diff options
Diffstat (limited to 'drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c new file mode 100644 index 000000000000..edec7bfaa952 --- /dev/null +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c @@ -0,0 +1,258 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "mdp5_kms.h" + +#include "drm_crtc.h" +#include "drm_crtc_helper.h" + +struct mdp5_encoder { + struct drm_encoder base; + int intf; + enum mdp5_intf intf_id; + bool enabled; + uint32_t bsc; +}; +#define to_mdp5_encoder(x) container_of(x, struct mdp5_encoder, base) + +static struct mdp5_kms *get_kms(struct drm_encoder *encoder) +{ + struct msm_drm_private *priv = encoder->dev->dev_private; + return to_mdp5_kms(to_mdp_kms(priv->kms)); +} + +#ifdef CONFIG_MSM_BUS_SCALING +#include <mach/board.h> +#include <mach/msm_bus.h> +#include <mach/msm_bus_board.h> +#define MDP_BUS_VECTOR_ENTRY(ab_val, ib_val) \ + { \ + .src = MSM_BUS_MASTER_MDP_PORT0, \ + .dst = MSM_BUS_SLAVE_EBI_CH0, \ + .ab = (ab_val), \ + .ib = (ib_val), \ + } + +static struct msm_bus_vectors mdp_bus_vectors[] = { + MDP_BUS_VECTOR_ENTRY(0, 0), + MDP_BUS_VECTOR_ENTRY(2000000000, 2000000000), +}; +static struct msm_bus_paths mdp_bus_usecases[] = { { + .num_paths = 1, + .vectors = &mdp_bus_vectors[0], +}, { + .num_paths = 1, + .vectors = &mdp_bus_vectors[1], +} }; +static struct msm_bus_scale_pdata mdp_bus_scale_table = { + .usecase = mdp_bus_usecases, + .num_usecases = ARRAY_SIZE(mdp_bus_usecases), + .name = "mdss_mdp", +}; + +static void bs_init(struct mdp5_encoder *mdp5_encoder) +{ + mdp5_encoder->bsc = msm_bus_scale_register_client( + &mdp_bus_scale_table); + DBG("bus scale client: %08x", mdp5_encoder->bsc); +} + +static void bs_fini(struct mdp5_encoder *mdp5_encoder) +{ + if (mdp5_encoder->bsc) { + msm_bus_scale_unregister_client(mdp5_encoder->bsc); + mdp5_encoder->bsc = 0; + } +} + +static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) +{ + if (mdp5_encoder->bsc) { + DBG("set bus scaling: %d", idx); + /* HACK: scaling down, and then immediately back up + * seems to leave things broken (underflow).. so + * never disable: + */ + idx = 1; + msm_bus_scale_client_update_request(mdp5_encoder->bsc, idx); + } +} +#else +static void bs_init(struct mdp5_encoder *mdp5_encoder) {} +static void bs_fini(struct mdp5_encoder *mdp5_encoder) {} +static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) {} +#endif + +static void mdp5_encoder_destroy(struct drm_encoder *encoder) +{ + struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); + bs_fini(mdp5_encoder); + drm_encoder_cleanup(encoder); + kfree(mdp5_encoder); +} + +static const struct drm_encoder_funcs mdp5_encoder_funcs = { + .destroy = mdp5_encoder_destroy, +}; + +static void mdp5_encoder_dpms(struct drm_encoder *encoder, int mode) +{ + struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); + struct mdp5_kms *mdp5_kms = get_kms(encoder); + int intf = mdp5_encoder->intf; + bool enabled = (mode == DRM_MODE_DPMS_ON); + + DBG("mode=%d", mode); + + if (enabled == mdp5_encoder->enabled) + return; + + if (enabled) { + bs_set(mdp5_encoder, 1); + mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intf), 1); + } else { + mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intf), 0); + bs_set(mdp5_encoder, 0); + } + + mdp5_encoder->enabled = enabled; +} + +static bool mdp5_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void mdp5_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); + struct mdp5_kms *mdp5_kms = get_kms(encoder); + int intf = mdp5_encoder->intf; + uint32_t dtv_hsync_skew, vsync_period, vsync_len, ctrl_pol; + uint32_t display_v_start, display_v_end; + uint32_t hsync_start_x, hsync_end_x; + uint32_t format; + + mode = adjusted_mode; + + DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", + mode->base.id, mode->name, + mode->vrefresh, mode->clock, + mode->hdisplay, mode->hsync_start, + mode->hsync_end, mode->htotal, + mode->vdisplay, mode->vsync_start, + mode->vsync_end, mode->vtotal, + mode->type, mode->flags); + + ctrl_pol = 0; + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW; + /* probably need to get DATA_EN polarity from panel.. */ + + dtv_hsync_skew = 0; /* get this from panel? */ + format = 0x213f; /* get this from panel? */ + + hsync_start_x = (mode->htotal - mode->hsync_start); + hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1; + + vsync_period = mode->vtotal * mode->htotal; + vsync_len = (mode->vsync_end - mode->vsync_start) * mode->htotal; + display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + dtv_hsync_skew; + display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + dtv_hsync_skew - 1; + + mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_CTL(intf), + MDP5_INTF_HSYNC_CTL_PULSEW(mode->hsync_end - mode->hsync_start) | + MDP5_INTF_HSYNC_CTL_PERIOD(mode->htotal)); + mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_PERIOD_F0(intf), vsync_period); + mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_LEN_F0(intf), vsync_len); + mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_HCTL(intf), + MDP5_INTF_DISPLAY_HCTL_START(hsync_start_x) | + MDP5_INTF_DISPLAY_HCTL_END(hsync_end_x)); + mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VSTART_F0(intf), display_v_start); + mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VEND_F0(intf), display_v_end); + mdp5_write(mdp5_kms, REG_MDP5_INTF_BORDER_COLOR(intf), 0); + mdp5_write(mdp5_kms, REG_MDP5_INTF_UNDERFLOW_COLOR(intf), 0xff); + mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_SKEW(intf), dtv_hsync_skew); + mdp5_write(mdp5_kms, REG_MDP5_INTF_POLARITY_CTL(intf), ctrl_pol); + mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_HCTL(intf), + MDP5_INTF_ACTIVE_HCTL_START(0) | + MDP5_INTF_ACTIVE_HCTL_END(0)); + mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VSTART_F0(intf), 0); + mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VEND_F0(intf), 0); + mdp5_write(mdp5_kms, REG_MDP5_INTF_PANEL_FORMAT(intf), format); + mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(intf), 0x3); /* frame+line? */ +} + +static void mdp5_encoder_prepare(struct drm_encoder *encoder) +{ + mdp5_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); +} + +static void mdp5_encoder_commit(struct drm_encoder *encoder) +{ + struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); + mdp5_crtc_set_intf(encoder->crtc, mdp5_encoder->intf, + mdp5_encoder->intf_id); + mdp5_encoder_dpms(encoder, DRM_MODE_DPMS_ON); +} + +static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = { + .dpms = mdp5_encoder_dpms, + .mode_fixup = mdp5_encoder_mode_fixup, + .mode_set = mdp5_encoder_mode_set, + .prepare = mdp5_encoder_prepare, + .commit = mdp5_encoder_commit, +}; + +/* initialize encoder */ +struct drm_encoder *mdp5_encoder_init(struct drm_device *dev, int intf, + enum mdp5_intf intf_id) +{ + struct drm_encoder *encoder = NULL; + struct mdp5_encoder *mdp5_encoder; + int ret; + + mdp5_encoder = kzalloc(sizeof(*mdp5_encoder), GFP_KERNEL); + if (!mdp5_encoder) { + ret = -ENOMEM; + goto fail; + } + + mdp5_encoder->intf = intf; + mdp5_encoder->intf_id = intf_id; + encoder = &mdp5_encoder->base; + + drm_encoder_init(dev, encoder, &mdp5_encoder_funcs, + DRM_MODE_ENCODER_TMDS); + drm_encoder_helper_add(encoder, &mdp5_encoder_helper_funcs); + + bs_init(mdp5_encoder); + + return encoder; + +fail: + if (encoder) + mdp5_encoder_destroy(encoder); + + return ERR_PTR(ret); +} |