From bada46e5ab10b09b0f86e8b8ede009e759a16adf Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Sun, 6 Feb 2011 15:28:46 -0800 Subject: [PATCH] staging: olpc_dcon: move more variables into dcon_priv Global variables for display mode and the current sleep state can go into dcon_priv as well. Signed-off-by: Andres Salomon Signed-off-by: Greg Kroah-Hartman --- drivers/staging/olpc_dcon/olpc_dcon.c | 69 ++++++++++++++------------- drivers/staging/olpc_dcon/olpc_dcon.h | 4 -- 2 files changed, 35 insertions(+), 38 deletions(-) diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c index a81e325f1102..5d85d779952d 100644 --- a/drivers/staging/olpc_dcon/olpc_dcon.c +++ b/drivers/staging/olpc_dcon/olpc_dcon.c @@ -59,8 +59,12 @@ struct dcon_priv { struct work_struct switch_source; struct notifier_block reboot_nb; + /* Shadow register for the DCON_REG_MODE register */ + u8 disp_mode; + /* Current output type; true == mono, false == color */ bool mono:1; + bool asleep:1; }; /* I2C structures */ @@ -84,12 +88,6 @@ static int dcon_source; /* Desired source */ static int dcon_pending; -/* Current sleep status (not yet implemented) */ -static int dcon_sleep_val = DCON_ACTIVE; - -/* Shadow register for the DCON_REG_MODE register */ -static unsigned short dcon_disp_mode; - /* Variables used during switches */ static int dcon_switched; static struct timespec dcon_irq_time; @@ -164,11 +162,12 @@ static int dcon_hw_init(struct dcon_priv *dcon, int is_init) /* Colour swizzle, AA, no passthrough, backlight */ if (is_init) { - dcon_disp_mode = MODE_PASSTHRU | MODE_BL_ENABLE | MODE_CSWIZZLE; + dcon->disp_mode = MODE_PASSTHRU | MODE_BL_ENABLE | + MODE_CSWIZZLE; if (useaa) - dcon_disp_mode |= MODE_COL_AA; + dcon->disp_mode |= MODE_COL_AA; } - i2c_smbus_write_word_data(client, DCON_REG_MODE, dcon_disp_mode); + i2c_smbus_write_word_data(client, DCON_REG_MODE, dcon->disp_mode); /* Set the scanline to interrupt on during resume */ @@ -245,11 +244,11 @@ static void dcon_set_backlight_hw(struct dcon_priv *dcon, int level) /* Purposely turn off the backlight when we go to level 0 */ if (bl_val == 0) { - dcon_disp_mode &= ~MODE_BL_ENABLE; - dcon_write(dcon, DCON_REG_MODE, dcon_disp_mode); - } else if (!(dcon_disp_mode & MODE_BL_ENABLE)) { - dcon_disp_mode |= MODE_BL_ENABLE; - dcon_write(dcon, DCON_REG_MODE, dcon_disp_mode); + dcon->disp_mode &= ~MODE_BL_ENABLE; + dcon_write(dcon, DCON_REG_MODE, dcon->disp_mode); + } else if (!(dcon->disp_mode & MODE_BL_ENABLE)) { + dcon->disp_mode |= MODE_BL_ENABLE; + dcon_write(dcon, DCON_REG_MODE, dcon->disp_mode); } } @@ -273,16 +272,16 @@ static int dcon_set_mono_mode(struct dcon_priv *dcon, bool enable_mono) dcon->mono = enable_mono; if (enable_mono) { - dcon_disp_mode &= ~(MODE_CSWIZZLE | MODE_COL_AA); - dcon_disp_mode |= MODE_MONO_LUMA; + dcon->disp_mode &= ~(MODE_CSWIZZLE | MODE_COL_AA); + dcon->disp_mode |= MODE_MONO_LUMA; } else { - dcon_disp_mode &= ~(MODE_MONO_LUMA); - dcon_disp_mode |= MODE_CSWIZZLE; + dcon->disp_mode &= ~(MODE_MONO_LUMA); + dcon->disp_mode |= MODE_CSWIZZLE; if (useaa) - dcon_disp_mode |= MODE_COL_AA; + dcon->disp_mode |= MODE_COL_AA; } - dcon_write(dcon, DCON_REG_MODE, dcon_disp_mode); + dcon_write(dcon, DCON_REG_MODE, dcon->disp_mode); return 0; } @@ -290,36 +289,36 @@ static int dcon_set_mono_mode(struct dcon_priv *dcon, bool enable_mono) * DCONLOAD works in a sleep and account for it accordingly */ -static void dcon_sleep(struct dcon_priv *dcon, int state) +static void dcon_sleep(struct dcon_priv *dcon, bool sleep) { int x; /* Turn off the backlight and put the DCON to sleep */ - if (state == dcon_sleep_val) + if (dcon->asleep == sleep) return; if (!olpc_board_at_least(olpc_board(0xc2))) return; - if (state == DCON_SLEEP) { + if (sleep) { x = 0; x = olpc_ec_cmd(0x26, (unsigned char *) &x, 1, NULL, 0); if (x) printk(KERN_WARNING "olpc-dcon: unable to force dcon " "to power down: %d!\n", x); else - dcon_sleep_val = state; + dcon->asleep = sleep; } else { /* Only re-enable the backlight if the backlight value is set */ if (bl_val != 0) - dcon_disp_mode |= MODE_BL_ENABLE; + dcon->disp_mode |= MODE_BL_ENABLE; x = dcon_bus_stabilize(dcon, 1); if (x) printk(KERN_WARNING "olpc-dcon: unable to reinit dcon" " hardware: %d!\n", x); else - dcon_sleep_val = state; + dcon->asleep = sleep; /* Restore backlight */ dcon_set_backlight_hw(dcon, bl_val); @@ -367,7 +366,7 @@ static void dcon_source_switch(struct work_struct *work) printk("dcon_source_switch to CPU\n"); /* Enable the scanline interrupt bit */ if (dcon_write(dcon, DCON_REG_MODE, - dcon_disp_mode | MODE_SCAN_INT)) + dcon->disp_mode | MODE_SCAN_INT)) printk(KERN_ERR "olpc-dcon: couldn't enable scanline interrupt!\n"); else { @@ -380,7 +379,7 @@ static void dcon_source_switch(struct work_struct *work) printk(KERN_ERR "olpc-dcon: Timeout entering CPU mode; expect a screen glitch.\n"); /* Turn off the scanline interrupt */ - if (dcon_write(dcon, DCON_REG_MODE, dcon_disp_mode)) + if (dcon_write(dcon, DCON_REG_MODE, dcon->disp_mode)) printk(KERN_ERR "olpc-dcon: couldn't disable scanline interrupt!\n"); /* @@ -508,14 +507,16 @@ static int dconbl_get(struct backlight_device *dev) static ssize_t dcon_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%4.4X\n", dcon_disp_mode); + struct dcon_priv *dcon = dev_get_drvdata(dev); + return sprintf(buf, "%4.4X\n", dcon->disp_mode); } static ssize_t dcon_sleep_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", dcon_sleep_val); + struct dcon_priv *dcon = dev_get_drvdata(dev); + return sprintf(buf, "%d\n", dcon->asleep ? 1 : 0); } static ssize_t dcon_freeze_show(struct device *dev, @@ -621,7 +622,7 @@ static ssize_t dcon_sleep_store(struct device *dev, if (_strtoul(buf, count, &output)) return -EINVAL; - dcon_sleep(dev_get_drvdata(dev), output ? DCON_SLEEP : DCON_ACTIVE); + dcon_sleep(dev_get_drvdata(dev), output ? true : false); return count; } @@ -679,7 +680,7 @@ static int fb_notifier_callback(struct notifier_block *self, if (((event != FB_EVENT_BLANK) && (event != FB_EVENT_CONBLANK)) || ignore_fb_events) return 0; - dcon_sleep(dcon, (*blank) ? DCON_SLEEP : DCON_ACTIVE); + dcon_sleep(dcon, *blank ? true : false); return 0; } @@ -808,7 +809,7 @@ static int dcon_suspend(struct i2c_client *client, pm_message_t state) { struct dcon_priv *dcon = i2c_get_clientdata(client); - if (dcon_sleep_val == DCON_ACTIVE) { + if (!dcon->asleep) { /* Set up the DCON to have the source */ dcon_set_source_sync(dcon, DCON_SOURCE_DCON); } @@ -820,7 +821,7 @@ static int dcon_resume(struct i2c_client *client) { struct dcon_priv *dcon = i2c_get_clientdata(client); - if (dcon_sleep_val == DCON_ACTIVE) { + if (!dcon->asleep) { dcon_bus_stabilize(dcon, 0); dcon_set_source(dcon, DCON_SOURCE_CPU); } diff --git a/drivers/staging/olpc_dcon/olpc_dcon.h b/drivers/staging/olpc_dcon/olpc_dcon.h index 77dcbd1934fa..cef2473bccf3 100644 --- a/drivers/staging/olpc_dcon/olpc_dcon.h +++ b/drivers/staging/olpc_dcon/olpc_dcon.h @@ -41,10 +41,6 @@ #define DCON_SOURCE_DCON 0 #define DCON_SOURCE_CPU 1 -/* Sleep values */ -#define DCON_ACTIVE 0 -#define DCON_SLEEP 1 - /* Interrupt */ #define DCON_IRQ 6 -- 2.20.1