| Aparna Mallavarapu | ca67688 | 2015-01-19 20:39:06 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <debug.h> |
| 30 | #include <reg.h> |
| 31 | #include <platform/iomap.h> |
| 32 | #include <platform/gpio.h> |
| 33 | #include <blsp_qup.h> |
| 34 | |
| 35 | void gpio_tlmm_config(uint32_t gpio, uint8_t func, |
| 36 | uint8_t dir, uint8_t pull, |
| 37 | uint8_t drvstr, uint32_t enable) |
| 38 | { |
| 39 | uint32_t val = 0; |
| 40 | |
| 41 | val |= pull; |
| 42 | val |= func << 2; |
| 43 | val |= drvstr << 6; |
| 44 | val |= enable << 9; |
| 45 | |
| 46 | writel(val, (uint32_t *)GPIO_CONFIG_ADDR(gpio)); |
| 47 | return; |
| 48 | } |
| 49 | |
| 50 | void gpio_set_dir(uint32_t gpio, uint32_t dir) |
| 51 | { |
| 52 | writel(dir, (uint32_t *)GPIO_IN_OUT_ADDR(gpio)); |
| 53 | |
| 54 | return; |
| 55 | } |
| 56 | |
| 57 | uint32_t gpio_status(uint32_t gpio) |
| 58 | { |
| 59 | return readl(GPIO_IN_OUT_ADDR(gpio)) & GPIO_IN; |
| 60 | } |
| 61 | |
| 62 | /* Configure gpio for blsp uart 2 */ |
| 63 | void gpio_config_uart_dm(uint8_t id) |
| 64 | { |
| 65 | /* configure rx gpio */ |
| 66 | gpio_tlmm_config(5, 2, GPIO_INPUT, GPIO_NO_PULL, |
| 67 | GPIO_8MA, GPIO_DISABLE); |
| 68 | |
| 69 | /* configure tx gpio */ |
| 70 | gpio_tlmm_config(4, 2, GPIO_OUTPUT, GPIO_NO_PULL, |
| 71 | GPIO_8MA, GPIO_DISABLE); |
| 72 | } |