diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_parser.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_parser.c | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c deleted file mode 100644 index 0519dd3ac3c3..000000000000 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ /dev/null @@ -1,293 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. - */ - -#include <linux/of_gpio.h> -#include <linux/phy/phy.h> - -#include <drm/drm_print.h> - -#include "dp_parser.h" -#include "dp_reg.h" - -static const struct dp_regulator_cfg sdm845_dp_reg_cfg = { - .num = 2, - .regs = { - {"vdda-1p2", 21800, 4 }, /* 1.2 V */ - {"vdda-0p9", 36000, 32 }, /* 0.9 V */ - }, -}; - -static int msm_dss_ioremap(struct platform_device *pdev, - struct dss_io_data *io_data) -{ - struct resource *res = NULL; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - DRM_ERROR("%pS->%s: msm_dss_get_res failed\n", - __builtin_return_address(0), __func__); - return -ENODEV; - } - - io_data->len = (u32)resource_size(res); - io_data->base = ioremap(res->start, io_data->len); - if (!io_data->base) { - DRM_ERROR("%pS->%s: ioremap failed\n", - __builtin_return_address(0), __func__); - return -EIO; - } - - return 0; -} - -static void msm_dss_iounmap(struct dss_io_data *io_data) -{ - if (io_data->base) { - iounmap(io_data->base); - io_data->base = NULL; - } - io_data->len = 0; -} - -static void dp_parser_unmap_io_resources(struct dp_parser *parser) -{ - struct dp_io *io = &parser->io; - - msm_dss_iounmap(&io->dp_controller); -} - -static int dp_parser_ctrl_res(struct dp_parser *parser) -{ - int rc = 0; - struct platform_device *pdev = parser->pdev; - struct dp_io *io = &parser->io; - - rc = msm_dss_ioremap(pdev, &io->dp_controller); - if (rc) { - DRM_ERROR("unable to remap dp io resources, rc=%d\n", rc); - goto err; - } - - io->phy = devm_phy_get(&pdev->dev, "dp"); - if (IS_ERR(io->phy)) { - rc = PTR_ERR(io->phy); - goto err; - } - - return 0; -err: - dp_parser_unmap_io_resources(parser); - return rc; -} - -static int dp_parser_misc(struct dp_parser *parser) -{ - struct device_node *of_node = parser->pdev->dev.of_node; - int len = 0; - const char *data_lane_property = "data-lanes"; - - len = of_property_count_elems_of_size(of_node, - data_lane_property, sizeof(u32)); - if (len < 0) { - DRM_WARN("Invalid property %s, default max DP lanes = %d\n", - data_lane_property, DP_MAX_NUM_DP_LANES); - len = DP_MAX_NUM_DP_LANES; - } - - parser->max_dp_lanes = len; - return 0; -} - -static inline bool dp_parser_check_prefix(const char *clk_prefix, - const char *clk_name) -{ - return !strncmp(clk_prefix, clk_name, strlen(clk_prefix)); -} - -static int dp_parser_init_clk_data(struct dp_parser *parser) -{ - int num_clk, i, rc; - int core_clk_count = 0, ctrl_clk_count = 0, stream_clk_count = 0; - const char *clk_name; - struct device *dev = &parser->pdev->dev; - struct dss_module_power *core_power = &parser->mp[DP_CORE_PM]; - struct dss_module_power *ctrl_power = &parser->mp[DP_CTRL_PM]; - struct dss_module_power *stream_power = &parser->mp[DP_STREAM_PM]; - - num_clk = of_property_count_strings(dev->of_node, "clock-names"); - if (num_clk <= 0) { - DRM_ERROR("no clocks are defined\n"); - return -EINVAL; - } - - for (i = 0; i < num_clk; i++) { - rc = of_property_read_string_index(dev->of_node, - "clock-names", i, &clk_name); - if (rc < 0) - return rc; - - if (dp_parser_check_prefix("core", clk_name)) - core_clk_count++; - - if (dp_parser_check_prefix("ctrl", clk_name)) - ctrl_clk_count++; - - if (dp_parser_check_prefix("stream", clk_name)) - stream_clk_count++; - } - - /* Initialize the CORE power module */ - if (core_clk_count == 0) { - DRM_ERROR("no core clocks are defined\n"); - return -EINVAL; - } - - core_power->num_clk = core_clk_count; - core_power->clk_config = devm_kzalloc(dev, - sizeof(struct dss_clk) * core_power->num_clk, - GFP_KERNEL); - if (!core_power->clk_config) - return -EINVAL; - - /* Initialize the CTRL power module */ - if (ctrl_clk_count == 0) { - DRM_ERROR("no ctrl clocks are defined\n"); - return -EINVAL; - } - - ctrl_power->num_clk = ctrl_clk_count; - ctrl_power->clk_config = devm_kzalloc(dev, - sizeof(struct dss_clk) * ctrl_power->num_clk, - GFP_KERNEL); - if (!ctrl_power->clk_config) { - ctrl_power->num_clk = 0; - return -EINVAL; - } - - /* Initialize the STREAM power module */ - if (stream_clk_count == 0) { - DRM_ERROR("no stream (pixel) clocks are defined\n"); - return -EINVAL; - } - - stream_power->num_clk = stream_clk_count; - stream_power->clk_config = devm_kzalloc(dev, - sizeof(struct dss_clk) * stream_power->num_clk, - GFP_KERNEL); - if (!stream_power->clk_config) { - stream_power->num_clk = 0; - return -EINVAL; - } - - return 0; -} - -static int dp_parser_clock(struct dp_parser *parser) -{ - int rc = 0, i = 0; - int num_clk = 0; - int core_clk_index = 0, ctrl_clk_index = 0, stream_clk_index = 0; - int core_clk_count = 0, ctrl_clk_count = 0, stream_clk_count = 0; - const char *clk_name; - struct device *dev = &parser->pdev->dev; - struct dss_module_power *core_power = &parser->mp[DP_CORE_PM]; - struct dss_module_power *ctrl_power = &parser->mp[DP_CTRL_PM]; - struct dss_module_power *stream_power = &parser->mp[DP_STREAM_PM]; - - rc = dp_parser_init_clk_data(parser); - if (rc) { - DRM_ERROR("failed to initialize power data %d\n", rc); - return -EINVAL; - } - - core_clk_count = core_power->num_clk; - ctrl_clk_count = ctrl_power->num_clk; - stream_clk_count = stream_power->num_clk; - - num_clk = core_clk_count + ctrl_clk_count + stream_clk_count; - - for (i = 0; i < num_clk; i++) { - rc = of_property_read_string_index(dev->of_node, "clock-names", - i, &clk_name); - if (rc) { - DRM_ERROR("error reading clock-names %d\n", rc); - return rc; - } - if (dp_parser_check_prefix("core", clk_name) && - core_clk_index < core_clk_count) { - struct dss_clk *clk = - &core_power->clk_config[core_clk_index]; - strlcpy(clk->clk_name, clk_name, sizeof(clk->clk_name)); - clk->type = DSS_CLK_AHB; - core_clk_index++; - } else if (dp_parser_check_prefix("stream", clk_name) && - stream_clk_index < stream_clk_count) { - struct dss_clk *clk = - &stream_power->clk_config[stream_clk_index]; - strlcpy(clk->clk_name, clk_name, sizeof(clk->clk_name)); - clk->type = DSS_CLK_PCLK; - stream_clk_index++; - } else if (dp_parser_check_prefix("ctrl", clk_name) && - ctrl_clk_index < ctrl_clk_count) { - struct dss_clk *clk = - &ctrl_power->clk_config[ctrl_clk_index]; - strlcpy(clk->clk_name, clk_name, sizeof(clk->clk_name)); - ctrl_clk_index++; - if (dp_parser_check_prefix("ctrl_link", clk_name) || - dp_parser_check_prefix("stream_pixel", clk_name)) - clk->type = DSS_CLK_PCLK; - else - clk->type = DSS_CLK_AHB; - } - } - - DRM_DEBUG_DP("clock parsing successful\n"); - - return 0; -} - -static int dp_parser_parse(struct dp_parser *parser) -{ - int rc = 0; - - if (!parser) { - DRM_ERROR("invalid input\n"); - return -EINVAL; - } - - rc = dp_parser_ctrl_res(parser); - if (rc) - return rc; - - rc = dp_parser_misc(parser); - if (rc) - return rc; - - rc = dp_parser_clock(parser); - if (rc) - return rc; - - /* Map the corresponding regulator information according to - * version. Currently, since we only have one supported platform, - * mapping the regulator directly. - */ - parser->regulator_cfg = &sdm845_dp_reg_cfg; - - return 0; -} - -struct dp_parser *dp_parser_get(struct platform_device *pdev) -{ - struct dp_parser *parser; - - parser = devm_kzalloc(&pdev->dev, sizeof(*parser), GFP_KERNEL); - if (!parser) - return ERR_PTR(-ENOMEM); - - parser->parse = dp_parser_parse; - parser->pdev = pdev; - - return parser; -} |
