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Commit 034fbcc3 authored by Rob Clark's avatar Rob Clark
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drm/msm: hdmi phy 8960 phy pll 

On downstream kernel the clk driver directly bangs hdmi phy registers.
For upstream kernel, we need to model this as a clock and register with
the clock framework.
Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
parent 89301471
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Showing with 376 additions and 1 deletion
drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c
View file @ 034fbcc3
......@@ -15,13 +15,370 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include "hdmi.h"
struct hdmi_phy_8960 {
struct hdmi_phy base;
struct hdmi *hdmi;
struct clk_hw pll_hw;
struct clk *pll;
unsigned long pixclk;
};
#define to_hdmi_phy_8960(x) container_of(x, struct hdmi_phy_8960, base)
#define clk_to_phy(x) container_of(x, struct hdmi_phy_8960, pll_hw)
/*
* HDMI PLL:
*
* To get the parent clock setup properly, we need to plug in hdmi pll
* configuration into common-clock-framework.
*/
struct pll_rate {
unsigned long rate;
struct {
uint32_t val;
uint32_t reg;
} conf[32];
};
/* NOTE: keep sorted highest freq to lowest: */
static const struct pll_rate freqtbl[] = {
/* 1080p60/1080p50 case */
{ 148500000, {
{ 0x02, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
{ 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
{ 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
{ 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
{ 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
{ 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
{ 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
{ 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
{ 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
{ 0, 0 } }
},
{ 108000000, {
{ 0x08, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x21, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x1c, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0, 0 } }
},
/* 720p60/720p50/1080i60/1080i50/1080p24/1080p30/1080p25 */
{ 74250000, {
{ 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
{ 0x12, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0, 0 } }
},
{ 65000000, {
{ 0x18, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x8a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x0b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x4b, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0x09, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0, 0 } }
},
/* 480p60/480i60 */
{ 27030000, {
{ 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
{ 0x38, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
{ 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0xff, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x4e, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0xd7, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0x03, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
{ 0, 0 } }
},
/* 576p50/576i50 */
{ 27000000, {
{ 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
{ 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
{ 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
{ 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
{ 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
{ 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
{ 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
{ 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
{ 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
{ 0, 0 } }
},
/* 640x480p60 */
{ 25200000, {
{ 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
{ 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
{ 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
{ 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
{ 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
{ 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
{ 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
{ 0x77, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
{ 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
{ 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
{ 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
{ 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
{ 0x20, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
{ 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
{ 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
{ 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
{ 0xf4, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
{ 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
{ 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
{ 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
{ 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
{ 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
{ 0, 0 } }
},
};
static int hdmi_pll_enable(struct clk_hw *hw)
{
struct hdmi_phy_8960 *phy_8960 = clk_to_phy(hw);
struct hdmi *hdmi = phy_8960->hdmi;
int timeout_count, pll_lock_retry = 10;
unsigned int val;
DBG("");
/* Assert PLL S/W reset */
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x8d);
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0, 0x10);
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1, 0x1a);
/* Wait for a short time before de-asserting
* to allow the hardware to complete its job.
* This much of delay should be fine for hardware
* to assert and de-assert.
*/
udelay(10);
/* De-assert PLL S/W reset */
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x0d);
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_REG12);
val |= HDMI_8960_PHY_REG12_SW_RESET;
/* Assert PHY S/W reset */
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG12, val);
val &= ~HDMI_8960_PHY_REG12_SW_RESET;
/* Wait for a short time before de-asserting
to allow the hardware to complete its job.
This much of delay should be fine for hardware
to assert and de-assert. */
udelay(10);
/* De-assert PHY S/W reset */
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG12, val);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG2, 0x3f);
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_REG12);
val |= HDMI_8960_PHY_REG12_PWRDN_B;
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG12, val);
/* Wait 10 us for enabling global power for PHY */
mb();
udelay(10);
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_PLL_PWRDN_B);
val |= HDMI_8960_PHY_PLL_PWRDN_B_PLL_PWRDN_B;
val &= ~HDMI_8960_PHY_PLL_PWRDN_B_PD_PLL;
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_PWRDN_B, val);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG2, 0x80);
timeout_count = 1000;
while (--pll_lock_retry > 0) {
/* are we there yet? */
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_PLL_STATUS0);
if (val & HDMI_8960_PHY_PLL_STATUS0_PLL_LOCK)
break;
udelay(1);
if (--timeout_count > 0)
continue;
/*
* PLL has still not locked.
* Do a software reset and try again
* Assert PLL S/W reset first
*/
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x8d);
udelay(10);
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x0d);
/*
* Wait for a short duration for the PLL calibration
* before checking if the PLL gets locked
*/
udelay(350);
timeout_count = 1000;
}
return 0;
}
static void hdmi_pll_disable(struct clk_hw *hw)
{
struct hdmi_phy_8960 *phy_8960 = clk_to_phy(hw);
struct hdmi *hdmi = phy_8960->hdmi;
unsigned int val;
DBG("");
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_REG12);
val &= ~HDMI_8960_PHY_REG12_PWRDN_B;
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG12, val);
val = hdmi_read(hdmi, REG_HDMI_8960_PHY_PLL_PWRDN_B);
val |= HDMI_8960_PHY_REG12_SW_RESET;
val &= ~HDMI_8960_PHY_REG12_PWRDN_B;
hdmi_write(hdmi, REG_HDMI_8960_PHY_PLL_PWRDN_B, val);
/* Make sure HDMI PHY/PLL are powered down */
mb();
}
static const struct pll_rate *find_rate(unsigned long rate)
{
int i;
for (i = 1; i < ARRAY_SIZE(freqtbl); i++)
if (rate > freqtbl[i].rate)
return &freqtbl[i-1];
return &freqtbl[i-1];
}
static unsigned long hdmi_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct hdmi_phy_8960 *phy_8960 = clk_to_phy(hw);
return phy_8960->pixclk;
}
static long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
const struct pll_rate *pll_rate = find_rate(rate);
return pll_rate->rate;
}
static int hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct hdmi_phy_8960 *phy_8960 = clk_to_phy(hw);
struct hdmi *hdmi = phy_8960->hdmi;
const struct pll_rate *pll_rate = find_rate(rate);
int i;
DBG("rate=%lu", rate);
for (i = 0; pll_rate->conf[i].reg; i++)
hdmi_write(hdmi, pll_rate->conf[i].reg, pll_rate->conf[i].val);
phy_8960->pixclk = rate;
return 0;
}
static const struct clk_ops hdmi_pll_ops = {
.enable = hdmi_pll_enable,
.disable = hdmi_pll_disable,
.recalc_rate = hdmi_pll_recalc_rate,
.round_rate = hdmi_pll_round_rate,
.set_rate = hdmi_pll_set_rate,
};
static const char *hdmi_pll_parents[] = {
"pxo",
};
static struct clk_init_data pll_init = {
.name = "hdmi_pll",
.ops = &hdmi_pll_ops,
.parent_names = hdmi_pll_parents,
.num_parents = ARRAY_SIZE(hdmi_pll_parents),
};
/*
* HDMI Phy:
*/
static void hdmi_phy_8960_destroy(struct hdmi_phy *phy)
{
......@@ -86,6 +443,9 @@ static void hdmi_phy_8960_powerup(struct hdmi_phy *phy,
struct hdmi_phy_8960 *phy_8960 = to_hdmi_phy_8960(phy);
struct hdmi *hdmi = phy_8960->hdmi;
DBG("pixclock: %lu", pixclock);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG2, 0x00);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG0, 0x1b);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG1, 0xf2);
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG4, 0x00);
......@@ -104,6 +464,8 @@ static void hdmi_phy_8960_powerdown(struct hdmi_phy *phy)
struct hdmi_phy_8960 *phy_8960 = to_hdmi_phy_8960(phy);
struct hdmi *hdmi = phy_8960->hdmi;
DBG("");
hdmi_write(hdmi, REG_HDMI_8960_PHY_REG2, 0x7f);
}
......@@ -118,7 +480,12 @@ struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi)
{
struct hdmi_phy_8960 *phy_8960;
struct hdmi_phy *phy = NULL;
int ret;
int ret, i;
/* sanity check: */
for (i = 0; i < (ARRAY_SIZE(freqtbl) - 1); i++)
if (WARN_ON(freqtbl[i].rate < freqtbl[i+1].rate))
return ERR_PTR(-EINVAL);
phy_8960 = kzalloc(sizeof(*phy_8960), GFP_KERNEL);
if (!phy_8960) {
......@@ -132,6 +499,14 @@ struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi)
phy_8960->hdmi = hdmi;
phy_8960->pll_hw.init = &pll_init;
phy_8960->pll = devm_clk_register(hdmi->dev->dev, &phy_8960->pll_hw);
if (IS_ERR(phy_8960->pll)) {
ret = PTR_ERR(phy_8960->pll);
phy_8960->pll = NULL;
goto fail;
}
return phy;
fail:
......
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