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Commit 5670bd72 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

drm/omap: add PLL helper funcs 



Add two PLL helper functions:

dss_pll_find_by_src() which returns the dss_pll for the given
dss_clk_source.

dss_pll_get_clkout_idx_for_src() which returns the clkout index for the
given dss_clk_source.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent c63b1ec0

drivers/gpu/drm/omapdrm/dss/dss.h

+2 −0
Original line number Diff line number Diff line
@@ -428,6 +428,8 @@ typedef bool (*dss_hsdiv_calc_func)(int m_dispc, unsigned long dispc, 
int dss_pll_register(struct dss_pll *pll);

void dss_pll_unregister(struct dss_pll *pll);

struct dss_pll *dss_pll_find(const char *name);

struct dss_pll *dss_pll_find_by_src(enum dss_clk_source src);

unsigned dss_pll_get_clkout_idx_for_src(enum dss_clk_source src);

int dss_pll_enable(struct dss_pll *pll);

void dss_pll_disable(struct dss_pll *pll);

int dss_pll_set_config(struct dss_pll *pll,

drivers/gpu/drm/omapdrm/dss/pll.c

+53 −0
Original line number Diff line number Diff line
@@ -76,6 +76,59 @@ struct dss_pll *dss_pll_find(const char *name) 
	return NULL;

}



struct dss_pll *dss_pll_find_by_src(enum dss_clk_source src)

{

	struct dss_pll *pll;



	switch (src) {

	default:

	case DSS_CLK_SRC_FCK:

		return NULL;



	case DSS_CLK_SRC_HDMI_PLL:

		return dss_pll_find("hdmi");



	case DSS_CLK_SRC_PLL1_1:

	case DSS_CLK_SRC_PLL1_2:

	case DSS_CLK_SRC_PLL1_3:

		pll = dss_pll_find("dsi0");

		if (!pll)

			pll = dss_pll_find("video0");

		return pll;



	case DSS_CLK_SRC_PLL2_1:

	case DSS_CLK_SRC_PLL2_2:

	case DSS_CLK_SRC_PLL2_3:

		pll = dss_pll_find("dsi1");

		if (!pll)

			pll = dss_pll_find("video1");

		return pll;

	}

}



unsigned dss_pll_get_clkout_idx_for_src(enum dss_clk_source src)

{

	switch (src) {

	case DSS_CLK_SRC_HDMI_PLL:

		return 0;



	case DSS_CLK_SRC_PLL1_1:

	case DSS_CLK_SRC_PLL2_1:

		return 0;



	case DSS_CLK_SRC_PLL1_2:

	case DSS_CLK_SRC_PLL2_2:

		return 1;



	case DSS_CLK_SRC_PLL1_3:

	case DSS_CLK_SRC_PLL2_3:

		return 2;



	default:

		return 0;

	}

}



int dss_pll_enable(struct dss_pll *pll)

{

	int r;