diff options
Diffstat (limited to 'drivers/gpu/drm/gma500/mdfld_device.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/mdfld_device.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/mdfld_device.c b/drivers/gpu/drm/gma500/mdfld_device.c index b718efccdcf2..be9cf6b1e3b3 100644 --- a/drivers/gpu/drm/gma500/mdfld_device.c +++ b/drivers/gpu/drm/gma500/mdfld_device.c @@ -6,6 +6,7 @@ **************************************************************************/ #include <linux/delay.h> +#include <linux/gpio/machine.h> #include <asm/intel_scu_ipc.h> @@ -505,12 +506,31 @@ static const struct psb_offset mdfld_regmap[3] = { }, }; +/* + * The GPIO lines for resetting DSI pipe 0 and 2 are available in the + * PCI device 0000:00:0c.0 on the Medfield. + */ +static struct gpiod_lookup_table mdfld_dsi_pipe_gpio_table = { + .table = { + GPIO_LOOKUP("0000:00:0c.0", 128, "dsi-pipe0-reset", + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("0000:00:0c.0", 34, "dsi-pipe2-reset", + GPIO_ACTIVE_HIGH), + { }, + }, +}; + static int mdfld_chip_setup(struct drm_device *dev) { struct drm_psb_private *dev_priv = dev->dev_private; if (pci_enable_msi(dev->pdev)) dev_warn(dev->dev, "Enabling MSI failed!\n"); dev_priv->regmap = mdfld_regmap; + + /* Associate the GPIO lines with the DRM device */ + mdfld_dsi_pipe_gpio_table.dev_id = dev_name(dev->dev); + gpiod_add_lookup_table(&mdfld_dsi_pipe_gpio_table); + return mid_chip_setup(dev); } |