per LVDS encoder. The functional clocks must be named "du.x" with "x"
being the channel numerical index. The LVDS clocks must be named
"lvds.x" with "x" being the LVDS encoder numerical index.
+ - In addition to the functional and encoder clocks, all DU versions also
+ support externally supplied pixel clocks. Those clocks are optional.
+ When supplied they must be named "dclkin.x" with "x" being the input
+ clock numerical index.
Required nodes:
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
- if (mode->flags & DRM_MODE_FLAG_INTERLACE)
- return MODE_NO_INTERLACE;
-
return MODE_OK;
}
if (ret < 0)
return ret;
+ ret = clk_prepare_enable(rcrtc->extclock);
+ if (ret < 0)
+ goto error_clock;
+
ret = rcar_du_group_get(rcrtc->group);
if (ret < 0)
- clk_disable_unprepare(rcrtc->clock);
+ goto error_group;
+
+ return 0;
+error_group:
+ clk_disable_unprepare(rcrtc->extclock);
+error_clock:
+ clk_disable_unprepare(rcrtc->clock);
return ret;
}
static void rcar_du_crtc_put(struct rcar_du_crtc *rcrtc)
{
rcar_du_group_put(rcrtc->group);
+
+ clk_disable_unprepare(rcrtc->extclock);
clk_disable_unprepare(rcrtc->clock);
}
static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
{
const struct drm_display_mode *mode = &rcrtc->crtc.mode;
+ unsigned long mode_clock = mode->clock * 1000;
unsigned long clk;
u32 value;
+ u32 escr;
u32 div;
- /* Dot clock */
+ /* Compute the clock divisor and select the internal or external dot
+ * clock based on the requested frequency.
+ */
clk = clk_get_rate(rcrtc->clock);
- div = DIV_ROUND_CLOSEST(clk, mode->clock * 1000);
+ div = DIV_ROUND_CLOSEST(clk, mode_clock);
div = clamp(div, 1U, 64U) - 1;
+ escr = div | ESCR_DCLKSEL_CLKS;
+
+ if (rcrtc->extclock) {
+ unsigned long extclk;
+ unsigned long extrate;
+ unsigned long rate;
+ u32 extdiv;
+
+ extclk = clk_get_rate(rcrtc->extclock);
+ extdiv = DIV_ROUND_CLOSEST(extclk, mode_clock);
+ extdiv = clamp(extdiv, 1U, 64U) - 1;
+
+ rate = clk / (div + 1);
+ extrate = extclk / (extdiv + 1);
+
+ if (abs((long)extrate - (long)mode_clock) <
+ abs((long)rate - (long)mode_clock)) {
+ dev_dbg(rcrtc->group->dev->dev,
+ "crtc%u: using external clock\n", rcrtc->index);
+ escr = extdiv | ESCR_DCLKSEL_DCLKIN;
+ }
+ }
rcar_du_group_write(rcrtc->group, rcrtc->index % 2 ? ESCR2 : ESCR,
- ESCR_DCLKSEL_CLKS | div);
+ escr);
rcar_du_group_write(rcrtc->group, rcrtc->index % 2 ? OTAR2 : OTAR, 0);
/* Signal polarities */
value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : DSMR_VSL)
| ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : DSMR_HSL)
- | DSMR_DIPM_DE;
+ | DSMR_DIPM_DE | DSMR_CSPM;
rcar_du_crtc_write(rcrtc, DSMR, value);
/* Display timings */
mode->hsync_start - 1);
rcar_du_crtc_write(rcrtc, HCR, mode->htotal - 1);
- rcar_du_crtc_write(rcrtc, VDSR, mode->vtotal - mode->vsync_end - 2);
- rcar_du_crtc_write(rcrtc, VDER, mode->vtotal - mode->vsync_end +
- mode->vdisplay - 2);
- rcar_du_crtc_write(rcrtc, VSPR, mode->vtotal - mode->vsync_end +
- mode->vsync_start - 1);
- rcar_du_crtc_write(rcrtc, VCR, mode->vtotal - 1);
+ rcar_du_crtc_write(rcrtc, VDSR, mode->crtc_vtotal -
+ mode->crtc_vsync_end - 2);
+ rcar_du_crtc_write(rcrtc, VDER, mode->crtc_vtotal -
+ mode->crtc_vsync_end +
+ mode->crtc_vdisplay - 2);
+ rcar_du_crtc_write(rcrtc, VSPR, mode->crtc_vtotal -
+ mode->crtc_vsync_end +
+ mode->crtc_vsync_start - 1);
+ rcar_du_crtc_write(rcrtc, VCR, mode->crtc_vtotal - 1);
rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start);
rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay);
*/
rcrtc->outputs |= BIT(output);
- /* Store RGB routing to DPAD0 for R8A7790. */
- if (rcar_du_has(rcdu, RCAR_DU_FEATURE_DEFR8) &&
- output == RCAR_DU_OUTPUT_DPAD0)
+ /* Store RGB routing to DPAD0, the hardware will be configured when
+ * starting the CRTC.
+ */
+ if (output == RCAR_DU_OUTPUT_DPAD0)
rcdu->dpad0_source = rcrtc->index;
}
static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
{
struct drm_crtc *crtc = &rcrtc->crtc;
+ bool interlaced;
unsigned int i;
if (rcrtc->started)
* sync mode (with the HSYNC and VSYNC signals configured as outputs and
* actively driven).
*/
- rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_MASTER);
+ interlaced = rcrtc->crtc.mode.flags & DRM_MODE_FLAG_INTERLACE;
+ rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK | DSYSR_SCM_MASK,
+ (interlaced ? DSYSR_SCM_INT_VIDEO : 0) |
+ DSYSR_TVM_MASTER);
rcar_du_group_start_stop(rcrtc->group, true);
{
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ if (mode != DRM_MODE_DPMS_ON)
+ mode = DRM_MODE_DPMS_OFF;
+
if (rcrtc->dpms == mode)
return;
status = rcar_du_crtc_read(rcrtc, DSSR);
rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK);
- if (status & DSSR_VBK) {
+ if (status & DSSR_FRM) {
drm_handle_vblank(rcrtc->crtc.dev, rcrtc->index);
rcar_du_crtc_finish_page_flip(rcrtc);
ret = IRQ_HANDLED;
struct rcar_du_crtc *rcrtc = &rcdu->crtcs[index];
struct drm_crtc *crtc = &rcrtc->crtc;
unsigned int irqflags;
- char clk_name[5];
+ struct clk *clk;
+ char clk_name[9];
char *name;
int irq;
int ret;
- /* Get the CRTC clock. */
+ /* Get the CRTC clock and the optional external clock. */
if (rcar_du_has(rcdu, RCAR_DU_FEATURE_CRTC_IRQ_CLOCK)) {
sprintf(clk_name, "du.%u", index);
name = clk_name;
return PTR_ERR(rcrtc->clock);
}
+ sprintf(clk_name, "dclkin.%u", index);
+ clk = devm_clk_get(rcdu->dev, clk_name);
+ if (!IS_ERR(clk)) {
+ rcrtc->extclock = clk;
+ } else if (PTR_ERR(rcrtc->clock) == -EPROBE_DEFER) {
+ dev_info(rcdu->dev, "can't get external clock %u\n", index);
+ return -EPROBE_DEFER;
+ }
+
rcrtc->group = rgrp;
rcrtc->mmio_offset = mmio_offsets[index];
rcrtc->index = index;
struct drm_crtc crtc;
struct clk *clock;
+ struct clk *extclock;
unsigned int mmio_offset;
unsigned int index;
bool started;
};
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
- .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_DEFR8,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
+ | RCAR_DU_FEATURE_EXT_CTRL_REGS,
.quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES,
.num_crtcs = 3,
.routes = {
};
static const struct rcar_du_device_info rcar_du_r8a7791_info = {
- .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_DEFR8,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
+ | RCAR_DU_FEATURE_EXT_CTRL_REGS,
.num_crtcs = 2,
.routes = {
/* R8A7791 has one RGB output, one LVDS output and one
struct rcar_du_lvdsenc;
#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */
-#define RCAR_DU_FEATURE_DEFR8 (1 << 1) /* Has DEFR8 register */
+#define RCAR_DU_FEATURE_EXT_CTRL_REGS (1 << 1) /* Has extended control registers */
#define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */
#define RCAR_DU_QUIRK_LVDS_LANES (1 << 1) /* LVDS lanes 1 and 3 inverted */
{
struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
+ if (mode != DRM_MODE_DPMS_ON)
+ mode = DRM_MODE_DPMS_OFF;
+
if (renc->lvds)
rcar_du_lvdsenc_dpms(renc->lvds, encoder->crtc, mode);
}
}
if (type == RCAR_DU_ENCODER_HDMI) {
- if (renc->lvds) {
- dev_err(rcdu->dev,
- "Chaining LVDS and HDMI encoders not supported\n");
- return -EINVAL;
- }
-
ret = rcar_du_hdmienc_init(rcdu, renc, enc_node);
if (ret < 0)
- return ret;
+ goto done;
} else {
ret = drm_encoder_init(rcdu->ddev, encoder, &encoder_funcs,
encoder_type);
if (ret < 0)
- return ret;
+ goto done;
drm_encoder_helper_add(encoder, &encoder_helper_funcs);
}
switch (encoder_type) {
case DRM_MODE_ENCODER_LVDS:
- return rcar_du_lvds_connector_init(rcdu, renc, con_node);
+ ret = rcar_du_lvds_connector_init(rcdu, renc, con_node);
+ break;
case DRM_MODE_ENCODER_DAC:
- return rcar_du_vga_connector_init(rcdu, renc);
+ ret = rcar_du_vga_connector_init(rcdu, renc);
+ break;
case DRM_MODE_ENCODER_TMDS:
- return rcar_du_hdmi_connector_init(rcdu, renc);
+ ret = rcar_du_hdmi_connector_init(rcdu, renc);
+ break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ break;
}
+
+done:
+ if (ret < 0) {
+ if (encoder->name)
+ encoder->funcs->destroy(encoder);
+ devm_kfree(rcdu->dev, renc);
+ }
+
+ return ret;
}
{
u32 defr8 = DEFR8_CODE | DEFR8_DEFE8;
- if (!rcar_du_has(rgrp->dev, RCAR_DU_FEATURE_DEFR8))
- return;
-
/* The DEFR8 register for the first group also controls RGB output
* routing to DPAD0
*/
rcar_du_group_write(rgrp, DEFR4, DEFR4_CODE);
rcar_du_group_write(rgrp, DEFR5, DEFR5_CODE | DEFR5_DEFE5);
- rcar_du_group_setup_defr8(rgrp);
+ if (rcar_du_has(rgrp->dev, RCAR_DU_FEATURE_EXT_CTRL_REGS)) {
+ rcar_du_group_setup_defr8(rgrp);
+
+ /* Configure input dot clock routing. We currently hardcode the
+ * configuration to routing DOTCLKINn to DUn.
+ */
+ rcar_du_group_write(rgrp, DIDSR, DIDSR_CODE |
+ DIDSR_LCDS_DCLKIN(2) |
+ DIDSR_LCDS_DCLKIN(1) |
+ DIDSR_LCDS_DCLKIN(0) |
+ DIDSR_PDCS_CLK(2, 0) |
+ DIDSR_PDCS_CLK(1, 0) |
+ DIDSR_PDCS_CLK(0, 0));
+ }
/* Use DS1PR and DS2PR to configure planes priorities and connects the
* superposition 0 to DU0 pins. DU1 pins will be configured dynamically.
{
int ret;
+ if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_EXT_CTRL_REGS))
+ return 0;
+
/* RGB output routing to DPAD0 is configured in the DEFR8 register of
* the first group. As this function can be called with the DU0 and DU1
* CRTCs disabled, we need to enable the first group clock before
connector = &rcon->connector;
connector->display_info.width_mm = 0;
connector->display_info.height_mm = 0;
+ connector->interlace_allowed = true;
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmienc.h"
+#include "rcar_du_lvdsenc.h"
struct rcar_du_hdmienc {
struct rcar_du_encoder *renc;
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
+ if (mode != DRM_MODE_DPMS_ON)
+ mode = DRM_MODE_DPMS_OFF;
+
if (hdmienc->dpms == mode)
return;
+ if (mode == DRM_MODE_DPMS_ON && hdmienc->renc->lvds)
+ rcar_du_lvdsenc_dpms(hdmienc->renc->lvds, encoder->crtc, mode);
+
if (sfuncs->dpms)
sfuncs->dpms(encoder, mode);
+ if (mode != DRM_MODE_DPMS_ON && hdmienc->renc->lvds)
+ rcar_du_lvdsenc_dpms(hdmienc->renc->lvds, encoder->crtc, mode);
+
hdmienc->dpms = mode;
}
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
+ struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
+ /* The internal LVDS encoder has a clock frequency operating range of
+ * 30MHz to 150MHz. Clamp the clock accordingly.
+ */
+ if (hdmienc->renc->lvds)
+ adjusted_mode->clock = clamp(adjusted_mode->clock,
+ 30000, 150000);
+
if (sfuncs->mode_fixup == NULL)
return true;
/* Process the output pipeline. */
ret = rcar_du_encoders_init_one(rcdu, output, &ep);
if (ret < 0) {
- of_node_put(ep_node);
- return ret;
+ if (ret == -EPROBE_DEFER) {
+ of_node_put(ep_node);
+ return ret;
+ }
+
+ dev_info(rcdu->dev,
+ "encoder initialization failed, skipping\n");
+ continue;
}
num_encoders += ret;
if (ret < 0)
return ret;
+ if (ret == 0) {
+ dev_err(rcdu->dev, "error: no encoder could be initialized\n");
+ return -EINVAL;
+ }
+
num_encoders = ret;
/* Set the possible CRTCs and possible clones. There's always at least
{
struct rcar_du_group *rgrp = plane->group;
unsigned int index = plane->hwindex;
+ bool interlaced;
u32 mwr;
- /* Memory pitch (expressed in pixels) */
+ interlaced = plane->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE;
+
+ /* Memory pitch (expressed in pixels). Must be doubled for interlaced
+ * operation with 32bpp formats.
+ */
if (plane->format->planes == 2)
mwr = plane->pitch;
else
mwr = plane->pitch * 8 / plane->format->bpp;
+ if (interlaced && plane->format->bpp == 32)
+ mwr *= 2;
+
rcar_du_plane_write(rgrp, index, PnMWR, mwr);
/* The Y position is expressed in raster line units and must be doubled
* doubling the Y position is found in the R8A7779 datasheet, but the
* rule seems to apply there as well.
*
+ * Despite not being documented, doubling seem not to be needed when
+ * operating in interlaced mode.
+ *
* Similarly, for the second plane, NV12 and NV21 formats seem to
- * require a halved Y position value.
+ * require a halved Y position value, in both progressive and interlaced
+ * modes.
*/
rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
- (plane->format->bpp == 32 ? 2 : 1));
+ (!interlaced && plane->format->bpp == 32 ? 2 : 1));
rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
if (plane->format->planes == 2) {
index = (index + 1) % 8;
+ rcar_du_plane_write(rgrp, index, PnMWR, plane->pitch);
+
rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
(plane->format->bpp == 16 ? 2 : 1) / 2);
#define DSYSR_SCM_INT_NONE (0 << 4)
#define DSYSR_SCM_INT_SYNC (2 << 4)
#define DSYSR_SCM_INT_VIDEO (3 << 4)
+#define DSYSR_SCM_MASK (3 << 4)
#define DSMR 0x00004
#define DSMR_VSPM (1 << 28)
#define DIDSR_LCDS_LVDS0(n) (2 << (8 + (n) * 2))
#define DIDSR_LCDS_LVDS1(n) (3 << (8 + (n) * 2))
#define DIDSR_LCDS_MASK(n) (3 << (8 + (n) * 2))
-#define DIDSR_PCDS_CLK(n, clk) (clk << ((n) * 2))
-#define DIDSR_PCDS_MASK(n) (3 << ((n) * 2))
+#define DIDSR_PDCS_CLK(n, clk) (clk << ((n) * 2))
+#define DIDSR_PDCS_MASK(n) (3 << ((n) * 2))
/* -----------------------------------------------------------------------------
* Display Timing Generation Registers
connector = &rcon->connector;
connector->display_info.width_mm = 0;
connector->display_info.height_mm = 0;
+ connector->interlace_allowed = true;
ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_VGA);
projects / linux-drm-fsl-dcu.git / commitdiff