include/media/davinci/vpss.h

   1 /*
   2  * Copyright (C) 2009 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  * vpss - video processing subsystem module header file.
  19  *
  20  * Include this header file if a driver needs to configure vpss system
  21  * module. It exports a set of library functions  for video drivers to
  22  * configure vpss system module functions such as clock enable/disable,
  23  * vpss interrupt mux to arm, and other common vpss system module
  24  * functions.
  25  */
  26 #ifndef _VPSS_H
  27 #define _VPSS_H
  28
  29 /* selector for ccdc input selection on DM355 */
  30 enum vpss_ccdc_source_sel {
  31         VPSS_CCDCIN,
  32         VPSS_HSSIIN,
  33         VPSS_PGLPBK,    /* for DM365 only */
  34         VPSS_CCDCPG     /* for DM365 only */
  35 };
  36
  37 struct vpss_sync_pol {
  38         unsigned int ccdpg_hdpol:1;
  39         unsigned int ccdpg_vdpol:1;
  40 };
  41
  42 struct vpss_pg_frame_size {
  43         short hlpfr;
  44         short pplen;
  45 };
  46
  47 /* Used for enable/disable VPSS Clock */
  48 enum vpss_clock_sel {
  49         /* DM355/DM365 */
  50         VPSS_CCDC_CLOCK,
  51         VPSS_IPIPE_CLOCK,
  52         VPSS_H3A_CLOCK,
  53         VPSS_CFALD_CLOCK,
  54         /*
  55          * When using VPSS_VENC_CLOCK_SEL in vpss_enable_clock() api
  56          * following applies:-
  57          * en = 0 selects ENC_CLK
  58          * en = 1 selects ENC_CLK/2
  59          */
  60         VPSS_VENC_CLOCK_SEL,
  61         VPSS_VPBE_CLOCK,
  62         /* DM365 only clocks */
  63         VPSS_IPIPEIF_CLOCK,
  64         VPSS_RSZ_CLOCK,
  65         VPSS_BL_CLOCK,
  66         /*
  67          * When using VPSS_PCLK_INTERNAL in vpss_enable_clock() api
  68          * following applies:-
  69          * en = 0 disable internal PCLK
  70          * en = 1 enables internal PCLK
  71          */
  72         VPSS_PCLK_INTERNAL,
  73         /*
  74          * When using VPSS_PSYNC_CLOCK_SEL in vpss_enable_clock() api
  75          * following applies:-
  76          * en = 0 enables MMR clock
  77          * en = 1 enables VPSS clock
  78          */
  79         VPSS_PSYNC_CLOCK_SEL,
  80         VPSS_LDC_CLOCK_SEL,
  81         VPSS_OSD_CLOCK_SEL,
  82         VPSS_FDIF_CLOCK,
  83         VPSS_LDC_CLOCK
  84 };
  85
  86 /* select input to ccdc on dm355 */
  87 int vpss_select_ccdc_source(enum vpss_ccdc_source_sel src_sel);
  88 /* enable/disable a vpss clock, 0 - success, -1 - failure */
  89 int vpss_enable_clock(enum vpss_clock_sel clock_sel, int en);
  90 /* set sync polarity, only for DM365*/
  91 void dm365_vpss_set_sync_pol(struct vpss_sync_pol);
  92 /* set the PG_FRAME_SIZE register, only for DM365 */
  93 void dm365_vpss_set_pg_frame_size(struct vpss_pg_frame_size);
  94
  95 /* wbl reset for dm644x */
  96 enum vpss_wbl_sel {
  97         VPSS_PCR_AEW_WBL_0 = 16,
  98         VPSS_PCR_AF_WBL_0,
  99         VPSS_PCR_RSZ4_WBL_0,
 100         VPSS_PCR_RSZ3_WBL_0,
 101         VPSS_PCR_RSZ2_WBL_0,
 102         VPSS_PCR_RSZ1_WBL_0,
 103         VPSS_PCR_PREV_WBL_0,
 104         VPSS_PCR_CCDC_WBL_O,
 105 };
 106 /* clear wbl overflow flag for DM6446 */
 107 int vpss_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel);
 108
 109 /* set sync polarity*/
 110 void vpss_set_sync_pol(struct vpss_sync_pol sync);
 111 /* set the PG_FRAME_SIZE register */
 112 void vpss_set_pg_frame_size(struct vpss_pg_frame_size frame_size);
 113 /*
 114  * vpss_check_and_clear_interrupt - check and clear interrupt
 115  * @irq - common enumerator for IRQ
 116  *
 117  * Following return values used:-
 118  * 0 - interrupt occurred and cleared
 119  * 1 - interrupt not occurred
 120  * 2 - interrupt status not available
 121  */
 122 int vpss_dma_complete_interrupt(void);
 123
 124 #endif