summaryrefslogtreecommitdiff
path: root/include/media/blackfin/ppi.h
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/media/blackfin/ppi.h
Initial import
Diffstat (limited to 'include/media/blackfin/ppi.h')
-rw-r--r--include/media/blackfin/ppi.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/include/media/blackfin/ppi.h b/include/media/blackfin/ppi.h
new file mode 100644
index 000000000..4900baedd
--- /dev/null
+++ b/include/media/blackfin/ppi.h
@@ -0,0 +1,98 @@
+/*
+ * Analog Devices PPI header file
+ *
+ * Copyright (c) 2011 Analog Devices Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _PPI_H_
+#define _PPI_H_
+
+#include <linux/interrupt.h>
+#include <asm/blackfin.h>
+#include <asm/bfin_ppi.h>
+
+/* EPPI */
+#ifdef EPPI_EN
+#define PORT_EN EPPI_EN
+#define PORT_DIR EPPI_DIR
+#define DMA32 0
+#define PACK_EN PACKEN
+#endif
+
+/* EPPI3 */
+#ifdef EPPI0_CTL2
+#define PORT_EN EPPI_CTL_EN
+#define PORT_DIR EPPI_CTL_DIR
+#define PACK_EN EPPI_CTL_PACKEN
+#define DMA32 0
+#define DLEN_8 EPPI_CTL_DLEN08
+#define DLEN_16 EPPI_CTL_DLEN16
+#endif
+
+struct ppi_if;
+
+struct ppi_params {
+ u32 width; /* width in pixels */
+ u32 height; /* height in lines */
+ u32 hdelay; /* delay after the HSYNC in pixels */
+ u32 vdelay; /* delay after the VSYNC in lines */
+ u32 line; /* total pixels per line */
+ u32 frame; /* total lines per frame */
+ u32 hsync; /* HSYNC length in pixels */
+ u32 vsync; /* VSYNC length in lines */
+ int bpp; /* bits per pixel */
+ int dlen; /* data length for ppi in bits */
+ u32 ppi_control; /* ppi configuration */
+ u32 int_mask; /* interrupt mask */
+};
+
+struct ppi_ops {
+ int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler);
+ void (*detach_irq)(struct ppi_if *ppi);
+ int (*start)(struct ppi_if *ppi);
+ int (*stop)(struct ppi_if *ppi);
+ int (*set_params)(struct ppi_if *ppi, struct ppi_params *params);
+ void (*update_addr)(struct ppi_if *ppi, unsigned long addr);
+};
+
+enum ppi_type {
+ PPI_TYPE_PPI,
+ PPI_TYPE_EPPI,
+ PPI_TYPE_EPPI3,
+};
+
+struct ppi_info {
+ enum ppi_type type;
+ int dma_ch;
+ int irq_err;
+ void __iomem *base;
+ const unsigned short *pin_req;
+};
+
+struct ppi_if {
+ struct device *dev;
+ unsigned long ppi_control;
+ const struct ppi_ops *ops;
+ const struct ppi_info *info;
+ bool err_int; /* if we need request error interrupt */
+ bool err; /* if ppi has fifo error */
+ void *priv;
+};
+
+struct ppi_if *ppi_create_instance(struct platform_device *pdev,
+ const struct ppi_info *info);
+void ppi_delete_instance(struct ppi_if *ppi);
+#endif