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path: root/drivers/gpu/drm/omapdrm/dss/hdmi_pll.c
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Diffstat (limited to 'drivers/gpu/drm/omapdrm/dss/hdmi_pll.c')
-rw-r--r--drivers/gpu/drm/omapdrm/dss/hdmi_pll.c78
1 files changed, 15 insertions, 63 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi_pll.c b/drivers/gpu/drm/omapdrm/dss/hdmi_pll.c
index f1015e8b8267..b8bf6a9e5557 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi_pll.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi_pll.c
@@ -17,9 +17,9 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/seq_file.h>
+#include <linux/pm_runtime.h>
-#include <video/omapdss.h>
-
+#include "omapdss.h"
#include "dss.h"
#include "hdmi.h"
@@ -39,71 +39,14 @@ void hdmi_pll_dump(struct hdmi_pll_data *pll, struct seq_file *s)
DUMPPLL(PLLCTRL_CFG4);
}
-void hdmi_pll_compute(struct hdmi_pll_data *pll,
- unsigned long target_tmds, struct dss_pll_clock_info *pi)
-{
- unsigned long fint, clkdco, clkout;
- unsigned long target_bitclk, target_clkdco;
- unsigned long min_dco;
- unsigned n, m, mf, m2, sd;
- unsigned long clkin;
- const struct dss_pll_hw *hw = pll->pll.hw;
-
- clkin = clk_get_rate(pll->pll.clkin);
-
- DSSDBG("clkin %lu, target tmds %lu\n", clkin, target_tmds);
-
- target_bitclk = target_tmds * 10;
-
- /* Fint */
- n = DIV_ROUND_UP(clkin, hw->fint_max);
- fint = clkin / n;
-
- /* adjust m2 so that the clkdco will be high enough */
- min_dco = roundup(hw->clkdco_min, fint);
- m2 = DIV_ROUND_UP(min_dco, target_bitclk);
- if (m2 == 0)
- m2 = 1;
-
- target_clkdco = target_bitclk * m2;
- m = target_clkdco / fint;
-
- clkdco = fint * m;
-
- /* adjust clkdco with fractional mf */
- if (WARN_ON(target_clkdco - clkdco > fint))
- mf = 0;
- else
- mf = (u32)div_u64(262144ull * (target_clkdco - clkdco), fint);
-
- if (mf > 0)
- clkdco += (u32)div_u64((u64)mf * fint, 262144);
-
- clkout = clkdco / m2;
-
- /* sigma-delta */
- sd = DIV_ROUND_UP(fint * m, 250000000);
-
- DSSDBG("N = %u, M = %u, M.f = %u, M2 = %u, SD = %u\n",
- n, m, mf, m2, sd);
- DSSDBG("Fint %lu, clkdco %lu, clkout %lu\n", fint, clkdco, clkout);
-
- pi->n = n;
- pi->m = m;
- pi->mf = mf;
- pi->mX[0] = m2;
- pi->sd = sd;
-
- pi->fint = fint;
- pi->clkdco = clkdco;
- pi->clkout[0] = clkout;
-}
-
static int hdmi_pll_enable(struct dss_pll *dsspll)
{
struct hdmi_pll_data *pll = container_of(dsspll, struct hdmi_pll_data, pll);
struct hdmi_wp_data *wp = pll->wp;
- u16 r = 0;
+ int r;
+
+ r = pm_runtime_get_sync(&pll->pdev->dev);
+ WARN_ON(r < 0);
dss_ctrl_pll_enable(DSS_PLL_HDMI, true);
@@ -118,10 +61,14 @@ static void hdmi_pll_disable(struct dss_pll *dsspll)
{
struct hdmi_pll_data *pll = container_of(dsspll, struct hdmi_pll_data, pll);
struct hdmi_wp_data *wp = pll->wp;
+ int r;
hdmi_wp_set_pll_pwr(wp, HDMI_PLLPWRCMD_ALLOFF);
dss_ctrl_pll_enable(DSS_PLL_HDMI, false);
+
+ r = pm_runtime_put_sync(&pll->pdev->dev);
+ WARN_ON(r < 0 && r != -ENOSYS);
}
static const struct dss_pll_ops dsi_pll_ops = {
@@ -131,6 +78,8 @@ static const struct dss_pll_ops dsi_pll_ops = {
};
static const struct dss_pll_hw dss_omap4_hdmi_pll_hw = {
+ .type = DSS_PLL_TYPE_B,
+
.n_max = 255,
.m_min = 20,
.m_max = 4095,
@@ -154,6 +103,8 @@ static const struct dss_pll_hw dss_omap4_hdmi_pll_hw = {
};
static const struct dss_pll_hw dss_omap5_hdmi_pll_hw = {
+ .type = DSS_PLL_TYPE_B,
+
.n_max = 255,
.m_min = 20,
.m_max = 2045,
@@ -225,6 +176,7 @@ int hdmi_pll_init(struct platform_device *pdev, struct hdmi_pll_data *pll,
int r;
struct resource *res;
+ pll->pdev = pdev;
pll->wp = wp;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
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