diff options
Diffstat (limited to 'drivers/gpu/drm/gma500/mdfld_intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/mdfld_intel_display.c | 1180 |
1 files changed, 1180 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/mdfld_intel_display.c b/drivers/gpu/drm/gma500/mdfld_intel_display.c new file mode 100644 index 000000000000..a35a2921bdf7 --- /dev/null +++ b/drivers/gpu/drm/gma500/mdfld_intel_display.c @@ -0,0 +1,1180 @@ +/* + * Copyright © 2006-2007 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + * Authors: + * Eric Anholt <eric@anholt.net> + */ + +#include <linux/i2c.h> +#include <linux/pm_runtime.h> + +#include <drm/drmP.h> +#include "psb_intel_reg.h" +#include "psb_intel_display.h" +#include "framebuffer.h" +#include "mdfld_output.h" +#include "mdfld_dsi_output.h" + +/* Hardcoded currently */ +static int ksel = KSEL_CRYSTAL_19; + +struct psb_intel_range_t { + int min, max; +}; + +struct mrst_limit_t { + struct psb_intel_range_t dot, m, p1; +}; + +struct mrst_clock_t { + /* derived values */ + int dot; + int m; + int p1; +}; + +#define COUNT_MAX 0x10000000 + +void mdfldWaitForPipeDisable(struct drm_device *dev, int pipe) +{ + int count, temp; + u32 pipeconf_reg = PIPEACONF; + + switch (pipe) { + case 0: + break; + case 1: + pipeconf_reg = PIPEBCONF; + break; + case 2: + pipeconf_reg = PIPECCONF; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return; + } + + /* FIXME JLIU7_PO */ + psb_intel_wait_for_vblank(dev); + return; + + /* Wait for for the pipe disable to take effect. */ + for (count = 0; count < COUNT_MAX; count++) { + temp = REG_READ(pipeconf_reg); + if ((temp & PIPEACONF_PIPE_STATE) == 0) + break; + } +} + +void mdfldWaitForPipeEnable(struct drm_device *dev, int pipe) +{ + int count, temp; + u32 pipeconf_reg = PIPEACONF; + + switch (pipe) { + case 0: + break; + case 1: + pipeconf_reg = PIPEBCONF; + break; + case 2: + pipeconf_reg = PIPECCONF; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return; + } + + /* FIXME JLIU7_PO */ + psb_intel_wait_for_vblank(dev); + return; + + /* Wait for for the pipe enable to take effect. */ + for (count = 0; count < COUNT_MAX; count++) { + temp = REG_READ(pipeconf_reg); + if ((temp & PIPEACONF_PIPE_STATE) == 1) + break; + } +} + +static void psb_intel_crtc_prepare(struct drm_crtc *crtc) +{ + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); +} + +static void psb_intel_crtc_commit(struct drm_crtc *crtc) +{ + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); +} + +static bool psb_intel_crtc_mode_fixup(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +/** + * Return the pipe currently connected to the panel fitter, + * or -1 if the panel fitter is not present or not in use + */ +static int psb_intel_panel_fitter_pipe(struct drm_device *dev) +{ + u32 pfit_control; + + pfit_control = REG_READ(PFIT_CONTROL); + + /* See if the panel fitter is in use */ + if ((pfit_control & PFIT_ENABLE) == 0) + return -1; + + /* 965 can place panel fitter on either pipe */ + return (pfit_control >> 29) & 0x3; +} + +static struct drm_device globle_dev; + +void mdfld__intel_plane_set_alpha(int enable) +{ + struct drm_device *dev = &globle_dev; + int dspcntr_reg = DSPACNTR; + u32 dspcntr; + + dspcntr = REG_READ(dspcntr_reg); + + if (enable) { + dspcntr &= ~DISPPLANE_32BPP_NO_ALPHA; + dspcntr |= DISPPLANE_32BPP; + } else { + dspcntr &= ~DISPPLANE_32BPP; + dspcntr |= DISPPLANE_32BPP_NO_ALPHA; + } + + REG_WRITE(dspcntr_reg, dspcntr); +} + +static int check_fb(struct drm_framebuffer *fb) +{ + if (!fb) + return 0; + + switch (fb->bits_per_pixel) { + case 8: + case 16: + case 24: + case 32: + return 0; + default: + DRM_ERROR("Unknown color depth\n"); + return -EINVAL; + } +} + +static int mdfld__intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_device *dev = crtc->dev; + /* struct drm_i915_master_private *master_priv; */ + struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); + struct psb_framebuffer *psbfb = to_psb_fb(crtc->fb); + int pipe = psb_intel_crtc->pipe; + unsigned long start, offset; + int dsplinoff = DSPALINOFF; + int dspsurf = DSPASURF; + int dspstride = DSPASTRIDE; + int dspcntr_reg = DSPACNTR; + u32 dspcntr; + int ret; + + memcpy(&globle_dev, dev, sizeof(struct drm_device)); + + dev_dbg(dev->dev, "pipe = 0x%x.\n", pipe); + + /* no fb bound */ + if (!crtc->fb) { + dev_dbg(dev->dev, "No FB bound\n"); + return 0; + } + + ret = check_fb(crtc->fb); + if (ret) + return ret; + + switch (pipe) { + case 0: + dsplinoff = DSPALINOFF; + break; + case 1: + dsplinoff = DSPBLINOFF; + dspsurf = DSPBSURF; + dspstride = DSPBSTRIDE; + dspcntr_reg = DSPBCNTR; + break; + case 2: + dsplinoff = DSPCLINOFF; + dspsurf = DSPCSURF; + dspstride = DSPCSTRIDE; + dspcntr_reg = DSPCCNTR; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return -EINVAL; + } + + if (!gma_power_begin(dev, true)) + return 0; + + start = psbfb->gtt->offset; + offset = y * crtc->fb->pitches[0] + x * (crtc->fb->bits_per_pixel / 8); + + REG_WRITE(dspstride, crtc->fb->pitches[0]); + dspcntr = REG_READ(dspcntr_reg); + dspcntr &= ~DISPPLANE_PIXFORMAT_MASK; + + switch (crtc->fb->bits_per_pixel) { + case 8: + dspcntr |= DISPPLANE_8BPP; + break; + case 16: + if (crtc->fb->depth == 15) + dspcntr |= DISPPLANE_15_16BPP; + else + dspcntr |= DISPPLANE_16BPP; + break; + case 24: + case 32: + dspcntr |= DISPPLANE_32BPP_NO_ALPHA; + break; + } + REG_WRITE(dspcntr_reg, dspcntr); + + dev_dbg(dev->dev, "Writing base %08lX %08lX %d %d\n", + start, offset, x, y); + REG_WRITE(dsplinoff, offset); + REG_READ(dsplinoff); + REG_WRITE(dspsurf, start); + REG_READ(dspsurf); + + gma_power_end(dev); + + return 0; +} + +/* + * Disable the pipe, plane and pll. + * + */ +void mdfld_disable_crtc(struct drm_device *dev, int pipe) +{ + int dpll_reg = MRST_DPLL_A; + int dspcntr_reg = DSPACNTR; + int dspbase_reg = MRST_DSPABASE; + int pipeconf_reg = PIPEACONF; + u32 temp; + + dev_dbg(dev->dev, "pipe = %d\n", pipe); + + + switch (pipe) { + case 0: + break; + case 1: + dpll_reg = MDFLD_DPLL_B; + dspcntr_reg = DSPBCNTR; + dspbase_reg = DSPBSURF; + pipeconf_reg = PIPEBCONF; + break; + case 2: + dpll_reg = MRST_DPLL_A; + dspcntr_reg = DSPCCNTR; + dspbase_reg = MDFLD_DSPCBASE; + pipeconf_reg = PIPECCONF; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return; + } + + if (pipe != 1) + mdfld_dsi_gen_fifo_ready(dev, MIPI_GEN_FIFO_STAT_REG(pipe), + HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY); + + /* Disable display plane */ + temp = REG_READ(dspcntr_reg); + if ((temp & DISPLAY_PLANE_ENABLE) != 0) { + REG_WRITE(dspcntr_reg, + temp & ~DISPLAY_PLANE_ENABLE); + /* Flush the plane changes */ + REG_WRITE(dspbase_reg, REG_READ(dspbase_reg)); + REG_READ(dspbase_reg); + } + + /* FIXME_JLIU7 MDFLD_PO revisit */ + + /* Next, disable display pipes */ + temp = REG_READ(pipeconf_reg); + if ((temp & PIPEACONF_ENABLE) != 0) { + temp &= ~PIPEACONF_ENABLE; + temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF; + REG_WRITE(pipeconf_reg, temp); + REG_READ(pipeconf_reg); + + /* Wait for for the pipe disable to take effect. */ + mdfldWaitForPipeDisable(dev, pipe); + } + + temp = REG_READ(dpll_reg); + if (temp & DPLL_VCO_ENABLE) { + if ((pipe != 1 && + !((REG_READ(PIPEACONF) | REG_READ(PIPECCONF)) + & PIPEACONF_ENABLE)) || pipe == 1) { + temp &= ~(DPLL_VCO_ENABLE); + REG_WRITE(dpll_reg, temp); + REG_READ(dpll_reg); + /* Wait for the clocks to turn off. */ + /* FIXME_MDFLD PO may need more delay */ + udelay(500); + + if (!(temp & MDFLD_PWR_GATE_EN)) { + /* gating power of DPLL */ + REG_WRITE(dpll_reg, temp | MDFLD_PWR_GATE_EN); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(5000); + } + } + } + +} + +/** + * Sets the power management mode of the pipe and plane. + * + * This code should probably grow support for turning the cursor off and back + * on appropriately at the same time as we're turning the pipe off/on. + */ +static void mdfld_crtc_dpms(struct drm_crtc *crtc, int mode) +{ + struct drm_device *dev = crtc->dev; + struct drm_psb_private *dev_priv = dev->dev_private; + struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); + int pipe = psb_intel_crtc->pipe; + int dpll_reg = MRST_DPLL_A; + int dspcntr_reg = DSPACNTR; + int dspbase_reg = MRST_DSPABASE; + int pipeconf_reg = PIPEACONF; + u32 pipestat_reg = PIPEASTAT; + u32 pipeconf = dev_priv->pipeconf[pipe]; + u32 temp; + int timeout = 0; + + dev_dbg(dev->dev, "mode = %d, pipe = %d\n", mode, pipe); + +/* FIXME_JLIU7 MDFLD_PO replaced w/ the following function */ +/* mdfld_dbi_dpms (struct drm_device *dev, int pipe, bool enabled) */ + + switch (pipe) { + case 0: + break; + case 1: + dpll_reg = DPLL_B; + dspcntr_reg = DSPBCNTR; + dspbase_reg = MRST_DSPBBASE; + pipeconf_reg = PIPEBCONF; + dpll_reg = MDFLD_DPLL_B; + break; + case 2: + dpll_reg = MRST_DPLL_A; + dspcntr_reg = DSPCCNTR; + dspbase_reg = MDFLD_DSPCBASE; + pipeconf_reg = PIPECCONF; + pipestat_reg = PIPECSTAT; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return; + } + + if (!gma_power_begin(dev, true)) + return; + + /* XXX: When our outputs are all unaware of DPMS modes other than off + * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC. + */ + switch (mode) { + case DRM_MODE_DPMS_ON: + case DRM_MODE_DPMS_STANDBY: + case DRM_MODE_DPMS_SUSPEND: + /* Enable the DPLL */ + temp = REG_READ(dpll_reg); + + if ((temp & DPLL_VCO_ENABLE) == 0) { + /* When ungating power of DPLL, needs to wait 0.5us + before enable the VCO */ + if (temp & MDFLD_PWR_GATE_EN) { + temp &= ~MDFLD_PWR_GATE_EN; + REG_WRITE(dpll_reg, temp); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + } + + REG_WRITE(dpll_reg, temp); + REG_READ(dpll_reg); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + + REG_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE); + REG_READ(dpll_reg); + + /** + * wait for DSI PLL to lock + * NOTE: only need to poll status of pipe 0 and pipe 1, + * since both MIPI pipes share the same PLL. + */ + while ((pipe != 2) && (timeout < 20000) && + !(REG_READ(pipeconf_reg) & PIPECONF_DSIPLL_LOCK)) { + udelay(150); + timeout++; + } + } + + /* Enable the plane */ + temp = REG_READ(dspcntr_reg); + if ((temp & DISPLAY_PLANE_ENABLE) == 0) { + REG_WRITE(dspcntr_reg, + temp | DISPLAY_PLANE_ENABLE); + /* Flush the plane changes */ + REG_WRITE(dspbase_reg, REG_READ(dspbase_reg)); + } + + /* Enable the pipe */ + temp = REG_READ(pipeconf_reg); + if ((temp & PIPEACONF_ENABLE) == 0) { + REG_WRITE(pipeconf_reg, pipeconf); + + /* Wait for for the pipe enable to take effect. */ + mdfldWaitForPipeEnable(dev, pipe); + } + + /*workaround for sighting 3741701 Random X blank display*/ + /*perform w/a in video mode only on pipe A or C*/ + if (pipe == 0 || pipe == 2) { + REG_WRITE(pipestat_reg, REG_READ(pipestat_reg)); + msleep(100); + if (PIPE_VBLANK_STATUS & REG_READ(pipestat_reg)) + dev_dbg(dev->dev, "OK"); + else { + dev_dbg(dev->dev, "STUCK!!!!"); + /*shutdown controller*/ + temp = REG_READ(dspcntr_reg); + REG_WRITE(dspcntr_reg, + temp & ~DISPLAY_PLANE_ENABLE); + REG_WRITE(dspbase_reg, REG_READ(dspbase_reg)); + /*mdfld_dsi_dpi_shut_down(dev, pipe);*/ + REG_WRITE(0xb048, 1); + msleep(100); + temp = REG_READ(pipeconf_reg); + temp &= ~PIPEACONF_ENABLE; + REG_WRITE(pipeconf_reg, temp); + msleep(100); /*wait for pipe disable*/ + REG_WRITE(MIPI_DEVICE_READY_REG(pipe), 0); + msleep(100); + REG_WRITE(0xb004, REG_READ(0xb004)); + /* try to bring the controller back up again*/ + REG_WRITE(MIPI_DEVICE_READY_REG(pipe), 1); + temp = REG_READ(dspcntr_reg); + REG_WRITE(dspcntr_reg, + temp | DISPLAY_PLANE_ENABLE); + REG_WRITE(dspbase_reg, REG_READ(dspbase_reg)); + /*mdfld_dsi_dpi_turn_on(dev, pipe);*/ + REG_WRITE(0xb048, 2); + msleep(100); + temp = REG_READ(pipeconf_reg); + temp |= PIPEACONF_ENABLE; + REG_WRITE(pipeconf_reg, temp); + } + } + + psb_intel_crtc_load_lut(crtc); + + /* Give the overlay scaler a chance to enable + if it's on this pipe */ + /* psb_intel_crtc_dpms_video(crtc, true); TODO */ + + break; + case DRM_MODE_DPMS_OFF: + /* Give the overlay scaler a chance to disable + * if it's on this pipe */ + /* psb_intel_crtc_dpms_video(crtc, FALSE); TODO */ + if (pipe != 1) + mdfld_dsi_gen_fifo_ready(dev, + MIPI_GEN_FIFO_STAT_REG(pipe), + HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY); + + /* Disable the VGA plane that we never use */ + REG_WRITE(VGACNTRL, VGA_DISP_DISABLE); + + /* Disable display plane */ + temp = REG_READ(dspcntr_reg); + if ((temp & DISPLAY_PLANE_ENABLE) != 0) { + REG_WRITE(dspcntr_reg, + temp & ~DISPLAY_PLANE_ENABLE); + /* Flush the plane changes */ + REG_WRITE(dspbase_reg, REG_READ(dspbase_reg)); + REG_READ(dspbase_reg); + } + + /* Next, disable display pipes */ + temp = REG_READ(pipeconf_reg); + if ((temp & PIPEACONF_ENABLE) != 0) { + temp &= ~PIPEACONF_ENABLE; + temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF; + REG_WRITE(pipeconf_reg, temp); + REG_READ(pipeconf_reg); + + /* Wait for for the pipe disable to take effect. */ + mdfldWaitForPipeDisable(dev, pipe); + } + + temp = REG_READ(dpll_reg); + if (temp & DPLL_VCO_ENABLE) { + if ((pipe != 1 && !((REG_READ(PIPEACONF) + | REG_READ(PIPECCONF)) & PIPEACONF_ENABLE)) + || pipe == 1) { + temp &= ~(DPLL_VCO_ENABLE); + REG_WRITE(dpll_reg, temp); + REG_READ(dpll_reg); + /* Wait for the clocks to turn off. */ + /* FIXME_MDFLD PO may need more delay */ + udelay(500); + } + } + break; + } + gma_power_end(dev); +} + + +#define MDFLD_LIMT_DPLL_19 0 +#define MDFLD_LIMT_DPLL_25 1 +#define MDFLD_LIMT_DPLL_83 2 +#define MDFLD_LIMT_DPLL_100 3 +#define MDFLD_LIMT_DSIPLL_19 4 +#define MDFLD_LIMT_DSIPLL_25 5 +#define MDFLD_LIMT_DSIPLL_83 6 +#define MDFLD_LIMT_DSIPLL_100 7 + +#define MDFLD_DOT_MIN 19750 +#define MDFLD_DOT_MAX 120000 +#define MDFLD_DPLL_M_MIN_19 113 +#define MDFLD_DPLL_M_MAX_19 155 +#define MDFLD_DPLL_P1_MIN_19 2 +#define MDFLD_DPLL_P1_MAX_19 10 +#define MDFLD_DPLL_M_MIN_25 101 +#define MDFLD_DPLL_M_MAX_25 130 +#define MDFLD_DPLL_P1_MIN_25 2 +#define MDFLD_DPLL_P1_MAX_25 10 +#define MDFLD_DPLL_M_MIN_83 64 +#define MDFLD_DPLL_M_MAX_83 64 +#define MDFLD_DPLL_P1_MIN_83 2 +#define MDFLD_DPLL_P1_MAX_83 2 +#define MDFLD_DPLL_M_MIN_100 64 +#define MDFLD_DPLL_M_MAX_100 64 +#define MDFLD_DPLL_P1_MIN_100 2 +#define MDFLD_DPLL_P1_MAX_100 2 +#define MDFLD_DSIPLL_M_MIN_19 131 +#define MDFLD_DSIPLL_M_MAX_19 175 +#define MDFLD_DSIPLL_P1_MIN_19 3 +#define MDFLD_DSIPLL_P1_MAX_19 8 +#define MDFLD_DSIPLL_M_MIN_25 97 +#define MDFLD_DSIPLL_M_MAX_25 140 +#define MDFLD_DSIPLL_P1_MIN_25 3 +#define MDFLD_DSIPLL_P1_MAX_25 9 +#define MDFLD_DSIPLL_M_MIN_83 33 +#define MDFLD_DSIPLL_M_MAX_83 92 +#define MDFLD_DSIPLL_P1_MIN_83 2 +#define MDFLD_DSIPLL_P1_MAX_83 3 +#define MDFLD_DSIPLL_M_MIN_100 97 +#define MDFLD_DSIPLL_M_MAX_100 140 +#define MDFLD_DSIPLL_P1_MIN_100 3 +#define MDFLD_DSIPLL_P1_MAX_100 9 + +static const struct mrst_limit_t mdfld_limits[] = { + { /* MDFLD_LIMT_DPLL_19 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DPLL_M_MIN_19, .max = MDFLD_DPLL_M_MAX_19}, + .p1 = {.min = MDFLD_DPLL_P1_MIN_19, .max = MDFLD_DPLL_P1_MAX_19}, + }, + { /* MDFLD_LIMT_DPLL_25 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DPLL_M_MIN_25, .max = MDFLD_DPLL_M_MAX_25}, + .p1 = {.min = MDFLD_DPLL_P1_MIN_25, .max = MDFLD_DPLL_P1_MAX_25}, + }, + { /* MDFLD_LIMT_DPLL_83 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DPLL_M_MIN_83, .max = MDFLD_DPLL_M_MAX_83}, + .p1 = {.min = MDFLD_DPLL_P1_MIN_83, .max = MDFLD_DPLL_P1_MAX_83}, + }, + { /* MDFLD_LIMT_DPLL_100 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DPLL_M_MIN_100, .max = MDFLD_DPLL_M_MAX_100}, + .p1 = {.min = MDFLD_DPLL_P1_MIN_100, .max = MDFLD_DPLL_P1_MAX_100}, + }, + { /* MDFLD_LIMT_DSIPLL_19 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DSIPLL_M_MIN_19, .max = MDFLD_DSIPLL_M_MAX_19}, + .p1 = {.min = MDFLD_DSIPLL_P1_MIN_19, .max = MDFLD_DSIPLL_P1_MAX_19}, + }, + { /* MDFLD_LIMT_DSIPLL_25 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DSIPLL_M_MIN_25, .max = MDFLD_DSIPLL_M_MAX_25}, + .p1 = {.min = MDFLD_DSIPLL_P1_MIN_25, .max = MDFLD_DSIPLL_P1_MAX_25}, + }, + { /* MDFLD_LIMT_DSIPLL_83 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DSIPLL_M_MIN_83, .max = MDFLD_DSIPLL_M_MAX_83}, + .p1 = {.min = MDFLD_DSIPLL_P1_MIN_83, .max = MDFLD_DSIPLL_P1_MAX_83}, + }, + { /* MDFLD_LIMT_DSIPLL_100 */ + .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX}, + .m = {.min = MDFLD_DSIPLL_M_MIN_100, .max = MDFLD_DSIPLL_M_MAX_100}, + .p1 = {.min = MDFLD_DSIPLL_P1_MIN_100, .max = MDFLD_DSIPLL_P1_MAX_100}, + }, +}; + +#define MDFLD_M_MIN 21 +#define MDFLD_M_MAX 180 +static const u32 mdfld_m_converts[] = { +/* M configuration table from 9-bit LFSR table */ + 224, 368, 440, 220, 366, 439, 219, 365, 182, 347, /* 21 - 30 */ + 173, 342, 171, 85, 298, 149, 74, 37, 18, 265, /* 31 - 40 */ + 388, 194, 353, 432, 216, 108, 310, 155, 333, 166, /* 41 - 50 */ + 83, 41, 276, 138, 325, 162, 337, 168, 340, 170, /* 51 - 60 */ + 341, 426, 469, 234, 373, 442, 221, 110, 311, 411, /* 61 - 70 */ + 461, 486, 243, 377, 188, 350, 175, 343, 427, 213, /* 71 - 80 */ + 106, 53, 282, 397, 354, 227, 113, 56, 284, 142, /* 81 - 90 */ + 71, 35, 273, 136, 324, 418, 465, 488, 500, 506, /* 91 - 100 */ + 253, 126, 63, 287, 399, 455, 483, 241, 376, 444, /* 101 - 110 */ + 478, 495, 503, 251, 381, 446, 479, 239, 375, 443, /* 111 - 120 */ + 477, 238, 119, 315, 157, 78, 295, 147, 329, 420, /* 121 - 130 */ + 210, 105, 308, 154, 77, 38, 275, 137, 68, 290, /* 131 - 140 */ + 145, 328, 164, 82, 297, 404, 458, 485, 498, 249, /* 141 - 150 */ + 380, 190, 351, 431, 471, 235, 117, 314, 413, 206, /* 151 - 160 */ + 103, 51, 25, 12, 262, 387, 193, 96, 48, 280, /* 161 - 170 */ + 396, 198, 99, 305, 152, 76, 294, 403, 457, 228, /* 171 - 180 */ +}; + +static const struct mrst_limit_t *mdfld_limit(struct drm_crtc *crtc) +{ + const struct mrst_limit_t *limit = NULL; + struct drm_device *dev = crtc->dev; + struct drm_psb_private *dev_priv = dev->dev_private; + + if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_MIPI) + || psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_MIPI2)) { + if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19)) + limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_19]; + else if (ksel == KSEL_BYPASS_25) + limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_25]; + else if ((ksel == KSEL_BYPASS_83_100) && + (dev_priv->core_freq == 166)) + limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_83]; + else if ((ksel == KSEL_BYPASS_83_100) && + (dev_priv->core_freq == 100 || + dev_priv->core_freq == 200)) + limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_100]; + } else if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) { + if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19)) + limit = &mdfld_limits[MDFLD_LIMT_DPLL_19]; + else if (ksel == KSEL_BYPASS_25) + limit = &mdfld_limits[MDFLD_LIMT_DPLL_25]; + else if ((ksel == KSEL_BYPASS_83_100) && + (dev_priv->core_freq == 166)) + limit = &mdfld_limits[MDFLD_LIMT_DPLL_83]; + else if ((ksel == KSEL_BYPASS_83_100) && + (dev_priv->core_freq == 100 || + dev_priv->core_freq == 200)) + limit = &mdfld_limits[MDFLD_LIMT_DPLL_100]; + } else { + limit = NULL; + dev_dbg(dev->dev, "mdfld_limit Wrong display type.\n"); + } + + return limit; +} + +/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */ +static void mdfld_clock(int refclk, struct mrst_clock_t *clock) +{ + clock->dot = (refclk * clock->m) / clock->p1; +} + +/** + * Returns a set of divisors for the desired target clock with the given refclk, + * or FALSE. Divisor values are the actual divisors for + */ +static bool +mdfldFindBestPLL(struct drm_crtc *crtc, int target, int refclk, + struct mrst_clock_t *best_clock) +{ + struct mrst_clock_t clock; + const struct mrst_limit_t *limit = mdfld_limit(crtc); + int err = target; + + memset(best_clock, 0, sizeof(*best_clock)); + + for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) { + for (clock.p1 = limit->p1.min; clock.p1 <= limit->p1.max; + clock.p1++) { + int this_err; + + mdfld_clock(refclk, &clock); + + this_err = abs(clock.dot - target); + if (this_err < err) { + *best_clock = clock; + err = this_err; + } + } + } + return err != target; +} + +static int mdfld_crtc_mode_set(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, + int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_device *dev = crtc->dev; + struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); + struct drm_psb_private *dev_priv = dev->dev_private; + int pipe = psb_intel_crtc->pipe; + int fp_reg = MRST_FPA0; + int dpll_reg = MRST_DPLL_A; + int dspcntr_reg = DSPACNTR; + int pipeconf_reg = PIPEACONF; + int htot_reg = HTOTAL_A; + int hblank_reg = HBLANK_A; + int hsync_reg = HSYNC_A; + int vtot_reg = VTOTAL_A; + int vblank_reg = VBLANK_A; + int vsync_reg = VSYNC_A; + int dspsize_reg = DSPASIZE; + int dsppos_reg = DSPAPOS; + int pipesrc_reg = PIPEASRC; + u32 *pipeconf = &dev_priv->pipeconf[pipe]; + u32 *dspcntr = &dev_priv->dspcntr[pipe]; + int refclk = 0; + int clk_n = 0, clk_p2 = 0, clk_byte = 1, clk = 0, m_conv = 0, + clk_tmp = 0; + struct mrst_clock_t clock; + bool ok; + u32 dpll = 0, fp = 0; + bool is_mipi = false, is_mipi2 = false, is_hdmi = false; + struct drm_mode_config *mode_config = &dev->mode_config; + struct psb_intel_encoder *psb_intel_encoder = NULL; + uint64_t scalingType = DRM_MODE_SCALE_FULLSCREEN; + struct drm_encoder *encoder; + struct drm_connector *connector; + int timeout = 0; + int ret; + + dev_dbg(dev->dev, "pipe = 0x%x\n", pipe); + +#if 0 + if (pipe == 1) { + if (!gma_power_begin(dev, true)) + return 0; + android_hdmi_crtc_mode_set(crtc, mode, adjusted_mode, + x, y, old_fb); + goto mrst_crtc_mode_set_exit; + } +#endif + + switch (pipe) { + case 0: + break; + case 1: + fp_reg = FPB0; + dpll_reg = DPLL_B; + dspcntr_reg = DSPBCNTR; + pipeconf_reg = PIPEBCONF; + htot_reg = HTOTAL_B; + hblank_reg = HBLANK_B; + hsync_reg = HSYNC_B; + vtot_reg = VTOTAL_B; + vblank_reg = VBLANK_B; + vsync_reg = VSYNC_B; + dspsize_reg = DSPBSIZE; + dsppos_reg = DSPBPOS; + pipesrc_reg = PIPEBSRC; + fp_reg = MDFLD_DPLL_DIV0; + dpll_reg = MDFLD_DPLL_B; + break; + case 2: + dpll_reg = MRST_DPLL_A; + dspcntr_reg = DSPCCNTR; + pipeconf_reg = PIPECCONF; + htot_reg = HTOTAL_C; + hblank_reg = HBLANK_C; + hsync_reg = HSYNC_C; + vtot_reg = VTOTAL_C; + vblank_reg = VBLANK_C; + vsync_reg = VSYNC_C; + dspsize_reg = DSPCSIZE; + dsppos_reg = DSPCPOS; + pipesrc_reg = PIPECSRC; + break; + default: + DRM_ERROR("Illegal Pipe Number.\n"); + return 0; + } + + ret = check_fb(crtc->fb); + if (ret) + return ret; + + dev_dbg(dev->dev, "adjusted_hdisplay = %d\n", + adjusted_mode->hdisplay); + dev_dbg(dev->dev, "adjusted_vdisplay = %d\n", + adjusted_mode->vdisplay); + dev_dbg(dev->dev, "adjusted_hsync_start = %d\n", + adjusted_mode->hsync_start); + dev_dbg(dev->dev, "adjusted_hsync_end = %d\n", + adjusted_mode->hsync_end); + dev_dbg(dev->dev, "adjusted_htotal = %d\n", + adjusted_mode->htotal); + dev_dbg(dev->dev, "adjusted_vsync_start = %d\n", + adjusted_mode->vsync_start); + dev_dbg(dev->dev, "adjusted_vsync_end = %d\n", + adjusted_mode->vsync_end); + dev_dbg(dev->dev, "adjusted_vtotal = %d\n", + adjusted_mode->vtotal); + dev_dbg(dev->dev, "adjusted_clock = %d\n", + adjusted_mode->clock); + dev_dbg(dev->dev, "hdisplay = %d\n", + mode->hdisplay); + dev_dbg(dev->dev, "vdisplay = %d\n", + mode->vdisplay); + + if (!gma_power_begin(dev, true)) + return 0; + + memcpy(&psb_intel_crtc->saved_mode, mode, + sizeof(struct drm_display_mode)); + memcpy(&psb_intel_crtc->saved_adjusted_mode, adjusted_mode, + sizeof(struct drm_display_mode)); + + list_for_each_entry(connector, &mode_config->connector_list, head) { + if (!connector) + continue; + + encoder = connector->encoder; + + if (!encoder) + continue; + + if (encoder->crtc != crtc) + continue; + + psb_intel_encoder = psb_intel_attached_encoder(connector); + + switch (psb_intel_encoder->type) { + case INTEL_OUTPUT_MIPI: + is_mipi = true; + break; + case INTEL_OUTPUT_MIPI2: + is_mipi2 = true; + break; + case INTEL_OUTPUT_HDMI: + is_hdmi = true; + break; + } + } + + /* Disable the VGA plane that we never use */ + REG_WRITE(VGACNTRL, VGA_DISP_DISABLE); + + /* Disable the panel fitter if it was on our pipe */ + if (psb_intel_panel_fitter_pipe(dev) == pipe) + REG_WRITE(PFIT_CONTROL, 0); + + /* pipesrc and dspsize control the size that is scaled from, + * which should always be the user's requested size. + */ + if (pipe == 1) { + /* FIXME: To make HDMI display with 864x480 (TPO), 480x864 + * (PYR) or 480x854 (TMD), set the sprite width/height and + * souce image size registers with the adjusted mode for + * pipe B. + */ + + /* + * The defined sprite rectangle must always be completely + * contained within the displayable area of the screen image + * (frame buffer). + */ + REG_WRITE(dspsize_reg, ((min(mode->crtc_vdisplay, adjusted_mode->crtc_vdisplay) - 1) << 16) + | (min(mode->crtc_hdisplay, adjusted_mode->crtc_hdisplay) - 1)); + /* Set the CRTC with encoder mode. */ + REG_WRITE(pipesrc_reg, ((mode->crtc_hdisplay - 1) << 16) + | (mode->crtc_vdisplay - 1)); + } else { + REG_WRITE(dspsize_reg, + ((mode->crtc_vdisplay - 1) << 16) | + (mode->crtc_hdisplay - 1)); + REG_WRITE(pipesrc_reg, + ((mode->crtc_hdisplay - 1) << 16) | + (mode->crtc_vdisplay - 1)); + } + + REG_WRITE(dsppos_reg, 0); + + if (psb_intel_encoder) + drm_connector_property_get_value(connector, + dev->mode_config.scaling_mode_property, &scalingType); + + if (scalingType == DRM_MODE_SCALE_NO_SCALE) { + /* Medfield doesn't have register support for centering so we + * need to mess with the h/vblank and h/vsync start and ends + * to get centering + */ + int offsetX = 0, offsetY = 0; + + offsetX = (adjusted_mode->crtc_hdisplay - + mode->crtc_hdisplay) / 2; + offsetY = (adjusted_mode->crtc_vdisplay - + mode->crtc_vdisplay) / 2; + + REG_WRITE(htot_reg, (mode->crtc_hdisplay - 1) | + ((adjusted_mode->crtc_htotal - 1) << 16)); + REG_WRITE(vtot_reg, (mode->crtc_vdisplay - 1) | + ((adjusted_mode->crtc_vtotal - 1) << 16)); + REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - + offsetX - 1) | + ((adjusted_mode->crtc_hblank_end - offsetX - 1) << 16)); + REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - + offsetX - 1) | + ((adjusted_mode->crtc_hsync_end - offsetX - 1) << 16)); + REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - + offsetY - 1) | + ((adjusted_mode->crtc_vblank_end - offsetY - 1) << 16)); + REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - + offsetY - 1) | + ((adjusted_mode->crtc_vsync_end - offsetY - 1) << 16)); + } else { + REG_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) | + ((adjusted_mode->crtc_htotal - 1) << 16)); + REG_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) | + ((adjusted_mode->crtc_vtotal - 1) << 16)); + REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) | + ((adjusted_mode->crtc_hblank_end - 1) << 16)); + REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) | + ((adjusted_mode->crtc_hsync_end - 1) << 16)); + REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) | + ((adjusted_mode->crtc_vblank_end - 1) << 16)); + REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) | + ((adjusted_mode->crtc_vsync_end - 1) << 16)); + } + + /* Flush the plane changes */ + { + struct drm_crtc_helper_funcs *crtc_funcs = + crtc->helper_private; + crtc_funcs->mode_set_base(crtc, x, y, old_fb); + } + + /* setup pipeconf */ + *pipeconf = PIPEACONF_ENABLE; /* FIXME_JLIU7 REG_READ(pipeconf_reg); */ + + /* Set up the display plane register */ + *dspcntr = REG_READ(dspcntr_reg); + *dspcntr |= pipe << DISPPLANE_SEL_PIPE_POS; + *dspcntr |= DISPLAY_PLANE_ENABLE; + + if (is_mipi2) + goto mrst_crtc_mode_set_exit; + clk = adjusted_mode->clock; + + if (is_hdmi) { + if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19)) { + refclk = 19200; + + if (is_mipi || is_mipi2) + clk_n = 1, clk_p2 = 8; + else if (is_hdmi) + clk_n = 1, clk_p2 = 10; + } else if (ksel == KSEL_BYPASS_25) { + refclk = 25000; + + if (is_mipi || is_mipi2) + clk_n = 1, clk_p2 = 8; + else if (is_hdmi) + clk_n = 1, clk_p2 = 10; + } else if ((ksel == KSEL_BYPASS_83_100) && + dev_priv->core_freq == 166) { + refclk = 83000; + + if (is_mipi || is_mipi2) + clk_n = 4, clk_p2 = 8; + else if (is_hdmi) + clk_n = 4, clk_p2 = 10; + } else if ((ksel == KSEL_BYPASS_83_100) && + (dev_priv->core_freq == 100 || + dev_priv->core_freq == 200)) { + refclk = 100000; + if (is_mipi || is_mipi2) + clk_n = 4, clk_p2 = 8; + else if (is_hdmi) + clk_n = 4, clk_p2 = 10; + } + + if (is_mipi) + clk_byte = dev_priv->bpp / 8; + else if (is_mipi2) + clk_byte = dev_priv->bpp2 / 8; + + clk_tmp = clk * clk_n * clk_p2 * clk_byte; + + dev_dbg(dev->dev, "clk = %d, clk_n = %d, clk_p2 = %d.\n", + clk, clk_n, clk_p2); + dev_dbg(dev->dev, "adjusted_mode->clock = %d, clk_tmp = %d.\n", + adjusted_mode->clock, clk_tmp); + + ok = mdfldFindBestPLL(crtc, clk_tmp, refclk, &clock); + + if (!ok) { + DRM_ERROR + ("mdfldFindBestPLL fail in mdfld_crtc_mode_set.\n"); + } else { + m_conv = mdfld_m_converts[(clock.m - MDFLD_M_MIN)]; + + dev_dbg(dev->dev, "dot clock = %d," + "m = %d, p1 = %d, m_conv = %d.\n", + clock.dot, clock.m, + clock.p1, m_conv); + } + + dpll = REG_READ(dpll_reg); + + if (dpll & DPLL_VCO_ENABLE) { + dpll &= ~DPLL_VCO_ENABLE; + REG_WRITE(dpll_reg, dpll); + REG_READ(dpll_reg); + + /* FIXME jliu7 check the DPLL lock bit PIPEACONF[29] */ + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + + /* reset M1, N1 & P1 */ + REG_WRITE(fp_reg, 0); + dpll &= ~MDFLD_P1_MASK; + REG_WRITE(dpll_reg, dpll); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + } + + /* When ungating power of DPLL, needs to wait 0.5us before + * enable the VCO */ + if (dpll & MDFLD_PWR_GATE_EN) { + dpll &= ~MDFLD_PWR_GATE_EN; + REG_WRITE(dpll_reg, dpll); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + } + dpll = 0; + +#if 0 /* FIXME revisit later */ + if (ksel == KSEL_CRYSTAL_19 || ksel == KSEL_BYPASS_19 || + ksel == KSEL_BYPASS_25) + dpll &= ~MDFLD_INPUT_REF_SEL; + else if (ksel == KSEL_BYPASS_83_100) + dpll |= MDFLD_INPUT_REF_SEL; +#endif /* FIXME revisit later */ + + if (is_hdmi) + dpll |= MDFLD_VCO_SEL; + + fp = (clk_n / 2) << 16; + fp |= m_conv; + + /* compute bitmask from p1 value */ + dpll |= (1 << (clock.p1 - 2)) << 17; + +#if 0 /* 1080p30 & 720p */ + dpll = 0x00050000; + fp = 0x000001be; +#endif +#if 0 /* 480p */ + dpll = 0x02010000; + fp = 0x000000d2; +#endif + } else { +#if 0 /*DBI_TPO_480x864*/ + dpll = 0x00020000; + fp = 0x00000156; +#endif /* DBI_TPO_480x864 */ /* get from spec. */ + + dpll = 0x00800000; + fp = 0x000000c1; + } + + REG_WRITE(fp_reg, fp); + REG_WRITE(dpll_reg, dpll); + /* FIXME_MDFLD PO - change 500 to 1 after PO */ + udelay(500); + + dpll |= DPLL_VCO_ENABLE; + REG_WRITE(dpll_reg, dpll); + REG_READ(dpll_reg); + + /* wait for DSI PLL to lock */ + while (timeout < 20000 && + !(REG_READ(pipeconf_reg) & PIPECONF_DSIPLL_LOCK)) { + udelay(150); + timeout++; + } + + if (is_mipi) + goto mrst_crtc_mode_set_exit; + + dev_dbg(dev->dev, "is_mipi = 0x%x\n", is_mipi); + + REG_WRITE(pipeconf_reg, *pipeconf); + REG_READ(pipeconf_reg); + + /* Wait for for the pipe enable to take effect. */ + REG_WRITE(dspcntr_reg, *dspcntr); + psb_intel_wait_for_vblank(dev); + +mrst_crtc_mode_set_exit: + + gma_power_end(dev); + + return 0; +} + +const struct drm_crtc_helper_funcs mdfld_helper_funcs = { + .dpms = mdfld_crtc_dpms, + .mode_fixup = psb_intel_crtc_mode_fixup, + .mode_set = mdfld_crtc_mode_set, + .mode_set_base = mdfld__intel_pipe_set_base, + .prepare = psb_intel_crtc_prepare, + .commit = psb_intel_crtc_commit, +}; + |