From dbb6247d47e9d51ca470370becfa24665fa1eef7 Mon Sep 17 00:00:00 2001 From: Iliyan Malchev Date: Fri, 17 Jul 2009 13:10:30 +0200 Subject: Staging: HTC Dream: add qdsp support QDSP code is neccessarry for communication with some hardware components on HTC Dream, including camera hardware. It also drives DSP coproccessor. Signed-off-by: Pavel Machek Cc: Brian Swetland Cc: Iliyan Malchev Cc: San Mehat Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c | 65 +++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c (limited to 'drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c') diff --git a/drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c b/drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c new file mode 100644 index 000000000000..1e23ef392700 --- /dev/null +++ b/drivers/staging/dream/qdsp5/adsp_lpm_verify_cmd.c @@ -0,0 +1,65 @@ +/* arch/arm/mach-msm/qdsp5/adsp_lpm_verify_cmd.c + * + * Verificion code for aDSP LPM packets from userspace. + * + * Copyright (c) 2008 QUALCOMM Incorporated + * Copyright (C) 2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +#include +#include "adsp.h" + +int adsp_lpm_verify_cmd(struct msm_adsp_module *module, + unsigned int queue_id, void *cmd_data, + size_t cmd_size) +{ + uint32_t cmd_id, col_height, input_row_incr, output_row_incr, + input_size, output_size; + uint32_t size_mask = 0x0fff; + lpm_cmd_start *cmd; + + if (queue_id != QDSP_lpmCommandQueue) { + printk(KERN_ERR "adsp: module %s: wrong queue id %d\n", + module->name, queue_id); + return -1; + } + + cmd = (lpm_cmd_start *)cmd_data; + cmd_id = cmd->cmd_id; + + if (cmd_id == LPM_CMD_START) { + if (cmd_size != sizeof(lpm_cmd_start)) { + printk(KERN_ERR "adsp: module %s: wrong size %d, expect %d\n", + module->name, cmd_size, sizeof(lpm_cmd_start)); + return -1; + } + col_height = cmd->ip_data_cfg_part1 & size_mask; + input_row_incr = cmd->ip_data_cfg_part2 & size_mask; + output_row_incr = cmd->op_data_cfg_part1 & size_mask; + input_size = col_height * input_row_incr; + output_size = col_height * output_row_incr; + if ((cmd->ip_data_cfg_part4 && adsp_pmem_fixup(module, + (void **)(&cmd->ip_data_cfg_part4), + input_size)) || + (cmd->op_data_cfg_part3 && adsp_pmem_fixup(module, + (void **)(&cmd->op_data_cfg_part3), + output_size))) + return -1; + } else if (cmd_id > 1) { + printk(KERN_ERR "adsp: module %s: invalid cmd_id %d\n", + module->name, cmd_id); + return -1; + } + return 0; +} + -- cgit v1.2.3