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path: root/drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c
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Diffstat (limited to 'drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c')
-rw-r--r--drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c b/drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c
deleted file mode 100644
index 08a5cfe..0000000
--- a/drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * linux/drivers/media/video/s5p-mfc/s5p_mfc_ctrl.c
- *
- * Copyright (c) 2010 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 <linux/delay.h>
-#include <linux/err.h>
-#include <linux/firmware.h>
-#include <linux/jiffies.h>
-#include <linux/sched.h>
-#include "regs-mfc.h"
-#include "s5p_mfc_cmd.h"
-#include "s5p_mfc_common.h"
-#include "s5p_mfc_debug.h"
-#include "s5p_mfc_intr.h"
-#include "s5p_mfc_pm.h"
-
-static void *s5p_mfc_bitproc_buf;
-static size_t s5p_mfc_bitproc_phys;
-static unsigned char *s5p_mfc_bitproc_virt;
-
-/* Allocate and load firmware */
-int s5p_mfc_alloc_and_load_firmware(struct s5p_mfc_dev *dev)
-{
- struct firmware *fw_blob;
- size_t bank2_base_phys;
- void *b_base;
- int err;
-
- /* Firmare has to be present as a separate file or compiled
- * into kernel. */
- mfc_debug_enter();
- err = request_firmware((const struct firmware **)&fw_blob,
- "s5p-mfc.fw", dev->v4l2_dev.dev);
- if (err != 0) {
- mfc_err("Firmware is not present in the /lib/firmware directory nor compiled in kernel\n");
- return -EINVAL;
- }
- dev->fw_size = ALIGN(fw_blob->size, FIRMWARE_ALIGN);
- if (s5p_mfc_bitproc_buf) {
- mfc_err("Attempting to allocate firmware when it seems that it is already loaded\n");
- release_firmware(fw_blob);
- return -ENOMEM;
- }
- s5p_mfc_bitproc_buf = vb2_dma_contig_memops.alloc(
- dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], dev->fw_size);
- if (IS_ERR(s5p_mfc_bitproc_buf)) {
- s5p_mfc_bitproc_buf = NULL;
- mfc_err("Allocating bitprocessor buffer failed\n");
- release_firmware(fw_blob);
- return -ENOMEM;
- }
- s5p_mfc_bitproc_phys = s5p_mfc_mem_cookie(
- dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], s5p_mfc_bitproc_buf);
- if (s5p_mfc_bitproc_phys & ((1 << MFC_BASE_ALIGN_ORDER) - 1)) {
- mfc_err("The base memory for bank 1 is not aligned to 128KB\n");
- vb2_dma_contig_memops.put(s5p_mfc_bitproc_buf);
- s5p_mfc_bitproc_phys = 0;
- s5p_mfc_bitproc_buf = NULL;
- release_firmware(fw_blob);
- return -EIO;
- }
- s5p_mfc_bitproc_virt = vb2_dma_contig_memops.vaddr(s5p_mfc_bitproc_buf);
- if (!s5p_mfc_bitproc_virt) {
- mfc_err("Bitprocessor memory remap failed\n");
- vb2_dma_contig_memops.put(s5p_mfc_bitproc_buf);
- s5p_mfc_bitproc_phys = 0;
- s5p_mfc_bitproc_buf = NULL;
- release_firmware(fw_blob);
- return -EIO;
- }
- dev->bank1 = s5p_mfc_bitproc_phys;
- b_base = vb2_dma_contig_memops.alloc(
- dev->alloc_ctx[MFC_BANK2_ALLOC_CTX], 1 << MFC_BANK2_ALIGN_ORDER);
- if (IS_ERR(b_base)) {
- vb2_dma_contig_memops.put(s5p_mfc_bitproc_buf);
- s5p_mfc_bitproc_phys = 0;
- s5p_mfc_bitproc_buf = NULL;
- mfc_err("Allocating bank2 base failed\n");
- release_firmware(fw_blob);
- return -ENOMEM;
- }
- bank2_base_phys = s5p_mfc_mem_cookie(
- dev->alloc_ctx[MFC_BANK2_ALLOC_CTX], b_base);
- vb2_dma_contig_memops.put(b_base);
- if (bank2_base_phys & ((1 << MFC_BASE_ALIGN_ORDER) - 1)) {
- mfc_err("The base memory for bank 2 is not aligned to 128KB\n");
- vb2_dma_contig_memops.put(s5p_mfc_bitproc_buf);
- s5p_mfc_bitproc_phys = 0;
- s5p_mfc_bitproc_buf = NULL;
- release_firmware(fw_blob);
- return -EIO;
- }
- dev->bank2 = bank2_base_phys;
- memcpy(s5p_mfc_bitproc_virt, fw_blob->data, fw_blob->size);
- wmb();
- release_firmware(fw_blob);
- mfc_debug_leave();
- return 0;
-}
-
-/* Reload firmware to MFC */
-int s5p_mfc_reload_firmware(struct s5p_mfc_dev *dev)
-{
- struct firmware *fw_blob;
- int err;
-
- /* Firmare has to be present as a separate file or compiled
- * into kernel. */
- mfc_debug_enter();
- err = request_firmware((const struct firmware **)&fw_blob,
- "s5p-mfc.fw", dev->v4l2_dev.dev);
- if (err != 0) {
- mfc_err("Firmware is not present in the /lib/firmware directory nor compiled in kernel\n");
- return -EINVAL;
- }
- if (fw_blob->size > dev->fw_size) {
- mfc_err("MFC firmware is too big to be loaded\n");
- release_firmware(fw_blob);
- return -ENOMEM;
- }
- if (s5p_mfc_bitproc_buf == NULL || s5p_mfc_bitproc_phys == 0) {
- mfc_err("MFC firmware is not allocated or was not mapped correctly\n");
- release_firmware(fw_blob);
- return -EINVAL;
- }
- memcpy(s5p_mfc_bitproc_virt, fw_blob->data, fw_blob->size);
- wmb();
- release_firmware(fw_blob);
- mfc_debug_leave();
- return 0;
-}
-
-/* Release firmware memory */
-int s5p_mfc_release_firmware(struct s5p_mfc_dev *dev)
-{
- /* Before calling this function one has to make sure
- * that MFC is no longer processing */
- if (!s5p_mfc_bitproc_buf)
- return -EINVAL;
- vb2_dma_contig_memops.put(s5p_mfc_bitproc_buf);
- s5p_mfc_bitproc_virt = NULL;
- s5p_mfc_bitproc_phys = 0;
- s5p_mfc_bitproc_buf = NULL;
- return 0;
-}
-
-/* Reset the device */
-int s5p_mfc_reset(struct s5p_mfc_dev *dev)
-{
- unsigned int mc_status;
- unsigned long timeout;
-
- mfc_debug_enter();
- /* Stop procedure */
- /* reset RISC */
- mfc_write(dev, 0x3f6, S5P_FIMV_SW_RESET);
- /* All reset except for MC */
- mfc_write(dev, 0x3e2, S5P_FIMV_SW_RESET);
- mdelay(10);
-
- timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
- /* Check MC status */
- do {
- if (time_after(jiffies, timeout)) {
- mfc_err("Timeout while resetting MFC\n");
- return -EIO;
- }
-
- mc_status = mfc_read(dev, S5P_FIMV_MC_STATUS);
-
- } while (mc_status & 0x3);
-
- mfc_write(dev, 0x0, S5P_FIMV_SW_RESET);
- mfc_write(dev, 0x3fe, S5P_FIMV_SW_RESET);
- mfc_debug_leave();
- return 0;
-}
-
-static inline void s5p_mfc_init_memctrl(struct s5p_mfc_dev *dev)
-{
- mfc_write(dev, dev->bank1, S5P_FIMV_MC_DRAMBASE_ADR_A);
- mfc_write(dev, dev->bank2, S5P_FIMV_MC_DRAMBASE_ADR_B);
- mfc_debug(2, "Bank1: %08x, Bank2: %08x\n", dev->bank1, dev->bank2);
-}
-
-static inline void s5p_mfc_clear_cmds(struct s5p_mfc_dev *dev)
-{
- mfc_write(dev, 0xffffffff, S5P_FIMV_SI_CH0_INST_ID);
- mfc_write(dev, 0xffffffff, S5P_FIMV_SI_CH1_INST_ID);
- mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD);
- mfc_write(dev, 0, S5P_FIMV_HOST2RISC_CMD);
-}
-
-/* Initialize hardware */
-int s5p_mfc_init_hw(struct s5p_mfc_dev *dev)
-{
- unsigned int ver;
- int ret;
-
- mfc_debug_enter();
- if (!s5p_mfc_bitproc_buf)
- return -EINVAL;
-
- /* 0. MFC reset */
- mfc_debug(2, "MFC reset..\n");
- s5p_mfc_clock_on();
- ret = s5p_mfc_reset(dev);
- if (ret) {
- mfc_err("Failed to reset MFC - timeout\n");
- return ret;
- }
- mfc_debug(2, "Done MFC reset..\n");
- /* 1. Set DRAM base Addr */
- s5p_mfc_init_memctrl(dev);
- /* 2. Initialize registers of channel I/F */
- s5p_mfc_clear_cmds(dev);
- /* 3. Release reset signal to the RISC */
- s5p_mfc_clean_dev_int_flags(dev);
- mfc_write(dev, 0x3ff, S5P_FIMV_SW_RESET);
- mfc_debug(2, "Will now wait for completion of firmware transfer\n");
- if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_FW_STATUS_RET)) {
- mfc_err("Failed to load firmware\n");
- s5p_mfc_reset(dev);
- s5p_mfc_clock_off();
- return -EIO;
- }
- s5p_mfc_clean_dev_int_flags(dev);
- /* 4. Initialize firmware */
- ret = s5p_mfc_sys_init_cmd(dev);
- if (ret) {
- mfc_err("Failed to send command to MFC - timeout\n");
- s5p_mfc_reset(dev);
- s5p_mfc_clock_off();
- return ret;
- }
- mfc_debug(2, "Ok, now will write a command to init the system\n");
- if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_SYS_INIT_RET)) {
- mfc_err("Failed to load firmware\n");
- s5p_mfc_reset(dev);
- s5p_mfc_clock_off();
- return -EIO;
- }
- dev->int_cond = 0;
- if (dev->int_err != 0 || dev->int_type !=
- S5P_FIMV_R2H_CMD_SYS_INIT_RET) {
- /* Failure. */
- mfc_err("Failed to init firmware - error: %d int: %d\n",
- dev->int_err, dev->int_type);
- s5p_mfc_reset(dev);
- s5p_mfc_clock_off();
- return -EIO;
- }
- ver = mfc_read(dev, S5P_FIMV_FW_VERSION);
- mfc_debug(2, "MFC F/W version : %02xyy, %02xmm, %02xdd\n",
- (ver >> 16) & 0xFF, (ver >> 8) & 0xFF, ver & 0xFF);
- s5p_mfc_clock_off();
- mfc_debug_leave();
- return 0;
-}
-
-
-int s5p_mfc_sleep(struct s5p_mfc_dev *dev)
-{
- int ret;
-
- mfc_debug_enter();
- s5p_mfc_clock_on();
- s5p_mfc_clean_dev_int_flags(dev);
- ret = s5p_mfc_sleep_cmd(dev);
- if (ret) {
- mfc_err("Failed to send command to MFC - timeout\n");
- return ret;
- }
- if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_SLEEP_RET)) {
- mfc_err("Failed to sleep\n");
- return -EIO;
- }
- s5p_mfc_clock_off();
- dev->int_cond = 0;
- if (dev->int_err != 0 || dev->int_type !=
- S5P_FIMV_R2H_CMD_SLEEP_RET) {
- /* Failure. */
- mfc_err("Failed to sleep - error: %d int: %d\n", dev->int_err,
- dev->int_type);
- return -EIO;
- }
- mfc_debug_leave();
- return ret;
-}
-
-int s5p_mfc_wakeup(struct s5p_mfc_dev *dev)
-{
- int ret;
-
- mfc_debug_enter();
- /* 0. MFC reset */
- mfc_debug(2, "MFC reset..\n");
- s5p_mfc_clock_on();
- ret = s5p_mfc_reset(dev);
- if (ret) {
- mfc_err("Failed to reset MFC - timeout\n");
- return ret;
- }
- mfc_debug(2, "Done MFC reset..\n");
- /* 1. Set DRAM base Addr */
- s5p_mfc_init_memctrl(dev);
- /* 2. Initialize registers of channel I/F */
- s5p_mfc_clear_cmds(dev);
- s5p_mfc_clean_dev_int_flags(dev);
- /* 3. Initialize firmware */
- ret = s5p_mfc_wakeup_cmd(dev);
- if (ret) {
- mfc_err("Failed to send command to MFC - timeout\n");
- return ret;
- }
- /* 4. Release reset signal to the RISC */
- mfc_write(dev, 0x3ff, S5P_FIMV_SW_RESET);
- mfc_debug(2, "Ok, now will write a command to wakeup the system\n");
- if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_WAKEUP_RET)) {
- mfc_err("Failed to load firmware\n");
- return -EIO;
- }
- s5p_mfc_clock_off();
- dev->int_cond = 0;
- if (dev->int_err != 0 || dev->int_type !=
- S5P_FIMV_R2H_CMD_WAKEUP_RET) {
- /* Failure. */
- mfc_err("Failed to wakeup - error: %d int: %d\n", dev->int_err,
- dev->int_type);
- return -EIO;
- }
- mfc_debug_leave();
- return 0;
-}
-
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