mfd: support tmiofb cell on tc6393xb

Add support for tmiofb cell found in tc6393xb chip.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 6197db7d4859..f856e9463a9f 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -114,6 +114,7 @@ enum {
         TC6393XB_CELL_NAND,
         TC6393XB_CELL_MMC,
         TC6393XB_CELL_OHCI,
+        TC6393XB_CELL_FB,
 };
 
 /*--------------------------------------------------------------------------*/
@@ -199,6 +200,29 @@ const static struct resource tc6393xb_ohci_resources[] = {
         },
 };
 
+static struct resource __devinitdata tc6393xb_fb_resources[] = {
+        {
+                .start  = 0x5000,
+                .end    = 0x51ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = 0x0500,
+                .end    = 0x05ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = 0x100000,
+                .end    = 0x1fffff,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = IRQ_TC6393_FB,
+                .end    = IRQ_TC6393_FB,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
 static int tc6393xb_ohci_enable(struct platform_device *dev)
 {
         struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
@@ -243,6 +267,81 @@ static int tc6393xb_ohci_disable(struct platform_device *dev)
         return 0;
 }
 
+static int tc6393xb_fb_enable(struct platform_device *dev)
+{
+        struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+        unsigned long flags;
+        u16 ccr;
+
+        spin_lock_irqsave(&tc6393xb->lock, flags);
+
+        ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+        ccr &= ~SCR_CCR_MCLK_MASK;
+        ccr |= SCR_CCR_MCLK_48;
+        tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+        spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+        return 0;
+}
+
+static int tc6393xb_fb_disable(struct platform_device *dev)
+{
+        struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+        unsigned long flags;
+        u16 ccr;
+
+        spin_lock_irqsave(&tc6393xb->lock, flags);
+
+        ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+        ccr &= ~SCR_CCR_MCLK_MASK;
+        ccr |= SCR_CCR_MCLK_OFF;
+        tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+        spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+        return 0;
+}
+
+int tc6393xb_lcd_set_power(struct platform_device *fb, bool on)
+{
+        struct platform_device *dev = to_platform_device(fb->dev.parent);
+        struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+        u8 fer;
+        unsigned long flags;
+
+        spin_lock_irqsave(&tc6393xb->lock, flags);
+
+        fer = ioread8(tc6393xb->scr + SCR_FER);
+        if (on)
+                fer |= SCR_FER_SLCDEN;
+        else
+                fer &= ~SCR_FER_SLCDEN;
+        iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+        spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+        return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_set_power);
+
+int tc6393xb_lcd_mode(struct platform_device *fb,
+                                        const struct fb_videomode *mode) {
+        struct platform_device *dev = to_platform_device(fb->dev.parent);
+        struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+        unsigned long flags;
+
+        spin_lock_irqsave(&tc6393xb->lock, flags);
+
+        iowrite16(mode->pixclock, tc6393xb->scr + SCR_PLL1CR + 0);
+        iowrite16(mode->pixclock >> 16, tc6393xb->scr + SCR_PLL1CR + 2);
+
+        spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+        return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_mode);
+
 static struct mfd_cell __devinitdata tc6393xb_cells[] = {
         [TC6393XB_CELL_NAND] = {
                 .name = "tmio-nand",
@@ -264,6 +363,15 @@ static struct mfd_cell __devinitdata tc6393xb_cells[] = {
                 .resume = tc6393xb_ohci_enable,
                 .disable = tc6393xb_ohci_disable,
         },
+        [TC6393XB_CELL_FB] = {
+                .name = "tmio-fb",
+                .num_resources = ARRAY_SIZE(tc6393xb_fb_resources),
+                .resources = tc6393xb_fb_resources,
+                .enable = tc6393xb_fb_enable,
+                .suspend = tc6393xb_fb_disable,
+                .resume = tc6393xb_fb_enable,
+                .disable = tc6393xb_fb_disable,
+        },
 };
 
 /*--------------------------------------------------------------------------*/
@@ -547,6 +655,7 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
                 &tc6393xb_cells[TC6393XB_CELL_NAND];
         tc6393xb_cells[TC6393XB_CELL_NAND].data_size =
                 sizeof(tc6393xb_cells[TC6393XB_CELL_NAND]);
+
         tc6393xb_cells[TC6393XB_CELL_MMC].platform_data =
                 &tc6393xb_cells[TC6393XB_CELL_MMC];
         tc6393xb_cells[TC6393XB_CELL_MMC].data_size =
@@ -557,6 +666,11 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
         tc6393xb_cells[TC6393XB_CELL_OHCI].data_size =
                 sizeof(tc6393xb_cells[TC6393XB_CELL_OHCI]);
 
+        tc6393xb_cells[TC6393XB_CELL_FB].driver_data = tcpd->fb_data;
+        tc6393xb_cells[TC6393XB_CELL_FB].platform_data =
+                &tc6393xb_cells[TC6393XB_CELL_FB];
+        tc6393xb_cells[TC6393XB_CELL_FB].data_size =
+                sizeof(tc6393xb_cells[TC6393XB_CELL_FB]);
 
         ret = mfd_add_devices(&dev->dev, dev->id,
                         tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),