--- /dev/null
+/*
+ * 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, permitteddelta;
+ 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;
+ permitteddelta = clock * 5 / 1000;
+
+ 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, permitteddelta;
+ 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;
+ permitteddelta = clock * 5 / 1000;
+
+ 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, permitteddelta;
+ 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;
+ permitteddelta = clock * 5 / 1000;
+
+ 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)
+{
+
+}
Code Review / kvmfornfv.git / blobdiff