mbxdebugfs.c

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#include <linux/debugfs.h>
#include <linux/slab.h>

#define BIG_BUFFER_SIZE (1024)

static char big_buffer[BIG_BUFFER_SIZE];

struct mbxfb_debugfs_data {
    struct dentry *dir;
    struct dentry *sysconf;
    struct dentry *clock;
    struct dentry *display;
    struct dentry *gsctl;
    struct dentry *sdram;
    struct dentry *misc;
};

static int open_file_generic(struct inode *inode, struct file *file)
{
    file->private_data = inode->u.generic_ip;
    return 0;
}

static ssize_t write_file_dummy(struct file *file, const char __user *buf,
                size_t count, loff_t *ppos)
{
    return count;
}

static ssize_t sysconf_read_file(struct file *file, char __user *userbuf,
                 size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "SYSCFG = %08x\n", readl(SYSCFG));
    s += sprintf(s, "PFBASE = %08x\n", readl(PFBASE));
    s += sprintf(s, "PFCEIL = %08x\n", readl(PFCEIL));
    s += sprintf(s, "POLLFLAG = %08x\n", readl(POLLFLAG));
    s += sprintf(s, "SYSRST = %08x\n", readl(SYSRST));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}


static ssize_t gsctl_read_file(struct file *file, char __user *userbuf,
                   size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "GSCTRL = %08x\n", readl(GSCTRL));
    s += sprintf(s, "VSCTRL = %08x\n", readl(VSCTRL));
    s += sprintf(s, "GBBASE = %08x\n", readl(GBBASE));
    s += sprintf(s, "VBBASE = %08x\n", readl(VBBASE));
    s += sprintf(s, "GDRCTRL = %08x\n", readl(GDRCTRL));
    s += sprintf(s, "VCMSK = %08x\n", readl(VCMSK));
    s += sprintf(s, "GSCADR = %08x\n", readl(GSCADR));
    s += sprintf(s, "VSCADR = %08x\n", readl(VSCADR));
    s += sprintf(s, "VUBASE = %08x\n", readl(VUBASE));
    s += sprintf(s, "VVBASE = %08x\n", readl(VVBASE));
    s += sprintf(s, "GSADR = %08x\n", readl(GSADR));
    s += sprintf(s, "VSADR = %08x\n", readl(VSADR));
    s += sprintf(s, "HCCTRL = %08x\n", readl(HCCTRL));
    s += sprintf(s, "HCSIZE = %08x\n", readl(HCSIZE));
    s += sprintf(s, "HCPOS = %08x\n", readl(HCPOS));
    s += sprintf(s, "HCBADR = %08x\n", readl(HCBADR));
    s += sprintf(s, "HCCKMSK = %08x\n", readl(HCCKMSK));
    s += sprintf(s, "GPLUT = %08x\n", readl(GPLUT));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}

static ssize_t display_read_file(struct file *file, char __user *userbuf,
                 size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "DSCTRL = %08x\n", readl(DSCTRL));
    s += sprintf(s, "DHT01 = %08x\n", readl(DHT01));
    s += sprintf(s, "DHT02 = %08x\n", readl(DHT02));
    s += sprintf(s, "DHT03 = %08x\n", readl(DHT03));
    s += sprintf(s, "DVT01 = %08x\n", readl(DVT01));
    s += sprintf(s, "DVT02 = %08x\n", readl(DVT02));
    s += sprintf(s, "DVT03 = %08x\n", readl(DVT03));
    s += sprintf(s, "DBCOL = %08x\n", readl(DBCOL));
    s += sprintf(s, "BGCOLOR = %08x\n", readl(BGCOLOR));
    s += sprintf(s, "DINTRS = %08x\n", readl(DINTRS));
    s += sprintf(s, "DINTRE = %08x\n", readl(DINTRE));
    s += sprintf(s, "DINTRCNT = %08x\n", readl(DINTRCNT));
    s += sprintf(s, "DSIG = %08x\n", readl(DSIG));
    s += sprintf(s, "DMCTRL = %08x\n", readl(DMCTRL));
    s += sprintf(s, "CLIPCTRL = %08x\n", readl(CLIPCTRL));
    s += sprintf(s, "SPOCTRL = %08x\n", readl(SPOCTRL));
    s += sprintf(s, "SVCTRL = %08x\n", readl(SVCTRL));
    s += sprintf(s, "DLSTS = %08x\n", readl(DLSTS));
    s += sprintf(s, "DLLCTRL = %08x\n", readl(DLLCTRL));
    s += sprintf(s, "DVLNUM = %08x\n", readl(DVLNUM));
    s += sprintf(s, "DUCTRL = %08x\n", readl(DUCTRL));
    s += sprintf(s, "DVECTRL = %08x\n", readl(DVECTRL));
    s += sprintf(s, "DHDET = %08x\n", readl(DHDET));
    s += sprintf(s, "DVDET = %08x\n", readl(DVDET));
    s += sprintf(s, "DODMSK = %08x\n", readl(DODMSK));
    s += sprintf(s, "CSC01 = %08x\n", readl(CSC01));
    s += sprintf(s, "CSC02 = %08x\n", readl(CSC02));
    s += sprintf(s, "CSC03 = %08x\n", readl(CSC03));
    s += sprintf(s, "CSC04 = %08x\n", readl(CSC04));
    s += sprintf(s, "CSC05 = %08x\n", readl(CSC05));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}

static ssize_t clock_read_file(struct file *file, char __user *userbuf,
                   size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "SYSCLKSRC = %08x\n", readl(SYSCLKSRC));
    s += sprintf(s, "PIXCLKSRC = %08x\n", readl(PIXCLKSRC));
    s += sprintf(s, "CLKSLEEP = %08x\n", readl(CLKSLEEP));
    s += sprintf(s, "COREPLL = %08x\n", readl(COREPLL));
    s += sprintf(s, "DISPPLL = %08x\n", readl(DISPPLL));
    s += sprintf(s, "PLLSTAT = %08x\n", readl(PLLSTAT));
    s += sprintf(s, "VOVRCLK = %08x\n", readl(VOVRCLK));
    s += sprintf(s, "PIXCLK = %08x\n", readl(PIXCLK));
    s += sprintf(s, "MEMCLK = %08x\n", readl(MEMCLK));
    s += sprintf(s, "M24CLK = %08x\n", readl(M24CLK));
    s += sprintf(s, "MBXCLK = %08x\n", readl(MBXCLK));
    s += sprintf(s, "SDCLK = %08x\n", readl(SDCLK));
    s += sprintf(s, "PIXCLKDIV = %08x\n", readl(PIXCLKDIV));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}

static ssize_t sdram_read_file(struct file *file, char __user *userbuf,
                   size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "LMRST = %08x\n", readl(LMRST));
    s += sprintf(s, "LMCFG = %08x\n", readl(LMCFG));
    s += sprintf(s, "LMPWR = %08x\n", readl(LMPWR));
    s += sprintf(s, "LMPWRSTAT = %08x\n", readl(LMPWRSTAT));
    s += sprintf(s, "LMCEMR = %08x\n", readl(LMCEMR));
    s += sprintf(s, "LMTYPE = %08x\n", readl(LMTYPE));
    s += sprintf(s, "LMTIM = %08x\n", readl(LMTIM));
    s += sprintf(s, "LMREFRESH = %08x\n", readl(LMREFRESH));
    s += sprintf(s, "LMPROTMIN = %08x\n", readl(LMPROTMIN));
    s += sprintf(s, "LMPROTMAX = %08x\n", readl(LMPROTMAX));
    s += sprintf(s, "LMPROTCFG = %08x\n", readl(LMPROTCFG));
    s += sprintf(s, "LMPROTERR = %08x\n", readl(LMPROTERR));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}

static ssize_t misc_read_file(struct file *file, char __user *userbuf,
                   size_t count, loff_t *ppos)
{
    char * s = big_buffer;

    s += sprintf(s, "LCD_CONFIG = %08x\n", readl(LCD_CONFIG));
    s += sprintf(s, "ODFBPWR = %08x\n", readl(ODFBPWR));
    s += sprintf(s, "ODFBSTAT = %08x\n", readl(ODFBSTAT));
    s += sprintf(s, "ID = %08x\n", readl(ID));

    return  simple_read_from_buffer(userbuf, count, ppos,
                    big_buffer, s-big_buffer);
}


static const struct file_operations sysconf_fops = {
    .read = sysconf_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static const struct file_operations clock_fops = {
    .read = clock_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static const struct file_operations display_fops = {
    .read = display_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static const struct file_operations gsctl_fops = {
    .read = gsctl_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static const struct file_operations sdram_fops = {
    .read = sdram_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static const struct file_operations misc_fops = {
    .read = misc_read_file,
    .write = write_file_dummy,
    .open = open_file_generic,
    .llseek = default_llseek,
};

static void __devinit mbxfb_debugfs_init(struct fb_info *fbi)
{
    struct mbxfb_info *mfbi = fbi->par;
    struct mbxfb_debugfs_data *dbg;

    dbg = kzalloc(sizeof(struct mbxfb_debugfs_data), GFP_KERNEL);
    mfbi->debugfs_data = dbg;

    dbg->dir = debugfs_create_dir("mbxfb", NULL);
    dbg->sysconf = debugfs_create_file("sysconf", 0444, dbg->dir,
                      fbi, &sysconf_fops);
    dbg->clock = debugfs_create_file("clock", 0444, dbg->dir,
                    fbi, &clock_fops);
    dbg->display = debugfs_create_file("display", 0444, dbg->dir,
                      fbi, &display_fops);
    dbg->gsctl = debugfs_create_file("gsctl", 0444, dbg->dir,
                    fbi, &gsctl_fops);
    dbg->sdram = debugfs_create_file("sdram", 0444, dbg->dir,
                    fbi, &sdram_fops);
    dbg->misc = debugfs_create_file("misc", 0444, dbg->dir,
                    fbi, &misc_fops);
}

static void __devexit mbxfb_debugfs_remove(struct fb_info *fbi)
{
    struct mbxfb_info *mfbi = fbi->par;
    struct mbxfb_debugfs_data *dbg = mfbi->debugfs_data;

    debugfs_remove(dbg->misc);
    debugfs_remove(dbg->sdram);
    debugfs_remove(dbg->gsctl);
    debugfs_remove(dbg->display);
    debugfs_remove(dbg->clock);
    debugfs_remove(dbg->sysconf);
    debugfs_remove(dbg->dir);
}