Lines Matching refs:cvt
73 static u32 fb_cvt_hperiod(struct fb_cvt_data *cvt) in fb_cvt_hperiod() argument
75 u32 num = 1000000000/cvt->f_refresh; in fb_cvt_hperiod()
78 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { in fb_cvt_hperiod()
80 den = 2 * (cvt->yres/cvt->interlace + 2 * cvt->v_margin); in fb_cvt_hperiod()
83 den = 2 * (cvt->yres/cvt->interlace + cvt->v_margin * 2 in fb_cvt_hperiod()
84 + FB_CVT_MIN_VPORCH + cvt->interlace/2); in fb_cvt_hperiod()
91 static u32 fb_cvt_ideal_duty_cycle(struct fb_cvt_data *cvt) in fb_cvt_ideal_duty_cycle() argument
96 u32 h_period_est = cvt->hperiod; in fb_cvt_ideal_duty_cycle()
101 static u32 fb_cvt_hblank(struct fb_cvt_data *cvt) in fb_cvt_hblank() argument
105 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) in fb_cvt_hblank()
108 u32 ideal_duty_cycle = fb_cvt_ideal_duty_cycle(cvt); in fb_cvt_hblank()
109 u32 active_pixels = cvt->active_pixels; in fb_cvt_hblank()
125 static u32 fb_cvt_hsync(struct fb_cvt_data *cvt) in fb_cvt_hsync() argument
129 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) in fb_cvt_hsync()
132 hsync = (FB_CVT_CELLSIZE * cvt->htotal)/100; in fb_cvt_hsync()
138 static u32 fb_cvt_vbi_lines(struct fb_cvt_data *cvt) in fb_cvt_vbi_lines() argument
142 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { in fb_cvt_vbi_lines()
143 vbi_lines = (1000 * FB_CVT_RB_MIN_VBLANK)/cvt->hperiod + 1; in fb_cvt_vbi_lines()
144 min_vbi_lines = FB_CVT_RB_V_FPORCH + cvt->vsync + in fb_cvt_vbi_lines()
148 vbi_lines = (FB_CVT_MIN_VSYNC_BP * 1000)/cvt->hperiod + 1 + in fb_cvt_vbi_lines()
150 min_vbi_lines = cvt->vsync + FB_CVT_MIN_BPORCH + in fb_cvt_vbi_lines()
162 static u32 fb_cvt_vtotal(struct fb_cvt_data *cvt) in fb_cvt_vtotal() argument
164 u32 vtotal = cvt->yres/cvt->interlace; in fb_cvt_vtotal()
166 vtotal += 2 * cvt->v_margin + cvt->interlace/2 + fb_cvt_vbi_lines(cvt); in fb_cvt_vtotal()
167 vtotal |= cvt->interlace/2; in fb_cvt_vtotal()
172 static u32 fb_cvt_pixclock(struct fb_cvt_data *cvt) in fb_cvt_pixclock() argument
176 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) in fb_cvt_pixclock()
177 pixclock = (cvt->f_refresh * cvt->vtotal * cvt->htotal)/1000; in fb_cvt_pixclock()
179 pixclock = (cvt->htotal * 1000000)/cvt->hperiod; in fb_cvt_pixclock()
188 static u32 fb_cvt_aspect_ratio(struct fb_cvt_data *cvt) in fb_cvt_aspect_ratio() argument
190 u32 xres = cvt->xres; in fb_cvt_aspect_ratio()
191 u32 yres = cvt->yres; in fb_cvt_aspect_ratio()
208 cvt->status = 1; in fb_cvt_aspect_ratio()
214 static void fb_cvt_print_name(struct fb_cvt_data *cvt) in fb_cvt_print_name() argument
223 pixcount = (cvt->xres * (cvt->yres/cvt->interlace))/1000000; in fb_cvt_print_name()
224 pixcount_mod = (cvt->xres * (cvt->yres/cvt->interlace)) % 1000000; in fb_cvt_print_name()
228 cvt->xres, cvt->yres, cvt->refresh); in fb_cvt_print_name()
232 if (cvt->status) in fb_cvt_print_name()
246 if (cvt->aspect_ratio == 0) in fb_cvt_print_name()
248 else if (cvt->aspect_ratio == 3) in fb_cvt_print_name()
250 else if (cvt->aspect_ratio == 1 || cvt->aspect_ratio == 4) in fb_cvt_print_name()
252 else if (cvt->aspect_ratio == 2) in fb_cvt_print_name()
259 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { in fb_cvt_print_name()
270 static void fb_cvt_convert_to_mode(struct fb_cvt_data *cvt, in fb_cvt_convert_to_mode() argument
273 mode->refresh = cvt->f_refresh; in fb_cvt_convert_to_mode()
274 mode->pixclock = KHZ2PICOS(cvt->pixclock/1000); in fb_cvt_convert_to_mode()
275 mode->left_margin = cvt->h_back_porch; in fb_cvt_convert_to_mode()
276 mode->right_margin = cvt->h_front_porch; in fb_cvt_convert_to_mode()
277 mode->hsync_len = cvt->hsync; in fb_cvt_convert_to_mode()
278 mode->upper_margin = cvt->v_back_porch; in fb_cvt_convert_to_mode()
279 mode->lower_margin = cvt->v_front_porch; in fb_cvt_convert_to_mode()
280 mode->vsync_len = cvt->vsync; in fb_cvt_convert_to_mode()
284 if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) in fb_cvt_convert_to_mode()
307 struct fb_cvt_data cvt; in fb_find_mode_cvt() local
309 memset(&cvt, 0, sizeof(cvt)); in fb_find_mode_cvt()
312 cvt.flags |= FB_CVT_FLAG_MARGINS; in fb_find_mode_cvt()
315 cvt.flags |= FB_CVT_FLAG_REDUCED_BLANK; in fb_find_mode_cvt()
318 cvt.flags |= FB_CVT_FLAG_INTERLACED; in fb_find_mode_cvt()
320 cvt.xres = mode->xres; in fb_find_mode_cvt()
321 cvt.yres = mode->yres; in fb_find_mode_cvt()
322 cvt.refresh = mode->refresh; in fb_find_mode_cvt()
323 cvt.f_refresh = cvt.refresh; in fb_find_mode_cvt()
324 cvt.interlace = 1; in fb_find_mode_cvt()
326 if (!cvt.xres || !cvt.yres || !cvt.refresh) { in fb_find_mode_cvt()
331 if (!(cvt.refresh == 50 || cvt.refresh == 60 || cvt.refresh == 70 || in fb_find_mode_cvt()
332 cvt.refresh == 85)) { in fb_find_mode_cvt()
335 cvt.status = 1; in fb_find_mode_cvt()
338 cvt.xres &= ~(FB_CVT_CELLSIZE - 1); in fb_find_mode_cvt()
340 if (cvt.flags & FB_CVT_FLAG_INTERLACED) { in fb_find_mode_cvt()
341 cvt.interlace = 2; in fb_find_mode_cvt()
342 cvt.f_refresh *= 2; in fb_find_mode_cvt()
345 if (cvt.flags & FB_CVT_FLAG_REDUCED_BLANK) { in fb_find_mode_cvt()
346 if (cvt.refresh != 60) { in fb_find_mode_cvt()
349 cvt.status = 1; in fb_find_mode_cvt()
353 if (cvt.flags & FB_CVT_FLAG_MARGINS) { in fb_find_mode_cvt()
354 cvt.h_margin = (cvt.xres * 18)/1000; in fb_find_mode_cvt()
355 cvt.h_margin &= ~(FB_CVT_CELLSIZE - 1); in fb_find_mode_cvt()
356 cvt.v_margin = ((cvt.yres/cvt.interlace)* 18)/1000; in fb_find_mode_cvt()
359 cvt.aspect_ratio = fb_cvt_aspect_ratio(&cvt); in fb_find_mode_cvt()
360 cvt.active_pixels = cvt.xres + 2 * cvt.h_margin; in fb_find_mode_cvt()
361 cvt.hperiod = fb_cvt_hperiod(&cvt); in fb_find_mode_cvt()
362 cvt.vsync = fb_cvt_vbi_tab[cvt.aspect_ratio]; in fb_find_mode_cvt()
363 cvt.vtotal = fb_cvt_vtotal(&cvt); in fb_find_mode_cvt()
364 cvt.hblank = fb_cvt_hblank(&cvt); in fb_find_mode_cvt()
365 cvt.htotal = cvt.active_pixels + cvt.hblank; in fb_find_mode_cvt()
366 cvt.hsync = fb_cvt_hsync(&cvt); in fb_find_mode_cvt()
367 cvt.pixclock = fb_cvt_pixclock(&cvt); in fb_find_mode_cvt()
368 cvt.hfreq = cvt.pixclock/cvt.htotal; in fb_find_mode_cvt()
369 cvt.h_back_porch = cvt.hblank/2 + cvt.h_margin; in fb_find_mode_cvt()
370 cvt.h_front_porch = cvt.hblank - cvt.hsync - cvt.h_back_porch + in fb_find_mode_cvt()
371 2 * cvt.h_margin; in fb_find_mode_cvt()
372 cvt.v_front_porch = 3 + cvt.v_margin; in fb_find_mode_cvt()
373 cvt.v_back_porch = cvt.vtotal - cvt.yres/cvt.interlace - in fb_find_mode_cvt()
374 cvt.v_front_porch - cvt.vsync; in fb_find_mode_cvt()
375 fb_cvt_print_name(&cvt); in fb_find_mode_cvt()
376 fb_cvt_convert_to_mode(&cvt, mode); in fb_find_mode_cvt()