#define INTEL_LT_PHY_BOTH_LANES (INTEL_LT_PHY_LANE1 |\
INTEL_LT_PHY_LANE0)
#define MODE_DP 3
+#define Q32_TO_INT(x) ((x) >> 32)
+#define Q32_TO_FRAC(x) ((x) & 0xFFFFFFFF)
+#define DCO_MIN_FREQ_MHZ 11850
+#define REF_CLK_KHZ 38400
+#define TDC_RES_MULTIPLIER 10000000ULL
+
+struct phy_param_t {
+ u32 val;
+ u32 addr;
+};
+
+struct lt_phy_params {
+ struct phy_param_t pll_reg4;
+ struct phy_param_t pll_reg3;
+ struct phy_param_t pll_reg5;
+ struct phy_param_t pll_reg57;
+ struct phy_param_t lf;
+ struct phy_param_t tdc;
+ struct phy_param_t ssc;
+ struct phy_param_t bias2;
+ struct phy_param_t bias_trim;
+ struct phy_param_t dco_med;
+ struct phy_param_t dco_fine;
+ struct phy_param_t ssc_inj;
+ struct phy_param_t surv_bonus;
+};
static const struct intel_lt_phy_pll_state xe3plpd_lt_dp_rbr = {
.clock = 162000,
return false;
}
+static u64 mul_q32_u32(u64 a_q32, u32 b)
+{
+ u64 p0, p1, carry, result;
+ u64 x_hi = a_q32 >> 32;
+ u64 x_lo = a_q32 & 0xFFFFFFFFULL;
+
+ p0 = x_lo * (u64)b;
+ p1 = x_hi * (u64)b;
+ carry = p0 >> 32;
+ result = (p1 << 32) + (carry << 32) + (p0 & 0xFFFFFFFFULL);
+
+ return result;
+}
+
+static bool
+calculate_target_dco_and_loop_cnt(u32 frequency_khz, u64 *target_dco_mhz, u32 *loop_cnt)
+{
+ u32 ppm_value = 1;
+ u32 dco_min_freq = DCO_MIN_FREQ_MHZ;
+ u32 dco_max_freq = 16200;
+ u32 dco_min_freq_low = 10000;
+ u32 dco_max_freq_low = 12000;
+ u64 val = 0;
+ u64 refclk_khz = REF_CLK_KHZ;
+ u64 m2div = 0;
+ u64 val_with_frac = 0;
+ u64 ppm = 0;
+ u64 temp0 = 0, temp1, scale;
+ int ppm_cnt, dco_count, y;
+
+ for (ppm_cnt = 0; ppm_cnt < 5; ppm_cnt++) {
+ ppm_value = ppm_cnt == 2 ? 2 : 1;
+ for (dco_count = 0; dco_count < 2; dco_count++) {
+ if (dco_count == 1) {
+ dco_min_freq = dco_min_freq_low;
+ dco_max_freq = dco_max_freq_low;
+ }
+ for (y = 2; y <= 255; y += 2) {
+ val = div64_u64((u64)y * frequency_khz, 200);
+ m2div = div64_u64(((u64)(val) << 32), refclk_khz);
+ m2div = mul_q32_u32(m2div, 500);
+ val_with_frac = mul_q32_u32(m2div, refclk_khz);
+ val_with_frac = div64_u64(val_with_frac, 500);
+ temp1 = Q32_TO_INT(val_with_frac);
+ temp0 = (temp1 > val) ? (temp1 - val) :
+ (val - temp1);
+ ppm = div64_u64(temp0, val);
+ if (temp1 >= dco_min_freq &&
+ temp1 <= dco_max_freq &&
+ ppm < ppm_value) {
+ /* Round to two places */
+ scale = (1ULL << 32) / 100;
+ temp0 = DIV_ROUND_UP_ULL(val_with_frac,
+ scale);
+ *target_dco_mhz = temp0 * scale;
+ *loop_cnt = y;
+ return true;
+ }
+ }
+ }
+ }
+
+ return false;
+}
+
+static void set_phy_vdr_addresses(struct lt_phy_params *p, int pll_type)
+{
+ p->pll_reg4.addr = PLL_REG_ADDR(PLL_REG4_ADDR, pll_type);
+ p->pll_reg3.addr = PLL_REG_ADDR(PLL_REG3_ADDR, pll_type);
+ p->pll_reg5.addr = PLL_REG_ADDR(PLL_REG5_ADDR, pll_type);
+ p->pll_reg57.addr = PLL_REG_ADDR(PLL_REG57_ADDR, pll_type);
+ p->lf.addr = PLL_REG_ADDR(PLL_LF_ADDR, pll_type);
+ p->tdc.addr = PLL_REG_ADDR(PLL_TDC_ADDR, pll_type);
+ p->ssc.addr = PLL_REG_ADDR(PLL_SSC_ADDR, pll_type);
+ p->bias2.addr = PLL_REG_ADDR(PLL_BIAS2_ADDR, pll_type);
+ p->bias_trim.addr = PLL_REG_ADDR(PLL_BIAS_TRIM_ADDR, pll_type);
+ p->dco_med.addr = PLL_REG_ADDR(PLL_DCO_MED_ADDR, pll_type);
+ p->dco_fine.addr = PLL_REG_ADDR(PLL_DCO_FINE_ADDR, pll_type);
+ p->ssc_inj.addr = PLL_REG_ADDR(PLL_SSC_INJ_ADDR, pll_type);
+ p->surv_bonus.addr = PLL_REG_ADDR(PLL_SURV_BONUS_ADDR, pll_type);
+}
+
+static void compute_ssc(struct lt_phy_params *p, u32 ana_cfg)
+{
+ int ssc_stepsize = 0;
+ int ssc_steplen = 0;
+ int ssc_steplog = 0;
+
+ p->ssc.val = (1 << 31) | (ana_cfg << 24) | (ssc_steplog << 16) |
+ (ssc_stepsize << 8) | ssc_steplen;
+}
+
+static void compute_bias2(struct lt_phy_params *p)
+{
+ u32 ssc_en_local = 0;
+ u64 dynctrl_ovrd_en = 0;
+
+ p->bias2.val = (dynctrl_ovrd_en << 31) | (ssc_en_local << 30) |
+ (1 << 23) | (1 << 24) | (32 << 16) | (1 << 8);
+}
+
+static void compute_tdc(struct lt_phy_params *p, u64 tdc_fine)
+{
+ u32 settling_time = 15;
+ u32 bias_ovr_en = 1;
+ u32 coldstart = 1;
+ u32 true_lock = 2;
+ u32 early_lock = 1;
+ u32 lock_ovr_en = 1;
+ u32 lock_thr = tdc_fine ? 3 : 5;
+ u32 unlock_thr = tdc_fine ? 5 : 11;
+
+ p->tdc.val = (u32)((2 << 30) + (settling_time << 16) + (bias_ovr_en << 15) +
+ (lock_ovr_en << 14) + (coldstart << 12) + (true_lock << 10) +
+ (early_lock << 8) + (unlock_thr << 4) + lock_thr);
+}
+
+static void compute_dco_med(struct lt_phy_params *p)
+{
+ u32 cselmed_en = 0;
+ u32 cselmed_dyn_adj = 0;
+ u32 cselmed_ratio = 39;
+ u32 cselmed_thr = 8;
+
+ p->dco_med.val = (cselmed_en << 31) + (cselmed_dyn_adj << 30) +
+ (cselmed_ratio << 24) + (cselmed_thr << 21);
+}
+
+static void compute_dco_fine(struct lt_phy_params *p, u32 dco_12g)
+{
+ u32 dco_fine0_tune_2_0 = 0;
+ u32 dco_fine1_tune_2_0 = 0;
+ u32 dco_fine2_tune_2_0 = 0;
+ u32 dco_fine3_tune_2_0 = 0;
+ u32 dco_dith0_tune_2_0 = 0;
+ u32 dco_dith1_tune_2_0 = 0;
+
+ dco_fine0_tune_2_0 = dco_12g ? 4 : 3;
+ dco_fine1_tune_2_0 = 2;
+ dco_fine2_tune_2_0 = dco_12g ? 2 : 1;
+ dco_fine3_tune_2_0 = 5;
+ dco_dith0_tune_2_0 = dco_12g ? 4 : 3;
+ dco_dith1_tune_2_0 = 2;
+
+ p->dco_fine.val = (dco_dith1_tune_2_0 << 19) +
+ (dco_dith0_tune_2_0 << 16) +
+ (dco_fine3_tune_2_0 << 11) +
+ (dco_fine2_tune_2_0 << 8) +
+ (dco_fine1_tune_2_0 << 3) +
+ dco_fine0_tune_2_0;
+}
+
+int
+intel_lt_phy_calculate_hdmi_state(struct intel_lt_phy_pll_state *lt_state,
+ u32 frequency_khz)
+{
+#define DATA_ASSIGN(i, pll_reg) \
+ do { \
+ lt_state->data[i][0] = (u8)((((pll_reg).val) & 0xFF000000) >> 24); \
+ lt_state->data[i][1] = (u8)((((pll_reg).val) & 0x00FF0000) >> 16); \
+ lt_state->data[i][2] = (u8)((((pll_reg).val) & 0x0000FF00) >> 8); \
+ lt_state->data[i][3] = (u8)((((pll_reg).val) & 0x000000FF)); \
+ } while (0)
+#define ADDR_ASSIGN(i, pll_reg) \
+ do { \
+ lt_state->addr_msb[i] = ((pll_reg).addr >> 8) & 0xFF; \
+ lt_state->addr_lsb[i] = (pll_reg).addr & 0xFF; \
+ } while (0)
+
+ bool found = false;
+ struct lt_phy_params p;
+ u32 dco_fmin = DCO_MIN_FREQ_MHZ;
+ u64 refclk_khz = REF_CLK_KHZ;
+ u32 refclk_mhz_int = REF_CLK_KHZ / 1000;
+ u64 m2div = 0;
+ u64 target_dco_mhz = 0;
+ u64 tdc_fine, tdc_targetcnt;
+ u64 feedfwd_gain ,feedfwd_cal_en;
+ u64 tdc_res = 30;
+ u32 prop_coeff;
+ u32 int_coeff;
+ u32 ndiv = 1;
+ u32 m1div = 1, m2div_int, m2div_frac;
+ u32 frac_en;
+ u32 ana_cfg;
+ u32 loop_cnt = 0;
+ u32 gain_ctrl = 2;
+ u32 postdiv = 0;
+ u32 dco_12g = 0;
+ u32 pll_type = 0;
+ u32 d1 = 2, d3 = 5, d4 = 0, d5 = 0;
+ u32 d6 = 0, d6_new = 0;
+ u32 d7, d8 = 0;
+ u32 bonus_7_0 = 0;
+ u32 csel2fo = 11;
+ u32 csel2fo_ovrd_en = 1;
+ u64 temp0, temp1, temp2, temp3;
+
+ p.surv_bonus.val = (bonus_7_0 << 16);
+ p.pll_reg4.val = (refclk_mhz_int << 17) +
+ (ndiv << 9) + (1 << 4);
+ p.bias_trim.val = (csel2fo_ovrd_en << 30) + (csel2fo << 24);
+ p.ssc_inj.val = 0;
+ found = calculate_target_dco_and_loop_cnt(frequency_khz, &target_dco_mhz, &loop_cnt);
+ if (!found)
+ return -EINVAL;
+
+ m2div = div64_u64(target_dco_mhz, (refclk_khz * ndiv * m1div));
+ m2div = mul_q32_u32(m2div, 1000);
+ if (Q32_TO_INT(m2div) > 511)
+ return -EINVAL;
+
+ m2div_int = (u32)Q32_TO_INT(m2div);
+ m2div_frac = (u32)(Q32_TO_FRAC(m2div));
+ frac_en = (m2div_frac > 0) ? 1 : 0;
+
+ if (frac_en > 0)
+ tdc_res = 70;
+ else
+ tdc_res = 36;
+ tdc_fine = tdc_res > 50 ? 1 : 0;
+ temp0 = tdc_res * 40 * 11;
+ temp1 = div64_u64(((4 * TDC_RES_MULTIPLIER) + temp0) * 500, temp0 * refclk_khz);
+ temp2 = div64_u64(temp0 * refclk_khz, 1000);
+ temp3 = div64_u64(((8 * TDC_RES_MULTIPLIER) + temp2), temp2);
+ tdc_targetcnt = tdc_res < 50 ? (int)(temp1) : (int)(temp3);
+ tdc_targetcnt = (int)(tdc_targetcnt / 2);
+ temp0 = mul_q32_u32(target_dco_mhz, tdc_res);
+ temp0 >>= 32;
+ feedfwd_gain = (m2div_frac > 0) ? div64_u64(m1div * TDC_RES_MULTIPLIER, temp0) : 0;
+ feedfwd_cal_en = frac_en;
+
+ temp0 = (u32)Q32_TO_INT(target_dco_mhz);
+ prop_coeff = (temp0 >= dco_fmin) ? 3 : 4;
+ int_coeff = (temp0 >= dco_fmin) ? 7 : 8;
+ ana_cfg = (temp0 >= dco_fmin) ? 8 : 6;
+ dco_12g = (temp0 >= dco_fmin) ? 0 : 1;
+
+ if (temp0 > 12960)
+ d7 = 10;
+ else
+ d7 = 8;
+
+ d8 = loop_cnt / 2;
+ d4 = d8 * 2;
+
+ /* Compute pll_reg3,5,57 & lf */
+ p.pll_reg3.val = (u32)((d4 << 21) + (d3 << 18) + (d1 << 15) + (m2div_int << 5));
+ p.pll_reg5.val = m2div_frac;
+ postdiv = (d5 == 0) ? 9 : d5;
+ d6_new = (d6 == 0) ? 40 : d6;
+ p.pll_reg57.val = (d7 << 24) + (postdiv << 15) + (d8 << 7) + d6_new;
+ p.lf.val = (u32)((frac_en << 31) + (1 << 30) + (frac_en << 29) +
+ (feedfwd_cal_en << 28) + (tdc_fine << 27) +
+ (gain_ctrl << 24) + (feedfwd_gain << 16) +
+ (int_coeff << 12) + (prop_coeff << 8) + tdc_targetcnt);
+
+ compute_ssc(&p, ana_cfg);
+ compute_bias2(&p);
+ compute_tdc(&p, tdc_fine);
+ compute_dco_med(&p);
+ compute_dco_fine(&p, dco_12g);
+
+ pll_type = ((frequency_khz == 10000) || (frequency_khz == 20000) ||
+ (frequency_khz == 2500) || (dco_12g == 1)) ? 0 : 1;
+ set_phy_vdr_addresses(&p, pll_type);
+
+ lt_state->config[0] = 0x84;
+ lt_state->config[1] = 0x2d;
+ ADDR_ASSIGN(0, p.pll_reg4);
+ ADDR_ASSIGN(1, p.pll_reg3);
+ ADDR_ASSIGN(2, p.pll_reg5);
+ ADDR_ASSIGN(3, p.pll_reg57);
+ ADDR_ASSIGN(4, p.lf);
+ ADDR_ASSIGN(5, p.tdc);
+ ADDR_ASSIGN(6, p.ssc);
+ ADDR_ASSIGN(7, p.bias2);
+ ADDR_ASSIGN(8, p.bias_trim);
+ ADDR_ASSIGN(9, p.dco_med);
+ ADDR_ASSIGN(10, p.dco_fine);
+ ADDR_ASSIGN(11, p.ssc_inj);
+ ADDR_ASSIGN(12, p.surv_bonus);
+ DATA_ASSIGN(0, p.pll_reg4);
+ DATA_ASSIGN(1, p.pll_reg3);
+ DATA_ASSIGN(2, p.pll_reg5);
+ DATA_ASSIGN(3, p.pll_reg57);
+ DATA_ASSIGN(4, p.lf);
+ DATA_ASSIGN(5, p.tdc);
+ DATA_ASSIGN(6, p.ssc);
+ DATA_ASSIGN(7, p.bias2);
+ DATA_ASSIGN(8, p.bias_trim);
+ DATA_ASSIGN(9, p.dco_med);
+ DATA_ASSIGN(10, p.dco_fine);
+ DATA_ASSIGN(11, p.ssc_inj);
+ DATA_ASSIGN(12, p.surv_bonus);
+
+ return 0;
+}
+
static int
intel_lt_phy_calc_hdmi_port_clock(const struct intel_lt_phy_pll_state *lt_state)
{
-#define REF_CLK_KHZ 38400
#define REGVAL(i) ( \
(lt_state->data[i][3]) | \
(lt_state->data[i][2] << 8) | \
}
}
- /* TODO: Add a function to compute the data for HDMI TMDS*/
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+ return intel_lt_phy_calculate_hdmi_state(&crtc_state->dpll_hw_state.ltpll,
+ crtc_state->port_clock);
+ }
return -EINVAL;
}
projects / thirdparty / kernel / linux.git / commitdiff
