aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c
diff options
context:
space:
mode:
authorArun Kumar K <arun.kk@samsung.com>2012-10-03 22:19:07 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-05 22:44:40 -0300
commit77a788fc2d4089c64eb355a004f1f16b22eb3ab1 (patch)
tree57375840139518336f610247f422f5fa0094b19e /drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c
parent2e81dde94316dfaa19f0b6f9d4131ef7eaf124a3 (diff)
[media] s5p-mfc: Prepare driver for callback based re-architecture
The patch renames hardware specific opr and cmd files to opr_v5 and cmd_v5 respectively. This is done for accomodating firmware v6. Also the shared memory management files are removed and the functionality is added to the opr_v5 file. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Acked-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c')
-rw-r--r--drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c b/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c
new file mode 100644
index 000000000000..cdd02b9295c1
--- /dev/null
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v5.c
@@ -0,0 +1,120 @@
+/*
+ * linux/drivers/media/platform/s5p-mfc/s5p_mfc_cmd.c
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "regs-mfc.h"
+#include "s5p_mfc_cmd_v5.h"
+#include "s5p_mfc_common.h"
+#include "s5p_mfc_debug.h"
+
+/* This function is used to send a command to the MFC */
+static int s5p_mfc_cmd_host2risc(struct s5p_mfc_dev *dev, int cmd,
+ struct s5p_mfc_cmd_args *args)
+{
+ int cur_cmd;
+ unsigned long timeout;
+
+ timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
+ /* wait until host to risc command register becomes 'H2R_CMD_EMPTY' */
+ do {
+ if (time_after(jiffies, timeout)) {
+ mfc_err("Timeout while waiting for hardware\n");
+ return -EIO;
+ }
+ cur_cmd = mfc_read(dev, S5P_FIMV_HOST2RISC_CMD);
+ } while (cur_cmd != S5P_FIMV_H2R_CMD_EMPTY);
+ mfc_write(dev, args->arg[0], S5P_FIMV_HOST2RISC_ARG1);
+ mfc_write(dev, args->arg[1], S5P_FIMV_HOST2RISC_ARG2);
+ mfc_write(dev, args->arg[2], S5P_FIMV_HOST2RISC_ARG3);
+ mfc_write(dev, args->arg[3], S5P_FIMV_HOST2RISC_ARG4);
+ /* Issue the command */
+ mfc_write(dev, cmd, S5P_FIMV_HOST2RISC_CMD);
+ return 0;
+}
+
+/* Initialize the MFC */
+int s5p_mfc_sys_init_cmd(struct s5p_mfc_dev *dev)
+{
+ struct s5p_mfc_cmd_args h2r_args;
+
+ memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
+ h2r_args.arg[0] = dev->fw_size;
+ return s5p_mfc_cmd_host2risc(dev, S5P_FIMV_H2R_CMD_SYS_INIT, &h2r_args);
+}
+
+/* Suspend the MFC hardware */
+int s5p_mfc_sleep_cmd(struct s5p_mfc_dev *dev)
+{
+ struct s5p_mfc_cmd_args h2r_args;
+
+ memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
+ return s5p_mfc_cmd_host2risc(dev, S5P_FIMV_H2R_CMD_SLEEP, &h2r_args);
+}
+
+/* Wake up the MFC hardware */
+int s5p_mfc_wakeup_cmd(struct s5p_mfc_dev *dev)
+{
+ struct s5p_mfc_cmd_args h2r_args;
+
+ memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
+ return s5p_mfc_cmd_host2risc(dev, S5P_FIMV_H2R_CMD_WAKEUP, &h2r_args);
+}
+
+
+int s5p_mfc_open_inst_cmd(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ struct s5p_mfc_cmd_args h2r_args;
+ int ret;
+
+ /* Preparing decoding - getting instance number */
+ mfc_debug(2, "Getting instance number (codec: %d)\n", ctx->codec_mode);
+ dev->curr_ctx = ctx->num;
+ memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
+ h2r_args.arg[0] = ctx->codec_mode;
+ h2r_args.arg[1] = 0; /* no crc & no pixelcache */
+ h2r_args.arg[2] = ctx->ctx_ofs;
+ h2r_args.arg[3] = ctx->ctx_size;
+ ret = s5p_mfc_cmd_host2risc(dev, S5P_FIMV_H2R_CMD_OPEN_INSTANCE,
+ &h2r_args);
+ if (ret) {
+ mfc_err("Failed to create a new instance\n");
+ ctx->state = MFCINST_ERROR;
+ }
+ return ret;
+}
+
+int s5p_mfc_close_inst_cmd(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ struct s5p_mfc_cmd_args h2r_args;
+ int ret;
+
+ if (ctx->state == MFCINST_FREE) {
+ mfc_err("Instance already returned\n");
+ ctx->state = MFCINST_ERROR;
+ return -EINVAL;
+ }
+ /* Closing decoding instance */
+ mfc_debug(2, "Returning instance number %d\n", ctx->inst_no);
+ dev->curr_ctx = ctx->num;
+ memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args));
+ h2r_args.arg[0] = ctx->inst_no;
+ ret = s5p_mfc_cmd_host2risc(dev, S5P_FIMV_H2R_CMD_CLOSE_INSTANCE,
+ &h2r_args);
+ if (ret) {
+ mfc_err("Failed to return an instance\n");
+ ctx->state = MFCINST_ERROR;
+ return -EINVAL;
+ }
+ return 0;
+}
+

Privacy Policy