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-rw-r--r--target/linux/s3c24xx/files-2.6.30/drivers/video/display/jbt6k74.c338
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 eb4e46d13..883159a5b 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);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 11:31:13 +0000