Add chip specific callbacks for the generic and non-generic clock calculation code. Also remove as much dupilicated code as possible.

Signed-off-by: Patrik Jakobsson patrik.r.jakobsson@gmail.com --- drivers/gpu/drm/gma500/psb_device.c | 3 +- drivers/gpu/drm/gma500/psb_device.h | 24 ++++ drivers/gpu/drm/gma500/psb_intel_display.c | 189 ++++------------------------- drivers/gpu/drm/gma500/psb_intel_display.h | 2 - 4 files changed, 51 insertions(+), 167 deletions(-) create mode 100644 drivers/gpu/drm/gma500/psb_device.h

diff --git a/drivers/gpu/drm/gma500/psb_device.c b/drivers/gpu/drm/gma500/psb_device.c index f6f534b..6976786 100644 --- a/drivers/gpu/drm/gma500/psb_device.c +++ b/drivers/gpu/drm/gma500/psb_device.c @@ -25,7 +25,7 @@ #include "psb_reg.h" #include "psb_intel_reg.h" #include "intel_bios.h" - +#include "psb_device.h"

static int psb_output_init(struct drm_device *dev) { @@ -380,6 +380,7 @@ const struct psb_ops psb_chip_ops = {

.crtc_helper = &psb_intel_helper_funcs, .crtc_funcs = &psb_intel_crtc_funcs, + .clock_funcs = &psb_clock_funcs,

.output_init = psb_output_init,

diff --git a/drivers/gpu/drm/gma500/psb_device.h b/drivers/gpu/drm/gma500/psb_device.h new file mode 100644 index 0000000..35e304c --- /dev/null +++ b/drivers/gpu/drm/gma500/psb_device.h @@ -0,0 +1,24 @@ +/* + * Copyright © 2013 Patrik Jakobsson + * Copyright © 2011 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. + */ + +#ifndef _PSB_DEVICE_H_ +#define _PSB_DEVICE_H_ + +extern const struct gma_clock_funcs psb_clock_funcs; + +#endif diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c index 0f1d069..89be7a3 100644 --- a/drivers/gpu/drm/gma500/psb_intel_display.c +++ b/drivers/gpu/drm/gma500/psb_intel_display.c @@ -26,39 +26,13 @@ #include "psb_drv.h" #include "psb_intel_drv.h" #include "psb_intel_reg.h" -#include "psb_intel_display.h" +#include "gma_display.h" #include "power.h"

-struct psb_intel_clock_t { - /* given values */ - int n; - int m1, m2; - int p1, p2; - /* derived values */ - int dot; - int vco; - int m; - int p; -}; - -struct psb_intel_range_t { - int min, max; -}; - -struct psb_intel_p2_t { - int dot_limit; - int p2_slow, p2_fast; -}; - -struct psb_intel_limit_t { - struct psb_intel_range_t dot, vco, n, m, m1, m2, p, p1; - struct psb_intel_p2_t p2; -}; - #define INTEL_LIMIT_I9XX_SDVO_DAC 0 #define INTEL_LIMIT_I9XX_LVDS 1

-static const struct psb_intel_limit_t psb_intel_limits[] = { +static const struct gma_limit_t psb_intel_limits[] = { { /* INTEL_LIMIT_I9XX_SDVO_DAC */ .dot = {.min = 20000, .max = 400000}, .vco = {.min = 1400000, .max = 2800000}, @@ -68,8 +42,8 @@ static const struct psb_intel_limit_t psb_intel_limits[] = { .m2 = {.min = 3, .max = 7}, .p = {.min = 5, .max = 80}, .p1 = {.min = 1, .max = 8}, - .p2 = {.dot_limit = 200000, - .p2_slow = 10, .p2_fast = 5}, + .p2 = {.dot_limit = 200000, .p2_slow = 10, .p2_fast = 5}, + .find_pll = gma_find_best_pll, }, { /* INTEL_LIMIT_I9XX_LVDS */ .dot = {.min = 20000, .max = 400000}, @@ -83,23 +57,24 @@ static const struct psb_intel_limit_t psb_intel_limits[] = { /* The single-channel range is 25-112Mhz, and dual-channel * is 80-224Mhz. Prefer single channel as much as possible. */ - .p2 = {.dot_limit = 112000, - .p2_slow = 14, .p2_fast = 7}, + .p2 = {.dot_limit = 112000, .p2_slow = 14, .p2_fast = 7}, + .find_pll = gma_find_best_pll, }, };

-static const struct psb_intel_limit_t *psb_intel_limit(struct drm_crtc *crtc) +static const struct gma_limit_t *psb_intel_limit(struct drm_crtc *crtc, + int refclk) { - const struct psb_intel_limit_t *limit; + const struct gma_limit_t *limit;

- if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) + if (gma_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) limit = &psb_intel_limits[INTEL_LIMIT_I9XX_LVDS]; else limit = &psb_intel_limits[INTEL_LIMIT_I9XX_SDVO_DAC]; return limit; }

-static void psb_intel_clock(int refclk, struct psb_intel_clock_t *clock) +static void psb_intel_clock(int refclk, struct gma_clock_t *clock) { clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2); clock->p = clock->p1 * clock->p2; @@ -107,130 +82,6 @@ static void psb_intel_clock(int refclk, struct psb_intel_clock_t *clock) clock->dot = clock->vco / clock->p; }

-/** - * Returns whether any output on the specified pipe is of the specified type - */ -bool psb_intel_pipe_has_type(struct drm_crtc *crtc, int type) -{ - struct drm_device *dev = crtc->dev; - struct drm_mode_config *mode_config = &dev->mode_config; - struct drm_connector *l_entry; - - list_for_each_entry(l_entry, &mode_config->connector_list, head) { - if (l_entry->encoder && l_entry->encoder->crtc == crtc) { - struct psb_intel_encoder *psb_intel_encoder = - psb_intel_attached_encoder(l_entry); - if (psb_intel_encoder->type == type) - return true; - } - } - return false; -} - -#define INTELPllInvalid(s) { /* ErrorF (s) */; return false; } -/** - * Returns whether the given set of divisors are valid for a given refclk with - * the given connectors. - */ - -static bool psb_intel_PLL_is_valid(struct drm_crtc *crtc, - struct psb_intel_clock_t *clock) -{ - const struct psb_intel_limit_t *limit = psb_intel_limit(crtc); - - if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1) - INTELPllInvalid("p1 out of range\n"); - if (clock->p < limit->p.min || limit->p.max < clock->p) - INTELPllInvalid("p out of range\n"); - if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2) - INTELPllInvalid("m2 out of range\n"); - if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1) - INTELPllInvalid("m1 out of range\n"); - if (clock->m1 <= clock->m2) - INTELPllInvalid("m1 <= m2\n"); - if (clock->m < limit->m.min || limit->m.max < clock->m) - INTELPllInvalid("m out of range\n"); - if (clock->n < limit->n.min || limit->n.max < clock->n) - INTELPllInvalid("n out of range\n"); - if (clock->vco < limit->vco.min || limit->vco.max < clock->vco) - INTELPllInvalid("vco out of range\n"); - /* XXX: We may need to be checking "Dot clock" - * depending on the multiplier, connector, etc., - * rather than just a single range. - */ - if (clock->dot < limit->dot.min || limit->dot.max < clock->dot) - INTELPllInvalid("dot out of range\n"); - - return true; -} - -/** - * Returns a set of divisors for the desired target clock with the given - * refclk, or FALSE. The returned values represent the clock equation: - * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. - */ -static bool psb_intel_find_best_PLL(struct drm_crtc *crtc, int target, - int refclk, - struct psb_intel_clock_t *best_clock) -{ - struct drm_device *dev = crtc->dev; - struct psb_intel_clock_t clock; - const struct psb_intel_limit_t *limit = psb_intel_limit(crtc); - int err = target; - - if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) && - (REG_READ(LVDS) & LVDS_PORT_EN) != 0) { - /* - * For LVDS, if the panel is on, just rely on its current - * settings for dual-channel. We haven't figured out how to - * reliably set up different single/dual channel state, if we - * even can. - */ - if ((REG_READ(LVDS) & LVDS_CLKB_POWER_MASK) == - LVDS_CLKB_POWER_UP) - clock.p2 = limit->p2.p2_fast; - else - clock.p2 = limit->p2.p2_slow; - } else { - if (target < limit->p2.dot_limit) - clock.p2 = limit->p2.p2_slow; - else - clock.p2 = limit->p2.p2_fast; - } - - memset(best_clock, 0, sizeof(*best_clock)); - - for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; - clock.m1++) { - for (clock.m2 = limit->m2.min; - clock.m2 < clock.m1 && clock.m2 <= limit->m2.max; - clock.m2++) { - for (clock.n = limit->n.min; - clock.n <= limit->n.max; clock.n++) { - for (clock.p1 = limit->p1.min; - clock.p1 <= limit->p1.max; - clock.p1++) { - int this_err; - - psb_intel_clock(refclk, &clock); - - if (!psb_intel_PLL_is_valid - (crtc, &clock)) - continue; - - this_err = abs(clock.dot - target); - if (this_err < err) { - *best_clock = clock; - err = this_err; - } - } - } - } - } - - return err != target; -} - void psb_intel_wait_for_vblank(struct drm_device *dev) { /* Wait for 20ms, i.e. one cycle at 50hz. */ @@ -484,12 +335,13 @@ static int psb_intel_crtc_mode_set(struct drm_crtc *crtc, int pipe = psb_intel_crtc->pipe; const struct psb_offset *map = &dev_priv->regmap[pipe]; int refclk; - struct psb_intel_clock_t clock; + struct gma_clock_t clock; u32 dpll = 0, fp = 0, dspcntr, pipeconf; bool ok, is_sdvo = false; bool is_lvds = false, is_tv = false; struct drm_mode_config *mode_config = &dev->mode_config; struct drm_connector *connector; + const struct gma_limit_t *limit;

/* No scan out no play */ if (crtc->fb == NULL) { @@ -520,10 +372,13 @@ static int psb_intel_crtc_mode_set(struct drm_crtc *crtc,

refclk = 96000;

- ok = psb_intel_find_best_PLL(crtc, adjusted_mode->clock, refclk, + limit = psb_intel_crtc->clock_funcs->limit(crtc, refclk); + + ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock); if (!ok) { - dev_err(dev->dev, "Couldn't find PLL settings for mode!\n"); + DRM_ERROR("Couldn't find PLL settings for mode! target: %d, actual: %d", + adjusted_mode->clock, clock.dot); return 0; }

@@ -1022,7 +877,7 @@ static int psb_intel_crtc_clock_get(struct drm_device *dev, const struct psb_offset *map = &dev_priv->regmap[pipe]; u32 dpll; u32 fp; - struct psb_intel_clock_t clock; + struct gma_clock_t clock; bool is_lvds; struct psb_pipe *p = &dev_priv->regs.pipe[pipe];

@@ -1190,6 +1045,12 @@ const struct drm_crtc_funcs psb_intel_crtc_funcs = { .destroy = psb_intel_crtc_destroy, };

+const struct gma_clock_funcs psb_clock_funcs = { + .clock = psb_intel_clock, + .limit = psb_intel_limit, + .pll_is_valid = gma_pll_is_valid, +}; + /* * Set the default value of cursor control and base register * to zero. This is a workaround for h/w defect on Oaktrail diff --git a/drivers/gpu/drm/gma500/psb_intel_display.h b/drivers/gpu/drm/gma500/psb_intel_display.h index 3724b97..6e9007d 100644 --- a/drivers/gpu/drm/gma500/psb_intel_display.h +++ b/drivers/gpu/drm/gma500/psb_intel_display.h @@ -20,6 +20,4 @@ #ifndef _INTEL_DISPLAY_H_ #define _INTEL_DISPLAY_H_

-bool psb_intel_pipe_has_type(struct drm_crtc *crtc, int type); - #endif