diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/rgb.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/rgb.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c deleted file mode 100644 index ed4416f20260..000000000000 --- a/drivers/gpu/drm/tegra/rgb.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * Copyright (C) 2012 Avionic Design GmbH - * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. - * - * 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 <linux/clk.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> - -#include "drm.h" -#include "dc.h" - -struct tegra_rgb { - struct tegra_output output; - struct clk *clk_parent; - struct clk *clk; -}; - -static inline struct tegra_rgb *to_rgb(struct tegra_output *output) -{ - return container_of(output, struct tegra_rgb, output); -} - -struct reg_entry { - unsigned long offset; - unsigned long value; -}; - -static const struct reg_entry rgb_enable[] = { - { DC_COM_PIN_OUTPUT_ENABLE(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_ENABLE(1), 0x00000000 }, - { DC_COM_PIN_OUTPUT_ENABLE(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_ENABLE(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(1), 0x01000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_DATA(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_DATA(1), 0x00000000 }, - { DC_COM_PIN_OUTPUT_DATA(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_DATA(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(1), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(4), 0x00210222 }, - { DC_COM_PIN_OUTPUT_SELECT(5), 0x00002200 }, - { DC_COM_PIN_OUTPUT_SELECT(6), 0x00020000 }, -}; - -static const struct reg_entry rgb_disable[] = { - { DC_COM_PIN_OUTPUT_SELECT(6), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(5), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(4), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(1), 0x00000000 }, - { DC_COM_PIN_OUTPUT_SELECT(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_DATA(3), 0xaaaaaaaa }, - { DC_COM_PIN_OUTPUT_DATA(2), 0xaaaaaaaa }, - { DC_COM_PIN_OUTPUT_DATA(1), 0xaaaaaaaa }, - { DC_COM_PIN_OUTPUT_DATA(0), 0xaaaaaaaa }, - { DC_COM_PIN_OUTPUT_POLARITY(3), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(2), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(1), 0x00000000 }, - { DC_COM_PIN_OUTPUT_POLARITY(0), 0x00000000 }, - { DC_COM_PIN_OUTPUT_ENABLE(3), 0x55555555 }, - { DC_COM_PIN_OUTPUT_ENABLE(2), 0x55555555 }, - { DC_COM_PIN_OUTPUT_ENABLE(1), 0x55150005 }, - { DC_COM_PIN_OUTPUT_ENABLE(0), 0x55555555 }, -}; - -static void tegra_dc_write_regs(struct tegra_dc *dc, - const struct reg_entry *table, - unsigned int num) -{ - unsigned int i; - - for (i = 0; i < num; i++) - tegra_dc_writel(dc, table[i].value, table[i].offset); -} - -static int tegra_output_rgb_enable(struct tegra_output *output) -{ - struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc); - - tegra_dc_write_regs(dc, rgb_enable, ARRAY_SIZE(rgb_enable)); - - return 0; -} - -static int tegra_output_rgb_disable(struct tegra_output *output) -{ - struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc); - - tegra_dc_write_regs(dc, rgb_disable, ARRAY_SIZE(rgb_disable)); - - return 0; -} - -static int tegra_output_rgb_setup_clock(struct tegra_output *output, - struct clk *clk, unsigned long pclk) -{ - struct tegra_rgb *rgb = to_rgb(output); - - return clk_set_parent(clk, rgb->clk_parent); -} - -static int tegra_output_rgb_check_mode(struct tegra_output *output, - struct drm_display_mode *mode, - enum drm_mode_status *status) -{ - /* - * FIXME: For now, always assume that the mode is okay. There are - * unresolved issues with clk_round_rate(), which doesn't always - * reliably report whether a frequency can be set or not. - */ - - *status = MODE_OK; - - return 0; -} - -static const struct tegra_output_ops rgb_ops = { - .enable = tegra_output_rgb_enable, - .disable = tegra_output_rgb_disable, - .setup_clock = tegra_output_rgb_setup_clock, - .check_mode = tegra_output_rgb_check_mode, -}; - -int tegra_dc_rgb_probe(struct tegra_dc *dc) -{ - struct device_node *np; - struct tegra_rgb *rgb; - int err; - - np = of_get_child_by_name(dc->dev->of_node, "rgb"); - if (!np || !of_device_is_available(np)) - return -ENODEV; - - rgb = devm_kzalloc(dc->dev, sizeof(*rgb), GFP_KERNEL); - if (!rgb) - return -ENOMEM; - - rgb->clk = devm_clk_get(dc->dev, NULL); - if (IS_ERR(rgb->clk)) { - dev_err(dc->dev, "failed to get clock\n"); - return PTR_ERR(rgb->clk); - } - - rgb->clk_parent = devm_clk_get(dc->dev, "parent"); - if (IS_ERR(rgb->clk_parent)) { - dev_err(dc->dev, "failed to get parent clock\n"); - return PTR_ERR(rgb->clk_parent); - } - - err = clk_set_parent(rgb->clk, rgb->clk_parent); - if (err < 0) { - dev_err(dc->dev, "failed to set parent clock: %d\n", err); - return err; - } - - rgb->output.dev = dc->dev; - rgb->output.of_node = np; - - err = tegra_output_parse_dt(&rgb->output); - if (err < 0) - return err; - - dc->rgb = &rgb->output; - - return 0; -} - -int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc) -{ - struct tegra_rgb *rgb = to_rgb(dc->rgb); - int err; - - if (!dc->rgb) - return -ENODEV; - - rgb->output.type = TEGRA_OUTPUT_RGB; - rgb->output.ops = &rgb_ops; - - err = tegra_output_init(dc->base.dev, &rgb->output); - if (err < 0) { - dev_err(dc->dev, "output setup failed: %d\n", err); - return err; - } - - /* - * By default, outputs can be associated with each display controller. - * RGB outputs are an exception, so we make sure they can be attached - * to only their parent display controller. - */ - rgb->output.encoder.possible_crtcs = 1 << dc->pipe; - - return 0; -} - -int tegra_dc_rgb_exit(struct tegra_dc *dc) -{ - if (dc->rgb) { - int err; - - err = tegra_output_disable(dc->rgb); - if (err < 0) { - dev_err(dc->dev, "output failed to disable: %d\n", err); - return err; - } - - err = tegra_output_exit(dc->rgb); - if (err < 0) { - dev_err(dc->dev, "output cleanup failed: %d\n", err); - return err; - } - - dc->rgb = NULL; - } - - return 0; -} |