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OMAPDSS: DSI: dsi_runtime_get/put in pll_init

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When DPI uses the DSI PLL for pixel clock, the DPI code will call
dsi_runtime_get/put to keep the DSI block enabled. A much simpler way to
handle this is to do dsi_runtime_get/put in DSI's dsi_pll_init() and
dsi_pll_uninit(), thus removing the need for DSI to call the runtime PM
functions.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2014-08-08 10:04:31 +03:00
parent dbb26e53e5
commit f76b178a78
3 changed files with 9 additions and 28 deletions
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17
drivers/video/fbdev/omap2/dss/dpi.c
View File

@ -402,10 +402,6 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
goto err_src_sel;
if (dpi->dsidev) {
r = dsi_runtime_get(dpi->dsidev);
if (r)
goto err_get_dsi;
r = dsi_pll_init(dpi->dsidev);
if (r)
goto err_dsi_pll_init;
@ -432,9 +428,6 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
if (dpi->dsidev)
dsi_pll_uninit(dpi->dsidev, true);
err_dsi_pll_init:
if (dpi->dsidev)
dsi_runtime_put(dpi->dsidev);
err_get_dsi:
err_src_sel:
dispc_runtime_put();
err_get_dispc:
@ -459,7 +452,6 @@ static void dpi_display_disable(struct omap_dss_device *dssdev)
if (dpi->dsidev) {
dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK);
dsi_pll_uninit(dpi->dsidev, true);
dsi_runtime_put(dpi->dsidev);
}
dispc_runtime_put();
@ -554,18 +546,11 @@ static int dpi_verify_dsi_pll(struct platform_device *dsidev)
/* do initial setup with the PLL to see if it is operational */
r = dsi_runtime_get(dsidev);
r = dsi_pll_init(dsidev);
if (r)
return r;
r = dsi_pll_init(dsidev);
if (r) {
dsi_runtime_put(dsidev);
return r;
}
dsi_pll_uninit(dsidev, true);
dsi_runtime_put(dsidev);
return 0;
}

10
drivers/video/fbdev/omap2/dss/dsi.c
View File

@ -1144,7 +1144,7 @@ static u32 dsi_get_errors(struct platform_device *dsidev)
return e;
}
int dsi_runtime_get(struct platform_device *dsidev)
static int dsi_runtime_get(struct platform_device *dsidev)
{
int r;
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
@ -1156,7 +1156,7 @@ int dsi_runtime_get(struct platform_device *dsidev)
return r < 0 ? r : 0;
}
void dsi_runtime_put(struct platform_device *dsidev)
static void dsi_runtime_put(struct platform_device *dsidev)
{
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
int r;
@ -1674,6 +1674,10 @@ int dsi_pll_init(struct platform_device *dsidev)
if (r)
return r;
r = dsi_runtime_get(dsidev);
if (r)
return r;
dsi_enable_pll_clock(dsidev, 1);
/*
* Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
@ -1717,6 +1721,7 @@ int dsi_pll_init(struct platform_device *dsidev)
err0:
dsi_disable_scp_clk(dsidev);
dsi_enable_pll_clock(dsidev, 0);
dsi_runtime_put(dsidev);
return r;
}
@ -1733,6 +1738,7 @@ void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes)
dsi_disable_scp_clk(dsidev);
dsi_enable_pll_clock(dsidev, 0);
dsi_runtime_put(dsidev);
DSSDBG("PLL uninit done\n");
}

10
drivers/video/fbdev/omap2/dss/dss.h
View File

@ -268,9 +268,6 @@ struct file_operations;
int dsi_init_platform_driver(void) __init;
void dsi_uninit_platform_driver(void) __exit;
int dsi_runtime_get(struct platform_device *dsidev);
void dsi_runtime_put(struct platform_device *dsidev);
void dsi_dump_clocks(struct seq_file *s);
void dsi_irq_handler(void);
@ -291,13 +288,6 @@ int dsi_pll_init(struct platform_device *dsidev);
void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes);
struct platform_device *dsi_get_dsidev_from_id(int module);
#else
static inline int dsi_runtime_get(struct platform_device *dsidev)
{
return 0;
}
static inline void dsi_runtime_put(struct platform_device *dsidev)
{
}
static inline u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
{
WARN("%s: DSI not compiled in, returning pixel_size as 0\n", __func__);