolcd_init_backlight(data, picolcd_out_report(REPORT_BRIGHTNESS, hdev));
if (error)
goto err;
-#ifdef CONFIG_DEBUG_FS
- report = picolcd_out_report(REPORT_READ_MEMORY, hdev);
- if (report && report->maxfield == 1 && report->field[0]->report_size == 8)
- data->addr_sz = report->field[0]->report_count - 1;
- else
- data->addr_sz = -1;
-#endif
+ /* Setup the LED class devices */
+ error = picolcd_init_leds(data, picolcd_out_report(REPORT_LED_STATE, hdev));
+ if (error)
+ goto err;
+
+ picolcd_init_devfs(data, picolcd_out_report(REPORT_EE_READ, hdev),
+ picolcd_out_report(REPORT_EE_WRITE, hdev),
+ picolcd_out_report(REPORT_READ_MEMORY, hdev),
+ picolcd_out_report(REPORT_WRITE_MEMORY, hdev),
+ picolcd_out_report(REPORT_RESET, hdev));
return 0;
err:
+ picolcd_exit_leds(data);
picolcd_exit_backlight(data);
+ picolcd_exit_lcd(data);
picolcd_exit_framebuffer(data);
picolcd_exit_cir(data);
picolcd_exit_keys(data);
static int picolcd_probe_bootloader(struct hid_device *hdev, struct picolcd_data *data)
{
- struct hid_report *report;
int error;
error = picolcd_check_version(hdev);
"please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
dev_name(&hdev->dev));
-#ifdef CONFIG_DEBUG_FS
- report = picolcd_out_report(REPORT_BL_READ_MEMORY, hdev);
- if (report && report->maxfield == 1 && report->field[0]->report_size == 8)
- data->addr_sz = report->field[0]->report_count - 1;
- else
- data->addr_sz = -1;
-#endif
+ picolcd_init_devfs(data, NULL, NULL,
+ picolcd_out_report(REPORT_BL_READ_MEMORY, hdev),
+ picolcd_out_report(REPORT_BL_WRITE_MEMORY, hdev), NULL);
return 0;
}
spin_lock_init(&data->lock);
mutex_init(&data->mutex);
data->hdev = hdev;
+ data->opmode_delay = 5000;
if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER)
data->status |= PICOLCD_BOOTLOADER;
hid_set_drvdata(hdev, data);
goto err_cleanup_hid_hw;
}
- error = device_create_file(&hdev->dev, &dev_attr_operation_mode);
+ error = device_create_file(&hdev->dev, &dev_attr_operation_mode_delay);
if (error) {
dev_err(&hdev->dev, "failed to create sysfs attributes\n");
goto err_cleanup_hid_ll;
}
+ error = device_create_file(&hdev->dev, &dev_attr_operation_mode);
+ if (error) {
+ dev_err(&hdev->dev, "failed to create sysfs attributes\n");
+ goto err_cleanup_sysfs1;
+ }
+
if (data->status & PICOLCD_BOOTLOADER)
error = picolcd_probe_bootloader(hdev, data);
else
error = picolcd_probe_lcd(hdev, data);
if (error)
- goto err_cleanup_sysfs;
+ goto err_cleanup_sysfs2;
dbg_hid(PICOLCD_NAME " activated and initialized\n");
return 0;
-err_cleanup_sysfs:
+err_cleanup_sysfs2:
device_remove_file(&hdev->dev, &dev_attr_operation_mode);
+err_cleanup_sysfs1:
+ device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
err_cleanup_hid_ll:
hdev->ll_driver->close(hdev);
err_cleanup_hid_hw:
data->status |= PICOLCD_FAILED;
spin_unlock_irqrestore(&data->lock, flags);
+ picolcd_exit_devfs(data);
device_remove_file(&hdev->dev, &dev_attr_operation_mode);
+ device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
hdev->ll_driver->close(hdev);
hid_hw_stop(hdev);
hid_set_drvdata(hdev, NULL);
complete(&data->pending->ready);
spin_unlock_irqrestore(&data->lock, flags);
+ /* Cleanup LED */
+ picolcd_exit_leds(data);
/* Clean up the framebuffer */
picolcd_exit_backlight(data);
+ picolcd_exit_lcd(data);
picolcd_exit_framebuffer(data);
/* Cleanup input */
picolcd_exit_cir(data);
.probe = picolcd_probe,
.remove = picolcd_remove,
.raw_event = picolcd_raw_event,
+#ifdef CONFIG_PM
+ .suspend = picolcd_suspend,
+ .resume = picolcd_resume,
+ .reset_resume = picolcd_reset_resume,
+#endif
};
static int __init picolcd_init(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff