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ipu_common: Add ldb_clk for use in parenting the pixel clock

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Add ldb_clk for use in parenting the pixel clock.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
This commit is contained in:
Eric Nelson 2012-05-31 07:24:02 +00:00 • committed by Anatolij Gustschin
parent 9fbdb1aac5
commit cf65d478ab
2 changed files with 12 additions and 3 deletions
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12
drivers/video/ipu_common.c
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@ -219,8 +219,15 @@ static struct clk ipu_clk = {
.usecount = 0, .usecount = 0,
}; };
static struct clk ldb_clk = {
.name = "ldb_clk",
.rate = 65000000,
.usecount = 0,
};
/* Globals */ /* Globals */
struct clk *g_ipu_clk; struct clk *g_ipu_clk;
struct clk *g_ldb_clk;
unsigned char g_ipu_clk_enabled; unsigned char g_ipu_clk_enabled;
struct clk *g_di_clk[2]; struct clk *g_di_clk[2];
struct clk *g_pixel_clk[2]; struct clk *g_pixel_clk[2];
@ -343,7 +350,7 @@ static int ipu_pixel_clk_set_parent(struct clk *clk, struct clk *parent)
if (parent == g_ipu_clk) if (parent == g_ipu_clk)
di_gen &= ~DI_GEN_DI_CLK_EXT; di_gen &= ~DI_GEN_DI_CLK_EXT;
else if (!IS_ERR(g_di_clk[clk->id]) && parent == g_di_clk[clk->id]) else if (!IS_ERR(g_di_clk[clk->id]) && parent == g_ldb_clk)
di_gen |= DI_GEN_DI_CLK_EXT; di_gen |= DI_GEN_DI_CLK_EXT;
else else
return -EINVAL; return -EINVAL;
@ -429,7 +436,8 @@ int ipu_probe(void)
g_ipu_clk = &ipu_clk; g_ipu_clk = &ipu_clk;
debug("ipu_clk = %u\n", clk_get_rate(g_ipu_clk)); debug("ipu_clk = %u\n", clk_get_rate(g_ipu_clk));
g_ldb_clk = &ldb_clk;
debug("ldb_clk = %u\n", clk_get_rate(g_ldb_clk));
ipu_reset(); ipu_reset();
clk_set_parent(g_pixel_clk[0], g_ipu_clk); clk_set_parent(g_pixel_clk[0], g_ipu_clk);

3
drivers/video/ipu_disp.c
View file

@ -64,6 +64,7 @@ static int dmfc_size_28, dmfc_size_29, dmfc_size_24, dmfc_size_27, dmfc_size_23;
int g_di1_tvout; int g_di1_tvout;
extern struct clk *g_ipu_clk; extern struct clk *g_ipu_clk;
extern struct clk *g_ldb_clk;
extern struct clk *g_di_clk[2]; extern struct clk *g_di_clk[2];
extern struct clk *g_pixel_clk[2]; extern struct clk *g_pixel_clk[2];
@ -941,7 +942,7 @@ int32_t ipu_init_sync_panel(int disp, uint32_t pixel_clk,
udelay(10000); udelay(10000);
} }
} }
clk_set_parent(g_pixel_clk[disp], g_di_clk[disp]); clk_set_parent(g_pixel_clk[disp], g_ldb_clk);
} else { } else {
if (clk_get_usecount(g_pixel_clk[disp]) != 0) if (clk_get_usecount(g_pixel_clk[disp]) != 0)
clk_set_parent(g_pixel_clk[disp], g_ipu_clk); clk_set_parent(g_pixel_clk[disp], g_ipu_clk);