static int ohci_hcd_sm501_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct resource *mem;
usb_remove_hcd(hcd);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
dma_release_declared_memory(&pdev->dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (mem)
release_mem_region(mem->start, resource_size(mem));
/* mask interrupts and disable power */
sm501_modify_reg(pdev->dev.parent, SM501_IRQ_MASK, 0, 1 << 6);
sm501_unit_power(pdev->dev.parent, SM501_GATE_USB_HOST, 0);
return 0;
}
static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev)
{
const struct hc_driver *driver = &ohci_sm501_hc_driver;
struct device *dev = &pdev->dev;
struct resource *res, *mem;
int retval, irq;
struct usb_hcd *hcd = NULL;
irq = retval = platform_get_irq(pdev, 0);
if (retval < 0)
goto err0;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (mem == NULL) {
dev_err(dev, "no resource definition for memory\n");
retval = -ENOENT;
goto err0;
}
if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) {
dev_err(dev, "request_mem_region failed\n");
retval = -EBUSY;
goto err0;
}
/* The sm501 chip is equipped with local memory that may be used
* by on-chip devices such as the video controller and the usb host.
* This driver uses dma_declare_coherent_memory() to make sure
* usb allocations with dma_alloc_coherent() allocate from
* this local memory. The dma_handle returned by dma_alloc_coherent()
* will be an offset starting from 0 for the first local memory byte.
*
* So as long as data is allocated using dma_alloc_coherent() all is
* fine. This is however not always the case - buffers may be allocated
* using kmalloc() - so the usb core needs to be told that it must copy
* data into our local memory if the buffers happen to be placed in
* regular memory. The HCD_LOCAL_MEM flag does just that.
*/
if (!dma_declare_coherent_memory(dev, mem->start,
mem->start - mem->parent->start,
resource_size(mem),
DMA_MEMORY_MAP |
DMA_MEMORY_EXCLUSIVE)) {
dev_err(dev, "cannot declare coherent memory\n");
retval = -ENXIO;
goto err1;
}
/* allocate, reserve and remap resources for registers */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(dev, "no resource definition for registers\n");
retval = -ENOENT;
goto err2;
}
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto err2;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, pdev->name)) {
dev_err(dev, "request_mem_region failed\n");
retval = -EBUSY;
goto err3;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (hcd->regs == NULL) {
dev_err(dev, "cannot remap registers\n");
retval = -ENXIO;
goto err4;
}
ohci_hcd_init(hcd_to_ohci(hcd));
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval)
goto err5;
/* enable power and unmask interrupts */
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
sm501_modify_reg(dev->parent, SM501_IRQ_MASK, 1 << 6, 0);
return 0;
err5:
iounmap(hcd->regs);
err4:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err3:
usb_put_hcd(hcd);
err2:
dma_release_declared_memory(dev);
err1:
release_mem_region(mem->start, resource_size(mem));
err0:
return retval;
}
static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev)
{
const struct hc_driver *driver = &ohci_sm501_hc_driver;
struct device *dev = &pdev->dev;
struct resource *res, *mem;
int retval, irq;
struct usb_hcd *hcd = NULL;
irq = retval = platform_get_irq(pdev, 0);
if (retval < 0)
goto err0;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (mem == NULL) {
dev_err(dev, "no resource definition for memory\n");
retval = -ENOENT;
goto err0;
}
if (!request_mem_region(mem->start, mem->end - mem->start + 1,
pdev->name)) {
dev_err(dev, "request_mem_region failed\n");
retval = -EBUSY;
goto err0;
}
if (!dma_declare_coherent_memory(dev, mem->start,
mem->start - mem->parent->start,
(mem->end - mem->start) + 1,
DMA_MEMORY_MAP |
DMA_MEMORY_EXCLUSIVE)) {
dev_err(dev, "cannot declare coherent memory\n");
retval = -ENXIO;
goto err1;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(dev, "no resource definition for registers\n");
retval = -ENOENT;
goto err2;
}
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto err2;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = res->end - res->start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, pdev->name)) {
dev_err(dev, "request_mem_region failed\n");
retval = -EBUSY;
goto err3;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (hcd->regs == NULL) {
dev_err(dev, "cannot remap registers\n");
retval = -ENXIO;
goto err4;
}
ohci_hcd_init(hcd_to_ohci(hcd));
retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
if (retval)
goto err4;
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
sm501_modify_reg(dev->parent, SM501_IRQ_MASK, 1 << 6, 0);
return 0;
err4:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err3:
usb_put_hcd(hcd);
err2:
dma_release_declared_memory(dev);
err1:
release_mem_region(mem->start, mem->end - mem->start + 1);
err0:
return retval;
}
static int sm501fb_set_par_pnl(struct fb_info *info)
{
struct sm501fb_par *par = info->par;
struct sm501fb_info *fbi = par->info;
struct fb_var_screeninfo *var = &info->var;
unsigned long control;
unsigned long reg;
int ret;
dev_dbg(fbi->dev, "%s(%p)\n", __func__, info);
/* activate this new configuration */
ret = sm501fb_set_par_common(info, var);
if (ret)
return ret;
sm501fb_pan_pnl(var, info);
sm501fb_set_par_geometry(info, var);
/* update control register */
control = readl(fbi->regs + SM501_DC_PANEL_CONTROL);
control &= (SM501_DC_PANEL_CONTROL_GAMMA |
SM501_DC_PANEL_CONTROL_VDD |
SM501_DC_PANEL_CONTROL_DATA |
SM501_DC_PANEL_CONTROL_BIAS |
SM501_DC_PANEL_CONTROL_FPEN |
SM501_DC_PANEL_CONTROL_CP |
SM501_DC_PANEL_CONTROL_CK |
SM501_DC_PANEL_CONTROL_HP |
SM501_DC_PANEL_CONTROL_VP |
SM501_DC_PANEL_CONTROL_HPD |
SM501_DC_PANEL_CONTROL_VPD);
control |= SM501_FIFO_3; /* fill if >3 free slots */
switch(var->bits_per_pixel) {
case 8:
control |= SM501_DC_PANEL_CONTROL_8BPP;
break;
case 16:
control |= SM501_DC_PANEL_CONTROL_16BPP;
sm501fb_setup_gamma(fbi, SM501_DC_PANEL_PALETTE);
break;
case 32:
control |= SM501_DC_PANEL_CONTROL_32BPP;
sm501fb_setup_gamma(fbi, SM501_DC_PANEL_PALETTE);
break;
default:
BUG();
}
writel(0x0, fbi->regs + SM501_DC_PANEL_PANNING_CONTROL);
/* panel plane top left and bottom right location */
writel(0x00, fbi->regs + SM501_DC_PANEL_TL_LOC);
reg = var->xres - 1;
reg |= (var->yres - 1) << 16;
writel(reg, fbi->regs + SM501_DC_PANEL_BR_LOC);
/* program panel control register */
control |= SM501_DC_PANEL_CONTROL_TE; /* enable PANEL timing */
control |= SM501_DC_PANEL_CONTROL_EN; /* enable PANEL gfx plane */
if ((var->sync & FB_SYNC_HOR_HIGH_ACT) == 0)
control |= SM501_DC_PANEL_CONTROL_HSP;
if ((var->sync & FB_SYNC_VERT_HIGH_ACT) == 0)
control |= SM501_DC_PANEL_CONTROL_VSP;
writel(control, fbi->regs + SM501_DC_PANEL_CONTROL);
sm501fb_sync_regs(fbi);
/* ensure the panel interface is not tristated at this point */
sm501_modify_reg(fbi->dev->parent, SM501_SYSTEM_CONTROL,
0, SM501_SYSCTRL_PANEL_TRISTATE);
/* power the panel up */
sm501fb_panel_power(fbi, 1);
return 0;
}