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Diffstat (limited to 'arch/arm/mach-omap2/display.c')
-rw-r--r--arch/arm/mach-omap2/display.c368
1 files changed, 108 insertions, 260 deletions
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index ff37be1f6f93..dbec3bb9fbf4 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -1,18 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* OMAP2plus display device setup / initialization.
*
- * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
* Senthilvadivu Guruswamy
* Sumit Semwal
- *
- * 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.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/string.h>
@@ -23,16 +15,19 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/slab.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
-#include <video/omapdss.h>
+#include <linux/platform_data/omapdss.h>
#include "omap_hwmod.h"
#include "omap_device.h"
-#include "omap-pm.h"
#include "common.h"
#include "soc.h"
#include "iomap.h"
-#include "mux.h"
#include "control.h"
#include "display.h"
#include "prm.h"
@@ -42,8 +37,6 @@
#define DISPC_CONTROL3 0x0848
#define DISPC_IRQSTATUS 0x0018
-#define DSS_SYSCONFIG 0x10
-#define DSS_SYSSTATUS 0x14
#define DSS_CONTROL 0x40
#define DSS_SDI_CONTROL 0x44
#define DSS_PLL_CONTROL 0x48
@@ -64,6 +57,7 @@
*/
#define FRAMEDONE_IRQ_TIMEOUT 100
+#if defined(CONFIG_FB_OMAP2)
static struct platform_device omap_display_device = {
.name = "omapdss",
.id = -1,
@@ -72,70 +66,16 @@ static struct platform_device omap_display_device = {
},
};
-struct omap_dss_hwmod_data {
- const char *oh_name;
- const char *dev_name;
- const int id;
-};
-
-static const struct omap_dss_hwmod_data omap2_dss_hwmod_data[] __initconst = {
- { "dss_core", "omapdss_dss", -1 },
- { "dss_dispc", "omapdss_dispc", -1 },
- { "dss_rfbi", "omapdss_rfbi", -1 },
- { "dss_venc", "omapdss_venc", -1 },
-};
-
-static const struct omap_dss_hwmod_data omap3_dss_hwmod_data[] __initconst = {
- { "dss_core", "omapdss_dss", -1 },
- { "dss_dispc", "omapdss_dispc", -1 },
- { "dss_rfbi", "omapdss_rfbi", -1 },
- { "dss_venc", "omapdss_venc", -1 },
- { "dss_dsi1", "omapdss_dsi", 0 },
-};
-
-static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initconst = {
- { "dss_core", "omapdss_dss", -1 },
- { "dss_dispc", "omapdss_dispc", -1 },
- { "dss_rfbi", "omapdss_rfbi", -1 },
- { "dss_dsi1", "omapdss_dsi", 0 },
- { "dss_dsi2", "omapdss_dsi", 1 },
- { "dss_hdmi", "omapdss_hdmi", -1 },
-};
+#define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
-static void __init omap4_tpd12s015_mux_pads(void)
-{
- omap_mux_init_signal("hdmi_cec",
- OMAP_PIN_INPUT_PULLUP);
- omap_mux_init_signal("hdmi_ddc_scl",
- OMAP_PIN_INPUT_PULLUP);
- omap_mux_init_signal("hdmi_ddc_sda",
- OMAP_PIN_INPUT_PULLUP);
-}
-
-static void __init omap4_hdmi_mux_pads(enum omap_hdmi_flags flags)
-{
- u32 reg;
- u16 control_i2c_1;
-
- /*
- * CONTROL_I2C_1: HDMI_DDC_SDA_PULLUPRESX (bit 28) and
- * HDMI_DDC_SCL_PULLUPRESX (bit 24) are set to disable
- * internal pull up resistor.
- */
- if (flags & OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP) {
- control_i2c_1 = OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_I2C_1;
- reg = omap4_ctrl_pad_readl(control_i2c_1);
- reg |= (OMAP4_HDMI_DDC_SDA_PULLUPRESX_MASK |
- OMAP4_HDMI_DDC_SCL_PULLUPRESX_MASK);
- omap4_ctrl_pad_writel(reg, control_i2c_1);
- }
-}
+static struct regmap *omap4_dsi_mux_syscon;
static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
{
u32 enable_mask, enable_shift;
u32 pipd_mask, pipd_shift;
u32 reg;
+ int ret;
if (dsi_id == 0) {
enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
@@ -151,7 +91,11 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
return -ENODEV;
}
- reg = omap4_ctrl_pad_readl(OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
+ ret = regmap_read(omap4_dsi_mux_syscon,
+ OMAP4_DSIPHY_SYSCON_OFFSET,
+ &reg);
+ if (ret)
+ return ret;
reg &= ~enable_mask;
reg &= ~pipd_mask;
@@ -159,17 +103,7 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
reg |= (lanes << enable_shift) & enable_mask;
reg |= (lanes << pipd_shift) & pipd_mask;
- omap4_ctrl_pad_writel(reg, OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
-
- return 0;
-}
-
-int __init omap_hdmi_init(enum omap_hdmi_flags flags)
-{
- if (cpu_is_omap44xx()) {
- omap4_hdmi_mux_pads(flags);
- omap4_tpd12s015_mux_pads();
- }
+ regmap_write(omap4_dsi_mux_syscon, OMAP4_DSIPHY_SYSCON_OFFSET, reg);
return 0;
}
@@ -188,109 +122,6 @@ static void omap_dsi_disable_pads(int dsi_id, unsigned lane_mask)
omap4_dsi_mux_pads(dsi_id, 0);
}
-static int omap_dss_set_min_bus_tput(struct device *dev, unsigned long tput)
-{
- return omap_pm_set_min_bus_tput(dev, OCP_INITIATOR_AGENT, tput);
-}
-
-static struct platform_device *create_dss_pdev(const char *pdev_name,
- int pdev_id, const char *oh_name, void *pdata, int pdata_len,
- struct platform_device *parent)
-{
- struct platform_device *pdev;
- struct omap_device *od;
- struct omap_hwmod *ohs[1];
- struct omap_hwmod *oh;
- int r;
-
- oh = omap_hwmod_lookup(oh_name);
- if (!oh) {
- pr_err("Could not look up %s\n", oh_name);
- r = -ENODEV;
- goto err;
- }
-
- pdev = platform_device_alloc(pdev_name, pdev_id);
- if (!pdev) {
- pr_err("Could not create pdev for %s\n", pdev_name);
- r = -ENOMEM;
- goto err;
- }
-
- if (parent != NULL)
- pdev->dev.parent = &parent->dev;
-
- if (pdev->id != -1)
- dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
- else
- dev_set_name(&pdev->dev, "%s", pdev->name);
-
- ohs[0] = oh;
- od = omap_device_alloc(pdev, ohs, 1);
- if (IS_ERR(od)) {
- pr_err("Could not alloc omap_device for %s\n", pdev_name);
- r = -ENOMEM;
- goto err;
- }
-
- r = platform_device_add_data(pdev, pdata, pdata_len);
- if (r) {
- pr_err("Could not set pdata for %s\n", pdev_name);
- goto err;
- }
-
- r = omap_device_register(pdev);
- if (r) {
- pr_err("Could not register omap_device for %s\n", pdev_name);
- goto err;
- }
-
- return pdev;
-
-err:
- return ERR_PTR(r);
-}
-
-static struct platform_device *create_simple_dss_pdev(const char *pdev_name,
- int pdev_id, void *pdata, int pdata_len,
- struct platform_device *parent)
-{
- struct platform_device *pdev;
- int r;
-
- pdev = platform_device_alloc(pdev_name, pdev_id);
- if (!pdev) {
- pr_err("Could not create pdev for %s\n", pdev_name);
- r = -ENOMEM;
- goto err;
- }
-
- if (parent != NULL)
- pdev->dev.parent = &parent->dev;
-
- if (pdev->id != -1)
- dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
- else
- dev_set_name(&pdev->dev, "%s", pdev->name);
-
- r = platform_device_add_data(pdev, pdata, pdata_len);
- if (r) {
- pr_err("Could not set pdata for %s\n", pdev_name);
- goto err;
- }
-
- r = platform_device_add(pdev);
- if (r) {
- pr_err("Could not register platform_device for %s\n", pdev_name);
- goto err;
- }
-
- return pdev;
-
-err:
- return ERR_PTR(r);
-}
-
static enum omapdss_version __init omap_display_get_version(void)
{
if (cpu_is_omap24xx())
@@ -316,35 +147,30 @@ static enum omapdss_version __init omap_display_get_version(void)
return OMAPDSS_VER_OMAP4;
else if (soc_is_omap54xx())
return OMAPDSS_VER_OMAP5;
+ else if (soc_is_am43xx())
+ return OMAPDSS_VER_AM43xx;
+ else if (soc_is_dra7xx())
+ return OMAPDSS_VER_DRA7xx;
else
return OMAPDSS_VER_UNKNOWN;
}
-int __init omap_display_init(struct omap_dss_board_info *board_data)
+static int __init omapdss_init_fbdev(void)
{
- int r = 0;
- struct platform_device *pdev;
- int i, oh_count;
- const struct omap_dss_hwmod_data *curr_dss_hwmod;
- struct platform_device *dss_pdev;
- enum omapdss_version ver;
-
- /* create omapdss device */
-
- ver = omap_display_get_version();
+ static struct omap_dss_board_info board_data = {
+ .dsi_enable_pads = omap_dsi_enable_pads,
+ .dsi_disable_pads = omap_dsi_disable_pads,
+ };
+ struct device_node *node;
+ int r;
- if (ver == OMAPDSS_VER_UNKNOWN) {
+ board_data.version = omap_display_get_version();
+ if (board_data.version == OMAPDSS_VER_UNKNOWN) {
pr_err("DSS not supported on this SoC\n");
return -ENODEV;
}
- board_data->version = ver;
- board_data->dsi_enable_pads = omap_dsi_enable_pads;
- board_data->dsi_disable_pads = omap_dsi_disable_pads;
- board_data->get_context_loss_count = omap_pm_get_dev_context_loss_count;
- board_data->set_min_bus_tput = omap_dss_set_min_bus_tput;
-
- omap_display_device.dev.platform_data = board_data;
+ omap_display_device.dev.platform_data = &board_data;
r = platform_device_register(&omap_display_device);
if (r < 0) {
@@ -352,72 +178,96 @@ int __init omap_display_init(struct omap_dss_board_info *board_data)
return r;
}
- /* create devices for dss hwmods */
+ /* create vrfb device */
+ r = omap_init_vrfb();
+ if (r < 0) {
+ pr_err("Unable to register omapvrfb device\n");
+ return r;
+ }
- if (cpu_is_omap24xx()) {
- curr_dss_hwmod = omap2_dss_hwmod_data;
- oh_count = ARRAY_SIZE(omap2_dss_hwmod_data);
- } else if (cpu_is_omap34xx()) {
- curr_dss_hwmod = omap3_dss_hwmod_data;
- oh_count = ARRAY_SIZE(omap3_dss_hwmod_data);
- } else {
- curr_dss_hwmod = omap4_dss_hwmod_data;
- oh_count = ARRAY_SIZE(omap4_dss_hwmod_data);
+ /* create FB device */
+ r = omap_init_fb();
+ if (r < 0) {
+ pr_err("Unable to register omapfb device\n");
+ return r;
}
- /*
- * First create the pdev for dss_core, which is used as a parent device
- * by the other dss pdevs. Note: dss_core has to be the first item in
- * the hwmod list.
- */
- dss_pdev = create_dss_pdev(curr_dss_hwmod[0].dev_name,
- curr_dss_hwmod[0].id,
- curr_dss_hwmod[0].oh_name,
- board_data, sizeof(*board_data),
- NULL);
+ /* create V4L2 display device */
+ r = omap_init_vout();
+ if (r < 0) {
+ pr_err("Unable to register omap_vout device\n");
+ return r;
+ }
+
+ /* add DSI info for omap4 */
+ node = of_find_node_by_name(NULL, "omap4_padconf_global");
+ if (node)
+ omap4_dsi_mux_syscon = syscon_node_to_regmap(node);
+ of_node_put(node);
- if (IS_ERR(dss_pdev)) {
- pr_err("Could not build omap_device for %s\n",
- curr_dss_hwmod[0].oh_name);
+ return 0;
+}
+
+static const char * const omapdss_compat_names[] __initconst = {
+ "ti,omap2-dss",
+ "ti,omap3-dss",
+ "ti,omap4-dss",
+ "ti,omap5-dss",
+ "ti,dra7-dss",
+};
+
+static struct device_node * __init omapdss_find_dss_of_node(void)
+{
+ struct device_node *node;
+ int i;
- return PTR_ERR(dss_pdev);
+ for (i = 0; i < ARRAY_SIZE(omapdss_compat_names); ++i) {
+ node = of_find_compatible_node(NULL, NULL,
+ omapdss_compat_names[i]);
+ if (node)
+ return node;
}
- for (i = 1; i < oh_count; i++) {
- pdev = create_dss_pdev(curr_dss_hwmod[i].dev_name,
- curr_dss_hwmod[i].id,
- curr_dss_hwmod[i].oh_name,
- board_data, sizeof(*board_data),
- dss_pdev);
+ return NULL;
+}
- if (IS_ERR(pdev)) {
- pr_err("Could not build omap_device for %s\n",
- curr_dss_hwmod[i].oh_name);
+static int __init omapdss_init_of(void)
+{
+ int r;
+ struct device_node *node;
+ struct platform_device *pdev;
- return PTR_ERR(pdev);
- }
+ /* only create dss helper devices if dss is enabled in the .dts */
+
+ node = omapdss_find_dss_of_node();
+ if (!node)
+ return 0;
+
+ if (!of_device_is_available(node)) {
+ of_node_put(node);
+ return 0;
}
- /* Create devices for DPI and SDI */
+ pdev = of_find_device_by_node(node);
- pdev = create_simple_dss_pdev("omapdss_dpi", -1,
- board_data, sizeof(*board_data), dss_pdev);
- if (IS_ERR(pdev)) {
- pr_err("Could not build platform_device for omapdss_dpi\n");
- return PTR_ERR(pdev);
+ if (!pdev) {
+ pr_err("Unable to find DSS platform device\n");
+ of_node_put(node);
+ return -ENODEV;
}
- if (cpu_is_omap34xx()) {
- pdev = create_simple_dss_pdev("omapdss_sdi", -1,
- board_data, sizeof(*board_data), dss_pdev);
- if (IS_ERR(pdev)) {
- pr_err("Could not build platform_device for omapdss_sdi\n");
- return PTR_ERR(pdev);
- }
+ r = of_platform_populate(node, NULL, NULL, &pdev->dev);
+ put_device(&pdev->dev);
+ of_node_put(node);
+ if (r) {
+ pr_err("Unable to populate DSS submodule devices\n");
+ return r;
}
- return 0;
+ return omapdss_init_fbdev();
}
+omap_device_initcall(omapdss_init_of);
+#endif /* CONFIG_FB_OMAP2 */
static void dispc_disable_outputs(void)
{
@@ -530,8 +380,7 @@ int omap_dss_reset(struct omap_hwmod *oh)
}
for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
- if (oc->_clk)
- clk_prepare_enable(oc->_clk);
+ clk_prepare_enable(oc->_clk);
dispc_disable_outputs();
@@ -552,13 +401,12 @@ int omap_dss_reset(struct omap_hwmod *oh)
MAX_MODULE_SOFTRESET_WAIT, c);
if (c == MAX_MODULE_SOFTRESET_WAIT)
- pr_warning("dss_core: waiting for reset to finish failed\n");
+ pr_warn("dss_core: waiting for reset to finish failed\n");
else
pr_debug("dss_core: softreset done\n");
for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++)
- if (oc->_clk)
- clk_disable_unprepare(oc->_clk);
+ clk_disable_unprepare(oc->_clk);
r = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
generated by cgit (git 2.34.1) at 2025-12-25 03:52:41 +0000