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>

diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 6197db7d48598e3d153395c9be15587933cf4cde..f856e9463a9f90ed3b9a11913ddf371c09e8a57f 100644 (file)
--- 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),

diff --git a/include/linux/mfd/tc6393xb.h b/include/linux/mfd/tc6393xb.h
index 4437736ebe1944a6bfd3adcaaa1ecffa95a02b42..626e448205c543ed8d6b2cd3a361d07d67719c4a 100644 (file)
--- a/include/linux/mfd/tc6393xb.h
+++ b/include/linux/mfd/tc6393xb.h
@@ -17,6 +17,8 @@
 #ifndef MFD_TC6393XB_H
 #define MFD_TC6393XB_H
 
+#include <linux/fb.h>
+
 /* Also one should provide the CK3P6MI clock */
 struct tc6393xb_platform_data {
        u16     scr_pll2cr;     /* PLL2 Control */
@@ -33,18 +35,24 @@ struct tc6393xb_platform_data {
        void    (*teardown)(struct platform_device *dev);
 
        struct tmio_nand_data   *nand_data;
+       struct tmio_fb_data     *fb_data;
 
        unsigned resume_restore : 1; /* make special actions
                                        to preserve the state
                                        on suspend/resume */
 };
 
+extern int tc6393xb_lcd_mode(struct platform_device *fb,
+                            const struct fb_videomode *mode);
+extern int tc6393xb_lcd_set_power(struct platform_device *fb, bool on);
+
 /*
  * Relative to irq_base
  */
 #define        IRQ_TC6393_NAND         0
 #define        IRQ_TC6393_MMC          1
 #define        IRQ_TC6393_OHCI         2
+#define        IRQ_TC6393_FB           4
 
 #define        TC6393XB_NR_IRQS        8