@@ -36,40 +36,22 @@
*/
#define VCO_REF_CLK_RATE 19200000
-
-struct dsi_pll_regs {
- u32 pll_prop_gain_rate;
- u32 pll_lockdet_rate;
- u32 decimal_div_start;
- u32 frac_div_start_low;
- u32 frac_div_start_mid;
- u32 frac_div_start_high;
- u32 pll_clock_inverters;
- u32 ssc_stepsize_low;
- u32 ssc_stepsize_high;
- u32 ssc_div_per_low;
- u32 ssc_div_per_high;
- u32 ssc_adjper_low;
- u32 ssc_adjper_high;
- u32 ssc_control;
-};
+#define FRAC_BITS 18
struct dsi_pll_config {
- u32 ref_freq;
- bool div_override;
- u32 output_div;
- bool ignore_frac;
- bool disable_prescaler;
bool enable_ssc;
bool ssc_center;
- u32 dec_bits;
- u32 frac_bits;
- u32 lock_timer;
u32 ssc_freq;
u32 ssc_offset;
u32 ssc_adj_per;
- u32 thresh_cycles;
- u32 refclk_cycles;
+
+ /* out */
+ u32 pll_prop_gain_rate;
+ u32 decimal_div_start;
+ u32 frac_div_start;
+ u32 pll_clock_inverters;
+ u32 ssc_stepsize;
+ u32 ssc_div_per;
};
struct pll_10nm_cached_state {
@@ -85,15 +67,11 @@ struct dsi_pll_10nm {
struct msm_dsi_phy *phy;
- u64 vco_ref_clk_rate;
u64 vco_current_rate;
/* protects REG_DSI_10nm_PHY_CMN_CLK_CFG0 register */
spinlock_t postdiv_lock;
- struct dsi_pll_config pll_configuration;
- struct dsi_pll_regs reg_setup;
-
struct pll_10nm_cached_state cached_state;
struct dsi_pll_10nm *slave;
@@ -107,34 +85,19 @@ struct dsi_pll_10nm {
*/
static struct dsi_pll_10nm *pll_10nm_list[DSI_MAX];
-static void dsi_pll_setup_config(struct dsi_pll_10nm *pll)
+static void dsi_pll_setup_config(struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
-
- config->ref_freq = pll->vco_ref_clk_rate;
- config->output_div = 1;
- config->dec_bits = 8;
- config->frac_bits = 18;
- config->lock_timer = 64;
config->ssc_freq = 31500;
config->ssc_offset = 5000;
config->ssc_adj_per = 2;
- config->thresh_cycles = 32;
- config->refclk_cycles = 256;
-
- config->div_override = false;
- config->ignore_frac = false;
- config->disable_prescaler = false;
config->enable_ssc = false;
- config->ssc_center = 0;
+ config->ssc_center = false;
}
-static void dsi_pll_calc_dec_frac(struct dsi_pll_10nm *pll)
+static void dsi_pll_calc_dec_frac(struct dsi_pll_10nm *pll, struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
- struct dsi_pll_regs *regs = &pll->reg_setup;
- u64 fref = pll->vco_ref_clk_rate;
+ u64 fref = VCO_REF_CLK_RATE;
u64 pll_freq;
u64 divider;
u64 dec, dec_multiple;
@@ -143,40 +106,32 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_10nm *pll)
pll_freq = pll->vco_current_rate;
- if (config->disable_prescaler)
- divider = fref;
- else
- divider = fref * 2;
+ divider = fref * 2;
- multiplier = 1 << config->frac_bits;
+ multiplier = 1 << FRAC_BITS;
dec_multiple = div_u64(pll_freq * multiplier, divider);
dec = div_u64_rem(dec_multiple, multiplier, &frac);
if (pll_freq <= 1900000000UL)
- regs->pll_prop_gain_rate = 8;
+ config->pll_prop_gain_rate = 8;
else if (pll_freq <= 3000000000UL)
- regs->pll_prop_gain_rate = 10;
+ config->pll_prop_gain_rate = 10;
else
- regs->pll_prop_gain_rate = 12;
+ config->pll_prop_gain_rate = 12;
if (pll_freq < 1100000000UL)
- regs->pll_clock_inverters = 8;
+ config->pll_clock_inverters = 8;
else
- regs->pll_clock_inverters = 0;
+ config->pll_clock_inverters = 0;
- regs->pll_lockdet_rate = config->lock_timer;
- regs->decimal_div_start = dec;
- regs->frac_div_start_low = (frac & 0xff);
- regs->frac_div_start_mid = (frac & 0xff00) >> 8;
- regs->frac_div_start_high = (frac & 0x30000) >> 16;
+ config->decimal_div_start = dec;
+ config->frac_div_start = frac;
}
#define SSC_CENTER BIT(0)
#define SSC_EN BIT(1)
-static void dsi_pll_calc_ssc(struct dsi_pll_10nm *pll)
+static void dsi_pll_calc_ssc(struct dsi_pll_10nm *pll, struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
- struct dsi_pll_regs *regs = &pll->reg_setup;
u32 ssc_per;
u32 ssc_mod;
u64 ssc_step_size;
@@ -187,58 +142,49 @@ static void dsi_pll_calc_ssc(struct dsi_pll_10nm *pll)
return;
}
- ssc_per = DIV_ROUND_CLOSEST(config->ref_freq, config->ssc_freq) / 2 - 1;
+ ssc_per = DIV_ROUND_CLOSEST(VCO_REF_CLK_RATE, config->ssc_freq) / 2 - 1;
ssc_mod = (ssc_per + 1) % (config->ssc_adj_per + 1);
ssc_per -= ssc_mod;
- frac = regs->frac_div_start_low |
- (regs->frac_div_start_mid << 8) |
- (regs->frac_div_start_high << 16);
- ssc_step_size = regs->decimal_div_start;
- ssc_step_size *= (1 << config->frac_bits);
+ frac = config->frac_div_start;
+ ssc_step_size = config->decimal_div_start;
+ ssc_step_size *= (1 << FRAC_BITS);
ssc_step_size += frac;
ssc_step_size *= config->ssc_offset;
ssc_step_size *= (config->ssc_adj_per + 1);
ssc_step_size = div_u64(ssc_step_size, (ssc_per + 1));
ssc_step_size = DIV_ROUND_CLOSEST_ULL(ssc_step_size, 1000000);
- regs->ssc_div_per_low = ssc_per & 0xFF;
- regs->ssc_div_per_high = (ssc_per & 0xFF00) >> 8;
- regs->ssc_stepsize_low = (u32)(ssc_step_size & 0xFF);
- regs->ssc_stepsize_high = (u32)((ssc_step_size & 0xFF00) >> 8);
- regs->ssc_adjper_low = config->ssc_adj_per & 0xFF;
- regs->ssc_adjper_high = (config->ssc_adj_per & 0xFF00) >> 8;
-
- regs->ssc_control = config->ssc_center ? SSC_CENTER : 0;
+ config->ssc_div_per = ssc_per;
+ config->ssc_stepsize = ssc_step_size;
pr_debug("SCC: Dec:%d, frac:%llu, frac_bits:%d\n",
- regs->decimal_div_start, frac, config->frac_bits);
+ config->decimal_div_start, frac, FRAC_BITS);
pr_debug("SSC: div_per:0x%X, stepsize:0x%X, adjper:0x%X\n",
ssc_per, (u32)ssc_step_size, config->ssc_adj_per);
}
-static void dsi_pll_ssc_commit(struct dsi_pll_10nm *pll)
+static void dsi_pll_ssc_commit(struct dsi_pll_10nm *pll, struct dsi_pll_config *config)
{
void __iomem *base = pll->phy->pll_base;
- struct dsi_pll_regs *regs = &pll->reg_setup;
- if (pll->pll_configuration.enable_ssc) {
+ if (config->enable_ssc) {
pr_debug("SSC is enabled\n");
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_STEPSIZE_LOW_1,
- regs->ssc_stepsize_low);
+ config->ssc_stepsize & 0xff);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_STEPSIZE_HIGH_1,
- regs->ssc_stepsize_high);
+ config->ssc_stepsize >> 8);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_DIV_PER_LOW_1,
- regs->ssc_div_per_low);
+ config->ssc_div_per & 0xff);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_DIV_PER_HIGH_1,
- regs->ssc_div_per_high);
+ config->ssc_div_per >> 8);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_DIV_ADJPER_LOW_1,
- regs->ssc_adjper_low);
+ config->ssc_adj_per & 0xff);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_DIV_ADJPER_HIGH_1,
- regs->ssc_adjper_high);
+ config->ssc_adj_per >> 8);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_SSC_CONTROL,
- SSC_EN | regs->ssc_control);
+ SSC_EN | (config->ssc_center ? SSC_CENTER : 0));
}
}
@@ -268,50 +214,48 @@ static void dsi_pll_config_hzindep_reg(struct dsi_pll_10nm *pll)
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_IFILT, 0x3f);
}
-static void dsi_pll_commit(struct dsi_pll_10nm *pll)
+static void dsi_pll_commit(struct dsi_pll_10nm *pll, struct dsi_pll_config *config)
{
void __iomem *base = pll->phy->pll_base;
- struct dsi_pll_regs *reg = &pll->reg_setup;
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_CORE_INPUT_OVERRIDE, 0x12);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_DECIMAL_DIV_START_1,
- reg->decimal_div_start);
+ config->decimal_div_start);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_FRAC_DIV_START_LOW_1,
- reg->frac_div_start_low);
+ config->frac_div_start & 0xff);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_FRAC_DIV_START_MID_1,
- reg->frac_div_start_mid);
+ (config->frac_div_start & 0xff00) >> 8);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_FRAC_DIV_START_HIGH_1,
- reg->frac_div_start_high);
- dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_PLL_LOCKDET_RATE_1,
- reg->pll_lockdet_rate);
+ (config->frac_div_start & 0x30000) >> 16);
+ dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_PLL_LOCKDET_RATE_1, 64);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_PLL_LOCK_DELAY, 0x06);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_CMODE, 0x10);
dsi_phy_write(base + REG_DSI_10nm_PHY_PLL_CLOCK_INVERTERS,
- reg->pll_clock_inverters);
+ config->pll_clock_inverters);
}
static int dsi_pll_10nm_vco_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct dsi_pll_10nm *pll_10nm = to_pll_10nm(hw);
+ struct dsi_pll_config config;
DBG("DSI PLL%d rate=%lu, parent's=%lu", pll_10nm->phy->id, rate,
parent_rate);
pll_10nm->vco_current_rate = rate;
- pll_10nm->vco_ref_clk_rate = VCO_REF_CLK_RATE;
- dsi_pll_setup_config(pll_10nm);
+ dsi_pll_setup_config(&config);
- dsi_pll_calc_dec_frac(pll_10nm);
+ dsi_pll_calc_dec_frac(pll_10nm, &config);
- dsi_pll_calc_ssc(pll_10nm);
+ dsi_pll_calc_ssc(pll_10nm, &config);
- dsi_pll_commit(pll_10nm);
+ dsi_pll_commit(pll_10nm, &config);
dsi_pll_config_hzindep_reg(pll_10nm);
- dsi_pll_ssc_commit(pll_10nm);
+ dsi_pll_ssc_commit(pll_10nm, &config);
/* flush, ensure all register writes are done*/
wmb();
@@ -458,9 +402,8 @@ static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct dsi_pll_10nm *pll_10nm = to_pll_10nm(hw);
- struct dsi_pll_config *config = &pll_10nm->pll_configuration;
void __iomem *base = pll_10nm->phy->pll_base;
- u64 ref_clk = pll_10nm->vco_ref_clk_rate;
+ u64 ref_clk = VCO_REF_CLK_RATE;
u64 vco_rate = 0x0;
u64 multiplier;
u32 frac;
@@ -480,7 +423,7 @@ static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw,
* TODO:
* 1. Assumes prescaler is disabled
*/
- multiplier = 1 << config->frac_bits;
+ multiplier = 1 << FRAC_BITS;
pll_freq = dec * (ref_clk * 2);
tmp64 = (ref_clk * 2 * frac);
pll_freq += div_u64(tmp64, multiplier);
@@ -562,7 +505,7 @@ static int dsi_10nm_restore_state(struct msm_dsi_phy *phy)
val |= cached->pll_mux;
dsi_phy_write(phy_base + REG_DSI_10nm_PHY_CMN_CLK_CFG1, val);
- ret = dsi_pll_10nm_vco_set_rate(phy->vco_hw, pll_10nm->vco_current_rate, pll_10nm->vco_ref_clk_rate);
+ ret = dsi_pll_10nm_vco_set_rate(phy->vco_hw, pll_10nm->vco_current_rate, VCO_REF_CLK_RATE);
if (ret) {
DRM_DEV_ERROR(&pll_10nm->phy->pdev->dev,
"restore vco rate failed. ret=%d\n", ret);
@@ -37,51 +37,19 @@
#define VCO_MIN_RATE 1300000000UL
#define VCO_MAX_RATE 2600000000UL
-#define DSI_PLL_DEFAULT_VCO_POSTDIV 1
+struct dsi_pll_config {
+ u64 vco_current_rate;
-struct dsi_pll_input {
- u32 fref; /* reference clk */
- u32 fdata; /* bit clock rate */
- u32 dsiclk_sel; /* Mux configuration (see diagram) */
u32 ssc_en; /* SSC enable/disable */
- u32 ldo_en;
/* fixed params */
- u32 refclk_dbler_en;
- u32 vco_measure_time;
- u32 kvco_measure_time;
- u32 bandgap_timer;
- u32 pll_wakeup_timer;
u32 plllock_cnt;
- u32 plllock_rng;
u32 ssc_center;
u32 ssc_adj_period;
u32 ssc_spread;
u32 ssc_freq;
- u32 pll_ie_trim;
- u32 pll_ip_trim;
- u32 pll_iptat_trim;
- u32 pll_cpcset_cur;
- u32 pll_cpmset_cur;
-
- u32 pll_icpmset;
- u32 pll_icpcset;
-
- u32 pll_icpmset_p;
- u32 pll_icpmset_m;
-
- u32 pll_icpcset_p;
- u32 pll_icpcset_m;
-
- u32 pll_lpf_res1;
- u32 pll_lpf_cap1;
- u32 pll_lpf_cap2;
- u32 pll_c3ctrl;
- u32 pll_r3ctrl;
-};
-struct dsi_pll_output {
- u32 pll_txclk_en;
+ /* calculated */
u32 dec_start;
u32 div_frac_start;
u32 ssc_period;
@@ -91,19 +59,6 @@ struct dsi_pll_output {
u32 pll_vco_count;
u32 pll_kvco_div_ref;
u32 pll_kvco_count;
- u32 pll_misc1;
- u32 pll_lpf2_postdiv;
- u32 pll_resetsm_cntrl;
- u32 pll_resetsm_cntrl2;
- u32 pll_resetsm_cntrl5;
- u32 pll_kvco_code;
-
- u32 cmn_clk_cfg0;
- u32 cmn_clk_cfg1;
- u32 cmn_ldo_cntrl;
-
- u32 pll_postdiv;
- u32 fcvo;
};
struct pll_14nm_cached_state {
@@ -117,15 +72,9 @@ struct dsi_pll_14nm {
struct msm_dsi_phy *phy;
- struct dsi_pll_input in;
- struct dsi_pll_output out;
-
/* protects REG_DSI_14nm_PHY_CMN_CLK_CFG0 register */
spinlock_t postdiv_lock;
- u64 vco_current_rate;
- u64 vco_ref_clk_rate;
-
struct pll_14nm_cached_state cached_state;
struct dsi_pll_14nm *slave;
@@ -195,78 +144,50 @@ static bool pll_14nm_poll_for_ready(struct dsi_pll_14nm *pll_14nm,
return pll_locked;
}
-static void dsi_pll_14nm_input_init(struct dsi_pll_14nm *pll)
+static void dsi_pll_14nm_config_init(struct dsi_pll_config *pconf)
{
- pll->in.fref = pll->vco_ref_clk_rate;
- pll->in.fdata = 0;
- pll->in.dsiclk_sel = 1; /* Use the /2 path in Mux */
- pll->in.ldo_en = 0; /* disabled for now */
-
/* fixed input */
- pll->in.refclk_dbler_en = 0;
- pll->in.vco_measure_time = 5;
- pll->in.kvco_measure_time = 5;
- pll->in.bandgap_timer = 4;
- pll->in.pll_wakeup_timer = 5;
- pll->in.plllock_cnt = 1;
- pll->in.plllock_rng = 0;
+ pconf->plllock_cnt = 1;
/*
* SSC is enabled by default. We might need DT props for configuring
* some SSC params like PPM and center/down spread etc.
*/
- pll->in.ssc_en = 1;
- pll->in.ssc_center = 0; /* down spread by default */
- pll->in.ssc_spread = 5; /* PPM / 1000 */
- pll->in.ssc_freq = 31500; /* default recommended */
- pll->in.ssc_adj_period = 37;
-
- pll->in.pll_ie_trim = 4;
- pll->in.pll_ip_trim = 4;
- pll->in.pll_cpcset_cur = 1;
- pll->in.pll_cpmset_cur = 1;
- pll->in.pll_icpmset = 4;
- pll->in.pll_icpcset = 4;
- pll->in.pll_icpmset_p = 0;
- pll->in.pll_icpmset_m = 0;
- pll->in.pll_icpcset_p = 0;
- pll->in.pll_icpcset_m = 0;
- pll->in.pll_lpf_res1 = 3;
- pll->in.pll_lpf_cap1 = 11;
- pll->in.pll_lpf_cap2 = 1;
- pll->in.pll_iptat_trim = 7;
- pll->in.pll_c3ctrl = 2;
- pll->in.pll_r3ctrl = 1;
+ pconf->ssc_en = 1;
+ pconf->ssc_center = 0; /* down spread by default */
+ pconf->ssc_spread = 5; /* PPM / 1000 */
+ pconf->ssc_freq = 31500; /* default recommended */
+ pconf->ssc_adj_period = 37;
}
#define CEIL(x, y) (((x) + ((y) - 1)) / (y))
-static void pll_14nm_ssc_calc(struct dsi_pll_14nm *pll)
+static void pll_14nm_ssc_calc(struct dsi_pll_14nm *pll, struct dsi_pll_config *pconf)
{
u32 period, ssc_period;
u32 ref, rem;
u64 step_size;
- DBG("vco=%lld ref=%lld", pll->vco_current_rate, pll->vco_ref_clk_rate);
+ DBG("vco=%lld ref=%d", pconf->vco_current_rate, VCO_REF_CLK_RATE);
- ssc_period = pll->in.ssc_freq / 500;
- period = (u32)pll->vco_ref_clk_rate / 1000;
+ ssc_period = pconf->ssc_freq / 500;
+ period = (u32)VCO_REF_CLK_RATE / 1000;
ssc_period = CEIL(period, ssc_period);
ssc_period -= 1;
- pll->out.ssc_period = ssc_period;
+ pconf->ssc_period = ssc_period;
- DBG("ssc freq=%d spread=%d period=%d", pll->in.ssc_freq,
- pll->in.ssc_spread, pll->out.ssc_period);
+ DBG("ssc freq=%d spread=%d period=%d", pconf->ssc_freq,
+ pconf->ssc_spread, pconf->ssc_period);
- step_size = (u32)pll->vco_current_rate;
- ref = pll->vco_ref_clk_rate;
+ step_size = (u32)pconf->vco_current_rate;
+ ref = VCO_REF_CLK_RATE;
ref /= 1000;
step_size = div_u64(step_size, ref);
step_size <<= 20;
step_size = div_u64(step_size, 1000);
- step_size *= pll->in.ssc_spread;
+ step_size *= pconf->ssc_spread;
step_size = div_u64(step_size, 1000);
- step_size *= (pll->in.ssc_adj_period + 1);
+ step_size *= (pconf->ssc_adj_period + 1);
rem = 0;
step_size = div_u64_rem(step_size, ssc_period + 1, &rem);
@@ -277,18 +198,16 @@ static void pll_14nm_ssc_calc(struct dsi_pll_14nm *pll)
step_size &= 0x0ffff; /* take lower 16 bits */
- pll->out.ssc_step_size = step_size;
+ pconf->ssc_step_size = step_size;
}
-static void pll_14nm_dec_frac_calc(struct dsi_pll_14nm *pll)
+static void pll_14nm_dec_frac_calc(struct dsi_pll_14nm *pll, struct dsi_pll_config *pconf)
{
- struct dsi_pll_input *pin = &pll->in;
- struct dsi_pll_output *pout = &pll->out;
u64 multiplier = BIT(20);
u64 dec_start_multiple, dec_start, pll_comp_val;
u32 duration, div_frac_start;
- u64 vco_clk_rate = pll->vco_current_rate;
- u64 fref = pll->vco_ref_clk_rate;
+ u64 vco_clk_rate = pconf->vco_current_rate;
+ u64 fref = VCO_REF_CLK_RATE;
DBG("vco_clk_rate=%lld ref_clk_rate=%lld", vco_clk_rate, fref);
@@ -297,14 +216,14 @@ static void pll_14nm_dec_frac_calc(struct dsi_pll_14nm *pll)
dec_start = div_u64(dec_start_multiple, multiplier);
- pout->dec_start = (u32)dec_start;
- pout->div_frac_start = div_frac_start;
+ pconf->dec_start = (u32)dec_start;
+ pconf->div_frac_start = div_frac_start;
- if (pin->plllock_cnt == 0)
+ if (pconf->plllock_cnt == 0)
duration = 1024;
- else if (pin->plllock_cnt == 1)
+ else if (pconf->plllock_cnt == 1)
duration = 256;
- else if (pin->plllock_cnt == 2)
+ else if (pconf->plllock_cnt == 2)
duration = 128;
else
duration = 32;
@@ -313,10 +232,7 @@ static void pll_14nm_dec_frac_calc(struct dsi_pll_14nm *pll)
pll_comp_val = div_u64(pll_comp_val, multiplier);
do_div(pll_comp_val, 10);
- pout->plllock_cmp = (u32)pll_comp_val;
-
- pout->pll_txclk_en = 1;
- pout->cmn_ldo_cntrl = 0x3c;
+ pconf->plllock_cmp = (u32)pll_comp_val;
}
static u32 pll_14nm_kvco_slop(u32 vrate)
@@ -333,74 +249,66 @@ static u32 pll_14nm_kvco_slop(u32 vrate)
return slop;
}
-static void pll_14nm_calc_vco_count(struct dsi_pll_14nm *pll)
+static void pll_14nm_calc_vco_count(struct dsi_pll_14nm *pll, struct dsi_pll_config *pconf)
{
- struct dsi_pll_input *pin = &pll->in;
- struct dsi_pll_output *pout = &pll->out;
- u64 vco_clk_rate = pll->vco_current_rate;
- u64 fref = pll->vco_ref_clk_rate;
+ u64 vco_clk_rate = pconf->vco_current_rate;
+ u64 fref = VCO_REF_CLK_RATE;
+ u32 vco_measure_time = 5;
+ u32 kvco_measure_time = 5;
u64 data;
u32 cnt;
- data = fref * pin->vco_measure_time;
+ data = fref * vco_measure_time;
do_div(data, 1000000);
data &= 0x03ff; /* 10 bits */
data -= 2;
- pout->pll_vco_div_ref = data;
+ pconf->pll_vco_div_ref = data;
data = div_u64(vco_clk_rate, 1000000); /* unit is Mhz */
- data *= pin->vco_measure_time;
+ data *= vco_measure_time;
do_div(data, 10);
- pout->pll_vco_count = data;
+ pconf->pll_vco_count = data;
- data = fref * pin->kvco_measure_time;
+ data = fref * kvco_measure_time;
do_div(data, 1000000);
data &= 0x03ff; /* 10 bits */
data -= 1;
- pout->pll_kvco_div_ref = data;
+ pconf->pll_kvco_div_ref = data;
cnt = pll_14nm_kvco_slop(vco_clk_rate);
cnt *= 2;
cnt /= 100;
- cnt *= pin->kvco_measure_time;
- pout->pll_kvco_count = cnt;
-
- pout->pll_misc1 = 16;
- pout->pll_resetsm_cntrl = 48;
- pout->pll_resetsm_cntrl2 = pin->bandgap_timer << 3;
- pout->pll_resetsm_cntrl5 = pin->pll_wakeup_timer;
- pout->pll_kvco_code = 0;
+ cnt *= kvco_measure_time;
+ pconf->pll_kvco_count = cnt;
}
-static void pll_db_commit_ssc(struct dsi_pll_14nm *pll)
+static void pll_db_commit_ssc(struct dsi_pll_14nm *pll, struct dsi_pll_config *pconf)
{
void __iomem *base = pll->phy->pll_base;
- struct dsi_pll_input *pin = &pll->in;
- struct dsi_pll_output *pout = &pll->out;
u8 data;
- data = pin->ssc_adj_period;
+ data = pconf->ssc_adj_period;
data &= 0x0ff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_ADJ_PER1, data);
- data = (pin->ssc_adj_period >> 8);
+ data = (pconf->ssc_adj_period >> 8);
data &= 0x03;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_ADJ_PER2, data);
- data = pout->ssc_period;
+ data = pconf->ssc_period;
data &= 0x0ff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_PER1, data);
- data = (pout->ssc_period >> 8);
+ data = (pconf->ssc_period >> 8);
data &= 0x0ff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_PER2, data);
- data = pout->ssc_step_size;
+ data = pconf->ssc_step_size;
data &= 0x0ff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_STEP_SIZE1, data);
- data = (pout->ssc_step_size >> 8);
+ data = (pconf->ssc_step_size >> 8);
data &= 0x0ff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_STEP_SIZE2, data);
- data = (pin->ssc_center & 0x01);
+ data = (pconf->ssc_center & 0x01);
data <<= 1;
data |= 0x01; /* enable */
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SSC_EN_CENTER, data);
@@ -409,8 +317,7 @@ static void pll_db_commit_ssc(struct dsi_pll_14nm *pll)
}
static void pll_db_commit_common(struct dsi_pll_14nm *pll,
- struct dsi_pll_input *pin,
- struct dsi_pll_output *pout)
+ struct dsi_pll_config *pconf)
{
void __iomem *base = pll->phy->pll_base;
u8 data;
@@ -419,55 +326,41 @@ static void pll_db_commit_common(struct dsi_pll_14nm *pll,
data = 0;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_SYSCLK_EN_RESET, data);
- data = pout->pll_txclk_en;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_TXCLK_EN, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_TXCLK_EN, 1);
- data = pout->pll_resetsm_cntrl;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL, data);
- data = pout->pll_resetsm_cntrl2;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL2, data);
- data = pout->pll_resetsm_cntrl5;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL5, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL, 48);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL2, 4 << 3); /* bandgap_timer */
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_RESETSM_CNTRL5, 5); /* pll_wakeup_timer */
- data = pout->pll_vco_div_ref & 0xff;
+ data = pconf->pll_vco_div_ref & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_VCO_DIV_REF1, data);
- data = (pout->pll_vco_div_ref >> 8) & 0x3;
+ data = (pconf->pll_vco_div_ref >> 8) & 0x3;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_VCO_DIV_REF2, data);
- data = pout->pll_kvco_div_ref & 0xff;
+ data = pconf->pll_kvco_div_ref & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_KVCO_DIV_REF1, data);
- data = (pout->pll_kvco_div_ref >> 8) & 0x3;
+ data = (pconf->pll_kvco_div_ref >> 8) & 0x3;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_KVCO_DIV_REF2, data);
- data = pout->pll_misc1;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_MISC1, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_MISC1, 16);
- data = pin->pll_ie_trim;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IE_TRIM, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IE_TRIM, 4);
- data = pin->pll_ip_trim;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IP_TRIM, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IP_TRIM, 4);
- data = pin->pll_cpmset_cur << 3 | pin->pll_cpcset_cur;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_CP_SET_CUR, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_CP_SET_CUR, 1 << 3 | 1);
- data = pin->pll_icpcset_p << 3 | pin->pll_icpcset_m;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICPCSET, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICPCSET, 0 << 3 | 0);
- data = pin->pll_icpmset_p << 3 | pin->pll_icpcset_m;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICPMSET, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICPMSET, 0 << 3 | 0);
- data = pin->pll_icpmset << 3 | pin->pll_icpcset;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICP_SET, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_ICP_SET, 4 << 3 | 4);
- data = pin->pll_lpf_cap2 << 4 | pin->pll_lpf_cap1;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_LPF1, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_LPF1, 1 << 4 | 11);
- data = pin->pll_iptat_trim;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IPTAT_TRIM, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_IPTAT_TRIM, 7);
- data = pin->pll_c3ctrl | pin->pll_r3ctrl << 4;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_CRCTRL, data);
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_CRCTRL, 1 << 4 | 2);
}
static void pll_14nm_software_reset(struct dsi_pll_14nm *pll_14nm)
@@ -488,8 +381,7 @@ static void pll_14nm_software_reset(struct dsi_pll_14nm *pll_14nm)
}
static void pll_db_commit_14nm(struct dsi_pll_14nm *pll,
- struct dsi_pll_input *pin,
- struct dsi_pll_output *pout)
+ struct dsi_pll_config *pconf)
{
void __iomem *base = pll->phy->pll_base;
void __iomem *cmn_base = pll->phy->base;
@@ -497,57 +389,64 @@ static void pll_db_commit_14nm(struct dsi_pll_14nm *pll,
DBG("DSI%d PLL", pll->phy->id);
- data = pout->cmn_ldo_cntrl;
- dsi_phy_write(cmn_base + REG_DSI_14nm_PHY_CMN_LDO_CNTRL, data);
+ dsi_phy_write(cmn_base + REG_DSI_14nm_PHY_CMN_LDO_CNTRL, 0x3c);
- pll_db_commit_common(pll, pin, pout);
+ pll_db_commit_common(pll, pconf);
pll_14nm_software_reset(pll);
- data = pin->dsiclk_sel; /* set dsiclk_sel = 1 */
- dsi_phy_write(cmn_base + REG_DSI_14nm_PHY_CMN_CLK_CFG1, data);
+ /* Use the /2 path in Mux */
+ dsi_phy_write(cmn_base + REG_DSI_14nm_PHY_CMN_CLK_CFG1, 1);
data = 0xff; /* data, clk, pll normal operation */
dsi_phy_write(cmn_base + REG_DSI_14nm_PHY_CMN_CTRL_0, data);
/* configure the frequency dependent pll registers */
- data = pout->dec_start;
+ data = pconf->dec_start;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_DEC_START, data);
- data = pout->div_frac_start & 0xff;
+ data = pconf->div_frac_start & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_DIV_FRAC_START1, data);
- data = (pout->div_frac_start >> 8) & 0xff;
+ data = (pconf->div_frac_start >> 8) & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_DIV_FRAC_START2, data);
- data = (pout->div_frac_start >> 16) & 0xf;
+ data = (pconf->div_frac_start >> 16) & 0xf;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_DIV_FRAC_START3, data);
- data = pout->plllock_cmp & 0xff;
+ data = pconf->plllock_cmp & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLLLOCK_CMP1, data);
- data = (pout->plllock_cmp >> 8) & 0xff;
+ data = (pconf->plllock_cmp >> 8) & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLLLOCK_CMP2, data);
- data = (pout->plllock_cmp >> 16) & 0x3;
+ data = (pconf->plllock_cmp >> 16) & 0x3;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLLLOCK_CMP3, data);
- data = pin->plllock_cnt << 1 | pin->plllock_rng << 3;
+ data = pconf->plllock_cnt << 1 | 0 << 3; /* plllock_rng */
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLLLOCK_CMP_EN, data);
- data = pout->pll_vco_count & 0xff;
+ data = pconf->pll_vco_count & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_VCO_COUNT1, data);
- data = (pout->pll_vco_count >> 8) & 0xff;
+ data = (pconf->pll_vco_count >> 8) & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_VCO_COUNT2, data);
- data = pout->pll_kvco_count & 0xff;
+ data = pconf->pll_kvco_count & 0xff;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_KVCO_COUNT1, data);
- data = (pout->pll_kvco_count >> 8) & 0x3;
+ data = (pconf->pll_kvco_count >> 8) & 0x3;
dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_KVCO_COUNT2, data);
- data = (pout->pll_postdiv - 1) << 4 | pin->pll_lpf_res1;
- dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_LPF2_POSTDIV, data);
+ /*
+ * High nibble configures the post divider internal to the VCO. It's
+ * fixed to divide by 1 for now.
+ *
+ * 0: divided by 1
+ * 1: divided by 2
+ * 2: divided by 4
+ * 3: divided by 8
+ */
+ dsi_phy_write(base + REG_DSI_14nm_PHY_PLL_PLL_LPF2_POSTDIV, 0 << 4 | 3);
- if (pin->ssc_en)
- pll_db_commit_ssc(pll);
+ if (pconf->ssc_en)
+ pll_db_commit_ssc(pll, pconf);
wmb(); /* make sure register committed */
}
@@ -559,35 +458,20 @@ static int dsi_pll_14nm_vco_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct dsi_pll_14nm *pll_14nm = to_pll_14nm(hw);
- struct dsi_pll_input *pin = &pll_14nm->in;
- struct dsi_pll_output *pout = &pll_14nm->out;
+ struct dsi_pll_config conf;
DBG("DSI PLL%d rate=%lu, parent's=%lu", pll_14nm->phy->id, rate,
parent_rate);
- pll_14nm->vco_current_rate = rate;
- pll_14nm->vco_ref_clk_rate = VCO_REF_CLK_RATE;
-
- dsi_pll_14nm_input_init(pll_14nm);
-
- /*
- * This configures the post divider internal to the VCO. It's
- * fixed to divide by 1 for now.
- *
- * tx_band = pll_postdiv.
- * 0: divided by 1
- * 1: divided by 2
- * 2: divided by 4
- * 3: divided by 8
- */
- pout->pll_postdiv = DSI_PLL_DEFAULT_VCO_POSTDIV;
+ dsi_pll_14nm_config_init(&conf);
+ conf.vco_current_rate = rate;
- pll_14nm_dec_frac_calc(pll_14nm);
+ pll_14nm_dec_frac_calc(pll_14nm, &conf);
- if (pin->ssc_en)
- pll_14nm_ssc_calc(pll_14nm);
+ if (conf.ssc_en)
+ pll_14nm_ssc_calc(pll_14nm, &conf);
- pll_14nm_calc_vco_count(pll_14nm);
+ pll_14nm_calc_vco_count(pll_14nm, &conf);
/* commit the slave DSI PLL registers if we're master. Note that we
* don't lock the slave PLL. We just ensure that the PLL/PHY registers
@@ -596,10 +480,10 @@ static int dsi_pll_14nm_vco_set_rate(struct clk_hw *hw, unsigned long rate,
if (pll_14nm->phy->usecase == MSM_DSI_PHY_MASTER) {
struct dsi_pll_14nm *pll_14nm_slave = pll_14nm->slave;
- pll_db_commit_14nm(pll_14nm_slave, pin, pout);
+ pll_db_commit_14nm(pll_14nm_slave, &conf);
}
- pll_db_commit_14nm(pll_14nm, pin, pout);
+ pll_db_commit_14nm(pll_14nm, &conf);
return 0;
}
@@ -36,40 +36,21 @@
*/
#define VCO_REF_CLK_RATE 19200000
-
-struct dsi_pll_regs {
- u32 pll_prop_gain_rate;
- u32 pll_lockdet_rate;
- u32 decimal_div_start;
- u32 frac_div_start_low;
- u32 frac_div_start_mid;
- u32 frac_div_start_high;
- u32 pll_clock_inverters;
- u32 ssc_stepsize_low;
- u32 ssc_stepsize_high;
- u32 ssc_div_per_low;
- u32 ssc_div_per_high;
- u32 ssc_adjper_low;
- u32 ssc_adjper_high;
- u32 ssc_control;
-};
+#define FRAC_BITS 18
struct dsi_pll_config {
- u32 ref_freq;
- bool div_override;
- u32 output_div;
- bool ignore_frac;
- bool disable_prescaler;
bool enable_ssc;
bool ssc_center;
- u32 dec_bits;
- u32 frac_bits;
- u32 lock_timer;
u32 ssc_freq;
u32 ssc_offset;
u32 ssc_adj_per;
- u32 thresh_cycles;
- u32 refclk_cycles;
+
+ /* out */
+ u32 decimal_div_start;
+ u32 frac_div_start;
+ u32 pll_clock_inverters;
+ u32 ssc_stepsize;
+ u32 ssc_div_per;
};
struct pll_7nm_cached_state {
@@ -85,15 +66,11 @@ struct dsi_pll_7nm {
struct msm_dsi_phy *phy;
- u64 vco_ref_clk_rate;
u64 vco_current_rate;
/* protects REG_DSI_7nm_PHY_CMN_CLK_CFG0 register */
spinlock_t postdiv_lock;
- struct dsi_pll_config pll_configuration;
- struct dsi_pll_regs reg_setup;
-
struct pll_7nm_cached_state cached_state;
struct dsi_pll_7nm *slave;
@@ -107,35 +84,20 @@ struct dsi_pll_7nm {
*/
static struct dsi_pll_7nm *pll_7nm_list[DSI_MAX];
-static void dsi_pll_setup_config(struct dsi_pll_7nm *pll)
+static void dsi_pll_setup_config(struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
-
- config->ref_freq = pll->vco_ref_clk_rate;
- config->output_div = 1;
- config->dec_bits = 8;
- config->frac_bits = 18;
- config->lock_timer = 64;
config->ssc_freq = 31500;
config->ssc_offset = 4800;
config->ssc_adj_per = 2;
- config->thresh_cycles = 32;
- config->refclk_cycles = 256;
-
- config->div_override = false;
- config->ignore_frac = false;
- config->disable_prescaler = false;
/* TODO: ssc enable */
config->enable_ssc = false;
config->ssc_center = 0;
}
-static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll)
+static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
- struct dsi_pll_regs *regs = &pll->reg_setup;
- u64 fref = pll->vco_ref_clk_rate;
+ u64 fref = VCO_REF_CLK_RATE;
u64 pll_freq;
u64 divider;
u64 dec, dec_multiple;
@@ -144,42 +106,34 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll)
pll_freq = pll->vco_current_rate;
- if (config->disable_prescaler)
- divider = fref;
- else
- divider = fref * 2;
+ divider = fref * 2;
- multiplier = 1 << config->frac_bits;
+ multiplier = 1 << FRAC_BITS;
dec_multiple = div_u64(pll_freq * multiplier, divider);
div_u64_rem(dec_multiple, multiplier, &frac);
dec = div_u64(dec_multiple, multiplier);
if (pll->phy->cfg->type != MSM_DSI_PHY_7NM_V4_1)
- regs->pll_clock_inverters = 0x28;
+ config->pll_clock_inverters = 0x28;
else if (pll_freq <= 1000000000ULL)
- regs->pll_clock_inverters = 0xa0;
+ config->pll_clock_inverters = 0xa0;
else if (pll_freq <= 2500000000ULL)
- regs->pll_clock_inverters = 0x20;
+ config->pll_clock_inverters = 0x20;
else if (pll_freq <= 3020000000ULL)
- regs->pll_clock_inverters = 0x00;
+ config->pll_clock_inverters = 0x00;
else
- regs->pll_clock_inverters = 0x40;
+ config->pll_clock_inverters = 0x40;
- regs->pll_lockdet_rate = config->lock_timer;
- regs->decimal_div_start = dec;
- regs->frac_div_start_low = (frac & 0xff);
- regs->frac_div_start_mid = (frac & 0xff00) >> 8;
- regs->frac_div_start_high = (frac & 0x30000) >> 16;
+ config->decimal_div_start = dec;
+ config->frac_div_start = frac;
}
#define SSC_CENTER BIT(0)
#define SSC_EN BIT(1)
-static void dsi_pll_calc_ssc(struct dsi_pll_7nm *pll)
+static void dsi_pll_calc_ssc(struct dsi_pll_7nm *pll, struct dsi_pll_config *config)
{
- struct dsi_pll_config *config = &pll->pll_configuration;
- struct dsi_pll_regs *regs = &pll->reg_setup;
u32 ssc_per;
u32 ssc_mod;
u64 ssc_step_size;
@@ -190,58 +144,49 @@ static void dsi_pll_calc_ssc(struct dsi_pll_7nm *pll)
return;
}
- ssc_per = DIV_ROUND_CLOSEST(config->ref_freq, config->ssc_freq) / 2 - 1;
+ ssc_per = DIV_ROUND_CLOSEST(VCO_REF_CLK_RATE, config->ssc_freq) / 2 - 1;
ssc_mod = (ssc_per + 1) % (config->ssc_adj_per + 1);
ssc_per -= ssc_mod;
- frac = regs->frac_div_start_low |
- (regs->frac_div_start_mid << 8) |
- (regs->frac_div_start_high << 16);
- ssc_step_size = regs->decimal_div_start;
- ssc_step_size *= (1 << config->frac_bits);
+ frac = config->frac_div_start;
+ ssc_step_size = config->decimal_div_start;
+ ssc_step_size *= (1 << FRAC_BITS);
ssc_step_size += frac;
ssc_step_size *= config->ssc_offset;
ssc_step_size *= (config->ssc_adj_per + 1);
ssc_step_size = div_u64(ssc_step_size, (ssc_per + 1));
ssc_step_size = DIV_ROUND_CLOSEST_ULL(ssc_step_size, 1000000);
- regs->ssc_div_per_low = ssc_per & 0xFF;
- regs->ssc_div_per_high = (ssc_per & 0xFF00) >> 8;
- regs->ssc_stepsize_low = (u32)(ssc_step_size & 0xFF);
- regs->ssc_stepsize_high = (u32)((ssc_step_size & 0xFF00) >> 8);
- regs->ssc_adjper_low = config->ssc_adj_per & 0xFF;
- regs->ssc_adjper_high = (config->ssc_adj_per & 0xFF00) >> 8;
-
- regs->ssc_control = config->ssc_center ? SSC_CENTER : 0;
+ config->ssc_div_per = ssc_per;
+ config->ssc_stepsize = ssc_step_size;
pr_debug("SCC: Dec:%d, frac:%llu, frac_bits:%d\n",
- regs->decimal_div_start, frac, config->frac_bits);
+ config->decimal_div_start, frac, FRAC_BITS);
pr_debug("SSC: div_per:0x%X, stepsize:0x%X, adjper:0x%X\n",
ssc_per, (u32)ssc_step_size, config->ssc_adj_per);
}
-static void dsi_pll_ssc_commit(struct dsi_pll_7nm *pll)
+static void dsi_pll_ssc_commit(struct dsi_pll_7nm *pll, struct dsi_pll_config *config)
{
void __iomem *base = pll->phy->pll_base;
- struct dsi_pll_regs *regs = &pll->reg_setup;
- if (pll->pll_configuration.enable_ssc) {
+ if (config->enable_ssc) {
pr_debug("SSC is enabled\n");
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_STEPSIZE_LOW_1,
- regs->ssc_stepsize_low);
+ config->ssc_stepsize & 0xff);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_STEPSIZE_HIGH_1,
- regs->ssc_stepsize_high);
+ config->ssc_stepsize >> 8);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_DIV_PER_LOW_1,
- regs->ssc_div_per_low);
+ config->ssc_div_per & 0xff);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_DIV_PER_HIGH_1,
- regs->ssc_div_per_high);
+ config->ssc_div_per >> 8);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_ADJPER_LOW_1,
- regs->ssc_adjper_low);
+ config->ssc_adj_per & 0xff);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_ADJPER_HIGH_1,
- regs->ssc_adjper_high);
+ config->ssc_adj_per >> 8);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_SSC_CONTROL,
- SSC_EN | regs->ssc_control);
+ SSC_EN | (config->ssc_center ? SSC_CENTER : 0));
}
}
@@ -293,44 +238,46 @@ static void dsi_pll_config_hzindep_reg(struct dsi_pll_7nm *pll)
}
}
-static void dsi_pll_commit(struct dsi_pll_7nm *pll)
+static void dsi_pll_commit(struct dsi_pll_7nm *pll, struct dsi_pll_config *config)
{
void __iomem *base = pll->phy->pll_base;
- struct dsi_pll_regs *reg = &pll->reg_setup;
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_CORE_INPUT_OVERRIDE, 0x12);
- dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_DECIMAL_DIV_START_1, reg->decimal_div_start);
- dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_LOW_1, reg->frac_div_start_low);
- dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_MID_1, reg->frac_div_start_mid);
- dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_HIGH_1, reg->frac_div_start_high);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_DECIMAL_DIV_START_1, config->decimal_div_start);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_LOW_1,
+ config->frac_div_start & 0xff);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_MID_1,
+ (config->frac_div_start & 0xff00) >> 8);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_HIGH_1,
+ (config->frac_div_start & 0x30000) >> 16);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_PLL_LOCKDET_RATE_1, 0x40);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_PLL_LOCK_DELAY, 0x06);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_CMODE_1, 0x10); /* TODO: 0x00 for CPHY */
- dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_CLOCK_INVERTERS, reg->pll_clock_inverters);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_CLOCK_INVERTERS, config->pll_clock_inverters);
}
static int dsi_pll_7nm_vco_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct dsi_pll_7nm *pll_7nm = to_pll_7nm(hw);
+ struct dsi_pll_config config;
DBG("DSI PLL%d rate=%lu, parent's=%lu", pll_7nm->phy->id, rate,
parent_rate);
pll_7nm->vco_current_rate = rate;
- pll_7nm->vco_ref_clk_rate = VCO_REF_CLK_RATE;
- dsi_pll_setup_config(pll_7nm);
+ dsi_pll_setup_config(&config);
- dsi_pll_calc_dec_frac(pll_7nm);
+ dsi_pll_calc_dec_frac(pll_7nm, &config);
- dsi_pll_calc_ssc(pll_7nm);
+ dsi_pll_calc_ssc(pll_7nm, &config);
- dsi_pll_commit(pll_7nm);
+ dsi_pll_commit(pll_7nm, &config);
dsi_pll_config_hzindep_reg(pll_7nm);
- dsi_pll_ssc_commit(pll_7nm);
+ dsi_pll_ssc_commit(pll_7nm, &config);
/* flush, ensure all register writes are done*/
wmb();
@@ -484,7 +431,7 @@ static unsigned long dsi_pll_7nm_vco_recalc_rate(struct clk_hw *hw,
{
struct dsi_pll_7nm *pll_7nm = to_pll_7nm(hw);
void __iomem *base = pll_7nm->phy->pll_base;
- u64 ref_clk = pll_7nm->vco_ref_clk_rate;
+ u64 ref_clk = VCO_REF_CLK_RATE;
u64 vco_rate = 0x0;
u64 multiplier;
u32 frac;
@@ -587,7 +534,7 @@ static int dsi_7nm_restore_state(struct msm_dsi_phy *phy)
val |= cached->pll_mux;
dsi_phy_write(phy_base + REG_DSI_7nm_PHY_CMN_CLK_CFG1, val);
- ret = dsi_pll_7nm_vco_set_rate(phy->vco_hw, pll_7nm->vco_current_rate, pll_7nm->vco_ref_clk_rate);
+ ret = dsi_pll_7nm_vco_set_rate(phy->vco_hw, pll_7nm->vco_current_rate, VCO_REF_CLK_RATE);
if (ret) {
DRM_DEV_ERROR(&pll_7nm->phy->pdev->dev,
"restore vco rate failed. ret=%d\n", ret);
The 7nm, 10nm and 14nm drivers would store interim data used during VCO/PLL rate setting in the global dsi_pll_Nnm structure. Move this data structures to the onstack storage. While we are at it, drop unused/static 'config' data, unused config fields, etc. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 167 ++++------- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 334 +++++++-------------- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 161 ++++------ 3 files changed, 218 insertions(+), 444 deletions(-)