From d0f58bd3bba3877fb1af4664c4e33273d36f00e4 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 31 Oct 2013 14:44:23 +0200 Subject: [PATCH] OMAPDSS: remove struct dss_clock_info Remove struct dss_clock_info, as it is not usable in a case where DSS fclk comes from a dedicated PLL. Instead, just use the fclk rate in place of dss_clock_info, as that is all that's needed. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dpi.c | 13 ++++---- drivers/video/omap2/dss/dss.c | 59 ++++++++--------------------------- drivers/video/omap2/dss/dss.h | 13 ++------ drivers/video/omap2/dss/sdi.c | 19 ++++++----- 4 files changed, 30 insertions(+), 74 deletions(-) diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c index bd48cde53561..16acdddc94e3 100644 --- a/drivers/video/omap2/dss/dpi.c +++ b/drivers/video/omap2/dss/dpi.c @@ -117,7 +117,7 @@ struct dpi_clk_calc_ctx { /* outputs */ struct dsi_clock_info dsi_cinfo; - struct dss_clock_info dss_cinfo; + unsigned long long fck; struct dispc_clock_info dispc_cinfo; }; @@ -184,12 +184,11 @@ static bool dpi_calc_pll_cb(int regn, int regm, unsigned long fint, dpi_calc_hsdiv_cb, ctx); } -static bool dpi_calc_dss_cb(int fckd, unsigned long fck, void *data) +static bool dpi_calc_dss_cb(unsigned long fck, void *data) { struct dpi_clk_calc_ctx *ctx = data; - ctx->dss_cinfo.fck = fck; - ctx->dss_cinfo.fck_div = fckd; + ctx->fck = fck; return dispc_div_calc(fck, ctx->pck_min, ctx->pck_max, dpi_calc_dispc_cb, ctx); @@ -286,13 +285,13 @@ static int dpi_set_dispc_clk(unsigned long pck_req, unsigned long *fck, if (!ok) return -EINVAL; - r = dss_set_clock_div(&ctx.dss_cinfo); + r = dss_set_fck_rate(ctx.fck); if (r) return r; dpi.mgr_config.clock_info = ctx.dispc_cinfo; - *fck = ctx.dss_cinfo.fck; + *fck = ctx.fck; *lck_div = ctx.dispc_cinfo.lck_div; *pck_div = ctx.dispc_cinfo.pck_div; @@ -495,7 +494,7 @@ static int dpi_check_timings(struct omap_dss_device *dssdev, if (!ok) return -EINVAL; - fck = ctx.dss_cinfo.fck; + fck = ctx.fck; } lck_div = ctx.dispc_cinfo.lck_div; diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c index e59577a2c41c..c37d934e1a57 100644 --- a/drivers/video/omap2/dss/dss.c +++ b/drivers/video/omap2/dss/dss.c @@ -81,7 +81,6 @@ static struct { unsigned long cache_req_pck; unsigned long cache_prate; - struct dss_clock_info cache_dss_cinfo; struct dispc_clock_info cache_dispc_cinfo; enum omap_dss_clk_source dsi_clk_source[MAX_NUM_DSI]; @@ -451,29 +450,6 @@ enum omap_dss_clk_source dss_get_lcd_clk_source(enum omap_channel channel) } } -/* calculate clock rates using dividers in cinfo */ -int dss_calc_clock_rates(struct dss_clock_info *cinfo) -{ - if (dss.dpll4_m4_ck) { - unsigned long prate; - - if (cinfo->fck_div > dss.feat->fck_div_max || - cinfo->fck_div == 0) - return -EINVAL; - - prate = clk_get_rate(clk_get_parent(dss.dpll4_m4_ck)); - - cinfo->fck = prate / cinfo->fck_div * - dss.feat->dss_fck_multiplier; - } else { - if (cinfo->fck_div != 0) - return -EINVAL; - cinfo->fck = clk_get_rate(dss.dss_clk); - } - - return 0; -} - bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data) { int fckd, fckd_start, fckd_stop; @@ -485,8 +461,7 @@ bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data) if (dss.dpll4_m4_ck == NULL) { fck = clk_get_rate(dss.dss_clk); - fckd = 1; - return func(fckd, fck, data); + return func(fck, data); } fck_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); @@ -503,38 +478,35 @@ bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data) for (fckd = fckd_start; fckd >= fckd_stop; --fckd) { fck = prate / fckd * m; - if (func(fckd, fck, data)) + if (func(fck, data)) return true; } return false; } -int dss_set_clock_div(struct dss_clock_info *cinfo) +int dss_set_fck_rate(unsigned long rate) { + DSSDBG("set fck to %lu\n", rate); + if (dss.dpll4_m4_ck) { unsigned long prate; + unsigned m; int r; prate = clk_get_rate(clk_get_parent(dss.dpll4_m4_ck)); - DSSDBG("dpll4_m4 = %ld\n", prate); + m = dss.feat->dss_fck_multiplier; - r = clk_set_rate(dss.dpll4_m4_ck, - DIV_ROUND_UP(prate, cinfo->fck_div)); + r = clk_set_rate(dss.dpll4_m4_ck, rate * m); if (r) return r; - } else { - if (cinfo->fck_div != 0) - return -EINVAL; } dss.dss_clk_rate = clk_get_rate(dss.dss_clk); - WARN_ONCE(dss.dss_clk_rate != cinfo->fck, + WARN_ONCE(dss.dss_clk_rate != rate, "clk rate mismatch: %lu != %lu", dss.dss_clk_rate, - cinfo->fck); - - DSSDBG("fck = %ld (%d)\n", cinfo->fck, cinfo->fck_div); + rate); return 0; } @@ -555,8 +527,8 @@ unsigned long dss_get_dispc_clk_rate(void) static int dss_setup_default_clock(void) { unsigned long max_dss_fck, prate; + unsigned long fck; unsigned fck_div; - struct dss_clock_info dss_cinfo = { 0 }; int r; if (dss.dpll4_m4_ck == NULL) @@ -568,14 +540,9 @@ static int dss_setup_default_clock(void) fck_div = DIV_ROUND_UP(prate * dss.feat->dss_fck_multiplier, max_dss_fck); + fck = prate / fck_div * dss.feat->dss_fck_multiplier; - dss_cinfo.fck_div = fck_div; - - r = dss_calc_clock_rates(&dss_cinfo); - if (r) - return r; - - r = dss_set_clock_div(&dss_cinfo); + r = dss_set_fck_rate(fck); if (r) return r; diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index e172531d196b..ead1960ad9d8 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -100,14 +100,6 @@ enum dss_writeback_channel { DSS_WB_LCD3_MGR = 7, }; -struct dss_clock_info { - /* rates that we get with dividers below */ - unsigned long fck; - - /* dividers */ - u16 fck_div; -}; - struct dispc_clock_info { /* rates that we get with dividers below */ unsigned long lck; @@ -251,10 +243,9 @@ void dss_set_venc_output(enum omap_dss_venc_type type); void dss_set_dac_pwrdn_bgz(bool enable); unsigned long dss_get_dpll4_rate(void); -int dss_calc_clock_rates(struct dss_clock_info *cinfo); -int dss_set_clock_div(struct dss_clock_info *cinfo); +int dss_set_fck_rate(unsigned long rate); -typedef bool (*dss_div_calc_func)(int fckd, unsigned long fck, void *data); +typedef bool (*dss_div_calc_func)(unsigned long fck, void *data); bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data); /* SDI */ diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c index ccc569ae7cca..221fd34c42ff 100644 --- a/drivers/video/omap2/dss/sdi.c +++ b/drivers/video/omap2/dss/sdi.c @@ -46,7 +46,7 @@ static struct { struct sdi_clk_calc_ctx { unsigned long pck_min, pck_max; - struct dss_clock_info dss_cinfo; + unsigned long long fck; struct dispc_clock_info dispc_cinfo; }; @@ -63,19 +63,18 @@ static bool dpi_calc_dispc_cb(int lckd, int pckd, unsigned long lck, return true; } -static bool dpi_calc_dss_cb(int fckd, unsigned long fck, void *data) +static bool dpi_calc_dss_cb(unsigned long fck, void *data) { struct sdi_clk_calc_ctx *ctx = data; - ctx->dss_cinfo.fck = fck; - ctx->dss_cinfo.fck_div = fckd; + ctx->fck = fck; return dispc_div_calc(fck, ctx->pck_min, ctx->pck_max, dpi_calc_dispc_cb, ctx); } static int sdi_calc_clock_div(unsigned long pclk, - struct dss_clock_info *dss_cinfo, + unsigned long *fck, struct dispc_clock_info *dispc_cinfo) { int i; @@ -100,7 +99,7 @@ static int sdi_calc_clock_div(unsigned long pclk, ok = dss_div_calc(ctx.pck_min, dpi_calc_dss_cb, &ctx); if (ok) { - *dss_cinfo = ctx.dss_cinfo; + *fck = ctx.fck; *dispc_cinfo = ctx.dispc_cinfo; return 0; } @@ -128,7 +127,7 @@ static int sdi_display_enable(struct omap_dss_device *dssdev) { struct omap_dss_device *out = &sdi.output; struct omap_video_timings *t = &sdi.timings; - struct dss_clock_info dss_cinfo; + unsigned long fck; struct dispc_clock_info dispc_cinfo; unsigned long pck; int r; @@ -150,13 +149,13 @@ static int sdi_display_enable(struct omap_dss_device *dssdev) t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; - r = sdi_calc_clock_div(t->pixel_clock * 1000, &dss_cinfo, &dispc_cinfo); + r = sdi_calc_clock_div(t->pixel_clock * 1000, &fck, &dispc_cinfo); if (r) goto err_calc_clock_div; sdi.mgr_config.clock_info = dispc_cinfo; - pck = dss_cinfo.fck / dispc_cinfo.lck_div / dispc_cinfo.pck_div / 1000; + pck = fck / dispc_cinfo.lck_div / dispc_cinfo.pck_div / 1000; if (pck != t->pixel_clock) { DSSWARN("Could not find exact pixel clock. Requested %d kHz, " @@ -169,7 +168,7 @@ static int sdi_display_enable(struct omap_dss_device *dssdev) dss_mgr_set_timings(out->manager, t); - r = dss_set_clock_div(&dss_cinfo); + r = dss_set_fck_rate(fck); if (r) goto err_set_dss_clock_div; -- 2.34.1