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ARM: OMAP4: display: convert display to use syscon for dsi muxing

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The legacy control module APIs will be gone, thus convert the display
driver to use syscon. This change should eventually be moved to
display driver from the board directory.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tero Kristo 2015-02-19 12:42:59 +02:00
parent 7415b0b4c6
commit 23d34981c7
1 changed files with 13 additions and 2 deletions
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15
arch/arm/mach-omap2/display.c
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@ -26,6 +26,8 @@
#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 "omap_hwmod.h"
@ -104,6 +106,10 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initconst = {
{ "dss_hdmi", "omapdss_hdmi", -1 },
};
#define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
static struct regmap *omap4_dsi_mux_syscon;
static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
{
u32 enable_mask, enable_shift;
@ -124,7 +130,7 @@ 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);
regmap_read(omap4_dsi_mux_syscon, OMAP4_DSIPHY_SYSCON_OFFSET, &reg);
reg &= ~enable_mask;
reg &= ~pipd_mask;
@ -132,7 +138,7 @@ 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);
regmap_write(omap4_dsi_mux_syscon, OMAP4_DSIPHY_SYSCON_OFFSET, reg);
return 0;
}
@ -665,5 +671,10 @@ int __init omapdss_init_of(void)
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);
return 0;
}