diff options
Diffstat (limited to 'drivers/video/omap2/dss/dsi.c')
-rw-r--r-- | drivers/video/omap2/dss/dsi.c | 134 |
1 files changed, 70 insertions, 64 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 3ef94227bbe7..37ffbb6ecf69 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -189,8 +189,8 @@ struct dsi_reg { u16 idx; }; #define FINT_MIN 750000 #define REGN_MAX (1 << 7) #define REGM_MAX ((1 << 11) - 1) -#define REGM3_MAX (1 << 4) -#define REGM4_MAX (1 << 4) +#define REGM_DISPC_MAX (1 << 4) +#define REGM_DSI_MAX (1 << 4) #define LP_DIV_MAX ((1 << 13) - 1) enum fifo_size { @@ -642,7 +642,7 @@ static void dsi_vc_disable_bta_irq(int channel) dsi_write_reg(DSI_VC_IRQENABLE(channel), l); } -/* DSI func clock. this could also be DSI2_PLL_FCLK */ +/* DSI func clock. this could also be dsi_pll_hsdiv_dsi_clk */ static inline void enable_clocks(bool enable) { if (enable) @@ -712,14 +712,14 @@ static inline int dsi_if_enable(bool enable) return 0; } -unsigned long dsi_get_dsi1_pll_rate(void) +unsigned long dsi_get_pll_hsdiv_dispc_rate(void) { - return dsi.current_cinfo.dsi1_pll_fclk; + return dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk; } -static unsigned long dsi_get_dsi2_pll_rate(void) +static unsigned long dsi_get_pll_hsdiv_dsi_rate(void) { - return dsi.current_cinfo.dsi2_pll_fclk; + return dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk; } static unsigned long dsi_get_txbyteclkhs(void) @@ -732,11 +732,11 @@ static unsigned long dsi_fclk_rate(void) unsigned long r; if (dss_get_dsi_clk_source() == DSS_CLK_SRC_FCK) { - /* DSI FCLK source is DSS1_ALWON_FCK, which is dss1_fck */ + /* DSI FCLK source is DSS_CLK_FCK */ r = dss_clk_get_rate(DSS_CLK_FCK); } else { - /* DSI FCLK source is DSI2_PLL_FCLK */ - r = dsi_get_dsi2_pll_rate(); + /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */ + r = dsi_get_pll_hsdiv_dsi_rate(); } return r; @@ -806,16 +806,16 @@ static int dsi_calc_clock_rates(struct omap_dss_device *dssdev, if (cinfo->regm == 0 || cinfo->regm > REGM_MAX) return -EINVAL; - if (cinfo->regm3 > REGM3_MAX) + if (cinfo->regm_dispc > REGM_DISPC_MAX) return -EINVAL; - if (cinfo->regm4 > REGM4_MAX) + if (cinfo->regm_dsi > REGM_DSI_MAX) return -EINVAL; - if (cinfo->use_dss2_fck) { + if (cinfo->use_sys_clk) { cinfo->clkin = dss_clk_get_rate(DSS_CLK_SYSCK); /* XXX it is unclear if highfreq should be used - * with DSS2_FCK source also */ + * with DSS_SYS_CLK source also */ cinfo->highfreq = 0; } else { cinfo->clkin = dispc_pclk_rate(dssdev->manager->id); @@ -836,15 +836,17 @@ static int dsi_calc_clock_rates(struct omap_dss_device *dssdev, if (cinfo->clkin4ddr > 1800 * 1000 * 1000) return -EINVAL; - if (cinfo->regm3 > 0) - cinfo->dsi1_pll_fclk = cinfo->clkin4ddr / cinfo->regm3; + if (cinfo->regm_dispc > 0) + cinfo->dsi_pll_hsdiv_dispc_clk = + cinfo->clkin4ddr / cinfo->regm_dispc; else - cinfo->dsi1_pll_fclk = 0; + cinfo->dsi_pll_hsdiv_dispc_clk = 0; - if (cinfo->regm4 > 0) - cinfo->dsi2_pll_fclk = cinfo->clkin4ddr / cinfo->regm4; + if (cinfo->regm_dsi > 0) + cinfo->dsi_pll_hsdiv_dsi_clk = + cinfo->clkin4ddr / cinfo->regm_dsi; else - cinfo->dsi2_pll_fclk = 0; + cinfo->dsi_pll_hsdiv_dsi_clk = 0; return 0; } @@ -857,18 +859,18 @@ int dsi_pll_calc_clock_div_pck(bool is_tft, unsigned long req_pck, struct dispc_clock_info best_dispc; int min_fck_per_pck; int match = 0; - unsigned long dss_clk_fck2, max_dss_fck; + unsigned long dss_sys_clk, max_dss_fck; - dss_clk_fck2 = dss_clk_get_rate(DSS_CLK_SYSCK); + dss_sys_clk = dss_clk_get_rate(DSS_CLK_SYSCK); max_dss_fck = dss_feat_get_max_dss_fck(); if (req_pck == dsi.cache_req_pck && - dsi.cache_cinfo.clkin == dss_clk_fck2) { + dsi.cache_cinfo.clkin == dss_sys_clk) { DSSDBG("DSI clock info found from cache\n"); *dsi_cinfo = dsi.cache_cinfo; - dispc_find_clk_divs(is_tft, req_pck, dsi_cinfo->dsi1_pll_fclk, - dispc_cinfo); + dispc_find_clk_divs(is_tft, req_pck, + dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo); return 0; } @@ -889,8 +891,8 @@ retry: memset(&best_dispc, 0, sizeof(best_dispc)); memset(&cur, 0, sizeof(cur)); - cur.clkin = dss_clk_fck2; - cur.use_dss2_fck = 1; + cur.clkin = dss_sys_clk; + cur.use_sys_clk = 1; cur.highfreq = 0; /* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */ @@ -916,30 +918,32 @@ retry: if (cur.clkin4ddr > 1800 * 1000 * 1000) break; - /* DSI1_PLL_FCLK(MHz) = DSIPHY(MHz) / regm3 < 173MHz */ - for (cur.regm3 = 1; cur.regm3 < REGM3_MAX; - ++cur.regm3) { + /* dsi_pll_hsdiv_dispc_clk(MHz) = + * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */ + for (cur.regm_dispc = 1; cur.regm_dispc < REGM_DISPC_MAX; + ++cur.regm_dispc) { struct dispc_clock_info cur_dispc; - cur.dsi1_pll_fclk = cur.clkin4ddr / cur.regm3; + cur.dsi_pll_hsdiv_dispc_clk = + cur.clkin4ddr / cur.regm_dispc; /* this will narrow down the search a bit, * but still give pixclocks below what was * requested */ - if (cur.dsi1_pll_fclk < req_pck) + if (cur.dsi_pll_hsdiv_dispc_clk < req_pck) break; - if (cur.dsi1_pll_fclk > max_dss_fck) + if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck) continue; if (min_fck_per_pck && - cur.dsi1_pll_fclk < + cur.dsi_pll_hsdiv_dispc_clk < req_pck * min_fck_per_pck) continue; match = 1; dispc_find_clk_divs(is_tft, req_pck, - cur.dsi1_pll_fclk, + cur.dsi_pll_hsdiv_dispc_clk, &cur_dispc); if (abs(cur_dispc.pck - req_pck) < @@ -968,9 +972,9 @@ found: return -EINVAL; } - /* DSI2_PLL_FCLK (regm4) is not used */ - best.regm4 = 0; - best.dsi2_pll_fclk = 0; + /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */ + best.regm_dsi = 0; + best.dsi_pll_hsdiv_dsi_clk = 0; if (dsi_cinfo) *dsi_cinfo = best; @@ -994,18 +998,20 @@ int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo) dsi.current_cinfo.fint = cinfo->fint; dsi.current_cinfo.clkin4ddr = cinfo->clkin4ddr; - dsi.current_cinfo.dsi1_pll_fclk = cinfo->dsi1_pll_fclk; - dsi.current_cinfo.dsi2_pll_fclk = cinfo->dsi2_pll_fclk; + dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk = + cinfo->dsi_pll_hsdiv_dispc_clk; + dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk = + cinfo->dsi_pll_hsdiv_dsi_clk; dsi.current_cinfo.regn = cinfo->regn; dsi.current_cinfo.regm = cinfo->regm; - dsi.current_cinfo.regm3 = cinfo->regm3; - dsi.current_cinfo.regm4 = cinfo->regm4; + dsi.current_cinfo.regm_dispc = cinfo->regm_dispc; + dsi.current_cinfo.regm_dsi = cinfo->regm_dsi; DSSDBG("DSI Fint %ld\n", cinfo->fint); DSSDBG("clkin (%s) rate %ld, highfreq %d\n", - cinfo->use_dss2_fck ? "dss2_fck" : "pclkfree", + cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree", cinfo->clkin, cinfo->highfreq); @@ -1022,14 +1028,14 @@ int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo) DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4); - DSSDBG("regm3 = %d, %s (%s) = %lu\n", cinfo->regm3, + DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc, dss_get_generic_clk_source_name(DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC), dss_feat_get_clk_source_name(DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC), - cinfo->dsi1_pll_fclk); - DSSDBG("regm4 = %d, %s (%s) = %lu\n", cinfo->regm4, + cinfo->dsi_pll_hsdiv_dispc_clk); + DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi, dss_get_generic_clk_source_name(DSS_CLK_SRC_DSI_PLL_HSDIV_DSI), dss_feat_get_clk_source_name(DSS_CLK_SRC_DSI_PLL_HSDIV_DSI), - cinfo->dsi2_pll_fclk); + cinfo->dsi_pll_hsdiv_dsi_clk); REG_FLD_MOD(DSI_PLL_CONTROL, 0, 0, 0); /* DSI_PLL_AUTOMODE = manual */ @@ -1037,9 +1043,9 @@ int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo) l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */ l = FLD_MOD(l, cinfo->regn - 1, 7, 1); /* DSI_PLL_REGN */ l = FLD_MOD(l, cinfo->regm, 18, 8); /* DSI_PLL_REGM */ - l = FLD_MOD(l, cinfo->regm3 > 0 ? cinfo->regm3 - 1 : 0, + l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0, 22, 19); /* DSI_CLOCK_DIV */ - l = FLD_MOD(l, cinfo->regm4 > 0 ? cinfo->regm4 - 1 : 0, + l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0, 26, 23); /* DSIPROTO_CLOCK_DIV */ dsi_write_reg(DSI_PLL_CONFIGURATION1, l); @@ -1057,7 +1063,7 @@ int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo) l = dsi_read_reg(DSI_PLL_CONFIGURATION2); l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */ - l = FLD_MOD(l, cinfo->use_dss2_fck ? 0 : 1, + l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1, 11, 11); /* DSI_PLL_CLKSEL */ l = FLD_MOD(l, cinfo->highfreq, 12, 12); /* DSI_PLL_HIGHFREQ */ @@ -1186,26 +1192,26 @@ void dsi_dump_clocks(struct seq_file *s) seq_printf(s, "dsi pll source = %s\n", clksel == 0 ? - "dss2_alwon_fclk" : "pclkfree"); + "dss_sys_clk" : "pclkfree"); seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn); seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n", cinfo->clkin4ddr, cinfo->regm); - seq_printf(s, "%s (%s)\t%-16luregm3 %u\t(%s)\n", + seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n", dss_get_generic_clk_source_name(dispc_clk_src), dss_feat_get_clk_source_name(dispc_clk_src), - cinfo->dsi1_pll_fclk, - cinfo->regm3, + cinfo->dsi_pll_hsdiv_dispc_clk, + cinfo->regm_dispc, dispc_clk_src == DSS_CLK_SRC_FCK ? "off" : "on"); - seq_printf(s, "%s (%s)\t%-16luregm4 %u\t(%s)\n", + seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n", dss_get_generic_clk_source_name(dsi_clk_src), dss_feat_get_clk_source_name(dsi_clk_src), - cinfo->dsi2_pll_fclk, - cinfo->regm4, + cinfo->dsi_pll_hsdiv_dsi_clk, + cinfo->regm_dsi, dsi_clk_src == DSS_CLK_SRC_FCK ? "off" : "on"); @@ -2989,12 +2995,12 @@ static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) struct dsi_clock_info cinfo; int r; - /* we always use DSS2_FCK as input clock */ - cinfo.use_dss2_fck = true; + /* we always use DSS_CLK_SYSCK as input clock */ + cinfo.use_sys_clk = true; cinfo.regn = dssdev->phy.dsi.div.regn; cinfo.regm = dssdev->phy.dsi.div.regm; - cinfo.regm3 = dssdev->phy.dsi.div.regm3; - cinfo.regm4 = dssdev->phy.dsi.div.regm4; + cinfo.regm_dispc = dssdev->phy.dsi.div.regm_dispc; + cinfo.regm_dsi = dssdev->phy.dsi.div.regm_dsi; r = dsi_calc_clock_rates(dssdev, &cinfo); if (r) { DSSERR("Failed to calc dsi clocks\n"); @@ -3016,7 +3022,7 @@ static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev) int r; unsigned long long fck; - fck = dsi_get_dsi1_pll_rate(); + fck = dsi_get_pll_hsdiv_dispc_rate(); dispc_cinfo.lck_div = dssdev->phy.dsi.div.lck_div; dispc_cinfo.pck_div = dssdev->phy.dsi.div.pck_div; @@ -3244,7 +3250,7 @@ int dsi_init_display(struct omap_dss_device *dssdev) return 0; } -void dsi_wait_dsi1_pll_active(void) +void dsi_wait_pll_hsdiv_dispc_active(void) { if (wait_for_bit_change(DSI_PLL_STATUS, 7, 1) != 1) DSSERR("%s (%s) not active\n", @@ -3252,7 +3258,7 @@ void dsi_wait_dsi1_pll_active(void) dss_feat_get_clk_source_name(DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC)); } -void dsi_wait_dsi2_pll_active(void) +void dsi_wait_pll_hsdiv_dsi_active(void) { if (wait_for_bit_change(DSI_PLL_STATUS, 8, 1) != 1) DSSERR("%s (%s) not active\n", |