diff options
Diffstat (limited to 'target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c')
-rw-r--r-- | target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c | 338 |
1 files changed, 186 insertions, 152 deletions
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c b/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c index eb4e46d..883159a 100644 --- a/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c +++ b/target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c @@ -97,40 +97,42 @@ enum jbt_register { }; -enum jbt_state { - JBT_STATE_DEEP_STANDBY, - JBT_STATE_SLEEP, - JBT_STATE_NORMAL, - JBT_STATE_QVGA_NORMAL, +enum jbt_resolution { + JBT_RESOLUTION_VGA, + JBT_RESOLUTION_QVGA, }; -static const char *jbt_state_names[] = { - [JBT_STATE_DEEP_STANDBY] = "deep-standby", - [JBT_STATE_SLEEP] = "sleep", - [JBT_STATE_NORMAL] = "normal", - [JBT_STATE_QVGA_NORMAL] = "qvga-normal", +enum jbt_power_mode { + JBT_POWER_MODE_DEEP_STANDBY, + JBT_POWER_MODE_SLEEP, + JBT_POWER_MODE_NORMAL, +}; + +static const char *jbt_power_mode_names[] = { + [JBT_POWER_MODE_DEEP_STANDBY] = "deep-standby", + [JBT_POWER_MODE_SLEEP] = "sleep", + [JBT_POWER_MODE_NORMAL] = "normal", +}; + +static const char *jbt_resolution_names[] = { + [JBT_RESOLUTION_VGA] = "vga", + [JBT_RESOLUTION_QVGA] = "qvga", }; struct jbt_info { - enum jbt_state state, normal_state; + enum jbt_resolution resolution; + enum jbt_power_mode power_mode; struct spi_device *spi_dev; struct mutex lock; /* protects tx_buf and reg_cache */ struct notifier_block fb_notif; u16 tx_buf[8]; u16 reg_cache[0xEE]; - struct timespec last_sleep; + unsigned long last_sleep; }; #define JBT_COMMAND 0x000 #define JBT_DATA 0x100 -static inline unsigned int timespec_sub_ms(struct timespec lhs, - struct timespec rhs) -{ - struct timespec ts = timespec_sub(lhs, rhs); - return (ts.tv_sec * MSEC_PER_SEC) + (ts.tv_nsec / NSEC_PER_MSEC); -} - static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg) { int rc; @@ -141,7 +143,7 @@ static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg) if (rc == 0) jbt->reg_cache[reg] = 0; else - printk(KERN_ERR"jbt_reg_write_nodata spi_write ret %d\n", + dev_err(&jbt->spi_dev->dev, "jbt_reg_write_nodata spi_write ret %d\n", rc); return rc; @@ -159,7 +161,7 @@ static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data) if (rc == 0) jbt->reg_cache[reg] = data; else - printk(KERN_ERR"jbt_reg_write spi_write ret %d\n", rc); + dev_err(&jbt->spi_dev->dev, "jbt_reg_write spi_write ret %d\n", rc); return rc; } @@ -177,7 +179,7 @@ static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data) if (rc == 0) jbt->reg_cache[reg] = data; else - printk(KERN_ERR"jbt_reg_write16 spi_write ret %d\n", rc); + dev_err(&jbt->spi_dev->dev, "jbt_reg_write16 spi_write ret %d\n", rc); return rc; } @@ -187,7 +189,7 @@ static int jbt_init_regs(struct jbt_info *jbt) int rc; dev_dbg(&jbt->spi_dev->dev, "entering %cVGA mode\n", - jbt->normal_state == JBT_STATE_QVGA_NORMAL ? 'Q' : ' '); + jbt->resolution == JBT_RESOLUTION_QVGA ? 'Q' : ' '); rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE1, 0x01); rc |= jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE2, 0x00); @@ -221,7 +223,7 @@ static int jbt_init_regs(struct jbt_info *jbt) rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_INCLINATION, 0x00); rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00); - if (jbt->normal_state != JBT_STATE_QVGA_NORMAL) { + if (jbt->resolution != JBT_RESOLUTION_QVGA) { rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_VGA, 0x1f0); rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL, 0x02); rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV, 0x0804); @@ -276,12 +278,10 @@ static int sleep_to_normal(struct jbt_info *jbt) int rc; /* Make sure we are 120 ms after SLEEP_OUT */ - unsigned int sleep_time = timespec_sub_ms(current_kernel_time(), - jbt->last_sleep); - if (sleep_time < 120) - mdelay(120 - sleep_time); + if (time_before(jiffies, jbt->last_sleep)) + mdelay(jiffies_to_msecs(jbt->last_sleep - jiffies)); - if (jbt->normal_state == JBT_STATE_NORMAL) { + if (jbt->resolution == JBT_RESOLUTION_VGA) { /* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x80); @@ -306,7 +306,7 @@ static int sleep_to_normal(struct jbt_info *jbt) /* Sleep mode off */ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT); - jbt->last_sleep = current_kernel_time(); + jbt->last_sleep = jiffies + msecs_to_jiffies(120); /* Allow the booster and display controller to restart stably */ mdelay(5); @@ -319,15 +319,13 @@ static int normal_to_sleep(struct jbt_info *jbt) int rc; /* Make sure we are 120 ms after SLEEP_OUT */ - unsigned int sleep_time = timespec_sub_ms(current_kernel_time(), - jbt->last_sleep); - if (sleep_time < 120) - mdelay(120 - sleep_time); + if (time_before(jiffies, jbt->last_sleep)) + mdelay(jiffies_to_msecs(jbt->last_sleep - jiffies)); rc = jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF); rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0x8002); rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_IN); - jbt->last_sleep = current_kernel_time(); + jbt->last_sleep = jiffies + msecs_to_jiffies(120); /* Allow the internal circuits to stop automatically */ mdelay(5); @@ -341,40 +339,26 @@ static int sleep_to_standby(struct jbt_info *jbt) } /* frontend function */ -int jbt6k74_enter_state(struct jbt_info *jbt, enum jbt_state new_state) +int jbt6k74_enter_power_mode(struct jbt_info *jbt, enum jbt_power_mode new_mode) { int rc = -EINVAL; -/* dev_dbg(&jbt->spi_dev->dev, "entering (old_state=%s, new_state=%s)\n", - jbt_state_names[jbt->state], - jbt_state_names[new_state]);*/ - -/* printk("entering (old_state=%s, new_state=%s)\n", - jbt_state_names[jbt->state], - jbt_state_names[new_state]);*/ + dev_dbg(&jbt->spi_dev->dev, "entering (old_state=%s, new_state=%s)\n", + jbt_power_mode_names[jbt->power_mode], + jbt_power_mode_names[new_mode]); mutex_lock(&jbt->lock); - if (new_state == JBT_STATE_NORMAL || - new_state == JBT_STATE_QVGA_NORMAL) - jbt->normal_state = new_state; - - switch (jbt->state) { - case JBT_STATE_DEEP_STANDBY: - switch (new_state) { - case JBT_STATE_DEEP_STANDBY: + switch (jbt->power_mode) { + case JBT_POWER_MODE_DEEP_STANDBY: + switch (new_mode) { + case JBT_POWER_MODE_DEEP_STANDBY: rc = 0; break; - case JBT_STATE_SLEEP: + case JBT_POWER_MODE_SLEEP: rc = standby_to_sleep(jbt); break; - case JBT_STATE_NORMAL: - /* first transition into sleep */ - rc = standby_to_sleep(jbt); - /* then transition into normal */ - rc |= sleep_to_normal(jbt); - break; - case JBT_STATE_QVGA_NORMAL: + case JBT_POWER_MODE_NORMAL: /* first transition into sleep */ rc = standby_to_sleep(jbt); /* then transition into normal */ @@ -382,107 +366,109 @@ int jbt6k74_enter_state(struct jbt_info *jbt, enum jbt_state new_state) break; } break; - case JBT_STATE_SLEEP: - switch (new_state) { - case JBT_STATE_SLEEP: + case JBT_POWER_MODE_SLEEP: + switch (new_mode) { + case JBT_POWER_MODE_SLEEP: rc = 0; break; - case JBT_STATE_DEEP_STANDBY: + case JBT_POWER_MODE_DEEP_STANDBY: rc = sleep_to_standby(jbt); break; - case JBT_STATE_NORMAL: - case JBT_STATE_QVGA_NORMAL: + case JBT_POWER_MODE_NORMAL: rc = sleep_to_normal(jbt); break; } break; - case JBT_STATE_NORMAL: - switch (new_state) { - case JBT_STATE_NORMAL: + case JBT_POWER_MODE_NORMAL: + switch (new_mode) { + case JBT_POWER_MODE_NORMAL: rc = 0; break; - case JBT_STATE_DEEP_STANDBY: + case JBT_POWER_MODE_DEEP_STANDBY: /* first transition into sleep */ rc = normal_to_sleep(jbt); /* then transition into deep standby */ rc |= sleep_to_standby(jbt); break; - case JBT_STATE_SLEEP: + case JBT_POWER_MODE_SLEEP: rc = normal_to_sleep(jbt); break; - case JBT_STATE_QVGA_NORMAL: - /* first transition into sleep */ - rc = normal_to_sleep(jbt); - /* second transition into deep standby */ - rc |= sleep_to_standby(jbt); - /* third transition into sleep */ - rc |= standby_to_sleep(jbt); - /* fourth transition into normal */ - rc |= sleep_to_normal(jbt); - break; } - break; - case JBT_STATE_QVGA_NORMAL: - switch (new_state) { - case JBT_STATE_QVGA_NORMAL: - rc = 0; - break; - case JBT_STATE_DEEP_STANDBY: - /* first transition into sleep */ - rc = normal_to_sleep(jbt); - /* then transition into deep standby */ - rc |= sleep_to_standby(jbt); - break; - case JBT_STATE_SLEEP: - rc = normal_to_sleep(jbt); - break; - case JBT_STATE_NORMAL: - /* first transition into sleep */ - rc = normal_to_sleep(jbt); - /* second transition into deep standby */ - rc |= sleep_to_standby(jbt); - /* third transition into sleep */ - rc |= standby_to_sleep(jbt); - /* fourth transition into normal */ - rc |= sleep_to_normal(jbt); - break; - } - break; } if (rc == 0) - jbt->state = new_state; + jbt->power_mode = new_mode; else dev_err(&jbt->spi_dev->dev, "Failed enter state '%s')\n", - jbt_state_names[new_state]); + jbt_power_mode_names[new_mode]); + + mutex_unlock(&jbt->lock); + + return rc; +} +EXPORT_SYMBOL_GPL(jbt6k74_enter_power_mode); + +int jbt6k74_set_resolution(struct jbt_info *jbt, enum jbt_resolution new_resolution) { + int rc = 0; + enum jbt_resolution old_resolution; + + mutex_lock(&jbt->lock); + + if (jbt->resolution == new_resolution) + return 0; + + if (new_resolution != JBT_RESOLUTION_VGA && + new_resolution != JBT_RESOLUTION_QVGA) + return -EINVAL; + + old_resolution = jbt->resolution; + jbt->resolution = new_resolution; + + if (jbt->power_mode == JBT_POWER_MODE_NORMAL) { + + /* first transition into sleep */ + rc = normal_to_sleep(jbt); + /* second transition into deep standby */ +/* rc |= sleep_to_standby(jbt);*/ + /* third transition into sleep */ +/* rc |= standby_to_sleep(jbt);*/ + /* fourth transition into normal */ + rc |= sleep_to_normal(jbt); + + if (rc) { + jbt->resolution = old_resolution; + dev_err(&jbt->spi_dev->dev, "Failed to set resolution '%s')\n", + jbt_resolution_names[new_resolution]); + } + } mutex_unlock(&jbt->lock); return rc; } -EXPORT_SYMBOL_GPL(jbt6k74_enter_state); +EXPORT_SYMBOL_GPL(jbt6k74_set_resolution); -static ssize_t state_read(struct device *dev, struct device_attribute *attr, +static ssize_t power_mode_read(struct device *dev, struct device_attribute *attr, char *buf) { struct jbt_info *jbt = dev_get_drvdata(dev); - if (jbt->state >= ARRAY_SIZE(jbt_state_names)) + if (jbt->power_mode >= ARRAY_SIZE(jbt_power_mode_names)) return -EIO; - return sprintf(buf, "%s\n", jbt_state_names[jbt->state]); + return sprintf(buf, "%s\n", jbt_power_mode_names[jbt->power_mode]); } -static ssize_t state_write(struct device *dev, struct device_attribute *attr, +static ssize_t power_mode_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct jbt_info *jbt = dev_get_drvdata(dev); int i, rc; - for (i = 0; i < ARRAY_SIZE(jbt_state_names); i++) { - if (!strncmp(buf, jbt_state_names[i], - strlen(jbt_state_names[i]))) { - rc = jbt6k74_enter_state(jbt, i); + for (i = 0; i < ARRAY_SIZE(jbt_power_mode_names); i++) { + if (!strncmp(buf, jbt_power_mode_names[i], + strlen(jbt_power_mode_names[i]))) { + rc = jbt6k74_enter_power_mode(jbt, i); if (rc) return rc; return count; @@ -492,7 +478,39 @@ static ssize_t state_write(struct device *dev, struct device_attribute *attr, return -EINVAL; } -static DEVICE_ATTR(state, 0644, state_read, state_write); +static DEVICE_ATTR(power_mode, 0644, power_mode_read, power_mode_write); + +static ssize_t resolution_read(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct jbt_info *jbt = dev_get_drvdata(dev); + + if (jbt->resolution >= ARRAY_SIZE(jbt_resolution_names)) + return -EIO; + + return sprintf(buf, "%s\n", jbt_resolution_names[jbt->resolution]); +} + +static ssize_t resolution_write(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct jbt_info *jbt = dev_get_drvdata(dev); + int i, rc; + + for (i = 0; i < ARRAY_SIZE(jbt_resolution_names); i++) { + if (!strncmp(buf, jbt_resolution_names[i], + strlen(jbt_resolution_names[i]))) { + rc = jbt6k74_set_resolution(jbt, i); + if (rc) + return rc; + return count; + } + } + + return -EINVAL; +} + +static DEVICE_ATTR(resolution, 0644, resolution_read, resolution_write); static int reg_by_string(const char *name) { @@ -547,8 +565,6 @@ static ssize_t reset_write(struct device *dev, struct device_attribute *attr, mutex_lock(&jbt->lock); - jbt->state = JBT_STATE_DEEP_STANDBY; - /* hard reset the jbt6k74 */ (pdata->reset)(0, 0); mdelay(1); @@ -562,7 +578,7 @@ static ssize_t reset_write(struct device *dev, struct device_attribute *attr, mutex_unlock(&jbt->lock); - jbt6k74_enter_state(jbt, jbt->normal_state); + jbt6k74_enter_power_mode(jbt, jbt->power_mode); return count; } @@ -574,7 +590,8 @@ static DEVICE_ATTR(gamma_blue_offset, 0644, gamma_read, gamma_write); static DEVICE_ATTR(reset, 0600, NULL, reset_write); static struct attribute *jbt_sysfs_entries[] = { - &dev_attr_state.attr, + &dev_attr_power_mode.attr, + &dev_attr_resolution.attr, &dev_attr_gamma_fine1.attr, &dev_attr_gamma_fine2.attr, &dev_attr_gamma_inclination.attr, @@ -593,34 +610,51 @@ static int fb_notifier_callback(struct notifier_block *self, { struct jbt_info *jbt; struct fb_event *evdata = data; + struct fb_info *info; int fb_blank; jbt = container_of(self, struct jbt_info, fb_notif); dev_dbg(&jbt->spi_dev->dev, "event=%lu\n", event); - if (event != FB_EVENT_BLANK && event != FB_EVENT_CONBLANK) - return 0; - - fb_blank = *(int *)evdata->data; - switch (fb_blank) { - case FB_BLANK_UNBLANK: - dev_dbg(&jbt->spi_dev->dev, "unblank\n"); - jbt6k74_enter_state(jbt, jbt->normal_state); - break; - case FB_BLANK_NORMAL: - dev_dbg(&jbt->spi_dev->dev, "blank\n"); - break; - case FB_BLANK_VSYNC_SUSPEND: - dev_dbg(&jbt->spi_dev->dev, "vsync suspend\n"); - break; - case FB_BLANK_HSYNC_SUSPEND: - dev_dbg(&jbt->spi_dev->dev, "hsync suspend\n"); - break; - case FB_BLANK_POWERDOWN: - dev_dbg(&jbt->spi_dev->dev, "powerdown\n"); - jbt6k74_enter_state(jbt, JBT_STATE_SLEEP); + switch (event) { + case FB_EVENT_MODE_CHANGE: + case FB_EVENT_MODE_CHANGE_ALL: + info = evdata->info; + if (info->var.xres == 240 && + info->var.yres == 320) { + jbt6k74_set_resolution(jbt, JBT_RESOLUTION_QVGA); + } else if (info->var.xres == 480 && + info->var.yres == 640) { + jbt6k74_set_resolution(jbt, JBT_RESOLUTION_VGA); + } else { + dev_err(&jbt->spi_dev->dev, "Unknown resolution. Entering sleep mode.\n"); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_SLEEP); + } break; + case FB_EVENT_BLANK: + case FB_EVENT_CONBLANK: + fb_blank = *(int *)evdata->data; + switch (fb_blank) { + case FB_BLANK_UNBLANK: + dev_dbg(&jbt->spi_dev->dev, "unblank\n"); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL); + break; + case FB_BLANK_NORMAL: + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_SLEEP); + dev_dbg(&jbt->spi_dev->dev, "blank\n"); + break; + case FB_BLANK_VSYNC_SUSPEND: + dev_dbg(&jbt->spi_dev->dev, "vsync suspend\n"); + break; + case FB_BLANK_HSYNC_SUSPEND: + dev_dbg(&jbt->spi_dev->dev, "hsync suspend\n"); + break; + case FB_BLANK_POWERDOWN: + dev_dbg(&jbt->spi_dev->dev, "powerdown\n"); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY); + break; + } } return 0; @@ -651,14 +685,14 @@ static int __devinit jbt_probe(struct spi_device *spi) return -ENOMEM; jbt->spi_dev = spi; - jbt->normal_state = JBT_STATE_NORMAL; - jbt->state = JBT_STATE_DEEP_STANDBY; - jbt->last_sleep = current_kernel_time(); + jbt->resolution = JBT_RESOLUTION_VGA; + jbt->power_mode = JBT_POWER_MODE_DEEP_STANDBY; + jbt->last_sleep = jiffies + msecs_to_jiffies(120); mutex_init(&jbt->lock); dev_set_drvdata(&spi->dev, jbt); - rc = jbt6k74_enter_state(jbt, JBT_STATE_NORMAL); + rc = jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL); if (rc < 0) { dev_err(&spi->dev, "cannot enter NORMAL state\n"); goto err_free_drvdata; @@ -685,7 +719,7 @@ static int __devinit jbt_probe(struct spi_device *spi) err_sysfs: sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group); err_standby: - jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY); err_free_drvdata: dev_set_drvdata(&spi->dev, NULL); kfree(jbt); @@ -699,7 +733,7 @@ static int __devexit jbt_remove(struct spi_device *spi) /* We don't want to switch off the display in case the user * accidentially onloads the module (whose use count normally is 0) */ - jbt6k74_enter_state(jbt, jbt->normal_state); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_NORMAL); fb_unregister_client(&jbt->fb_notif); sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group); @@ -714,7 +748,7 @@ static int jbt_suspend(struct spi_device *spi, pm_message_t state) { struct jbt_info *jbt = dev_get_drvdata(&spi->dev); - jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY); + jbt6k74_enter_power_mode(jbt, JBT_POWER_MODE_DEEP_STANDBY); dev_info(&spi->dev, "suspended\n"); @@ -726,7 +760,7 @@ int jbt6k74_resume(struct spi_device *spi) struct jbt_info *jbt = dev_get_drvdata(&spi->dev); struct jbt6k74_platform_data *pdata = spi->dev.platform_data; - jbt6k74_enter_state(jbt, jbt->normal_state); + jbt6k74_enter_power_mode(jbt, jbt->power_mode); if (pdata->resuming) (pdata->resuming)(0); |