broadsheetfb: add multiple panel type support
Jaya Kumar [Wed, 10 Mar 2010 23:21:24 +0000 (15:21 -0800)]
Update broadsheetfb to add support for multiple panel types.  The 3.7" and
6" are known to work but the 9.7" is untested due to lack of hardware.

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/arm/mach-pxa/am300epd.c
drivers/video/broadsheetfb.c
include/video/broadsheetfb.h

index 4bd10a1..993d75e 100644 (file)
@@ -288,7 +288,7 @@ int __init am300_init(void)
 }
 
 module_param(panel_type, uint, 0);
-MODULE_PARM_DESC(panel_type, "Select the panel type: 6, 8, 97");
+MODULE_PARM_DESC(panel_type, "Select the panel type: 37, 6, 97");
 
 MODULE_DESCRIPTION("board driver for am300 epd kit");
 MODULE_AUTHOR("Jaya Kumar");
index df9ccb9..8f01106 100644 (file)
 
 #include <video/broadsheetfb.h>
 
-/* Display specific information */
+/* track panel specific parameters */
+struct panel_info {
+       int w;
+       int h;
+       u16 sdcfg;
+       u16 gdcfg;
+       u16 lutfmt;
+       u16 fsynclen;
+       u16 fendfbegin;
+       u16 lsynclen;
+       u16 lendlbegin;
+       u16 pixclk;
+};
+
+/* table of panel specific parameters to be indexed into by the board drivers */
+static struct panel_info panel_table[] = {
+       {       /* standard 6" on TFT backplane */
+               .w = 800,
+               .h = 600,
+               .sdcfg = (100 | (1 << 8) | (1 << 9)),
+               .gdcfg = 2,
+               .lutfmt = (4 | (1 << 7)),
+               .fsynclen = 4,
+               .fendfbegin = (10 << 8) | 4,
+               .lsynclen = 10,
+               .lendlbegin = (100 << 8) | 4,
+               .pixclk = 6,
+       },
+       {       /* custom 3.7" flexible on PET or steel */
+               .w = 320,
+               .h = 240,
+               .sdcfg = (67 | (0 << 8) | (0 << 9) | (0 << 10) | (0 << 12)),
+               .gdcfg = 3,
+               .lutfmt = (4 | (1 << 7)),
+               .fsynclen = 0,
+               .fendfbegin = (80 << 8) | 4,
+               .lsynclen = 10,
+               .lendlbegin = (80 << 8) | 20,
+               .pixclk = 14,
+       },
+       {       /* standard 9.7" on TFT backplane */
+               .w = 1200,
+               .h = 825,
+               .sdcfg = (100 | (1 << 8) | (1 << 9) | (0 << 10) | (0 << 12)),
+               .gdcfg = 2,
+               .lutfmt = (4 | (1 << 7)),
+               .fsynclen = 0,
+               .fendfbegin = (4 << 8) | 4,
+               .lsynclen = 4,
+               .lendlbegin = (60 << 8) | 10,
+               .pixclk = 3,
+       },
+};
+
 #define DPY_W 800
 #define DPY_H 600
 
@@ -160,6 +213,14 @@ static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg,
        par->board->set_ctl(par, BS_CS, 1);
 }
 
+static void broadsheet_write_reg32(struct broadsheetfb_par *par, u16 reg,
+                                       u32 data)
+{
+       broadsheet_write_reg(par, reg, cpu_to_le32(data) & 0xFFFF);
+       broadsheet_write_reg(par, reg + 2, (cpu_to_le32(data) >> 16) & 0xFFFF);
+}
+
+
 static u16 broadsheet_read_reg(struct broadsheetfb_par *par, u16 reg)
 {
        broadsheet_send_command(par, reg);
@@ -170,24 +231,28 @@ static u16 broadsheet_read_reg(struct broadsheetfb_par *par, u16 reg)
 static void __devinit broadsheet_init_display(struct broadsheetfb_par *par)
 {
        u16 args[5];
-
-       args[0] = DPY_W;
-       args[1] = DPY_H;
-       args[2] = (100 | (1 << 8) | (1 << 9)); /* sdcfg */
-       args[3] = 2; /* gdrv cfg */
-       args[4] = (4 | (1 << 7)); /* lut index format */
+       int xres = par->info->var.xres;
+       int yres = par->info->var.yres;
+
+       args[0] = panel_table[par->panel_index].w;
+       args[1] = panel_table[par->panel_index].h;
+       args[2] = panel_table[par->panel_index].sdcfg;
+       args[3] = panel_table[par->panel_index].gdcfg;
+       args[4] = panel_table[par->panel_index].lutfmt;
        broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args);
 
        /* did the controller really set it? */
        broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args);
 
-       args[0] = 4; /* fsync len */
-       args[1] = (10 << 8) | 4; /* fend/fbegin len */
-       args[2] = 10; /* line sync len */
-       args[3] = (100 << 8) | 4; /* line end/begin len */
-       args[4] = 6; /* pixel clock cfg */
+       args[0] = panel_table[par->panel_index].fsynclen;
+       args[1] = panel_table[par->panel_index].fendfbegin;
+       args[2] = panel_table[par->panel_index].lsynclen;
+       args[3] = panel_table[par->panel_index].lendlbegin;
+       args[4] = panel_table[par->panel_index].pixclk;
        broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_TMG, 5, args);
 
+       broadsheet_write_reg32(par, 0x310, xres*yres*2);
+
        /* setup waveform */
        args[0] = 0x886;
        args[1] = 0;
@@ -207,8 +272,9 @@ static void __devinit broadsheet_init_display(struct broadsheetfb_par *par)
        args[0] = 0x154;
        broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args);
 
-       broadsheet_burst_write(par, DPY_W*DPY_H/2,
-                               (u16 *) par->info->screen_base);
+       broadsheet_burst_write(par, (panel_table[par->panel_index].w *
+                                       panel_table[par->panel_index].h)/2,
+                                       (u16 *) par->info->screen_base);
 
        broadsheet_send_command(par, BS_CMD_LD_IMG_END);
 
@@ -277,8 +343,9 @@ static void broadsheetfb_dpy_update(struct broadsheetfb_par *par)
 
        args[0] = 0x154;
        broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args);
-       broadsheet_burst_write(par, DPY_W*DPY_H/2,
-                               (u16 *) par->info->screen_base);
+       broadsheet_burst_write(par, (panel_table[par->panel_index].w *
+                                       panel_table[par->panel_index].h)/2,
+                                       (u16 *) par->info->screen_base);
 
        broadsheet_send_command(par, BS_CMD_LD_IMG_END);
 
@@ -436,6 +503,8 @@ static int __devinit broadsheetfb_probe(struct platform_device *dev)
        unsigned char *videomemory;
        struct broadsheetfb_par *par;
        int i;
+       int dpyw, dpyh;
+       int panel_index;
 
        /* pick up board specific routines */
        board = dev->dev.platform_data;
@@ -450,7 +519,24 @@ static int __devinit broadsheetfb_probe(struct platform_device *dev)
        if (!info)
                goto err;
 
-       videomemorysize = (DPY_W*DPY_H);
+       switch (board->get_panel_type()) {
+       case 37:
+               panel_index = 1;
+               break;
+       case 97:
+               panel_index = 2;
+               break;
+       case 6:
+       default:
+               panel_index = 0;
+               break;
+       }
+
+       dpyw = panel_table[panel_index].w;
+       dpyh = panel_table[panel_index].h;
+
+       videomemorysize = roundup((dpyw*dpyh), PAGE_SIZE);
+
        videomemory = vmalloc(videomemorysize);
        if (!videomemory)
                goto err_fb_rel;
@@ -460,10 +546,17 @@ static int __devinit broadsheetfb_probe(struct platform_device *dev)
        info->screen_base = (char *)videomemory;
        info->fbops = &broadsheetfb_ops;
 
+       broadsheetfb_var.xres = dpyw;
+       broadsheetfb_var.yres = dpyh;
+       broadsheetfb_var.xres_virtual = dpyw;
+       broadsheetfb_var.yres_virtual = dpyh;
        info->var = broadsheetfb_var;
+
+       broadsheetfb_fix.line_length = dpyw;
        info->fix = broadsheetfb_fix;
        info->fix.smem_len = videomemorysize;
        par = info->par;
+       par->panel_index = panel_index;
        par->info = info;
        par->board = board;
        par->write_reg = broadsheet_write_reg;
index a758534..a2c2829 100644 (file)
@@ -41,6 +41,7 @@ struct broadsheetfb_par {
        void (*write_reg)(struct broadsheetfb_par *, u16 reg, u16 val);
        u16 (*read_reg)(struct broadsheetfb_par *, u16 reg);
        wait_queue_head_t waitq;
+       int panel_index;
 };
 
 /* board specific routines */