diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/gpu/drm/panel/panel-ld9040.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/panel/panel-ld9040.c')
-rw-r--r-- | kernel/drivers/gpu/drm/panel/panel-ld9040.c | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/kernel/drivers/gpu/drm/panel/panel-ld9040.c b/kernel/drivers/gpu/drm/panel/panel-ld9040.c deleted file mode 100644 index 08cf2c588..000000000 --- a/kernel/drivers/gpu/drm/panel/panel-ld9040.c +++ /dev/null @@ -1,389 +0,0 @@ -/* - * ld9040 AMOLED LCD drm_panel driver. - * - * Copyright (c) 2014 Samsung Electronics Co., Ltd - * Derived from drivers/video/backlight/ld9040.c - * - * Andrzej Hajda <a.hajda@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <drm/drmP.h> -#include <drm/drm_panel.h> - -#include <linux/gpio/consumer.h> -#include <linux/regulator/consumer.h> -#include <linux/spi/spi.h> - -#include <video/mipi_display.h> -#include <video/of_videomode.h> -#include <video/videomode.h> - -/* Manufacturer Command Set */ -#define MCS_MANPWR 0xb0 -#define MCS_ELVSS_ON 0xb1 -#define MCS_USER_SETTING 0xf0 -#define MCS_DISPCTL 0xf2 -#define MCS_POWER_CTRL 0xf4 -#define MCS_GTCON 0xf7 -#define MCS_PANEL_CONDITION 0xf8 -#define MCS_GAMMA_SET1 0xf9 -#define MCS_GAMMA_CTRL 0xfb - -/* array of gamma tables for gamma value 2.2 */ -static u8 const ld9040_gammas[25][22] = { - { 0xf9, 0x00, 0x13, 0xb2, 0xba, 0xd2, 0x00, 0x30, 0x00, 0xaf, 0xc0, - 0xb8, 0xcd, 0x00, 0x3d, 0x00, 0xa8, 0xb8, 0xb7, 0xcd, 0x00, 0x44 }, - { 0xf9, 0x00, 0x13, 0xb9, 0xb9, 0xd0, 0x00, 0x3c, 0x00, 0xaf, 0xbf, - 0xb6, 0xcb, 0x00, 0x4b, 0x00, 0xa8, 0xb9, 0xb5, 0xcc, 0x00, 0x52 }, - { 0xf9, 0x00, 0x13, 0xba, 0xb9, 0xcd, 0x00, 0x41, 0x00, 0xb0, 0xbe, - 0xb5, 0xc9, 0x00, 0x51, 0x00, 0xa9, 0xb9, 0xb5, 0xca, 0x00, 0x57 }, - { 0xf9, 0x00, 0x13, 0xb9, 0xb8, 0xcd, 0x00, 0x46, 0x00, 0xb1, 0xbc, - 0xb5, 0xc8, 0x00, 0x56, 0x00, 0xaa, 0xb8, 0xb4, 0xc9, 0x00, 0x5d }, - { 0xf9, 0x00, 0x13, 0xba, 0xb8, 0xcb, 0x00, 0x4b, 0x00, 0xb3, 0xbc, - 0xb4, 0xc7, 0x00, 0x5c, 0x00, 0xac, 0xb8, 0xb4, 0xc8, 0x00, 0x62 }, - { 0xf9, 0x00, 0x13, 0xbb, 0xb7, 0xca, 0x00, 0x4f, 0x00, 0xb4, 0xbb, - 0xb3, 0xc7, 0x00, 0x60, 0x00, 0xad, 0xb8, 0xb4, 0xc7, 0x00, 0x67 }, - { 0xf9, 0x00, 0x47, 0xba, 0xb6, 0xca, 0x00, 0x53, 0x00, 0xb5, 0xbb, - 0xb3, 0xc6, 0x00, 0x65, 0x00, 0xae, 0xb8, 0xb3, 0xc7, 0x00, 0x6c }, - { 0xf9, 0x00, 0x71, 0xbb, 0xb5, 0xc8, 0x00, 0x57, 0x00, 0xb5, 0xbb, - 0xb0, 0xc5, 0x00, 0x6a, 0x00, 0xae, 0xb9, 0xb1, 0xc6, 0x00, 0x70 }, - { 0xf9, 0x00, 0x7b, 0xbb, 0xb4, 0xc8, 0x00, 0x5b, 0x00, 0xb5, 0xba, - 0xb1, 0xc4, 0x00, 0x6e, 0x00, 0xae, 0xb9, 0xb0, 0xc5, 0x00, 0x75 }, - { 0xf9, 0x00, 0x82, 0xba, 0xb4, 0xc7, 0x00, 0x5f, 0x00, 0xb5, 0xba, - 0xb0, 0xc3, 0x00, 0x72, 0x00, 0xae, 0xb8, 0xb0, 0xc3, 0x00, 0x7a }, - { 0xf9, 0x00, 0x89, 0xba, 0xb3, 0xc8, 0x00, 0x62, 0x00, 0xb6, 0xba, - 0xaf, 0xc3, 0x00, 0x76, 0x00, 0xaf, 0xb7, 0xae, 0xc4, 0x00, 0x7e }, - { 0xf9, 0x00, 0x8b, 0xb9, 0xb3, 0xc7, 0x00, 0x65, 0x00, 0xb7, 0xb8, - 0xaf, 0xc3, 0x00, 0x7a, 0x00, 0x80, 0xb6, 0xae, 0xc4, 0x00, 0x81 }, - { 0xf9, 0x00, 0x93, 0xba, 0xb3, 0xc5, 0x00, 0x69, 0x00, 0xb8, 0xb9, - 0xae, 0xc1, 0x00, 0x7f, 0x00, 0xb0, 0xb6, 0xae, 0xc3, 0x00, 0x85 }, - { 0xf9, 0x00, 0x97, 0xba, 0xb2, 0xc5, 0x00, 0x6c, 0x00, 0xb8, 0xb8, - 0xae, 0xc1, 0x00, 0x82, 0x00, 0xb0, 0xb6, 0xae, 0xc2, 0x00, 0x89 }, - { 0xf9, 0x00, 0x9a, 0xba, 0xb1, 0xc4, 0x00, 0x6f, 0x00, 0xb8, 0xb8, - 0xad, 0xc0, 0x00, 0x86, 0x00, 0xb0, 0xb7, 0xad, 0xc0, 0x00, 0x8d }, - { 0xf9, 0x00, 0x9c, 0xb9, 0xb0, 0xc4, 0x00, 0x72, 0x00, 0xb8, 0xb8, - 0xac, 0xbf, 0x00, 0x8a, 0x00, 0xb0, 0xb6, 0xac, 0xc0, 0x00, 0x91 }, - { 0xf9, 0x00, 0x9e, 0xba, 0xb0, 0xc2, 0x00, 0x75, 0x00, 0xb9, 0xb8, - 0xab, 0xbe, 0x00, 0x8e, 0x00, 0xb0, 0xb6, 0xac, 0xbf, 0x00, 0x94 }, - { 0xf9, 0x00, 0xa0, 0xb9, 0xaf, 0xc3, 0x00, 0x77, 0x00, 0xb9, 0xb7, - 0xab, 0xbe, 0x00, 0x90, 0x00, 0xb0, 0xb6, 0xab, 0xbf, 0x00, 0x97 }, - { 0xf9, 0x00, 0xa2, 0xb9, 0xaf, 0xc2, 0x00, 0x7a, 0x00, 0xb9, 0xb7, - 0xaa, 0xbd, 0x00, 0x94, 0x00, 0xb0, 0xb5, 0xab, 0xbf, 0x00, 0x9a }, - { 0xf9, 0x00, 0xa4, 0xb9, 0xaf, 0xc1, 0x00, 0x7d, 0x00, 0xb9, 0xb6, - 0xaa, 0xbb, 0x00, 0x97, 0x00, 0xb1, 0xb5, 0xaa, 0xbf, 0x00, 0x9d }, - { 0xf9, 0x00, 0xa4, 0xb8, 0xb0, 0xbf, 0x00, 0x80, 0x00, 0xb8, 0xb6, - 0xaa, 0xbc, 0x00, 0x9a, 0x00, 0xb0, 0xb5, 0xab, 0xbd, 0x00, 0xa0 }, - { 0xf9, 0x00, 0xa8, 0xb8, 0xae, 0xbe, 0x00, 0x84, 0x00, 0xb9, 0xb7, - 0xa8, 0xbc, 0x00, 0x9d, 0x00, 0xb2, 0xb5, 0xaa, 0xbc, 0x00, 0xa4 }, - { 0xf9, 0x00, 0xa9, 0xb6, 0xad, 0xbf, 0x00, 0x86, 0x00, 0xb8, 0xb5, - 0xa8, 0xbc, 0x00, 0xa0, 0x00, 0xb3, 0xb3, 0xa9, 0xbc, 0x00, 0xa7 }, - { 0xf9, 0x00, 0xa9, 0xb7, 0xae, 0xbd, 0x00, 0x89, 0x00, 0xb7, 0xb6, - 0xa8, 0xba, 0x00, 0xa4, 0x00, 0xb1, 0xb4, 0xaa, 0xbb, 0x00, 0xaa }, - { 0xf9, 0x00, 0xa7, 0xb4, 0xae, 0xbf, 0x00, 0x91, 0x00, 0xb2, 0xb4, - 0xaa, 0xbb, 0x00, 0xac, 0x00, 0xb3, 0xb1, 0xaa, 0xbc, 0x00, 0xb3 }, -}; - -struct ld9040 { - struct device *dev; - struct drm_panel panel; - - struct regulator_bulk_data supplies[2]; - struct gpio_desc *reset_gpio; - u32 power_on_delay; - u32 reset_delay; - struct videomode vm; - u32 width_mm; - u32 height_mm; - - int brightness; - - /* This field is tested by functions directly accessing bus before - * transfer, transfer is skipped if it is set. In case of transfer - * failure or unexpected response the field is set to error value. - * Such construct allows to eliminate many checks in higher level - * functions. - */ - int error; -}; - -static inline struct ld9040 *panel_to_ld9040(struct drm_panel *panel) -{ - return container_of(panel, struct ld9040, panel); -} - -static int ld9040_clear_error(struct ld9040 *ctx) -{ - int ret = ctx->error; - - ctx->error = 0; - return ret; -} - -static int ld9040_spi_write_word(struct ld9040 *ctx, u16 data) -{ - struct spi_device *spi = to_spi_device(ctx->dev); - struct spi_transfer xfer = { - .len = 2, - .tx_buf = &data, - }; - struct spi_message msg; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - - return spi_sync(spi, &msg); -} - -static void ld9040_dcs_write(struct ld9040 *ctx, const u8 *data, size_t len) -{ - int ret = 0; - - if (ctx->error < 0 || len == 0) - return; - - dev_dbg(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data); - ret = ld9040_spi_write_word(ctx, *data); - - while (!ret && --len) { - ++data; - ret = ld9040_spi_write_word(ctx, *data | 0x100); - } - - if (ret) { - dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret, - (int)len, data); - ctx->error = ret; - } - - usleep_range(300, 310); -} - -#define ld9040_dcs_write_seq_static(ctx, seq...) \ -({\ - static const u8 d[] = { seq };\ - ld9040_dcs_write(ctx, d, ARRAY_SIZE(d));\ -}) - -static void ld9040_brightness_set(struct ld9040 *ctx) -{ - ld9040_dcs_write(ctx, ld9040_gammas[ctx->brightness], - ARRAY_SIZE(ld9040_gammas[ctx->brightness])); - - ld9040_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL, 0x02, 0x5a); -} - -static void ld9040_init(struct ld9040 *ctx) -{ - ld9040_dcs_write_seq_static(ctx, MCS_USER_SETTING, 0x5a, 0x5a); - ld9040_dcs_write_seq_static(ctx, MCS_PANEL_CONDITION, - 0x05, 0x65, 0x96, 0x71, 0x7d, 0x19, 0x3b, 0x0d, - 0x19, 0x7e, 0x0d, 0xe2, 0x00, 0x00, 0x7e, 0x7d, - 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02); - ld9040_dcs_write_seq_static(ctx, MCS_DISPCTL, - 0x02, 0x08, 0x08, 0x10, 0x10); - ld9040_dcs_write_seq_static(ctx, MCS_MANPWR, 0x04); - ld9040_dcs_write_seq_static(ctx, MCS_POWER_CTRL, - 0x0a, 0x87, 0x25, 0x6a, 0x44, 0x02, 0x88); - ld9040_dcs_write_seq_static(ctx, MCS_ELVSS_ON, 0x0d, 0x00, 0x16); - ld9040_dcs_write_seq_static(ctx, MCS_GTCON, 0x09, 0x00, 0x00); - ld9040_brightness_set(ctx); - ld9040_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE); - ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON); -} - -static int ld9040_power_on(struct ld9040 *ctx) -{ - int ret; - - ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); - if (ret < 0) - return ret; - - msleep(ctx->power_on_delay); - gpiod_set_value(ctx->reset_gpio, 0); - msleep(ctx->reset_delay); - gpiod_set_value(ctx->reset_gpio, 1); - msleep(ctx->reset_delay); - - return 0; -} - -static int ld9040_power_off(struct ld9040 *ctx) -{ - return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); -} - -static int ld9040_disable(struct drm_panel *panel) -{ - return 0; -} - -static int ld9040_unprepare(struct drm_panel *panel) -{ - struct ld9040 *ctx = panel_to_ld9040(panel); - - msleep(120); - ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF); - ld9040_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE); - msleep(40); - - ld9040_clear_error(ctx); - - return ld9040_power_off(ctx); -} - -static int ld9040_prepare(struct drm_panel *panel) -{ - struct ld9040 *ctx = panel_to_ld9040(panel); - int ret; - - ret = ld9040_power_on(ctx); - if (ret < 0) - return ret; - - ld9040_init(ctx); - - ret = ld9040_clear_error(ctx); - - if (ret < 0) - ld9040_unprepare(panel); - - return ret; -} - -static int ld9040_enable(struct drm_panel *panel) -{ - return 0; -} - -static int ld9040_get_modes(struct drm_panel *panel) -{ - struct drm_connector *connector = panel->connector; - struct ld9040 *ctx = panel_to_ld9040(panel); - struct drm_display_mode *mode; - - mode = drm_mode_create(connector->dev); - if (!mode) { - DRM_ERROR("failed to create a new display mode\n"); - return 0; - } - - drm_display_mode_from_videomode(&ctx->vm, mode); - mode->width_mm = ctx->width_mm; - mode->height_mm = ctx->height_mm; - connector->display_info.width_mm = mode->width_mm; - connector->display_info.height_mm = mode->height_mm; - - mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; - drm_mode_probed_add(connector, mode); - - return 1; -} - -static const struct drm_panel_funcs ld9040_drm_funcs = { - .disable = ld9040_disable, - .unprepare = ld9040_unprepare, - .prepare = ld9040_prepare, - .enable = ld9040_enable, - .get_modes = ld9040_get_modes, -}; - -static int ld9040_parse_dt(struct ld9040 *ctx) -{ - struct device *dev = ctx->dev; - struct device_node *np = dev->of_node; - int ret; - - ret = of_get_videomode(np, &ctx->vm, 0); - if (ret < 0) - return ret; - - of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay); - of_property_read_u32(np, "reset-delay", &ctx->reset_delay); - of_property_read_u32(np, "panel-width-mm", &ctx->width_mm); - of_property_read_u32(np, "panel-height-mm", &ctx->height_mm); - - return 0; -} - -static int ld9040_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct ld9040 *ctx; - int ret; - - ctx = devm_kzalloc(dev, sizeof(struct ld9040), GFP_KERNEL); - if (!ctx) - return -ENOMEM; - - spi_set_drvdata(spi, ctx); - - ctx->dev = dev; - ctx->brightness = ARRAY_SIZE(ld9040_gammas) - 1; - - ret = ld9040_parse_dt(ctx); - if (ret < 0) - return ret; - - ctx->supplies[0].supply = "vdd3"; - ctx->supplies[1].supply = "vci"; - ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), - ctx->supplies); - if (ret < 0) - return ret; - - ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(ctx->reset_gpio)) { - dev_err(dev, "cannot get reset-gpios %ld\n", - PTR_ERR(ctx->reset_gpio)); - return PTR_ERR(ctx->reset_gpio); - } - - spi->bits_per_word = 9; - ret = spi_setup(spi); - if (ret < 0) { - dev_err(dev, "spi setup failed.\n"); - return ret; - } - - drm_panel_init(&ctx->panel); - ctx->panel.dev = dev; - ctx->panel.funcs = &ld9040_drm_funcs; - - return drm_panel_add(&ctx->panel); -} - -static int ld9040_remove(struct spi_device *spi) -{ - struct ld9040 *ctx = spi_get_drvdata(spi); - - ld9040_power_off(ctx); - drm_panel_remove(&ctx->panel); - - return 0; -} - -static struct of_device_id ld9040_of_match[] = { - { .compatible = "samsung,ld9040" }, - { } -}; -MODULE_DEVICE_TABLE(of, ld9040_of_match); - -static struct spi_driver ld9040_driver = { - .probe = ld9040_probe, - .remove = ld9040_remove, - .driver = { - .name = "ld9040", - .owner = THIS_MODULE, - .of_match_table = ld9040_of_match, - }, -}; -module_spi_driver(ld9040_driver); - -MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>"); -MODULE_DESCRIPTION("ld9040 LCD Driver"); -MODULE_LICENSE("GPL v2"); |