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path: root/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
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Diffstat (limited to 'drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c')
-rw-r--r--drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c106
1 files changed, 53 insertions, 53 deletions
diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
index b4c7af3ab6ae..e80debdc4176 100644
--- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
+++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
@@ -1,28 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* DesignWare MIPI DSI Host Controller v1.02 driver
*
* Copyright (c) 2016 Linaro Limited.
- * Copyright (c) 2014-2016 Hisilicon Limited.
+ * Copyright (c) 2014-2016 HiSilicon Limited.
*
* Author:
* Xinliang Liu <z.liuxinliang@hisilicon.com>
* Xinliang Liu <xinliang.liu@linaro.org>
* Xinwei Kong <kong.kongxinwei@hisilicon.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 <linux/clk.h>
#include <linux/component.h>
+#include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
-#include <drm/drm_of.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_encoder_slave.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_device.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
#include "dw_dsi_reg.h"
@@ -79,7 +82,7 @@ struct dsi_hw_ctx {
struct dw_dsi {
struct drm_encoder encoder;
- struct drm_bridge *bridge;
+ struct device *dev;
struct mipi_dsi_host host;
struct drm_display_mode cur_mode;
struct dsi_hw_ctx *ctx;
@@ -154,8 +157,8 @@ static u32 dsi_calc_phy_rate(u32 req_kHz, struct mipi_phy_params *phy)
q_pll = 0x10 >> (7 - phy->hstx_ckg_sel);
temp = f_kHz * (u64)q_pll * (u64)ref_clk_ps;
- m_n_int = temp / (u64)1000000000;
- m_n = (temp % (u64)1000000000) / (u64)100000000;
+ m_n_int = div64_u64_rem(temp, 1000000000, &temp);
+ m_n = div_u64(temp, 100000000);
if (m_n_int % 2 == 0) {
if (m_n * 6 >= 50) {
@@ -226,9 +229,8 @@ static u32 dsi_calc_phy_rate(u32 req_kHz, struct mipi_phy_params *phy)
phy->pll_fbd_div5f = 1;
}
- f_kHz = (u64)1000000000 * (u64)m_pll /
- ((u64)ref_clk_ps * (u64)n_pll * (u64)q_pll);
-
+ f_kHz = div64_u64((u64)1000000000 * (u64)m_pll,
+ (u64)ref_clk_ps * (u64)n_pll * (u64)q_pll);
if (f_kHz >= req_kHz)
break;
@@ -487,7 +489,7 @@ static void dsi_set_mode_timing(void __iomem *base,
hsa_time = (hsw * lane_byte_clk_kHz) / pixel_clk_kHz;
hbp_time = (hbp * lane_byte_clk_kHz) / pixel_clk_kHz;
tmp = (u64)htot * (u64)lane_byte_clk_kHz;
- hline_time = DIV_ROUND_UP(tmp, pixel_clk_kHz);
+ hline_time = DIV_ROUND_UP_ULL(tmp, pixel_clk_kHz);
/* all specified in byte-lane clocks */
writel(hsa_time, base + VID_HSA_TIME);
@@ -655,7 +657,7 @@ static enum drm_mode_status dsi_encoder_mode_valid(struct drm_encoder *encoder,
* reset adj_mode to the mode value each time,
* so we don't adjust the mode twice
*/
- drm_mode_copy(&adj_mode, mode);
+ drm_mode_init(&adj_mode, mode);
crtc_funcs = crtc->helper_private;
if (crtc_funcs && crtc_funcs->mode_fixup)
@@ -694,10 +696,6 @@ static const struct drm_encoder_helper_funcs dw_encoder_helper_funcs = {
.disable = dsi_encoder_disable
};
-static const struct drm_encoder_funcs dw_encoder_funcs = {
- .destroy = drm_encoder_cleanup,
-};
-
static int dw_drm_encoder_init(struct device *dev,
struct drm_device *drm_dev,
struct drm_encoder *encoder)
@@ -711,8 +709,7 @@ static int dw_drm_encoder_init(struct device *dev,
}
encoder->possible_crtcs = crtc_mask;
- ret = drm_encoder_init(drm_dev, encoder, &dw_encoder_funcs,
- DRM_MODE_ENCODER_DSI, NULL);
+ ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI);
if (ret) {
DRM_ERROR("failed to init dsi encoder\n");
return ret;
@@ -723,10 +720,13 @@ static int dw_drm_encoder_init(struct device *dev,
return 0;
}
+static const struct component_ops dsi_ops;
static int dsi_host_attach(struct mipi_dsi_host *host,
struct mipi_dsi_device *mdsi)
{
struct dw_dsi *dsi = host_to_dsi(host);
+ struct device *dev = host->dev;
+ int ret;
if (mdsi->lanes < 1 || mdsi->lanes > 4) {
DRM_ERROR("dsi device params invalid\n");
@@ -737,13 +737,20 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
dsi->format = mdsi->format;
dsi->mode_flags = mdsi->mode_flags;
+ ret = component_add(dev, &dsi_ops);
+ if (ret)
+ return ret;
+
return 0;
}
static int dsi_host_detach(struct mipi_dsi_host *host,
struct mipi_dsi_device *mdsi)
{
- /* do nothing */
+ struct device *dev = host->dev;
+
+ component_del(dev, &dsi_ops);
+
return 0;
}
@@ -771,17 +778,20 @@ static int dsi_host_init(struct device *dev, struct dw_dsi *dsi)
static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi)
{
struct drm_encoder *encoder = &dsi->encoder;
- struct drm_bridge *bridge = dsi->bridge;
+ struct drm_bridge *bridge;
+ struct device_node *np = dsi->dev->of_node;
int ret;
- /* associate the bridge to dsi encoder */
- ret = drm_bridge_attach(encoder, bridge, NULL);
- if (ret) {
- DRM_ERROR("failed to attach external bridge\n");
+ /*
+ * Get the endpoint node. In our case, dsi has one output port1
+ * to which the external HDMI bridge is connected.
+ */
+ ret = drm_of_find_panel_or_bridge(np, 1, 0, NULL, &bridge);
+ if (ret)
return ret;
- }
- return 0;
+ /* associate the bridge to dsi encoder */
+ return drm_bridge_attach(encoder, bridge, NULL, 0);
}
static int dsi_bind(struct device *dev, struct device *master, void *data)
@@ -795,10 +805,6 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
if (ret)
return ret;
- ret = dsi_host_init(dev, dsi);
- if (ret)
- return ret;
-
ret = dsi_bridge_init(drm_dev, dsi);
if (ret)
return ret;
@@ -819,17 +825,6 @@ static const struct component_ops dsi_ops = {
static int dsi_parse_dt(struct platform_device *pdev, struct dw_dsi *dsi)
{
struct dsi_hw_ctx *ctx = dsi->ctx;
- struct device_node *np = pdev->dev.of_node;
- struct resource *res;
- int ret;
-
- /*
- * Get the endpoint node. In our case, dsi has one output port1
- * to which the external HDMI bridge is connected.
- */
- ret = drm_of_find_panel_or_bridge(np, 1, 0, NULL, &dsi->bridge);
- if (ret)
- return ret;
ctx->pclk = devm_clk_get(&pdev->dev, "pclk");
if (IS_ERR(ctx->pclk)) {
@@ -837,8 +832,7 @@ static int dsi_parse_dt(struct platform_device *pdev, struct dw_dsi *dsi)
return PTR_ERR(ctx->pclk);
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- ctx->base = devm_ioremap_resource(&pdev->dev, res);
+ ctx->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ctx->base)) {
DRM_ERROR("failed to remap dsi io region\n");
return PTR_ERR(ctx->base);
@@ -862,6 +856,7 @@ static int dsi_probe(struct platform_device *pdev)
dsi = &data->dsi;
ctx = &data->ctx;
dsi->ctx = ctx;
+ dsi->dev = &pdev->dev;
ret = dsi_parse_dt(pdev, dsi);
if (ret)
@@ -869,14 +864,19 @@ static int dsi_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
- return component_add(&pdev->dev, &dsi_ops);
+ ret = dsi_host_init(&pdev->dev, dsi);
+ if (ret)
+ return ret;
+
+ return 0;
}
-static int dsi_remove(struct platform_device *pdev)
+static void dsi_remove(struct platform_device *pdev)
{
- component_del(&pdev->dev, &dsi_ops);
+ struct dsi_data *data = platform_get_drvdata(pdev);
+ struct dw_dsi *dsi = &data->dsi;
- return 0;
+ mipi_dsi_host_unregister(&dsi->host);
}
static const struct of_device_id dsi_of_match[] = {
generated by cgit (git 2.34.1) at 2025-12-26 03:27:08 +0000