| /* |
| * Copyright 2010 Matt Turner. |
| * Copyright 2012 Red Hat |
| * |
| * This file is subject to the terms and conditions of the GNU General |
| * Public License version 2. See the file COPYING in the main |
| * directory of this archive for more details. |
| * |
| * Authors: Matthew Garrett |
| * Matt Turner |
| * Dave Airlie |
| */ |
| |
| #include <linux/delay.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_plane_helper.h> |
| |
| #include "mgag200_drv.h" |
| |
| #define MGAG200_LUT_SIZE 256 |
| |
| /* |
| * This file contains setup code for the CRTC. |
| */ |
| |
| static void mga_crtc_load_lut(struct drm_crtc *crtc) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| struct drm_framebuffer *fb = crtc->primary->fb; |
| int i; |
| |
| if (!crtc->enabled) |
| return; |
| |
| WREG8(DAC_INDEX + MGA1064_INDEX, 0); |
| |
| if (fb && fb->bits_per_pixel == 16) { |
| int inc = (fb->depth == 15) ? 8 : 4; |
| u8 r, b; |
| for (i = 0; i < MGAG200_LUT_SIZE; i += inc) { |
| if (fb->depth == 16) { |
| if (i > (MGAG200_LUT_SIZE >> 1)) { |
| r = b = 0; |
| } else { |
| r = mga_crtc->lut_r[i << 1]; |
| b = mga_crtc->lut_b[i << 1]; |
| } |
| } else { |
| r = mga_crtc->lut_r[i]; |
| b = mga_crtc->lut_b[i]; |
| } |
| /* VGA registers */ |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, r); |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, mga_crtc->lut_g[i]); |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, b); |
| } |
| return; |
| } |
| for (i = 0; i < MGAG200_LUT_SIZE; i++) { |
| /* VGA registers */ |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, mga_crtc->lut_r[i]); |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, mga_crtc->lut_g[i]); |
| WREG8(DAC_INDEX + MGA1064_COL_PAL, mga_crtc->lut_b[i]); |
| } |
| } |
| |
| static inline void mga_wait_vsync(struct mga_device *mdev) |
| { |
| unsigned long timeout = jiffies + HZ/10; |
| unsigned int status = 0; |
| |
| do { |
| status = RREG32(MGAREG_Status); |
| } while ((status & 0x08) && time_before(jiffies, timeout)); |
| timeout = jiffies + HZ/10; |
| status = 0; |
| do { |
| status = RREG32(MGAREG_Status); |
| } while (!(status & 0x08) && time_before(jiffies, timeout)); |
| } |
| |
| static inline void mga_wait_busy(struct mga_device *mdev) |
| { |
| unsigned long timeout = jiffies + HZ; |
| unsigned int status = 0; |
| do { |
| status = RREG8(MGAREG_Status + 2); |
| } while ((status & 0x01) && time_before(jiffies, timeout)); |
| } |
| |
| /* |
| * The core passes the desired mode to the CRTC code to see whether any |
| * CRTC-specific modifications need to be made to it. We're in a position |
| * to just pass that straight through, so this does nothing |
| */ |
| static bool mga_crtc_mode_fixup(struct drm_crtc *crtc, |
| const struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| return true; |
| } |
| |
| static int mga_g200se_set_plls(struct mga_device *mdev, long clock) |
| { |
| unsigned int vcomax, vcomin, pllreffreq; |
| unsigned int delta, tmpdelta, permitteddelta; |
| unsigned int testp, testm, testn; |
| unsigned int p, m, n; |
| unsigned int computed; |
| |
| m = n = p = 0; |
| vcomax = 320000; |
| vcomin = 160000; |
| pllreffreq = 25000; |
| |
| delta = 0xffffffff; |
| permitteddelta = clock * 5 / 1000; |
| |
| for (testp = 8; testp > 0; testp /= 2) { |
| if (clock * testp > vcomax) |
| continue; |
| if (clock * testp < vcomin) |
| continue; |
| |
| for (testn = 17; testn < 256; testn++) { |
| for (testm = 1; testm < 32; testm++) { |
| computed = (pllreffreq * testn) / |
| (testm * testp); |
| if (computed > clock) |
| tmpdelta = computed - clock; |
| else |
| tmpdelta = clock - computed; |
| if (tmpdelta < delta) { |
| delta = tmpdelta; |
| m = testm - 1; |
| n = testn - 1; |
| p = testp - 1; |
| } |
| } |
| } |
| } |
| |
| if (delta > permitteddelta) { |
| printk(KERN_WARNING "PLL delta too large\n"); |
| return 1; |
| } |
| |
| WREG_DAC(MGA1064_PIX_PLLC_M, m); |
| WREG_DAC(MGA1064_PIX_PLLC_N, n); |
| WREG_DAC(MGA1064_PIX_PLLC_P, p); |
| return 0; |
| } |
| |
| static int mga_g200wb_set_plls(struct mga_device *mdev, long clock) |
| { |
| unsigned int vcomax, vcomin, pllreffreq; |
| unsigned int delta, tmpdelta; |
| unsigned int testp, testm, testn; |
| unsigned int p, m, n; |
| unsigned int computed; |
| int i, j, tmpcount, vcount; |
| bool pll_locked = false; |
| u8 tmp; |
| |
| m = n = p = 0; |
| vcomax = 550000; |
| vcomin = 150000; |
| pllreffreq = 48000; |
| |
| delta = 0xffffffff; |
| |
| for (testp = 1; testp < 9; testp++) { |
| if (clock * testp > vcomax) |
| continue; |
| if (clock * testp < vcomin) |
| continue; |
| |
| for (testm = 1; testm < 17; testm++) { |
| for (testn = 1; testn < 151; testn++) { |
| computed = (pllreffreq * testn) / |
| (testm * testp); |
| if (computed > clock) |
| tmpdelta = computed - clock; |
| else |
| tmpdelta = clock - computed; |
| if (tmpdelta < delta) { |
| delta = tmpdelta; |
| n = testn - 1; |
| m = (testm - 1) | ((n >> 1) & 0x80); |
| p = testp - 1; |
| } |
| } |
| } |
| } |
| |
| for (i = 0; i <= 32 && pll_locked == false; i++) { |
| if (i > 0) { |
| WREG8(MGAREG_CRTC_INDEX, 0x1e); |
| tmp = RREG8(MGAREG_CRTC_DATA); |
| if (tmp < 0xff) |
| WREG8(MGAREG_CRTC_DATA, tmp+1); |
| } |
| |
| /* set pixclkdis to 1 */ |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_REMHEADCTL_CLKDIS; |
| WREG8(DAC_DATA, tmp); |
| |
| /* select PLL Set C */ |
| tmp = RREG8(MGAREG_MEM_MISC_READ); |
| tmp |= 0x3 << 2; |
| WREG8(MGAREG_MEM_MISC_WRITE, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN | 0x80; |
| WREG8(DAC_DATA, tmp); |
| |
| udelay(500); |
| |
| /* reset the PLL */ |
| WREG8(DAC_INDEX, MGA1064_VREF_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~0x04; |
| WREG8(DAC_DATA, tmp); |
| |
| udelay(50); |
| |
| /* program pixel pll register */ |
| WREG_DAC(MGA1064_WB_PIX_PLLC_N, n); |
| WREG_DAC(MGA1064_WB_PIX_PLLC_M, m); |
| WREG_DAC(MGA1064_WB_PIX_PLLC_P, p); |
| |
| udelay(50); |
| |
| /* turn pll on */ |
| WREG8(DAC_INDEX, MGA1064_VREF_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= 0x04; |
| WREG_DAC(MGA1064_VREF_CTL, tmp); |
| |
| udelay(500); |
| |
| /* select the pixel pll */ |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK; |
| tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_REMHEADCTL_CLKSL_MSK; |
| tmp |= MGA1064_REMHEADCTL_CLKSL_PLL; |
| WREG8(DAC_DATA, tmp); |
| |
| /* reset dotclock rate bit */ |
| WREG8(MGAREG_SEQ_INDEX, 1); |
| tmp = RREG8(MGAREG_SEQ_DATA); |
| tmp &= ~0x8; |
| WREG8(MGAREG_SEQ_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| vcount = RREG8(MGAREG_VCOUNT); |
| |
| for (j = 0; j < 30 && pll_locked == false; j++) { |
| tmpcount = RREG8(MGAREG_VCOUNT); |
| if (tmpcount < vcount) |
| vcount = 0; |
| if ((tmpcount - vcount) > 2) |
| pll_locked = true; |
| else |
| udelay(5); |
| } |
| } |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_REMHEADCTL_CLKDIS; |
| WREG_DAC(MGA1064_REMHEADCTL, tmp); |
| return 0; |
| } |
| |
| static int mga_g200ev_set_plls(struct mga_device *mdev, long clock) |
| { |
| unsigned int vcomax, vcomin, pllreffreq; |
| unsigned int delta, tmpdelta; |
| unsigned int testp, testm, testn; |
| unsigned int p, m, n; |
| unsigned int computed; |
| u8 tmp; |
| |
| m = n = p = 0; |
| vcomax = 550000; |
| vcomin = 150000; |
| pllreffreq = 50000; |
| |
| delta = 0xffffffff; |
| |
| for (testp = 16; testp > 0; testp--) { |
| if (clock * testp > vcomax) |
| continue; |
| if (clock * testp < vcomin) |
| continue; |
| |
| for (testn = 1; testn < 257; testn++) { |
| for (testm = 1; testm < 17; testm++) { |
| computed = (pllreffreq * testn) / |
| (testm * testp); |
| if (computed > clock) |
| tmpdelta = computed - clock; |
| else |
| tmpdelta = clock - computed; |
| if (tmpdelta < delta) { |
| delta = tmpdelta; |
| n = testn - 1; |
| m = testm - 1; |
| p = testp - 1; |
| } |
| } |
| } |
| } |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| tmp = RREG8(MGAREG_MEM_MISC_READ); |
| tmp |= 0x3 << 2; |
| WREG8(MGAREG_MEM_MISC_WRITE, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT); |
| tmp = RREG8(DAC_DATA); |
| WREG8(DAC_DATA, tmp & ~0x40); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG_DAC(MGA1064_EV_PIX_PLLC_M, m); |
| WREG_DAC(MGA1064_EV_PIX_PLLC_N, n); |
| WREG_DAC(MGA1064_EV_PIX_PLLC_P, p); |
| |
| udelay(50); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN; |
| WREG8(DAC_DATA, tmp); |
| |
| udelay(500); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK; |
| tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT); |
| tmp = RREG8(DAC_DATA); |
| WREG8(DAC_DATA, tmp | 0x40); |
| |
| tmp = RREG8(MGAREG_MEM_MISC_READ); |
| tmp |= (0x3 << 2); |
| WREG8(MGAREG_MEM_MISC_WRITE, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| return 0; |
| } |
| |
| static int mga_g200eh_set_plls(struct mga_device *mdev, long clock) |
| { |
| unsigned int vcomax, vcomin, pllreffreq; |
| unsigned int delta, tmpdelta; |
| unsigned int testp, testm, testn; |
| unsigned int p, m, n; |
| unsigned int computed; |
| int i, j, tmpcount, vcount; |
| u8 tmp; |
| bool pll_locked = false; |
| |
| m = n = p = 0; |
| vcomax = 800000; |
| vcomin = 400000; |
| pllreffreq = 33333; |
| |
| delta = 0xffffffff; |
| |
| for (testp = 16; testp > 0; testp >>= 1) { |
| if (clock * testp > vcomax) |
| continue; |
| if (clock * testp < vcomin) |
| continue; |
| |
| for (testm = 1; testm < 33; testm++) { |
| for (testn = 17; testn < 257; testn++) { |
| computed = (pllreffreq * testn) / |
| (testm * testp); |
| if (computed > clock) |
| tmpdelta = computed - clock; |
| else |
| tmpdelta = clock - computed; |
| if (tmpdelta < delta) { |
| delta = tmpdelta; |
| n = testn - 1; |
| m = (testm - 1); |
| p = testp - 1; |
| } |
| if ((clock * testp) >= 600000) |
| p |= 0x80; |
| } |
| } |
| } |
| for (i = 0; i <= 32 && pll_locked == false; i++) { |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| tmp = RREG8(MGAREG_MEM_MISC_READ); |
| tmp |= 0x3 << 2; |
| WREG8(MGAREG_MEM_MISC_WRITE, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN; |
| WREG8(DAC_DATA, tmp); |
| |
| udelay(500); |
| |
| WREG_DAC(MGA1064_EH_PIX_PLLC_M, m); |
| WREG_DAC(MGA1064_EH_PIX_PLLC_N, n); |
| WREG_DAC(MGA1064_EH_PIX_PLLC_P, p); |
| |
| udelay(500); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK; |
| tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS; |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN; |
| WREG8(DAC_DATA, tmp); |
| |
| vcount = RREG8(MGAREG_VCOUNT); |
| |
| for (j = 0; j < 30 && pll_locked == false; j++) { |
| tmpcount = RREG8(MGAREG_VCOUNT); |
| if (tmpcount < vcount) |
| vcount = 0; |
| if ((tmpcount - vcount) > 2) |
| pll_locked = true; |
| else |
| udelay(5); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int mga_g200er_set_plls(struct mga_device *mdev, long clock) |
| { |
| unsigned int vcomax, vcomin, pllreffreq; |
| unsigned int delta, tmpdelta; |
| int testr, testn, testm, testo; |
| unsigned int p, m, n; |
| unsigned int computed, vco; |
| int tmp; |
| const unsigned int m_div_val[] = { 1, 2, 4, 8 }; |
| |
| m = n = p = 0; |
| vcomax = 1488000; |
| vcomin = 1056000; |
| pllreffreq = 48000; |
| |
| delta = 0xffffffff; |
| |
| for (testr = 0; testr < 4; testr++) { |
| if (delta == 0) |
| break; |
| for (testn = 5; testn < 129; testn++) { |
| if (delta == 0) |
| break; |
| for (testm = 3; testm >= 0; testm--) { |
| if (delta == 0) |
| break; |
| for (testo = 5; testo < 33; testo++) { |
| vco = pllreffreq * (testn + 1) / |
| (testr + 1); |
| if (vco < vcomin) |
| continue; |
| if (vco > vcomax) |
| continue; |
| computed = vco / (m_div_val[testm] * (testo + 1)); |
| if (computed > clock) |
| tmpdelta = computed - clock; |
| else |
| tmpdelta = clock - computed; |
| if (tmpdelta < delta) { |
| delta = tmpdelta; |
| m = testm | (testo << 3); |
| n = testn; |
| p = testr | (testr << 3); |
| } |
| } |
| } |
| } |
| } |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS; |
| WREG8(DAC_DATA, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= MGA1064_REMHEADCTL_CLKDIS; |
| WREG8(DAC_DATA, tmp); |
| |
| tmp = RREG8(MGAREG_MEM_MISC_READ); |
| tmp |= (0x3<<2) | 0xc0; |
| WREG8(MGAREG_MEM_MISC_WRITE, tmp); |
| |
| WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS; |
| tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN; |
| WREG8(DAC_DATA, tmp); |
| |
| udelay(500); |
| |
| WREG_DAC(MGA1064_ER_PIX_PLLC_N, n); |
| WREG_DAC(MGA1064_ER_PIX_PLLC_M, m); |
| WREG_DAC(MGA1064_ER_PIX_PLLC_P, p); |
| |
| udelay(50); |
| |
| return 0; |
| } |
| |
| static int mga_crtc_set_plls(struct mga_device *mdev, long clock) |
| { |
| switch(mdev->type) { |
| case G200_SE_A: |
| case G200_SE_B: |
| return mga_g200se_set_plls(mdev, clock); |
| break; |
| case G200_WB: |
| return mga_g200wb_set_plls(mdev, clock); |
| break; |
| case G200_EV: |
| return mga_g200ev_set_plls(mdev, clock); |
| break; |
| case G200_EH: |
| return mga_g200eh_set_plls(mdev, clock); |
| break; |
| case G200_ER: |
| return mga_g200er_set_plls(mdev, clock); |
| break; |
| } |
| return 0; |
| } |
| |
| static void mga_g200wb_prepare(struct drm_crtc *crtc) |
| { |
| struct mga_device *mdev = crtc->dev->dev_private; |
| u8 tmp; |
| int iter_max; |
| |
| /* 1- The first step is to warn the BMC of an upcoming mode change. |
| * We are putting the misc<0> to output.*/ |
| |
| WREG8(DAC_INDEX, MGA1064_GEN_IO_CTL); |
| tmp = RREG8(DAC_DATA); |
| tmp |= 0x10; |
| WREG_DAC(MGA1064_GEN_IO_CTL, tmp); |
| |
| /* we are putting a 1 on the misc<0> line */ |
| WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA); |
| tmp = RREG8(DAC_DATA); |
| tmp |= 0x10; |
| WREG_DAC(MGA1064_GEN_IO_DATA, tmp); |
| |
| /* 2- Second step to mask and further scan request |
| * This will be done by asserting the remfreqmsk bit (XSPAREREG<7>) |
| */ |
| WREG8(DAC_INDEX, MGA1064_SPAREREG); |
| tmp = RREG8(DAC_DATA); |
| tmp |= 0x80; |
| WREG_DAC(MGA1064_SPAREREG, tmp); |
| |
| /* 3a- the third step is to verifu if there is an active scan |
| * We are searching for a 0 on remhsyncsts <XSPAREREG<0>) |
| */ |
| iter_max = 300; |
| while (!(tmp & 0x1) && iter_max) { |
| WREG8(DAC_INDEX, MGA1064_SPAREREG); |
| tmp = RREG8(DAC_DATA); |
| udelay(1000); |
| iter_max--; |
| } |
| |
| /* 3b- this step occurs only if the remove is actually scanning |
| * we are waiting for the end of the frame which is a 1 on |
| * remvsyncsts (XSPAREREG<1>) |
| */ |
| if (iter_max) { |
| iter_max = 300; |
| while ((tmp & 0x2) && iter_max) { |
| WREG8(DAC_INDEX, MGA1064_SPAREREG); |
| tmp = RREG8(DAC_DATA); |
| udelay(1000); |
| iter_max--; |
| } |
| } |
| } |
| |
| static void mga_g200wb_commit(struct drm_crtc *crtc) |
| { |
| u8 tmp; |
| struct mga_device *mdev = crtc->dev->dev_private; |
| |
| /* 1- The first step is to ensure that the vrsten and hrsten are set */ |
| WREG8(MGAREG_CRTCEXT_INDEX, 1); |
| tmp = RREG8(MGAREG_CRTCEXT_DATA); |
| WREG8(MGAREG_CRTCEXT_DATA, tmp | 0x88); |
| |
| /* 2- second step is to assert the rstlvl2 */ |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL2); |
| tmp = RREG8(DAC_DATA); |
| tmp |= 0x8; |
| WREG8(DAC_DATA, tmp); |
| |
| /* wait 10 us */ |
| udelay(10); |
| |
| /* 3- deassert rstlvl2 */ |
| tmp &= ~0x08; |
| WREG8(DAC_INDEX, MGA1064_REMHEADCTL2); |
| WREG8(DAC_DATA, tmp); |
| |
| /* 4- remove mask of scan request */ |
| WREG8(DAC_INDEX, MGA1064_SPAREREG); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~0x80; |
| WREG8(DAC_DATA, tmp); |
| |
| /* 5- put back a 0 on the misc<0> line */ |
| WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA); |
| tmp = RREG8(DAC_DATA); |
| tmp &= ~0x10; |
| WREG_DAC(MGA1064_GEN_IO_DATA, tmp); |
| } |
| |
| /* |
| This is how the framebuffer base address is stored in g200 cards: |
| * Assume @offset is the gpu_addr variable of the framebuffer object |
| * Then addr is the number of _pixels_ (not bytes) from the start of |
| VRAM to the first pixel we want to display. (divided by 2 for 32bit |
| framebuffers) |
| * addr is stored in the CRTCEXT0, CRTCC and CRTCD registers |
| addr<20> -> CRTCEXT0<6> |
| addr<19-16> -> CRTCEXT0<3-0> |
| addr<15-8> -> CRTCC<7-0> |
| addr<7-0> -> CRTCD<7-0> |
| CRTCEXT0 has to be programmed last to trigger an update and make the |
| new addr variable take effect. |
| */ |
| static void mga_set_start_address(struct drm_crtc *crtc, unsigned offset) |
| { |
| struct mga_device *mdev = crtc->dev->dev_private; |
| u32 addr; |
| int count; |
| u8 crtcext0; |
| |
| while (RREG8(0x1fda) & 0x08); |
| while (!(RREG8(0x1fda) & 0x08)); |
| |
| count = RREG8(MGAREG_VCOUNT) + 2; |
| while (RREG8(MGAREG_VCOUNT) < count); |
| |
| WREG8(MGAREG_CRTCEXT_INDEX, 0); |
| crtcext0 = RREG8(MGAREG_CRTCEXT_DATA); |
| crtcext0 &= 0xB0; |
| addr = offset / 8; |
| /* Can't store addresses any higher than that... |
| but we also don't have more than 16MB of memory, so it should be fine. */ |
| WARN_ON(addr > 0x1fffff); |
| crtcext0 |= (!!(addr & (1<<20)))<<6; |
| WREG_CRT(0x0d, (u8)(addr & 0xff)); |
| WREG_CRT(0x0c, (u8)(addr >> 8) & 0xff); |
| WREG_ECRT(0x0, ((u8)(addr >> 16) & 0xf) | crtcext0); |
| } |
| |
| |
| /* ast is different - we will force move buffers out of VRAM */ |
| static int mga_crtc_do_set_base(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| int x, int y, int atomic) |
| { |
| struct mga_device *mdev = crtc->dev->dev_private; |
| struct drm_gem_object *obj; |
| struct mga_framebuffer *mga_fb; |
| struct mgag200_bo *bo; |
| int ret; |
| u64 gpu_addr; |
| |
| /* push the previous fb to system ram */ |
| if (!atomic && fb) { |
| mga_fb = to_mga_framebuffer(fb); |
| obj = mga_fb->obj; |
| bo = gem_to_mga_bo(obj); |
| ret = mgag200_bo_reserve(bo, false); |
| if (ret) |
| return ret; |
| mgag200_bo_push_sysram(bo); |
| mgag200_bo_unreserve(bo); |
| } |
| |
| mga_fb = to_mga_framebuffer(crtc->primary->fb); |
| obj = mga_fb->obj; |
| bo = gem_to_mga_bo(obj); |
| |
| ret = mgag200_bo_reserve(bo, false); |
| if (ret) |
| return ret; |
| |
| ret = mgag200_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr); |
| if (ret) { |
| mgag200_bo_unreserve(bo); |
| return ret; |
| } |
| |
| if (&mdev->mfbdev->mfb == mga_fb) { |
| /* if pushing console in kmap it */ |
| ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); |
| if (ret) |
| DRM_ERROR("failed to kmap fbcon\n"); |
| |
| } |
| mgag200_bo_unreserve(bo); |
| |
| mga_set_start_address(crtc, (u32)gpu_addr); |
| |
| return 0; |
| } |
| |
| static int mga_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| struct drm_framebuffer *old_fb) |
| { |
| return mga_crtc_do_set_base(crtc, old_fb, x, y, 0); |
| } |
| |
| static int mga_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 mga_device *mdev = dev->dev_private; |
| int hdisplay, hsyncstart, hsyncend, htotal; |
| int vdisplay, vsyncstart, vsyncend, vtotal; |
| int pitch; |
| int option = 0, option2 = 0; |
| int i; |
| unsigned char misc = 0; |
| unsigned char ext_vga[6]; |
| u8 bppshift; |
| |
| static unsigned char dacvalue[] = { |
| /* 0x00: */ 0, 0, 0, 0, 0, 0, 0x00, 0, |
| /* 0x08: */ 0, 0, 0, 0, 0, 0, 0, 0, |
| /* 0x10: */ 0, 0, 0, 0, 0, 0, 0, 0, |
| /* 0x18: */ 0x00, 0, 0xC9, 0xFF, 0xBF, 0x20, 0x1F, 0x20, |
| /* 0x20: */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| /* 0x28: */ 0x00, 0x00, 0x00, 0x00, 0, 0, 0, 0x40, |
| /* 0x30: */ 0x00, 0xB0, 0x00, 0xC2, 0x34, 0x14, 0x02, 0x83, |
| /* 0x38: */ 0x00, 0x93, 0x00, 0x77, 0x00, 0x00, 0x00, 0x3A, |
| /* 0x40: */ 0, 0, 0, 0, 0, 0, 0, 0, |
| /* 0x48: */ 0, 0, 0, 0, 0, 0, 0, 0 |
| }; |
| |
| bppshift = mdev->bpp_shifts[(crtc->primary->fb->bits_per_pixel >> 3) - 1]; |
| |
| switch (mdev->type) { |
| case G200_SE_A: |
| case G200_SE_B: |
| dacvalue[MGA1064_VREF_CTL] = 0x03; |
| dacvalue[MGA1064_PIX_CLK_CTL] = MGA1064_PIX_CLK_CTL_SEL_PLL; |
| dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_DAC_EN | |
| MGA1064_MISC_CTL_VGA8 | |
| MGA1064_MISC_CTL_DAC_RAM_CS; |
| if (mdev->has_sdram) |
| option = 0x40049120; |
| else |
| option = 0x4004d120; |
| option2 = 0x00008000; |
| break; |
| case G200_WB: |
| dacvalue[MGA1064_VREF_CTL] = 0x07; |
| option = 0x41049120; |
| option2 = 0x0000b000; |
| break; |
| case G200_EV: |
| dacvalue[MGA1064_PIX_CLK_CTL] = MGA1064_PIX_CLK_CTL_SEL_PLL; |
| dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_VGA8 | |
| MGA1064_MISC_CTL_DAC_RAM_CS; |
| option = 0x00000120; |
| option2 = 0x0000b000; |
| break; |
| case G200_EH: |
| dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_VGA8 | |
| MGA1064_MISC_CTL_DAC_RAM_CS; |
| option = 0x00000120; |
| option2 = 0x0000b000; |
| break; |
| case G200_ER: |
| break; |
| } |
| |
| switch (crtc->primary->fb->bits_per_pixel) { |
| case 8: |
| dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_8bits; |
| break; |
| case 16: |
| if (crtc->primary->fb->depth == 15) |
| dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_15bits; |
| else |
| dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_16bits; |
| break; |
| case 24: |
| dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_24bits; |
| break; |
| case 32: |
| dacvalue[MGA1064_MUL_CTL] = MGA1064_MUL_CTL_32_24bits; |
| break; |
| } |
| |
| if (mode->flags & DRM_MODE_FLAG_NHSYNC) |
| misc |= 0x40; |
| if (mode->flags & DRM_MODE_FLAG_NVSYNC) |
| misc |= 0x80; |
| |
| |
| for (i = 0; i < sizeof(dacvalue); i++) { |
| if ((i <= 0x17) || |
| (i == 0x1b) || |
| (i == 0x1c) || |
| ((i >= 0x1f) && (i <= 0x29)) || |
| ((i >= 0x30) && (i <= 0x37))) |
| continue; |
| if (IS_G200_SE(mdev) && |
| ((i == 0x2c) || (i == 0x2d) || (i == 0x2e))) |
| continue; |
| if ((mdev->type == G200_EV || mdev->type == G200_WB || mdev->type == G200_EH) && |
| (i >= 0x44) && (i <= 0x4e)) |
| continue; |
| |
| WREG_DAC(i, dacvalue[i]); |
| } |
| |
| if (mdev->type == G200_ER) |
| WREG_DAC(0x90, 0); |
| |
| if (option) |
| pci_write_config_dword(dev->pdev, PCI_MGA_OPTION, option); |
| if (option2) |
| pci_write_config_dword(dev->pdev, PCI_MGA_OPTION2, option2); |
| |
| WREG_SEQ(2, 0xf); |
| WREG_SEQ(3, 0); |
| WREG_SEQ(4, 0xe); |
| |
| pitch = crtc->primary->fb->pitches[0] / (crtc->primary->fb->bits_per_pixel / 8); |
| if (crtc->primary->fb->bits_per_pixel == 24) |
| pitch = (pitch * 3) >> (4 - bppshift); |
| else |
| pitch = pitch >> (4 - bppshift); |
| |
| hdisplay = mode->hdisplay / 8 - 1; |
| hsyncstart = mode->hsync_start / 8 - 1; |
| hsyncend = mode->hsync_end / 8 - 1; |
| htotal = mode->htotal / 8 - 1; |
| |
| /* Work around hardware quirk */ |
| if ((htotal & 0x07) == 0x06 || (htotal & 0x07) == 0x04) |
| htotal++; |
| |
| vdisplay = mode->vdisplay - 1; |
| vsyncstart = mode->vsync_start - 1; |
| vsyncend = mode->vsync_end - 1; |
| vtotal = mode->vtotal - 2; |
| |
| WREG_GFX(0, 0); |
| WREG_GFX(1, 0); |
| WREG_GFX(2, 0); |
| WREG_GFX(3, 0); |
| WREG_GFX(4, 0); |
| WREG_GFX(5, 0x40); |
| WREG_GFX(6, 0x5); |
| WREG_GFX(7, 0xf); |
| WREG_GFX(8, 0xf); |
| |
| WREG_CRT(0, htotal - 4); |
| WREG_CRT(1, hdisplay); |
| WREG_CRT(2, hdisplay); |
| WREG_CRT(3, (htotal & 0x1F) | 0x80); |
| WREG_CRT(4, hsyncstart); |
| WREG_CRT(5, ((htotal & 0x20) << 2) | (hsyncend & 0x1F)); |
| WREG_CRT(6, vtotal & 0xFF); |
| WREG_CRT(7, ((vtotal & 0x100) >> 8) | |
| ((vdisplay & 0x100) >> 7) | |
| ((vsyncstart & 0x100) >> 6) | |
| ((vdisplay & 0x100) >> 5) | |
| ((vdisplay & 0x100) >> 4) | /* linecomp */ |
| ((vtotal & 0x200) >> 4)| |
| ((vdisplay & 0x200) >> 3) | |
| ((vsyncstart & 0x200) >> 2)); |
| WREG_CRT(9, ((vdisplay & 0x200) >> 4) | |
| ((vdisplay & 0x200) >> 3)); |
| WREG_CRT(10, 0); |
| WREG_CRT(11, 0); |
| WREG_CRT(12, 0); |
| WREG_CRT(13, 0); |
| WREG_CRT(14, 0); |
| WREG_CRT(15, 0); |
| WREG_CRT(16, vsyncstart & 0xFF); |
| WREG_CRT(17, (vsyncend & 0x0F) | 0x20); |
| WREG_CRT(18, vdisplay & 0xFF); |
| WREG_CRT(19, pitch & 0xFF); |
| WREG_CRT(20, 0); |
| WREG_CRT(21, vdisplay & 0xFF); |
| WREG_CRT(22, (vtotal + 1) & 0xFF); |
| WREG_CRT(23, 0xc3); |
| WREG_CRT(24, vdisplay & 0xFF); |
| |
| ext_vga[0] = 0; |
| ext_vga[5] = 0; |
| |
| /* TODO interlace */ |
| |
| ext_vga[0] |= (pitch & 0x300) >> 4; |
| ext_vga[1] = (((htotal - 4) & 0x100) >> 8) | |
| ((hdisplay & 0x100) >> 7) | |
| ((hsyncstart & 0x100) >> 6) | |
| (htotal & 0x40); |
| ext_vga[2] = ((vtotal & 0xc00) >> 10) | |
| ((vdisplay & 0x400) >> 8) | |
| ((vdisplay & 0xc00) >> 7) | |
| ((vsyncstart & 0xc00) >> 5) | |
| ((vdisplay & 0x400) >> 3); |
| if (crtc->primary->fb->bits_per_pixel == 24) |
| ext_vga[3] = (((1 << bppshift) * 3) - 1) | 0x80; |
| else |
| ext_vga[3] = ((1 << bppshift) - 1) | 0x80; |
| ext_vga[4] = 0; |
| if (mdev->type == G200_WB) |
| ext_vga[1] |= 0x88; |
| |
| /* Set pixel clocks */ |
| misc = 0x2d; |
| WREG8(MGA_MISC_OUT, misc); |
| |
| mga_crtc_set_plls(mdev, mode->clock); |
| |
| for (i = 0; i < 6; i++) { |
| WREG_ECRT(i, ext_vga[i]); |
| } |
| |
| if (mdev->type == G200_ER) |
| WREG_ECRT(0x24, 0x5); |
| |
| if (mdev->type == G200_EV) { |
| WREG_ECRT(6, 0); |
| } |
| |
| WREG_ECRT(0, ext_vga[0]); |
| /* Enable mga pixel clock */ |
| misc = 0x2d; |
| |
| WREG8(MGA_MISC_OUT, misc); |
| |
| if (adjusted_mode) |
| memcpy(&mdev->mode, mode, sizeof(struct drm_display_mode)); |
| |
| mga_crtc_do_set_base(crtc, old_fb, x, y, 0); |
| |
| /* reset tagfifo */ |
| if (mdev->type == G200_ER) { |
| u32 mem_ctl = RREG32(MGAREG_MEMCTL); |
| u8 seq1; |
| |
| /* screen off */ |
| WREG8(MGAREG_SEQ_INDEX, 0x01); |
| seq1 = RREG8(MGAREG_SEQ_DATA) | 0x20; |
| WREG8(MGAREG_SEQ_DATA, seq1); |
| |
| WREG32(MGAREG_MEMCTL, mem_ctl | 0x00200000); |
| udelay(1000); |
| WREG32(MGAREG_MEMCTL, mem_ctl & ~0x00200000); |
| |
| WREG8(MGAREG_SEQ_DATA, seq1 & ~0x20); |
| } |
| |
| |
| if (IS_G200_SE(mdev)) { |
| if (mdev->unique_rev_id >= 0x02) { |
| u8 hi_pri_lvl; |
| u32 bpp; |
| u32 mb; |
| |
| if (crtc->primary->fb->bits_per_pixel > 16) |
| bpp = 32; |
| else if (crtc->primary->fb->bits_per_pixel > 8) |
| bpp = 16; |
| else |
| bpp = 8; |
| |
| mb = (mode->clock * bpp) / 1000; |
| if (mb > 3100) |
| hi_pri_lvl = 0; |
| else if (mb > 2600) |
| hi_pri_lvl = 1; |
| else if (mb > 1900) |
| hi_pri_lvl = 2; |
| else if (mb > 1160) |
| hi_pri_lvl = 3; |
| else if (mb > 440) |
| hi_pri_lvl = 4; |
| else |
| hi_pri_lvl = 5; |
| |
| WREG8(MGAREG_CRTCEXT_INDEX, 0x06); |
| WREG8(MGAREG_CRTCEXT_DATA, hi_pri_lvl); |
| } else { |
| WREG8(MGAREG_CRTCEXT_INDEX, 0x06); |
| if (mdev->unique_rev_id >= 0x01) |
| WREG8(MGAREG_CRTCEXT_DATA, 0x03); |
| else |
| WREG8(MGAREG_CRTCEXT_DATA, 0x04); |
| } |
| } |
| return 0; |
| } |
| |
| #if 0 /* code from mjg to attempt D3 on crtc dpms off - revisit later */ |
| static int mga_suspend(struct drm_crtc *crtc) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| struct pci_dev *pdev = dev->pdev; |
| int option; |
| |
| if (mdev->suspended) |
| return 0; |
| |
| WREG_SEQ(1, 0x20); |
| WREG_ECRT(1, 0x30); |
| /* Disable the pixel clock */ |
| WREG_DAC(0x1a, 0x05); |
| /* Power down the DAC */ |
| WREG_DAC(0x1e, 0x18); |
| /* Power down the pixel PLL */ |
| WREG_DAC(0x1a, 0x0d); |
| |
| /* Disable PLLs and clocks */ |
| pci_read_config_dword(pdev, PCI_MGA_OPTION, &option); |
| option &= ~(0x1F8024); |
| pci_write_config_dword(pdev, PCI_MGA_OPTION, option); |
| pci_set_power_state(pdev, PCI_D3hot); |
| pci_disable_device(pdev); |
| |
| mdev->suspended = true; |
| |
| return 0; |
| } |
| |
| static int mga_resume(struct drm_crtc *crtc) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| struct pci_dev *pdev = dev->pdev; |
| int option; |
| |
| if (!mdev->suspended) |
| return 0; |
| |
| pci_set_power_state(pdev, PCI_D0); |
| pci_enable_device(pdev); |
| |
| /* Disable sysclk */ |
| pci_read_config_dword(pdev, PCI_MGA_OPTION, &option); |
| option &= ~(0x4); |
| pci_write_config_dword(pdev, PCI_MGA_OPTION, option); |
| |
| mdev->suspended = false; |
| |
| return 0; |
| } |
| |
| #endif |
| |
| static void mga_crtc_dpms(struct drm_crtc *crtc, int mode) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| u8 seq1 = 0, crtcext1 = 0; |
| |
| switch (mode) { |
| case DRM_MODE_DPMS_ON: |
| seq1 = 0; |
| crtcext1 = 0; |
| mga_crtc_load_lut(crtc); |
| break; |
| case DRM_MODE_DPMS_STANDBY: |
| seq1 = 0x20; |
| crtcext1 = 0x10; |
| break; |
| case DRM_MODE_DPMS_SUSPEND: |
| seq1 = 0x20; |
| crtcext1 = 0x20; |
| break; |
| case DRM_MODE_DPMS_OFF: |
| seq1 = 0x20; |
| crtcext1 = 0x30; |
| break; |
| } |
| |
| #if 0 |
| if (mode == DRM_MODE_DPMS_OFF) { |
| mga_suspend(crtc); |
| } |
| #endif |
| WREG8(MGAREG_SEQ_INDEX, 0x01); |
| seq1 |= RREG8(MGAREG_SEQ_DATA) & ~0x20; |
| mga_wait_vsync(mdev); |
| mga_wait_busy(mdev); |
| WREG8(MGAREG_SEQ_DATA, seq1); |
| msleep(20); |
| WREG8(MGAREG_CRTCEXT_INDEX, 0x01); |
| crtcext1 |= RREG8(MGAREG_CRTCEXT_DATA) & ~0x30; |
| WREG8(MGAREG_CRTCEXT_DATA, crtcext1); |
| |
| #if 0 |
| if (mode == DRM_MODE_DPMS_ON && mdev->suspended == true) { |
| mga_resume(crtc); |
| drm_helper_resume_force_mode(dev); |
| } |
| #endif |
| } |
| |
| /* |
| * This is called before a mode is programmed. A typical use might be to |
| * enable DPMS during the programming to avoid seeing intermediate stages, |
| * but that's not relevant to us |
| */ |
| static void mga_crtc_prepare(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| u8 tmp; |
| |
| /* mga_resume(crtc);*/ |
| |
| WREG8(MGAREG_CRTC_INDEX, 0x11); |
| tmp = RREG8(MGAREG_CRTC_DATA); |
| WREG_CRT(0x11, tmp | 0x80); |
| |
| if (mdev->type == G200_SE_A || mdev->type == G200_SE_B) { |
| WREG_SEQ(0, 1); |
| msleep(50); |
| WREG_SEQ(1, 0x20); |
| msleep(20); |
| } else { |
| WREG8(MGAREG_SEQ_INDEX, 0x1); |
| tmp = RREG8(MGAREG_SEQ_DATA); |
| |
| /* start sync reset */ |
| WREG_SEQ(0, 1); |
| WREG_SEQ(1, tmp | 0x20); |
| } |
| |
| if (mdev->type == G200_WB) |
| mga_g200wb_prepare(crtc); |
| |
| WREG_CRT(17, 0); |
| } |
| |
| /* |
| * This is called after a mode is programmed. It should reverse anything done |
| * by the prepare function |
| */ |
| static void mga_crtc_commit(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct mga_device *mdev = dev->dev_private; |
| const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| u8 tmp; |
| |
| if (mdev->type == G200_WB) |
| mga_g200wb_commit(crtc); |
| |
| if (mdev->type == G200_SE_A || mdev->type == G200_SE_B) { |
| msleep(50); |
| WREG_SEQ(1, 0x0); |
| msleep(20); |
| WREG_SEQ(0, 0x3); |
| } else { |
| WREG8(MGAREG_SEQ_INDEX, 0x1); |
| tmp = RREG8(MGAREG_SEQ_DATA); |
| |
| tmp &= ~0x20; |
| WREG_SEQ(0x1, tmp); |
| WREG_SEQ(0, 3); |
| } |
| crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
| } |
| |
| /* |
| * The core can pass us a set of gamma values to program. We actually only |
| * use this for 8-bit mode so can't perform smooth fades on deeper modes, |
| * but it's a requirement that we provide the function |
| */ |
| static void mga_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, |
| u16 *blue, uint32_t start, uint32_t size) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| int end = (start + size > MGAG200_LUT_SIZE) ? MGAG200_LUT_SIZE : start + size; |
| int i; |
| |
| for (i = start; i < end; i++) { |
| mga_crtc->lut_r[i] = red[i] >> 8; |
| mga_crtc->lut_g[i] = green[i] >> 8; |
| mga_crtc->lut_b[i] = blue[i] >> 8; |
| } |
| mga_crtc_load_lut(crtc); |
| } |
| |
| /* Simple cleanup function */ |
| static void mga_crtc_destroy(struct drm_crtc *crtc) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| |
| drm_crtc_cleanup(crtc); |
| kfree(mga_crtc); |
| } |
| |
| static void mga_crtc_disable(struct drm_crtc *crtc) |
| { |
| int ret; |
| DRM_DEBUG_KMS("\n"); |
| mga_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); |
| if (crtc->primary->fb) { |
| struct mga_framebuffer *mga_fb = to_mga_framebuffer(crtc->primary->fb); |
| struct drm_gem_object *obj = mga_fb->obj; |
| struct mgag200_bo *bo = gem_to_mga_bo(obj); |
| ret = mgag200_bo_reserve(bo, false); |
| if (ret) |
| return; |
| mgag200_bo_push_sysram(bo); |
| mgag200_bo_unreserve(bo); |
| } |
| crtc->primary->fb = NULL; |
| } |
| |
| /* These provide the minimum set of functions required to handle a CRTC */ |
| static const struct drm_crtc_funcs mga_crtc_funcs = { |
| .cursor_set = mga_crtc_cursor_set, |
| .cursor_move = mga_crtc_cursor_move, |
| .gamma_set = mga_crtc_gamma_set, |
| .set_config = drm_crtc_helper_set_config, |
| .destroy = mga_crtc_destroy, |
| }; |
| |
| static const struct drm_crtc_helper_funcs mga_helper_funcs = { |
| .disable = mga_crtc_disable, |
| .dpms = mga_crtc_dpms, |
| .mode_fixup = mga_crtc_mode_fixup, |
| .mode_set = mga_crtc_mode_set, |
| .mode_set_base = mga_crtc_mode_set_base, |
| .prepare = mga_crtc_prepare, |
| .commit = mga_crtc_commit, |
| .load_lut = mga_crtc_load_lut, |
| }; |
| |
| /* CRTC setup */ |
| static void mga_crtc_init(struct mga_device *mdev) |
| { |
| struct mga_crtc *mga_crtc; |
| int i; |
| |
| mga_crtc = kzalloc(sizeof(struct mga_crtc) + |
| (MGAG200FB_CONN_LIMIT * sizeof(struct drm_connector *)), |
| GFP_KERNEL); |
| |
| if (mga_crtc == NULL) |
| return; |
| |
| drm_crtc_init(mdev->dev, &mga_crtc->base, &mga_crtc_funcs); |
| |
| drm_mode_crtc_set_gamma_size(&mga_crtc->base, MGAG200_LUT_SIZE); |
| mdev->mode_info.crtc = mga_crtc; |
| |
| for (i = 0; i < MGAG200_LUT_SIZE; i++) { |
| mga_crtc->lut_r[i] = i; |
| mga_crtc->lut_g[i] = i; |
| mga_crtc->lut_b[i] = i; |
| } |
| |
| drm_crtc_helper_add(&mga_crtc->base, &mga_helper_funcs); |
| } |
| |
| /** Sets the color ramps on behalf of fbcon */ |
| void mga_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
| u16 blue, int regno) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| |
| mga_crtc->lut_r[regno] = red >> 8; |
| mga_crtc->lut_g[regno] = green >> 8; |
| mga_crtc->lut_b[regno] = blue >> 8; |
| } |
| |
| /** Gets the color ramps on behalf of fbcon */ |
| void mga_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
| u16 *blue, int regno) |
| { |
| struct mga_crtc *mga_crtc = to_mga_crtc(crtc); |
| |
| *red = (u16)mga_crtc->lut_r[regno] << 8; |
| *green = (u16)mga_crtc->lut_g[regno] << 8; |
| *blue = (u16)mga_crtc->lut_b[regno] << 8; |
| } |
| |
| /* |
| * The encoder comes after the CRTC in the output pipeline, but before |
| * the connector. It's responsible for ensuring that the digital |
| * stream is appropriately converted into the output format. Setup is |
| * very simple in this case - all we have to do is inform qemu of the |
| * colour depth in order to ensure that it displays appropriately |
| */ |
| |
| /* |
| * These functions are analagous to those in the CRTC code, but are intended |
| * to handle any encoder-specific limitations |
| */ |
| static bool mga_encoder_mode_fixup(struct drm_encoder *encoder, |
| const struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| return true; |
| } |
| |
| static void mga_encoder_mode_set(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| |
| } |
| |
| static void mga_encoder_dpms(struct drm_encoder *encoder, int state) |
| { |
| return; |
| } |
| |
| static void mga_encoder_prepare(struct drm_encoder *encoder) |
| { |
| } |
| |
| static void mga_encoder_commit(struct drm_encoder *encoder) |
| { |
| } |
| |
| static void mga_encoder_destroy(struct drm_encoder *encoder) |
| { |
| struct mga_encoder *mga_encoder = to_mga_encoder(encoder); |
| drm_encoder_cleanup(encoder); |
| kfree(mga_encoder); |
| } |
| |
| static const struct drm_encoder_helper_funcs mga_encoder_helper_funcs = { |
| .dpms = mga_encoder_dpms, |
| .mode_fixup = mga_encoder_mode_fixup, |
| .mode_set = mga_encoder_mode_set, |
| .prepare = mga_encoder_prepare, |
| .commit = mga_encoder_commit, |
| }; |
| |
| static const struct drm_encoder_funcs mga_encoder_encoder_funcs = { |
| .destroy = mga_encoder_destroy, |
| }; |
| |
| static struct drm_encoder *mga_encoder_init(struct drm_device *dev) |
| { |
| struct drm_encoder *encoder; |
| struct mga_encoder *mga_encoder; |
| |
| mga_encoder = kzalloc(sizeof(struct mga_encoder), GFP_KERNEL); |
| if (!mga_encoder) |
| return NULL; |
| |
| encoder = &mga_encoder->base; |
| encoder->possible_crtcs = 0x1; |
| |
| drm_encoder_init(dev, encoder, &mga_encoder_encoder_funcs, |
| DRM_MODE_ENCODER_DAC); |
| drm_encoder_helper_add(encoder, &mga_encoder_helper_funcs); |
| |
| return encoder; |
| } |
| |
| |
| static int mga_vga_get_modes(struct drm_connector *connector) |
| { |
| struct mga_connector *mga_connector = to_mga_connector(connector); |
| struct edid *edid; |
| int ret = 0; |
| |
| edid = drm_get_edid(connector, &mga_connector->i2c->adapter); |
| if (edid) { |
| drm_mode_connector_update_edid_property(connector, edid); |
| ret = drm_add_edid_modes(connector, edid); |
| kfree(edid); |
| } |
| return ret; |
| } |
| |
| static uint32_t mga_vga_calculate_mode_bandwidth(struct drm_display_mode *mode, |
| int bits_per_pixel) |
| { |
| uint32_t total_area, divisor; |
| int64_t active_area, pixels_per_second, bandwidth; |
| uint64_t bytes_per_pixel = (bits_per_pixel + 7) / 8; |
| |
| divisor = 1024; |
| |
| if (!mode->htotal || !mode->vtotal || !mode->clock) |
| return 0; |
| |
| active_area = mode->hdisplay * mode->vdisplay; |
| total_area = mode->htotal * mode->vtotal; |
| |
| pixels_per_second = active_area * mode->clock * 1000; |
| do_div(pixels_per_second, total_area); |
| |
| bandwidth = pixels_per_second * bytes_per_pixel * 100; |
| do_div(bandwidth, divisor); |
| |
| return (uint32_t)(bandwidth); |
| } |
| |
| #define MODE_BANDWIDTH MODE_BAD |
| |
| static int mga_vga_mode_valid(struct drm_connector *connector, |
| struct drm_display_mode *mode) |
| { |
| struct drm_device *dev = connector->dev; |
| struct mga_device *mdev = (struct mga_device*)dev->dev_private; |
| int bpp = 32; |
| |
| if (IS_G200_SE(mdev)) { |
| if (mdev->unique_rev_id == 0x01) { |
| if (mode->hdisplay > 1600) |
| return MODE_VIRTUAL_X; |
| if (mode->vdisplay > 1200) |
| return MODE_VIRTUAL_Y; |
| if (mga_vga_calculate_mode_bandwidth(mode, bpp) |
| > (24400 * 1024)) |
| return MODE_BANDWIDTH; |
| } else if (mdev->unique_rev_id >= 0x02) { |
| if (mode->hdisplay > 1920) |
| return MODE_VIRTUAL_X; |
| if (mode->vdisplay > 1200) |
| return MODE_VIRTUAL_Y; |
| if (mga_vga_calculate_mode_bandwidth(mode, bpp) |
| > (30100 * 1024)) |
| return MODE_BANDWIDTH; |
| } |
| } else if (mdev->type == G200_WB) { |
| if (mode->hdisplay > 1280) |
| return MODE_VIRTUAL_X; |
| if (mode->vdisplay > 1024) |
| return MODE_VIRTUAL_Y; |
| if (mga_vga_calculate_mode_bandwidth(mode, |
| bpp > (31877 * 1024))) |
| return MODE_BANDWIDTH; |
| } else if (mdev->type == G200_EV && |
| (mga_vga_calculate_mode_bandwidth(mode, bpp) |
| > (32700 * 1024))) { |
| return MODE_BANDWIDTH; |
| } else if (mdev->type == G200_EH && |
| (mga_vga_calculate_mode_bandwidth(mode, bpp) |
| > (37500 * 1024))) { |
| return MODE_BANDWIDTH; |
| } else if (mdev->type == G200_ER && |
| (mga_vga_calculate_mode_bandwidth(mode, |
| bpp) > (55000 * 1024))) { |
| return MODE_BANDWIDTH; |
| } |
| |
| if ((mode->hdisplay % 8) != 0 || (mode->hsync_start % 8) != 0 || |
| (mode->hsync_end % 8) != 0 || (mode->htotal % 8) != 0) { |
| return MODE_H_ILLEGAL; |
| } |
| |
| if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 || |
| mode->crtc_hsync_end > 4096 || mode->crtc_htotal > 4096 || |
| mode->crtc_vdisplay > 2048 || mode->crtc_vsync_start > 4096 || |
| mode->crtc_vsync_end > 4096 || mode->crtc_vtotal > 4096) { |
| return MODE_BAD; |
| } |
| |
| /* Validate the mode input by the user */ |
| if (connector->cmdline_mode.specified) { |
| if (connector->cmdline_mode.bpp_specified) |
| bpp = connector->cmdline_mode.bpp; |
| } |
| |
| if ((mode->hdisplay * mode->vdisplay * (bpp/8)) > mdev->mc.vram_size) { |
| if (connector->cmdline_mode.specified) |
| connector->cmdline_mode.specified = false; |
| return MODE_BAD; |
| } |
| |
| return MODE_OK; |
| } |
| |
| static struct drm_encoder *mga_connector_best_encoder(struct drm_connector |
| *connector) |
| { |
| int enc_id = connector->encoder_ids[0]; |
| /* pick the encoder ids */ |
| if (enc_id) |
| return drm_encoder_find(connector->dev, enc_id); |
| return NULL; |
| } |
| |
| static enum drm_connector_status mga_vga_detect(struct drm_connector |
| *connector, bool force) |
| { |
| return connector_status_connected; |
| } |
| |
| static void mga_connector_destroy(struct drm_connector *connector) |
| { |
| struct mga_connector *mga_connector = to_mga_connector(connector); |
| mgag200_i2c_destroy(mga_connector->i2c); |
| drm_connector_cleanup(connector); |
| kfree(connector); |
| } |
| |
| struct drm_connector_helper_funcs mga_vga_connector_helper_funcs = { |
| .get_modes = mga_vga_get_modes, |
| .mode_valid = mga_vga_mode_valid, |
| .best_encoder = mga_connector_best_encoder, |
| }; |
| |
| struct drm_connector_funcs mga_vga_connector_funcs = { |
| .dpms = drm_helper_connector_dpms, |
| .detect = mga_vga_detect, |
| .fill_modes = drm_helper_probe_single_connector_modes, |
| .destroy = mga_connector_destroy, |
| }; |
| |
| static struct drm_connector *mga_vga_init(struct drm_device *dev) |
| { |
| struct drm_connector *connector; |
| struct mga_connector *mga_connector; |
| |
| mga_connector = kzalloc(sizeof(struct mga_connector), GFP_KERNEL); |
| if (!mga_connector) |
| return NULL; |
| |
| connector = &mga_connector->base; |
| |
| drm_connector_init(dev, connector, |
| &mga_vga_connector_funcs, DRM_MODE_CONNECTOR_VGA); |
| |
| drm_connector_helper_add(connector, &mga_vga_connector_helper_funcs); |
| |
| drm_connector_register(connector); |
| |
| mga_connector->i2c = mgag200_i2c_create(dev); |
| if (!mga_connector->i2c) |
| DRM_ERROR("failed to add ddc bus\n"); |
| |
| return connector; |
| } |
| |
| |
| int mgag200_modeset_init(struct mga_device *mdev) |
| { |
| struct drm_encoder *encoder; |
| struct drm_connector *connector; |
| int ret; |
| |
| mdev->mode_info.mode_config_initialized = true; |
| |
| mdev->dev->mode_config.max_width = MGAG200_MAX_FB_WIDTH; |
| mdev->dev->mode_config.max_height = MGAG200_MAX_FB_HEIGHT; |
| |
| mdev->dev->mode_config.fb_base = mdev->mc.vram_base; |
| |
| mga_crtc_init(mdev); |
| |
| encoder = mga_encoder_init(mdev->dev); |
| if (!encoder) { |
| DRM_ERROR("mga_encoder_init failed\n"); |
| return -1; |
| } |
| |
| connector = mga_vga_init(mdev->dev); |
| if (!connector) { |
| DRM_ERROR("mga_vga_init failed\n"); |
| return -1; |
| } |
| |
| drm_mode_connector_attach_encoder(connector, encoder); |
| |
| ret = mgag200_fbdev_init(mdev); |
| if (ret) { |
| DRM_ERROR("mga_fbdev_init failed\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| void mgag200_modeset_fini(struct mga_device *mdev) |
| { |
| |
| } |