--- /dev/null
+/*
+ * Copyright (C) 2014 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ * Author: Vinay Simha <vinaysimha@inforcecomputing.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 "mdp4_kms.h"
+
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+struct mdp4_lcdc_encoder {
+ struct drm_encoder base;
+ struct drm_panel *panel;
+ struct clk *lcdc_clk;
+ unsigned long int pixclock;
+ struct regulator *regs[3];
+ bool enabled;
+ uint32_t bsc;
+};
+#define to_mdp4_lcdc_encoder(x) container_of(x, struct mdp4_lcdc_encoder, base)
+
+static struct mdp4_kms *get_kms(struct drm_encoder *encoder)
+{
+ struct msm_drm_private *priv = encoder->dev->dev_private;
+ return to_mdp4_kms(to_mdp_kms(priv->kms));
+}
+
+#ifdef CONFIG_MSM_BUS_SCALING
+#include <mach/board.h>
+static void bs_init(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder)
+{
+ struct drm_device *dev = mdp4_lcdc_encoder->base.dev;
+ struct lcdc_platform_data *lcdc_pdata = mdp4_find_pdata("lvds.0");
+
+ if (!lcdc_pdata) {
+ dev_err(dev->dev, "could not find lvds pdata\n");
+ return;
+ }
+
+ if (lcdc_pdata->bus_scale_table) {
+ mdp4_lcdc_encoder->bsc = msm_bus_scale_register_client(
+ lcdc_pdata->bus_scale_table);
+ DBG("lvds : bus scale client: %08x", mdp4_lcdc_encoder->bsc);
+ }
+}
+
+static void bs_fini(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder)
+{
+ if (mdp4_lcdc_encoder->bsc) {
+ msm_bus_scale_unregister_client(mdp4_lcdc_encoder->bsc);
+ mdp4_lcdc_encoder->bsc = 0;
+ }
+}
+
+static void bs_set(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder, int idx)
+{
+ if (mdp4_lcdc_encoder->bsc) {
+ DBG("set bus scaling: %d", idx);
+ msm_bus_scale_client_update_request(mdp4_lcdc_encoder->bsc, idx);
+ }
+}
+#else
+static void bs_init(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder) {}
+static void bs_fini(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder) {}
+static void bs_set(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder, int idx) {}
+#endif
+
+static void mdp4_lcdc_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
+ to_mdp4_lcdc_encoder(encoder);
+ bs_fini(mdp4_lcdc_encoder);
+ drm_encoder_cleanup(encoder);
+ kfree(mdp4_lcdc_encoder);
+}
+
+static const struct drm_encoder_funcs mdp4_lcdc_encoder_funcs = {
+ .destroy = mdp4_lcdc_encoder_destroy,
+};
+
+/* this should probably be a helper: */
+struct drm_connector *get_connector(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_connector *connector;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ if (connector->encoder == encoder)
+ return connector;
+
+ return NULL;
+}
+
+static void setup_phy(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_connector *connector = get_connector(encoder);
+ struct mdp4_kms *mdp4_kms = get_kms(encoder);
+ uint32_t lvds_intf = 0, lvds_phy_cfg0 = 0;
+ int bpp, nchan, swap;
+
+ if (!connector)
+ return;
+
+ bpp = 3 * connector->display_info.bpc;
+
+ if (!bpp)
+ bpp = 18;
+
+ /* TODO, these should come from panel somehow: */
+ nchan = 1;
+ swap = 0;
+
+ switch (bpp) {
+ case 24:
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x08) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x05) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x04) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x03));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x02) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x01) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x00));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x11) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x10) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0d) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0c));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0b) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0a) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x09));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x15));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x14) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x13) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x12));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(3),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1b) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x17) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x16) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0f));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(3),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0e) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x07) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x06));
+ if (nchan == 2) {
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE3_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
+ } else {
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
+ }
+ break;
+
+ case 18:
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x0a) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x07) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x06) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x05));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x04) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x03) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x02));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x13) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x12) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0f) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0e));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0d) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0c) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x0b));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2),
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) |
+ MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x17));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2),
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x16) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x15) |
+ MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x14));
+ if (nchan == 2) {
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
+ } else {
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
+ }
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_RGB_OUT;
+ break;
+
+ default:
+ dev_err(dev->dev, "unknown bpp: %d\n", bpp);
+ return;
+ }
+
+ switch (nchan) {
+ case 1:
+ lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0;
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_MODE_SEL;
+ break;
+ case 2:
+ lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0 |
+ MDP4_LVDS_PHY_CFG0_CHANNEL1;
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_CLK_LANE_EN |
+ MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN;
+ break;
+ default:
+ dev_err(dev->dev, "unknown # of channels: %d\n", nchan);
+ return;
+ }
+
+ if (swap)
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH_SWAP;
+
+ lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_ENABLE;
+
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_INTF_CTL, lvds_intf);
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG2, 0x30);
+
+ mb();
+ udelay(1);
+ lvds_phy_cfg0 |= MDP4_LVDS_PHY_CFG0_SERIALIZATION_ENBLE;
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0);
+}
+
+static void mdp4_lcdc_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
+ to_mdp4_lcdc_encoder(encoder);
+ struct mdp4_kms *mdp4_kms = get_kms(encoder);
+ struct drm_panel *panel = mdp4_lcdc_encoder->panel;
+ bool enabled = (mode == DRM_MODE_DPMS_ON);
+ int i, ret;
+
+ DBG("mode=%d", mode);
+
+ if (enabled == mdp4_lcdc_encoder->enabled)
+ return;
+
+ if (enabled) {
+ unsigned long pc = mdp4_lcdc_encoder->pixclock;
+ int ret;
+
+ bs_set(mdp4_lcdc_encoder, 1);
+
+ for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) {
+ ret = regulator_enable(mdp4_lcdc_encoder->regs[i]);
+ if (ret)
+ dev_err(dev->dev, "failed to enable regulator: %d\n", ret);
+ }
+
+ DBG("setting lcdc_clk=%lu", pc);
+ ret = clk_set_rate(mdp4_lcdc_encoder->lcdc_clk, pc);
+ if (ret)
+ dev_err(dev->dev, "failed to configure lcdc_clk: %d\n", ret);
+ ret = clk_prepare_enable(mdp4_lcdc_encoder->lcdc_clk);
+ if (ret)
+ dev_err(dev->dev, "failed to enable lcdc_clk: %d\n", ret);
+
+ if (panel)
+ drm_panel_enable(panel);
+
+ setup_phy(encoder);
+
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 1);
+ } else {
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 0);
+
+ if (panel)
+ drm_panel_disable(panel);
+
+ /*
+ * Wait for a vsync so we know the ENABLE=0 latched before
+ * the (connector) source of the vsync's gets disabled,
+ * otherwise we end up in a funny state if we re-enable
+ * before the disable latches, which results that some of
+ * the settings changes for the new modeset (like new
+ * scanout buffer) don't latch properly..
+ */
+ mdp_irq_wait(&mdp4_kms->base, MDP4_IRQ_PRIMARY_VSYNC);
+
+ clk_disable_unprepare(mdp4_lcdc_encoder->lcdc_clk);
+
+ for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) {
+ ret = regulator_disable(mdp4_lcdc_encoder->regs[i]);
+ if (ret)
+ dev_err(dev->dev, "failed to disable regulator: %d\n", ret);
+ }
+
+ bs_set(mdp4_lcdc_encoder, 0);
+ }
+
+ mdp4_lcdc_encoder->enabled = enabled;
+}
+
+static bool mdp4_lcdc_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void mdp4_lcdc_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
+ to_mdp4_lcdc_encoder(encoder);
+ struct mdp4_kms *mdp4_kms = get_kms(encoder);
+ uint32_t lcdc_hsync_skew, vsync_period, vsync_len, ctrl_pol;
+ uint32_t display_v_start, display_v_end;
+ uint32_t hsync_start_x, hsync_end_x;
+
+ 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);
+
+ mdp4_lcdc_encoder->pixclock = mode->clock * 1000;
+
+ DBG("pixclock=%lu", mdp4_lcdc_encoder->pixclock);
+
+ ctrl_pol = 0;
+ if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+ ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_HSYNC_LOW;
+ if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+ ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_VSYNC_LOW;
+ /* probably need to get DATA_EN polarity from panel.. */
+
+ lcdc_hsync_skew = 0; /* 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 + lcdc_hsync_skew;
+ display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + lcdc_hsync_skew - 1;
+
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_CTRL,
+ MDP4_LCDC_HSYNC_CTRL_PULSEW(mode->hsync_end - mode->hsync_start) |
+ MDP4_LCDC_HSYNC_CTRL_PERIOD(mode->htotal));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_PERIOD, vsync_period);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_LEN, vsync_len);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_HCTRL,
+ MDP4_LCDC_DISPLAY_HCTRL_START(hsync_start_x) |
+ MDP4_LCDC_DISPLAY_HCTRL_END(hsync_end_x));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VSTART, display_v_start);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VEND, display_v_end);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_BORDER_CLR, 0);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_UNDERFLOW_CLR,
+ MDP4_LCDC_UNDERFLOW_CLR_ENABLE_RECOVERY |
+ MDP4_LCDC_UNDERFLOW_CLR_COLOR(0xff));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_SKEW, lcdc_hsync_skew);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_CTRL_POLARITY, ctrl_pol);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_HCTL,
+ MDP4_LCDC_ACTIVE_HCTL_START(0) |
+ MDP4_LCDC_ACTIVE_HCTL_END(0));
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VSTART, 0);
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VEND, 0);
+}
+
+static void mdp4_lcdc_encoder_prepare(struct drm_encoder *encoder)
+{
+ mdp4_lcdc_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
+}
+
+static void mdp4_lcdc_encoder_commit(struct drm_encoder *encoder)
+{
+ /* TODO: hard-coded for 18bpp: */
+ mdp4_crtc_set_config(encoder->crtc,
+ MDP4_DMA_CONFIG_R_BPC(BPC6) |
+ MDP4_DMA_CONFIG_G_BPC(BPC6) |
+ MDP4_DMA_CONFIG_B_BPC(BPC6) |
+ MDP4_DMA_CONFIG_PACK_ALIGN_MSB |
+ MDP4_DMA_CONFIG_PACK(0x21) |
+ MDP4_DMA_CONFIG_DEFLKR_EN |
+ MDP4_DMA_CONFIG_DITHER_EN);
+ mdp4_crtc_set_intf(encoder->crtc, INTF_LCDC_DTV, 0);
+ mdp4_lcdc_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
+}
+
+static const struct drm_encoder_helper_funcs mdp4_lcdc_encoder_helper_funcs = {
+ .dpms = mdp4_lcdc_encoder_dpms,
+ .mode_fixup = mdp4_lcdc_encoder_mode_fixup,
+ .mode_set = mdp4_lcdc_encoder_mode_set,
+ .prepare = mdp4_lcdc_encoder_prepare,
+ .commit = mdp4_lcdc_encoder_commit,
+};
+
+long mdp4_lcdc_round_pixclk(struct drm_encoder *encoder, unsigned long rate)
+{
+ struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
+ to_mdp4_lcdc_encoder(encoder);
+ return clk_round_rate(mdp4_lcdc_encoder->lcdc_clk, rate);
+}
+
+/* initialize encoder */
+struct drm_encoder *mdp4_lcdc_encoder_init(struct drm_device *dev,
+ struct drm_panel *panel)
+{
+ struct drm_encoder *encoder = NULL;
+ struct mdp4_lcdc_encoder *mdp4_lcdc_encoder;
+ struct regulator *reg;
+ int ret;
+
+ mdp4_lcdc_encoder = kzalloc(sizeof(*mdp4_lcdc_encoder), GFP_KERNEL);
+ if (!mdp4_lcdc_encoder) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ mdp4_lcdc_encoder->panel = panel;
+
+ encoder = &mdp4_lcdc_encoder->base;
+
+ drm_encoder_init(dev, encoder, &mdp4_lcdc_encoder_funcs,
+ DRM_MODE_ENCODER_LVDS);
+ drm_encoder_helper_add(encoder, &mdp4_lcdc_encoder_helper_funcs);
+
+ /* TODO: do we need different pll in other cases? */
+ mdp4_lcdc_encoder->lcdc_clk = mpd4_lvds_pll_init(dev);
+ if (IS_ERR(mdp4_lcdc_encoder->lcdc_clk)) {
+ dev_err(dev->dev, "failed to get lvds_clk\n");
+ ret = PTR_ERR(mdp4_lcdc_encoder->lcdc_clk);
+ goto fail;
+ }
+
+ /* TODO: different regulators in other cases? */
+ reg = devm_regulator_get(dev->dev, "lvds-vccs-3p3v");
+ if (IS_ERR(reg)) {
+ ret = PTR_ERR(reg);
+ dev_err(dev->dev, "failed to get lvds-vccs-3p3v: %d\n", ret);
+ goto fail;
+ }
+ mdp4_lcdc_encoder->regs[0] = reg;
+
+ reg = devm_regulator_get(dev->dev, "lvds-pll-vdda");
+ if (IS_ERR(reg)) {
+ ret = PTR_ERR(reg);
+ dev_err(dev->dev, "failed to get lvds-pll-vdda: %d\n", ret);
+ goto fail;
+ }
+ mdp4_lcdc_encoder->regs[1] = reg;
+
+ reg = devm_regulator_get(dev->dev, "lvds-vdda");
+ if (IS_ERR(reg)) {
+ ret = PTR_ERR(reg);
+ dev_err(dev->dev, "failed to get lvds-vdda: %d\n", ret);
+ goto fail;
+ }
+ mdp4_lcdc_encoder->regs[2] = reg;
+
+ bs_init(mdp4_lcdc_encoder);
+
+ return encoder;
+
+fail:
+ if (encoder)
+ mdp4_lcdc_encoder_destroy(encoder);
+
+ return ERR_PTR(ret);
+}
--- /dev/null
+/*
+ * Copyright (C) 2014 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ * Author: Vinay Simha <vinaysimha@inforcecomputing.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 <linux/gpio.h>
+
+#include "mdp4_kms.h"
+
+struct mdp4_lvds_connector {
+ struct drm_connector base;
+ struct drm_encoder *encoder;
+ struct drm_panel *panel;
+};
+#define to_mdp4_lvds_connector(x) container_of(x, struct mdp4_lvds_connector, base)
+
+static enum drm_connector_status mdp4_lvds_connector_detect(
+ struct drm_connector *connector, bool force)
+{
+ struct mdp4_lvds_connector *mdp4_lvds_connector =
+ to_mdp4_lvds_connector(connector);
+
+ return mdp4_lvds_connector->panel ?
+ connector_status_connected :
+ connector_status_disconnected;
+}
+
+static void mdp4_lvds_connector_destroy(struct drm_connector *connector)
+{
+ struct mdp4_lvds_connector *mdp4_lvds_connector =
+ to_mdp4_lvds_connector(connector);
+ struct drm_panel *panel = mdp4_lvds_connector->panel;
+
+ if (panel)
+ drm_panel_detach(panel);
+
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+
+ kfree(mdp4_lvds_connector);
+}
+
+static int mdp4_lvds_connector_get_modes(struct drm_connector *connector)
+{
+ struct mdp4_lvds_connector *mdp4_lvds_connector =
+ to_mdp4_lvds_connector(connector);
+ struct drm_panel *panel = mdp4_lvds_connector->panel;
+ int ret = 0;
+
+ if (panel)
+ ret = panel->funcs->get_modes(panel);
+
+ return ret;
+}
+
+static int mdp4_lvds_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct mdp4_lvds_connector *mdp4_lvds_connector =
+ to_mdp4_lvds_connector(connector);
+ struct drm_encoder *encoder = mdp4_lvds_connector->encoder;
+ long actual, requested;
+
+ requested = 1000 * mode->clock;
+ actual = mdp4_lcdc_round_pixclk(encoder, requested);
+
+ DBG("requested=%ld, actual=%ld", requested, actual);
+
+ if (actual != requested)
+ return MODE_CLOCK_RANGE;
+
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+mdp4_lvds_connector_best_encoder(struct drm_connector *connector)
+{
+ struct mdp4_lvds_connector *mdp4_lvds_connector =
+ to_mdp4_lvds_connector(connector);
+ return mdp4_lvds_connector->encoder;
+}
+
+static const struct drm_connector_funcs mdp4_lvds_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .detect = mdp4_lvds_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = mdp4_lvds_connector_destroy,
+};
+
+static const struct drm_connector_helper_funcs mdp4_lvds_connector_helper_funcs = {
+ .get_modes = mdp4_lvds_connector_get_modes,
+ .mode_valid = mdp4_lvds_connector_mode_valid,
+ .best_encoder = mdp4_lvds_connector_best_encoder,
+};
+
+/* initialize connector */
+struct drm_connector *mdp4_lvds_connector_init(struct drm_device *dev,
+ struct drm_panel *panel, struct drm_encoder *encoder)
+{
+ struct drm_connector *connector = NULL;
+ struct mdp4_lvds_connector *mdp4_lvds_connector;
+ int ret;
+
+ mdp4_lvds_connector = kzalloc(sizeof(*mdp4_lvds_connector), GFP_KERNEL);
+ if (!mdp4_lvds_connector) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ mdp4_lvds_connector->encoder = encoder;
+ mdp4_lvds_connector->panel = panel;
+
+ connector = &mdp4_lvds_connector->base;
+
+ drm_connector_init(dev, connector, &mdp4_lvds_connector_funcs,
+ DRM_MODE_CONNECTOR_LVDS);
+ drm_connector_helper_add(connector, &mdp4_lvds_connector_helper_funcs);
+
+ connector->polled = 0;
+
+ connector->interlace_allowed = 0;
+ connector->doublescan_allowed = 0;
+
+ drm_connector_register(connector);
+
+ drm_mode_connector_attach_encoder(connector, encoder);
+
+ if (panel)
+ drm_panel_attach(panel, connector);
+
+ return connector;
+
+fail:
+ if (connector)
+ mdp4_lvds_connector_destroy(connector);
+
+ return ERR_PTR(ret);
+}
--- /dev/null
+/*
+ * Copyright (C) 2014 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 <linux/clk.h>
+#include <linux/clk-provider.h>
+
+#include "mdp4_kms.h"
+
+struct mdp4_lvds_pll {
+ struct clk_hw pll_hw;
+ struct drm_device *dev;
+ unsigned long pixclk;
+};
+#define to_mdp4_lvds_pll(x) container_of(x, struct mdp4_lvds_pll, pll_hw)
+
+static struct mdp4_kms *get_kms(struct mdp4_lvds_pll *lvds_pll)
+{
+ struct msm_drm_private *priv = lvds_pll->dev->dev_private;
+ return to_mdp4_kms(to_mdp_kms(priv->kms));
+}
+
+struct pll_rate {
+ unsigned long rate;
+ struct {
+ uint32_t val;
+ uint32_t reg;
+ } conf[32];
+};
+
+/* NOTE: keep sorted highest freq to lowest: */
+static const struct pll_rate freqtbl[] = {
+ { 72000000, {
+ { 0x8f, REG_MDP4_LVDS_PHY_PLL_CTRL_1 },
+ { 0x30, REG_MDP4_LVDS_PHY_PLL_CTRL_2 },
+ { 0xc6, REG_MDP4_LVDS_PHY_PLL_CTRL_3 },
+ { 0x10, REG_MDP4_LVDS_PHY_PLL_CTRL_5 },
+ { 0x07, REG_MDP4_LVDS_PHY_PLL_CTRL_6 },
+ { 0x62, REG_MDP4_LVDS_PHY_PLL_CTRL_7 },
+ { 0x41, REG_MDP4_LVDS_PHY_PLL_CTRL_8 },
+ { 0x0d, REG_MDP4_LVDS_PHY_PLL_CTRL_9 },
+ { 0, 0 } }
+ },
+};
+
+static const struct pll_rate *find_rate(unsigned long rate)
+{
+ int i;
+ for (i = 1; i < ARRAY_SIZE(freqtbl); i++)
+ if (rate > freqtbl[i].rate)
+ return &freqtbl[i-1];
+ return &freqtbl[i-1];
+}
+
+static int mpd4_lvds_pll_enable(struct clk_hw *hw)
+{
+ struct mdp4_lvds_pll *lvds_pll = to_mdp4_lvds_pll(hw);
+ struct mdp4_kms *mdp4_kms = get_kms(lvds_pll);
+ const struct pll_rate *pll_rate = find_rate(lvds_pll->pixclk);
+ int i;
+
+ DBG("pixclk=%lu (%lu)", lvds_pll->pixclk, pll_rate->rate);
+
+ if (WARN_ON(!pll_rate))
+ return -EINVAL;
+
+ mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_PHY_RESET, 0x33);
+
+ for (i = 0; pll_rate->conf[i].reg; i++)
+ mdp4_write(mdp4_kms, pll_rate->conf[i].reg, pll_rate->conf[i].val);
+
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_PLL_CTRL_0, 0x01);
+
+ /* Wait until LVDS PLL is locked and ready */
+ while (!mdp4_read(mdp4_kms, REG_MDP4_LVDS_PHY_PLL_LOCKED))
+ cpu_relax();
+
+ return 0;
+}
+
+static void mpd4_lvds_pll_disable(struct clk_hw *hw)
+{
+ struct mdp4_lvds_pll *lvds_pll = to_mdp4_lvds_pll(hw);
+ struct mdp4_kms *mdp4_kms = get_kms(lvds_pll);
+
+ DBG("");
+
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, 0x0);
+ mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_PLL_CTRL_0, 0x0);
+}
+
+static unsigned long mpd4_lvds_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct mdp4_lvds_pll *lvds_pll = to_mdp4_lvds_pll(hw);
+ return lvds_pll->pixclk;
+}
+
+static long mpd4_lvds_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ const struct pll_rate *pll_rate = find_rate(rate);
+ return pll_rate->rate;
+}
+
+static int mpd4_lvds_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct mdp4_lvds_pll *lvds_pll = to_mdp4_lvds_pll(hw);
+ lvds_pll->pixclk = rate;
+ return 0;
+}
+
+
+static const struct clk_ops mpd4_lvds_pll_ops = {
+ .enable = mpd4_lvds_pll_enable,
+ .disable = mpd4_lvds_pll_disable,
+ .recalc_rate = mpd4_lvds_pll_recalc_rate,
+ .round_rate = mpd4_lvds_pll_round_rate,
+ .set_rate = mpd4_lvds_pll_set_rate,
+};
+
+static const char *mpd4_lvds_pll_parents[] = {
+ "pxo",
+};
+
+static struct clk_init_data pll_init = {
+ .name = "mpd4_lvds_pll",
+ .ops = &mpd4_lvds_pll_ops,
+ .parent_names = mpd4_lvds_pll_parents,
+ .num_parents = ARRAY_SIZE(mpd4_lvds_pll_parents),
+};
+
+struct clk *mpd4_lvds_pll_init(struct drm_device *dev)
+{
+ struct mdp4_lvds_pll *lvds_pll;
+ struct clk *clk;
+ int ret;
+
+ lvds_pll = devm_kzalloc(dev->dev, sizeof(*lvds_pll), GFP_KERNEL);
+ if (!lvds_pll) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ lvds_pll->dev = dev;
+
+ lvds_pll->pll_hw.init = &pll_init;
+ clk = devm_clk_register(dev->dev, &lvds_pll->pll_hw);
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ goto fail;
+ }
+
+ return clk;
+
+fail:
+ return ERR_PTR(ret);
+}
projects / platform / kernel / linux-exynos.git / commitdiff