#include "sun4i_crtc.h"
#include "sun4i_dotclock.h"
#include "sun4i_drv.h"
+#include "sun4i_lvds.h"
#include "sun4i_rgb.h"
#include "sun4i_tcon.h"
#include "sunxi_engine.h"
+static struct drm_connector *sun4i_tcon_get_connector(const struct drm_encoder *encoder)
+{
+ struct drm_connector *connector;
+ struct drm_connector_list_iter iter;
+
+ drm_connector_list_iter_begin(encoder->dev, &iter);
+ drm_for_each_connector_iter(connector, &iter)
+ if (connector->encoder == encoder) {
+ drm_connector_list_iter_end(&iter);
+ return connector;
+ }
+ drm_connector_list_iter_end(&iter);
+
+ return NULL;
+}
+
+static int sun4i_tcon_get_pixel_depth(const struct drm_encoder *encoder)
+{
+ struct drm_connector *connector;
+ struct drm_display_info *info;
+
+ connector = sun4i_tcon_get_connector(encoder);
+ if (!connector)
+ return -EINVAL;
+
+ info = &connector->display_info;
+ if (info->num_bus_formats != 1)
+ return -EINVAL;
+
+ switch (info->bus_formats[0]) {
+ case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
+ return 18;
+
+ case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
+ case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
+ return 24;
+ }
+
+ return -EINVAL;
+}
+
static void sun4i_tcon_channel_set_status(struct sun4i_tcon *tcon, int channel,
bool enabled)
{
switch (channel) {
case 0:
+ WARN_ON(!tcon->quirks->has_channel_0);
regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
SUN4I_TCON0_CTL_TCON_ENABLE,
enabled ? SUN4I_TCON0_CTL_TCON_ENABLE : 0);
clk_disable_unprepare(clk);
}
+static void sun4i_tcon_lvds_set_status(struct sun4i_tcon *tcon,
+ const struct drm_encoder *encoder,
+ bool enabled)
+{
+ if (enabled) {
+ u8 val;
+
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_IF_REG,
+ SUN4I_TCON0_LVDS_IF_EN,
+ SUN4I_TCON0_LVDS_IF_EN);
+
+ /*
+ * As their name suggest, these values only apply to the A31
+ * and later SoCs. We'll have to rework this when merging
+ * support for the older SoCs.
+ */
+ regmap_write(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
+ SUN6I_TCON0_LVDS_ANA0_C(2) |
+ SUN6I_TCON0_LVDS_ANA0_V(3) |
+ SUN6I_TCON0_LVDS_ANA0_PD(2) |
+ SUN6I_TCON0_LVDS_ANA0_EN_LDO);
+ udelay(2);
+
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
+ SUN6I_TCON0_LVDS_ANA0_EN_MB,
+ SUN6I_TCON0_LVDS_ANA0_EN_MB);
+ udelay(2);
+
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
+ SUN6I_TCON0_LVDS_ANA0_EN_DRVC,
+ SUN6I_TCON0_LVDS_ANA0_EN_DRVC);
+
+ if (sun4i_tcon_get_pixel_depth(encoder) == 18)
+ val = 7;
+ else
+ val = 0xf;
+
+ regmap_write_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
+ SUN6I_TCON0_LVDS_ANA0_EN_DRVD(0xf),
+ SUN6I_TCON0_LVDS_ANA0_EN_DRVD(val));
+ } else {
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_IF_REG,
+ SUN4I_TCON0_LVDS_IF_EN, 0);
+ }
+}
+
void sun4i_tcon_set_status(struct sun4i_tcon *tcon,
const struct drm_encoder *encoder,
bool enabled)
{
+ bool is_lvds = false;
int channel;
switch (encoder->encoder_type) {
+ case DRM_MODE_ENCODER_LVDS:
+ is_lvds = true;
+ /* Fallthrough */
case DRM_MODE_ENCODER_NONE:
channel = 0;
break;
return;
}
+ if (is_lvds && !enabled)
+ sun4i_tcon_lvds_set_status(tcon, encoder, false);
+
regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
SUN4I_TCON_GCTL_TCON_ENABLE,
enabled ? SUN4I_TCON_GCTL_TCON_ENABLE : 0);
+ if (is_lvds && enabled)
+ sun4i_tcon_lvds_set_status(tcon, encoder, true);
+
sun4i_tcon_channel_set_status(tcon, channel, enabled);
}
SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
}
+static void sun4i_tcon0_mode_set_lvds(struct sun4i_tcon *tcon,
+ const struct drm_encoder *encoder,
+ const struct drm_display_mode *mode)
+{
+ unsigned int bp;
+ u8 clk_delay;
+ u32 reg, val = 0;
+
+ WARN_ON(!tcon->quirks->has_channel_0);
+
+ tcon->dclk_min_div = 7;
+ tcon->dclk_max_div = 7;
+ sun4i_tcon0_mode_set_common(tcon, mode);
+
+ /* Adjust clock delay */
+ clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+ SUN4I_TCON0_CTL_CLK_DELAY_MASK,
+ SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
+
+ /*
+ * This is called a backporch in the register documentation,
+ * but it really is the back porch + hsync
+ */
+ bp = mode->crtc_htotal - mode->crtc_hsync_start;
+ DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
+ mode->crtc_htotal, bp);
+
+ /* Set horizontal display timings */
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC1_REG,
+ SUN4I_TCON0_BASIC1_H_TOTAL(mode->htotal) |
+ SUN4I_TCON0_BASIC1_H_BACKPORCH(bp));
+
+ /*
+ * This is called a backporch in the register documentation,
+ * but it really is the back porch + hsync
+ */
+ bp = mode->crtc_vtotal - mode->crtc_vsync_start;
+ DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
+ mode->crtc_vtotal, bp);
+
+ /* Set vertical display timings */
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC2_REG,
+ SUN4I_TCON0_BASIC2_V_TOTAL(mode->crtc_vtotal * 2) |
+ SUN4I_TCON0_BASIC2_V_BACKPORCH(bp));
+
+ reg = SUN4I_TCON0_LVDS_IF_CLK_SEL_TCON0 |
+ SUN4I_TCON0_LVDS_IF_DATA_POL_NORMAL |
+ SUN4I_TCON0_LVDS_IF_CLK_POL_NORMAL;
+ if (sun4i_tcon_get_pixel_depth(encoder) == 24)
+ reg |= SUN4I_TCON0_LVDS_IF_BITWIDTH_24BITS;
+ else
+ reg |= SUN4I_TCON0_LVDS_IF_BITWIDTH_18BITS;
+
+ regmap_write(tcon->regs, SUN4I_TCON0_LVDS_IF_REG, reg);
+
+ /* Setup the polarity of the various signals */
+ if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+ val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
+
+ if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+ val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
+
+ regmap_write(tcon->regs, SUN4I_TCON0_IO_POL_REG, val);
+
+ /* Map output pins to channel 0 */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+ SUN4I_TCON_GCTL_IOMAP_MASK,
+ SUN4I_TCON_GCTL_IOMAP_TCON0);
+}
+
static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
const struct drm_display_mode *mode)
{
u8 clk_delay;
u32 val = 0;
+ WARN_ON(!tcon->quirks->has_channel_0);
+
+ tcon->dclk_min_div = 6;
+ tcon->dclk_max_div = 127;
sun4i_tcon0_mode_set_common(tcon, mode);
/* Adjust clock delay */
SUN4I_TCON0_BASIC3_H_SYNC(hsync));
/* Setup the polarity of the various signals */
- if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+ if (mode->flags & DRM_MODE_FLAG_PHSYNC)
val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
- if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+ if (mode->flags & DRM_MODE_FLAG_PVSYNC)
val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
const struct drm_display_mode *mode)
{
switch (encoder->encoder_type) {
+ case DRM_MODE_ENCODER_LVDS:
+ sun4i_tcon0_mode_set_lvds(tcon, encoder, mode);
+ break;
case DRM_MODE_ENCODER_NONE:
sun4i_tcon0_mode_set_rgb(tcon, mode);
sun4i_tcon_set_mux(tcon, 0, encoder);
struct sun4i_tcon *tcon = private;
struct drm_device *drm = tcon->drm;
struct sun4i_crtc *scrtc = tcon->crtc;
+ struct sunxi_engine *engine = scrtc->engine;
unsigned int status;
regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
SUN4I_TCON_GINT0_VBLANK_INT(1),
0);
+ if (engine->ops->vblank_quirk)
+ engine->ops->vblank_quirk(engine);
+
return IRQ_HANDLED;
}
}
clk_prepare_enable(tcon->clk);
- tcon->sclk0 = devm_clk_get(dev, "tcon-ch0");
- if (IS_ERR(tcon->sclk0)) {
- dev_err(dev, "Couldn't get the TCON channel 0 clock\n");
- return PTR_ERR(tcon->sclk0);
+ if (tcon->quirks->has_channel_0) {
+ tcon->sclk0 = devm_clk_get(dev, "tcon-ch0");
+ if (IS_ERR(tcon->sclk0)) {
+ dev_err(dev, "Couldn't get the TCON channel 0 clock\n");
+ return PTR_ERR(tcon->sclk0);
+ }
}
if (tcon->quirks->has_channel_1) {
struct drm_device *drm = data;
struct sun4i_drv *drv = drm->dev_private;
struct sunxi_engine *engine;
+ struct device_node *remote;
struct sun4i_tcon *tcon;
+ bool has_lvds_rst, has_lvds_alt, can_lvds;
int ret;
engine = sun4i_tcon_find_engine(drv, dev->of_node);
return ret;
}
+ /*
+ * This can only be made optional since we've had DT nodes
+ * without the LVDS reset properties.
+ *
+ * If the property is missing, just disable LVDS, and print a
+ * warning.
+ */
+ tcon->lvds_rst = devm_reset_control_get_optional(dev, "lvds");
+ if (IS_ERR(tcon->lvds_rst)) {
+ dev_err(dev, "Couldn't get our reset line\n");
+ return PTR_ERR(tcon->lvds_rst);
+ } else if (tcon->lvds_rst) {
+ has_lvds_rst = true;
+ reset_control_reset(tcon->lvds_rst);
+ } else {
+ has_lvds_rst = false;
+ }
+
+ /*
+ * This can only be made optional since we've had DT nodes
+ * without the LVDS reset properties.
+ *
+ * If the property is missing, just disable LVDS, and print a
+ * warning.
+ */
+ if (tcon->quirks->has_lvds_alt) {
+ tcon->lvds_pll = devm_clk_get(dev, "lvds-alt");
+ if (IS_ERR(tcon->lvds_pll)) {
+ if (PTR_ERR(tcon->lvds_pll) == -ENOENT) {
+ has_lvds_alt = false;
+ } else {
+ dev_err(dev, "Couldn't get the LVDS PLL\n");
+ return PTR_ERR(tcon->lvds_pll);
+ }
+ } else {
+ has_lvds_alt = true;
+ }
+ }
+
+ if (!has_lvds_rst || (tcon->quirks->has_lvds_alt && !has_lvds_alt)) {
+ dev_warn(dev,
+ "Missing LVDS properties, Please upgrade your DT\n");
+ dev_warn(dev, "LVDS output disabled\n");
+ can_lvds = false;
+ } else {
+ can_lvds = true;
+ }
+
ret = sun4i_tcon_init_clocks(dev, tcon);
if (ret) {
dev_err(dev, "Couldn't init our TCON clocks\n");
goto err_free_clocks;
}
- ret = sun4i_dclk_create(dev, tcon);
- if (ret) {
- dev_err(dev, "Couldn't create our TCON dot clock\n");
- goto err_free_clocks;
+ if (tcon->quirks->has_channel_0) {
+ ret = sun4i_dclk_create(dev, tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't create our TCON dot clock\n");
+ goto err_free_clocks;
+ }
}
ret = sun4i_tcon_init_irq(dev, tcon);
goto err_free_dotclock;
}
- ret = sun4i_rgb_init(drm, tcon);
+ /*
+ * If we have an LVDS panel connected to the TCON, we should
+ * just probe the LVDS connector. Otherwise, just probe RGB as
+ * we used to.
+ */
+ remote = of_graph_get_remote_node(dev->of_node, 1, 0);
+ if (of_device_is_compatible(remote, "panel-lvds"))
+ if (can_lvds)
+ ret = sun4i_lvds_init(drm, tcon);
+ else
+ ret = -EINVAL;
+ else
+ ret = sun4i_rgb_init(drm, tcon);
+ of_node_put(remote);
+
if (ret < 0)
goto err_free_dotclock;
return 0;
err_free_dotclock:
- sun4i_dclk_free(tcon);
+ if (tcon->quirks->has_channel_0)
+ sun4i_dclk_free(tcon);
err_free_clocks:
sun4i_tcon_free_clocks(tcon);
err_assert_reset:
struct sun4i_tcon *tcon = dev_get_drvdata(dev);
list_del(&tcon->list);
- sun4i_dclk_free(tcon);
+ if (tcon->quirks->has_channel_0)
+ sun4i_dclk_free(tcon);
sun4i_tcon_free_clocks(tcon);
}
}
static const struct sun4i_tcon_quirks sun4i_a10_quirks = {
+ .has_channel_0 = true,
.has_channel_1 = true,
.set_mux = sun4i_a10_tcon_set_mux,
};
static const struct sun4i_tcon_quirks sun5i_a13_quirks = {
+ .has_channel_0 = true,
.has_channel_1 = true,
.set_mux = sun5i_a13_tcon_set_mux,
};
static const struct sun4i_tcon_quirks sun6i_a31_quirks = {
+ .has_channel_0 = true,
.has_channel_1 = true,
+ .has_lvds_alt = true,
.needs_de_be_mux = true,
.set_mux = sun6i_tcon_set_mux,
};
static const struct sun4i_tcon_quirks sun6i_a31s_quirks = {
+ .has_channel_0 = true,
.has_channel_1 = true,
.needs_de_be_mux = true,
};
static const struct sun4i_tcon_quirks sun7i_a20_quirks = {
+ .has_channel_0 = true,
.has_channel_1 = true,
/* Same display pipeline structure as A10 */
.set_mux = sun4i_a10_tcon_set_mux,
};
static const struct sun4i_tcon_quirks sun8i_a33_quirks = {
- /* nothing is supported */
+ .has_channel_0 = true,
+ .has_lvds_alt = true,
+};
+
+static const struct sun4i_tcon_quirks sun8i_a83t_lcd_quirks = {
+ .has_channel_0 = true,
+};
+
+static const struct sun4i_tcon_quirks sun8i_a83t_tv_quirks = {
+ .has_channel_1 = true,
};
static const struct sun4i_tcon_quirks sun8i_v3s_quirks = {
- /* nothing is supported */
+ .has_channel_0 = true,
};
-static const struct of_device_id sun4i_tcon_of_table[] = {
+/* sun4i_drv uses this list to check if a device node is a TCON */
+const struct of_device_id sun4i_tcon_of_table[] = {
{ .compatible = "allwinner,sun4i-a10-tcon", .data = &sun4i_a10_quirks },
{ .compatible = "allwinner,sun5i-a13-tcon", .data = &sun5i_a13_quirks },
{ .compatible = "allwinner,sun6i-a31-tcon", .data = &sun6i_a31_quirks },
{ .compatible = "allwinner,sun6i-a31s-tcon", .data = &sun6i_a31s_quirks },
{ .compatible = "allwinner,sun7i-a20-tcon", .data = &sun7i_a20_quirks },
{ .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks },
+ { .compatible = "allwinner,sun8i-a83t-tcon-lcd", .data = &sun8i_a83t_lcd_quirks },
+ { .compatible = "allwinner,sun8i-a83t-tcon-tv", .data = &sun8i_a83t_tv_quirks },
{ .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks },
{ }
};
MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);
+EXPORT_SYMBOL(sun4i_tcon_of_table);
static struct platform_driver sun4i_tcon_platform_driver = {
.probe = sun4i_tcon_probe,
git.samba.org / sfrench / cifs-2.6.git / blobdiff