/* LCDC DRM driver, based on da8xx-fb */
#include <linux/component.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/suspend.h>
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
{
struct tilcdc_drm_private *priv = dev->dev_private;
+ tilcdc_crtc_dpms(priv->crtc, DRM_MODE_DPMS_OFF);
+
tilcdc_remove_external_encoders(dev);
drm_fbdev_cma_fini(priv->fbdev);
pm_runtime_disable(dev->dev);
- kfree(priv);
-
return 0;
}
+static size_t tilcdc_num_regs(void);
+
static int tilcdc_load(struct drm_device *dev, unsigned long flags)
{
struct platform_device *pdev = dev->platformdev;
u32 bpp = 0;
int ret;
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv) {
+ priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
+ if (priv)
+ priv->saved_register =
+ devm_kcalloc(dev->dev, tilcdc_num_regs(),
+ sizeof(*priv->saved_register), GFP_KERNEL);
+ if (!priv || !priv->saved_register) {
dev_err(dev->dev, "failed to allocate private data\n");
return -ENOMEM;
}
priv->wq = alloc_ordered_workqueue("tilcdc", 0);
if (!priv->wq) {
ret = -ENOMEM;
- goto fail_free_priv;
+ goto fail_unset_priv;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
goto fail_iounmap;
}
- priv->disp_clk = clk_get(dev->dev, "dpll_disp_ck");
- if (IS_ERR(priv->clk)) {
- dev_err(dev->dev, "failed to get display clock\n");
- ret = -ENODEV;
- goto fail_put_clk;
- }
-
#ifdef CONFIG_CPU_FREQ
priv->lcd_fck_rate = clk_get_rate(priv->clk);
priv->freq_transition.notifier_call = cpufreq_transition;
CPUFREQ_TRANSITION_NOTIFIER);
if (ret) {
dev_err(dev->dev, "failed to register cpufreq notifier\n");
- goto fail_put_disp_clk;
+ goto fail_put_clk;
}
#endif
DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock);
pm_runtime_enable(dev->dev);
- pm_runtime_irq_safe(dev->dev);
/* Determine LCD IP Version */
pm_runtime_get_sync(dev->dev);
#ifdef CONFIG_CPU_FREQ
cpufreq_unregister_notifier(&priv->freq_transition,
CPUFREQ_TRANSITION_NOTIFIER);
-fail_put_disp_clk:
- clk_put(priv->disp_clk);
-#endif
fail_put_clk:
+#endif
clk_put(priv->clk);
fail_iounmap:
flush_workqueue(priv->wq);
destroy_workqueue(priv->wq);
-fail_free_priv:
+fail_unset_priv:
dev->dev_private = NULL;
- kfree(priv);
- return ret;
-}
-static void tilcdc_preclose(struct drm_device *dev, struct drm_file *file)
-{
- struct tilcdc_drm_private *priv = dev->dev_private;
-
- tilcdc_crtc_cancel_page_flip(priv->crtc, file);
+ return ret;
}
static void tilcdc_lastclose(struct drm_device *dev)
struct tilcdc_drm_private *priv = dev->dev_private;
/* enable FIFO underflow irq: */
- if (priv->rev == 1)
+ if (priv->rev == 1) {
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_V1_UNDERFLOW_INT_ENA);
- else
- tilcdc_set(dev, LCDC_INT_ENABLE_SET_REG, LCDC_V2_UNDERFLOW_INT_ENA);
+ } else {
+ tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG,
+ LCDC_V2_UNDERFLOW_INT_ENA |
+ LCDC_V2_END_OF_FRAME0_INT_ENA |
+ LCDC_FRAME_DONE | LCDC_SYNC_LOST);
+ }
return 0;
}
LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA);
tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA);
} else {
- tilcdc_clear(dev, LCDC_INT_ENABLE_SET_REG,
+ tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG,
LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA |
- LCDC_V2_END_OF_FRAME0_INT_ENA | LCDC_V2_END_OF_FRAME1_INT_ENA |
- LCDC_FRAME_DONE);
+ LCDC_V2_END_OF_FRAME0_INT_ENA |
+ LCDC_FRAME_DONE | LCDC_SYNC_LOST);
}
-
-}
-
-static void enable_vblank(struct drm_device *dev, bool enable)
-{
- struct tilcdc_drm_private *priv = dev->dev_private;
- u32 reg, mask;
-
- if (priv->rev == 1) {
- reg = LCDC_DMA_CTRL_REG;
- mask = LCDC_V1_END_OF_FRAME_INT_ENA;
- } else {
- reg = LCDC_INT_ENABLE_SET_REG;
- mask = LCDC_V2_END_OF_FRAME0_INT_ENA |
- LCDC_V2_END_OF_FRAME1_INT_ENA | LCDC_FRAME_DONE;
- }
-
- if (enable)
- tilcdc_set(dev, reg, mask);
- else
- tilcdc_clear(dev, reg, mask);
}
static int tilcdc_enable_vblank(struct drm_device *dev, unsigned int pipe)
{
- enable_vblank(dev, true);
return 0;
}
static void tilcdc_disable_vblank(struct drm_device *dev, unsigned int pipe)
{
- enable_vblank(dev, false);
+ return;
}
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_PM_SLEEP)
/* new in revision 2: */
REG(2, false, LCDC_RAW_STAT_REG),
REG(2, false, LCDC_MASKED_STAT_REG),
- REG(2, false, LCDC_INT_ENABLE_SET_REG),
+ REG(2, true, LCDC_INT_ENABLE_SET_REG),
REG(2, false, LCDC_INT_ENABLE_CLR_REG),
REG(2, false, LCDC_END_OF_INT_IND_REG),
REG(2, true, LCDC_CLK_ENABLE_REG),
- REG(2, true, LCDC_INT_ENABLE_SET_REG),
#undef REG
};
+
+static size_t tilcdc_num_regs(void)
+{
+ return ARRAY_SIZE(registers);
+}
+#else
+static size_t tilcdc_num_regs(void)
+{
+ return 0;
+}
#endif
#ifdef CONFIG_DEBUG_FS
};
static struct drm_driver tilcdc_driver = {
- .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET,
+ .driver_features = (DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET |
+ DRIVER_PRIME),
.load = tilcdc_load,
.unload = tilcdc_unload,
- .preclose = tilcdc_preclose,
.lastclose = tilcdc_lastclose,
.set_busid = drm_platform_set_busid,
.irq_handler = tilcdc_irq,
.dumb_create = drm_gem_cma_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
.dumb_destroy = drm_gem_dumb_destroy,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = tilcdc_debugfs_init,
.debugfs_cleanup = tilcdc_debugfs_cleanup,
drm_kms_helper_poll_disable(ddev);
+ /* Select sleep pin state */
+ pinctrl_pm_select_sleep_state(dev);
+
+ if (pm_runtime_suspended(dev)) {
+ priv->ctx_valid = false;
+ return 0;
+ }
+
+ /* Disable the LCDC controller, to avoid locking up the PRCM */
+ tilcdc_crtc_dpms(priv->crtc, DRM_MODE_DPMS_OFF);
+
/* Save register state: */
for (i = 0; i < ARRAY_SIZE(registers); i++)
if (registers[i].save && (priv->rev >= registers[i].rev))
priv->saved_register[n++] = tilcdc_read(ddev, registers[i].reg);
+ priv->ctx_valid = true;
+
return 0;
}
struct tilcdc_drm_private *priv = ddev->dev_private;
unsigned i, n = 0;
- /* Restore register state: */
- for (i = 0; i < ARRAY_SIZE(registers); i++)
- if (registers[i].save && (priv->rev >= registers[i].rev))
- tilcdc_write(ddev, registers[i].reg, priv->saved_register[n++]);
+ /* Select default pin state */
+ pinctrl_pm_select_default_state(dev);
+
+ if (priv->ctx_valid == true) {
+ /* Restore register state: */
+ for (i = 0; i < ARRAY_SIZE(registers); i++)
+ if (registers[i].save &&
+ (priv->rev >= registers[i].rev))
+ tilcdc_write(ddev, registers[i].reg,
+ priv->saved_register[n++]);
+ }
drm_kms_helper_poll_enable(ddev);
projects / linux-2.6-block.git / blobdiff