#define DSS_SUBSYS_NAME "DPI"
#include <linux/kernel.h>
-#include <linux/clk.h>
#include <linux/delay.h>
+#include <linux/export.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
-#include <plat/display.h>
+#include <video/omapdss.h>
#include <plat/cpu.h>
#include "dss.h"
static struct {
struct regulator *vdds_dsi_reg;
+ struct platform_device *dsidev;
} dpi;
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
-static int dpi_set_dsi_clk(struct omap_dss_device *dssdev, bool is_tft,
+static struct platform_device *dpi_get_dsidev(enum omap_dss_clk_source clk)
+{
+ int dsi_module;
+
+ dsi_module = clk == OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC ? 0 : 1;
+
+ return dsi_get_dsidev_from_id(dsi_module);
+}
+
+static bool dpi_use_dsi_pll(struct omap_dss_device *dssdev)
+{
+ if (dssdev->clocks.dispc.dispc_fclk_src ==
+ OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC ||
+ dssdev->clocks.dispc.dispc_fclk_src ==
+ OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC ||
+ dssdev->clocks.dispc.channel.lcd_clk_src ==
+ OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC ||
+ dssdev->clocks.dispc.channel.lcd_clk_src ==
+ OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC)
+ return true;
+ else
+ return false;
+}
+
+static int dpi_set_dsi_clk(struct omap_dss_device *dssdev,
unsigned long pck_req, unsigned long *fck, int *lck_div,
int *pck_div)
{
struct dispc_clock_info dispc_cinfo;
int r;
- r = dsi_pll_calc_clock_div_pck(is_tft, pck_req, &dsi_cinfo,
+ r = dsi_pll_calc_clock_div_pck(dpi.dsidev, pck_req, &dsi_cinfo,
&dispc_cinfo);
if (r)
return r;
- r = dsi_pll_set_clock_div(&dsi_cinfo);
+ r = dsi_pll_set_clock_div(dpi.dsidev, &dsi_cinfo);
if (r)
return r;
- dss_select_dispc_clk_source(DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC);
+ dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
- r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
- if (r)
+ r = dispc_mgr_set_clock_div(dssdev->manager->id, &dispc_cinfo);
+ if (r) {
+ dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
return r;
+ }
- *fck = dsi_cinfo.dsi1_pll_fclk;
+ *fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk;
*lck_div = dispc_cinfo.lck_div;
*pck_div = dispc_cinfo.pck_div;
return 0;
}
-#else
-static int dpi_set_dispc_clk(struct omap_dss_device *dssdev, bool is_tft,
+
+static int dpi_set_dispc_clk(struct omap_dss_device *dssdev,
unsigned long pck_req, unsigned long *fck, int *lck_div,
int *pck_div)
{
struct dispc_clock_info dispc_cinfo;
int r;
- r = dss_calc_clock_div(is_tft, pck_req, &dss_cinfo, &dispc_cinfo);
+ r = dss_calc_clock_div(pck_req, &dss_cinfo, &dispc_cinfo);
if (r)
return r;
if (r)
return r;
- r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
+ r = dispc_mgr_set_clock_div(dssdev->manager->id, &dispc_cinfo);
if (r)
return r;
return 0;
}
-#endif
static int dpi_set_mode(struct omap_dss_device *dssdev)
{
struct omap_video_timings *t = &dssdev->panel.timings;
- int lck_div, pck_div;
- unsigned long fck;
+ int lck_div = 0, pck_div = 0;
+ unsigned long fck = 0;
unsigned long pck;
- bool is_tft;
int r = 0;
- dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
-
- dispc_set_pol_freq(dssdev->manager->id, dssdev->panel.config,
- dssdev->panel.acbi, dssdev->panel.acb);
+ dispc_mgr_set_pol_freq(dssdev->manager->id, dssdev->panel.config);
- is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
-
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
- r = dpi_set_dsi_clk(dssdev, is_tft, t->pixel_clock * 1000, &fck,
- &lck_div, &pck_div);
-#else
- r = dpi_set_dispc_clk(dssdev, is_tft, t->pixel_clock * 1000, &fck,
- &lck_div, &pck_div);
-#endif
+ if (dpi_use_dsi_pll(dssdev))
+ r = dpi_set_dsi_clk(dssdev, t->pixel_clock * 1000, &fck,
+ &lck_div, &pck_div);
+ else
+ r = dpi_set_dispc_clk(dssdev, t->pixel_clock * 1000, &fck,
+ &lck_div, &pck_div);
if (r)
- goto err0;
+ return r;
pck = fck / lck_div / pck_div / 1000;
t->pixel_clock = pck;
}
- dispc_set_lcd_timings(dssdev->manager->id, t);
+ dss_mgr_set_timings(dssdev->manager, t);
-err0:
- dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
- return r;
+ return 0;
}
-static int dpi_basic_init(struct omap_dss_device *dssdev)
+static void dpi_basic_init(struct omap_dss_device *dssdev)
{
- bool is_tft;
+ dispc_mgr_set_io_pad_mode(DSS_IO_PAD_MODE_BYPASS);
+ dispc_mgr_enable_stallmode(dssdev->manager->id, false);
- is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
+ dispc_mgr_set_lcd_type_tft(dssdev->manager->id);
- dispc_set_parallel_interface_mode(dssdev->manager->id,
- OMAP_DSS_PARALLELMODE_BYPASS);
- dispc_set_lcd_display_type(dssdev->manager->id, is_tft ?
- OMAP_DSS_LCD_DISPLAY_TFT : OMAP_DSS_LCD_DISPLAY_STN);
- dispc_set_tft_data_lines(dssdev->manager->id,
+ dispc_mgr_set_tft_data_lines(dssdev->manager->id,
dssdev->phy.dpi.data_lines);
-
- return 0;
}
int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
{
int r;
+ if (cpu_is_omap34xx() && !dpi.vdds_dsi_reg) {
+ DSSERR("no VDSS_DSI regulator\n");
+ return -ENODEV;
+ }
+
+ if (dssdev->manager == NULL) {
+ DSSERR("failed to enable display: no manager\n");
+ return -ENODEV;
+ }
+
r = omap_dss_start_device(dssdev);
if (r) {
DSSERR("failed to start device\n");
- goto err0;
+ goto err_start_dev;
}
if (cpu_is_omap34xx()) {
r = regulator_enable(dpi.vdds_dsi_reg);
if (r)
- goto err1;
+ goto err_reg_enable;
}
- dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
-
- r = dpi_basic_init(dssdev);
+ r = dispc_runtime_get();
if (r)
- goto err2;
+ goto err_get_dispc;
+
+ dpi_basic_init(dssdev);
+
+ if (dpi_use_dsi_pll(dssdev)) {
+ r = dsi_runtime_get(dpi.dsidev);
+ if (r)
+ goto err_get_dsi;
+
+ r = dsi_pll_init(dpi.dsidev, 0, 1);
+ if (r)
+ goto err_dsi_pll_init;
+ }
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
- dss_clk_enable(DSS_CLK_SYSCK);
- r = dsi_pll_init(dssdev, 0, 1);
- if (r)
- goto err3;
-#endif
r = dpi_set_mode(dssdev);
if (r)
- goto err4;
+ goto err_set_mode;
mdelay(2);
- dssdev->manager->enable(dssdev->manager);
+ r = dss_mgr_enable(dssdev->manager);
+ if (r)
+ goto err_mgr_enable;
return 0;
-err4:
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
- dsi_pll_uninit();
-err3:
- dss_clk_disable(DSS_CLK_SYSCK);
-#endif
-err2:
- dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
+err_mgr_enable:
+err_set_mode:
+ if (dpi_use_dsi_pll(dssdev))
+ dsi_pll_uninit(dpi.dsidev, true);
+err_dsi_pll_init:
+ if (dpi_use_dsi_pll(dssdev))
+ dsi_runtime_put(dpi.dsidev);
+err_get_dsi:
+ dispc_runtime_put();
+err_get_dispc:
if (cpu_is_omap34xx())
regulator_disable(dpi.vdds_dsi_reg);
-err1:
+err_reg_enable:
omap_dss_stop_device(dssdev);
-err0:
+err_start_dev:
return r;
}
EXPORT_SYMBOL(omapdss_dpi_display_enable);
void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
{
- dssdev->manager->disable(dssdev->manager);
+ dss_mgr_disable(dssdev->manager);
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
- dss_select_dispc_clk_source(DSS_CLK_SRC_FCK);
- dsi_pll_uninit();
- dss_clk_disable(DSS_CLK_SYSCK);
-#endif
+ if (dpi_use_dsi_pll(dssdev)) {
+ dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
+ dsi_pll_uninit(dpi.dsidev, true);
+ dsi_runtime_put(dpi.dsidev);
+ }
- dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
+ dispc_runtime_put();
if (cpu_is_omap34xx())
regulator_disable(dpi.vdds_dsi_reg);
void dpi_set_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
+ int r;
+
DSSDBG("dpi_set_timings\n");
dssdev->panel.timings = *timings;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
+ r = dispc_runtime_get();
+ if (r)
+ return;
+
dpi_set_mode(dssdev);
- dispc_go(dssdev->manager->id);
+
+ dispc_runtime_put();
+ } else {
+ dss_mgr_set_timings(dssdev->manager, timings);
}
}
EXPORT_SYMBOL(dpi_set_timings);
int dpi_check_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
- bool is_tft;
int r;
int lck_div, pck_div;
unsigned long fck;
unsigned long pck;
+ struct dispc_clock_info dispc_cinfo;
- if (!dispc_lcd_timings_ok(timings))
+ if (dss_mgr_check_timings(dssdev->manager, timings))
return -EINVAL;
if (timings->pixel_clock == 0)
return -EINVAL;
- is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
-
-#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
- {
+ if (dpi_use_dsi_pll(dssdev)) {
struct dsi_clock_info dsi_cinfo;
- struct dispc_clock_info dispc_cinfo;
- r = dsi_pll_calc_clock_div_pck(is_tft,
+ r = dsi_pll_calc_clock_div_pck(dpi.dsidev,
timings->pixel_clock * 1000,
&dsi_cinfo, &dispc_cinfo);
if (r)
return r;
- fck = dsi_cinfo.dsi1_pll_fclk;
- lck_div = dispc_cinfo.lck_div;
- pck_div = dispc_cinfo.pck_div;
- }
-#else
- {
+ fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk;
+ } else {
struct dss_clock_info dss_cinfo;
- struct dispc_clock_info dispc_cinfo;
- r = dss_calc_clock_div(is_tft, timings->pixel_clock * 1000,
+ r = dss_calc_clock_div(timings->pixel_clock * 1000,
&dss_cinfo, &dispc_cinfo);
if (r)
return r;
fck = dss_cinfo.fck;
- lck_div = dispc_cinfo.lck_div;
- pck_div = dispc_cinfo.pck_div;
}
-#endif
+
+ lck_div = dispc_cinfo.lck_div;
+ pck_div = dispc_cinfo.pck_div;
pck = fck / lck_div / pck_div / 1000;
}
EXPORT_SYMBOL(dpi_check_timings);
-int dpi_init_display(struct omap_dss_device *dssdev)
+static int __init dpi_init_display(struct omap_dss_device *dssdev)
{
DSSDBG("init_display\n");
dpi.vdds_dsi_reg = vdds_dsi;
}
+ if (dpi_use_dsi_pll(dssdev)) {
+ enum omap_dss_clk_source dispc_fclk_src =
+ dssdev->clocks.dispc.dispc_fclk_src;
+ dpi.dsidev = dpi_get_dsidev(dispc_fclk_src);
+ }
+
+ return 0;
+}
+
+static void __init dpi_probe_pdata(struct platform_device *pdev)
+{
+ struct omap_dss_board_info *pdata = pdev->dev.platform_data;
+ int i, r;
+
+ for (i = 0; i < pdata->num_devices; ++i) {
+ struct omap_dss_device *dssdev = pdata->devices[i];
+
+ if (dssdev->type != OMAP_DISPLAY_TYPE_DPI)
+ continue;
+
+ r = dpi_init_display(dssdev);
+ if (r) {
+ DSSERR("device %s init failed: %d\n", dssdev->name, r);
+ continue;
+ }
+
+ r = omap_dss_register_device(dssdev, &pdev->dev, i);
+ if (r)
+ DSSERR("device %s register failed: %d\n",
+ dssdev->name, r);
+ }
+}
+
+static int __init omap_dpi_probe(struct platform_device *pdev)
+{
+ dpi_probe_pdata(pdev);
+
return 0;
}
-int dpi_init(struct platform_device *pdev)
+static int __exit omap_dpi_remove(struct platform_device *pdev)
{
+ omap_dss_unregister_child_devices(&pdev->dev);
+
return 0;
}
-void dpi_exit(void)
+static struct platform_driver omap_dpi_driver = {
+ .remove = __exit_p(omap_dpi_remove),
+ .driver = {
+ .name = "omapdss_dpi",
+ .owner = THIS_MODULE,
+ },
+};
+
+int __init dpi_init_platform_driver(void)
{
+ return platform_driver_probe(&omap_dpi_driver, omap_dpi_probe);
}
+void __exit dpi_uninit_platform_driver(void)
+{
+ platform_driver_unregister(&omap_dpi_driver);
+}