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path: root/drivers/gpu/drm/msm/dp/dp_parser.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_parser.c')
-rw-r--r--drivers/gpu/drm/msm/dp/dp_parser.c293
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;
-}