Wenjun Zhang | e9647e2 | 2018-02-01 03:42:29 -0500 | [diff] [blame^] | 1 | /* Copyright (c) 2017-2018 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 | |
| 30 | #include <spi_qup.h> |
| 31 | #include <msm_panel.h> |
| 32 | #include <target/display.h> |
| 33 | #include <platform/gpio.h> |
| 34 | |
| 35 | #define SUCCESS 0 |
| 36 | #define FAIL 1 |
| 37 | |
| 38 | static struct qup_spi_dev *dev = NULL; |
| 39 | |
| 40 | static int mdss_spi_write_cmd(const char *buf) |
| 41 | { |
| 42 | int ret = 0; |
| 43 | |
| 44 | if (!dev) { |
| 45 | dprintf(CRITICAL, "SPI has not been initialized\n"); |
| 46 | return -ENODEV; |
| 47 | } |
| 48 | |
| 49 | dev->bytes_per_word = 1; |
| 50 | dev->bit_shift_en = 1; |
| 51 | |
| 52 | gpio_set(spi_dc_gpio.pin_id, 0); |
| 53 | ret = spi_qup_transfer(dev, buf, 1); |
| 54 | gpio_set(spi_dc_gpio.pin_id, 2); |
| 55 | if (ret) |
| 56 | dprintf(CRITICAL, "Send SPI command to panel failed\n"); |
| 57 | |
| 58 | return ret; |
| 59 | } |
| 60 | |
| 61 | static int mdss_spi_write_data(const char *buf, size_t len) |
| 62 | { |
| 63 | int ret = 0; |
| 64 | |
| 65 | if (!dev) { |
| 66 | dprintf(CRITICAL, "SPI has not been initialized\n"); |
| 67 | return -ENODEV; |
| 68 | } |
| 69 | |
| 70 | dev->bytes_per_word = 1; |
| 71 | dev->bit_shift_en = 1; |
| 72 | |
| 73 | gpio_set(spi_dc_gpio.pin_id, 2); |
| 74 | ret = spi_qup_transfer(dev, buf, len); |
| 75 | if (ret) |
| 76 | dprintf(CRITICAL, "Send SPI parameters to panel failed\n"); |
| 77 | |
| 78 | return ret; |
| 79 | } |
| 80 | |
| 81 | static int mdss_spi_write_frame(const char *buf, size_t len) |
| 82 | { |
| 83 | int ret = 0; |
| 84 | |
| 85 | if (!dev) { |
| 86 | dprintf(CRITICAL, "SPI has not been initialized\n"); |
| 87 | return -ENODEV; |
| 88 | } |
| 89 | |
| 90 | dev->bytes_per_word = 2; |
| 91 | dev->bit_shift_en = 1; |
| 92 | dev->unpack_en = 0; |
| 93 | |
| 94 | gpio_set(spi_dc_gpio.pin_id, 2); |
| 95 | ret = spi_qup_transfer(dev, buf, len); |
| 96 | |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | static void spi_read_panel_data(unsigned char *buf, int len) |
| 101 | { |
| 102 | int ret = 0; |
| 103 | |
| 104 | if (!dev) { |
| 105 | dprintf(CRITICAL, "SPI has not been initialized\n"); |
| 106 | return -ENODEV; |
| 107 | } |
| 108 | dev->bytes_per_word = 1; |
| 109 | dev->bit_shift_en = 1; |
| 110 | |
| 111 | gpio_set(spi_dc_gpio.pin_id, 0); |
| 112 | ret = spi_qup_transfer(dev, buf, len); |
| 113 | gpio_set(spi_dc_gpio.pin_id, 2); |
| 114 | |
| 115 | if (ret) |
| 116 | dprintf(CRITICAL, "Send SPI command to panel failed\n"); |
| 117 | |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | int mdss_spi_init(void) |
| 122 | { |
| 123 | if (!dev) { |
| 124 | dev = qup_blsp_spi_init(SPI_BLSP_ID, SPI_QUP_ID); |
| 125 | if (!dev) { |
| 126 | dprintf(CRITICAL, "Failed initializing SPI\n"); |
| 127 | return -ENODEV; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | gpio_tlmm_config(spi_dc_gpio.pin_id, 0, spi_dc_gpio.pin_direction, |
| 132 | spi_dc_gpio.pin_pull, spi_dc_gpio.pin_strength, |
| 133 | spi_dc_gpio.pin_state); |
| 134 | return SUCCESS; |
| 135 | } |
| 136 | |
| 137 | int mdss_spi_panel_init(struct msm_panel_info *pinfo) |
| 138 | { |
| 139 | int cmd_count = 0; |
| 140 | int ret = 0; |
| 141 | |
| 142 | while (cmd_count < pinfo->spi.num_of_panel_cmds) { |
| 143 | if (pinfo->spi.panel_cmds[cmd_count].cmds_post_tg){ |
| 144 | cmd_count ++; |
| 145 | continue; |
| 146 | } |
| 147 | |
| 148 | mdss_spi_write_cmd(pinfo->spi.panel_cmds[cmd_count].payload); |
| 149 | if (pinfo->spi.panel_cmds[cmd_count].size > 1) |
| 150 | mdss_spi_write_data( |
| 151 | pinfo->spi.panel_cmds[cmd_count].payload + 1, |
| 152 | pinfo->spi.panel_cmds[cmd_count].size - 1); |
| 153 | |
| 154 | if (pinfo->spi.panel_cmds[cmd_count].wait) |
| 155 | mdelay(pinfo->spi.panel_cmds[cmd_count].wait); |
| 156 | |
| 157 | cmd_count ++; |
| 158 | } |
| 159 | return SUCCESS; |
| 160 | } |
| 161 | |
| 162 | int mdss_spi_on(struct msm_panel_info *pinfo, struct fbcon_config *fb) |
| 163 | { |
| 164 | int buf_size = 0; |
| 165 | int ret = 0; |
| 166 | |
| 167 | buf_size = fb->width * fb->height * (fb->bpp / 8); |
| 168 | ret = mdss_spi_write_frame(fb->base, buf_size); |
| 169 | if (ret) |
| 170 | dprintf(CRITICAL, "Send SPI frame data to panel failed\n"); |
| 171 | |
| 172 | return ret; |
| 173 | } |