@@ -621,6 +621,8 @@ static inline uint32_t DSI_VERSION_MAJOR(uint32_t val)
return ((val) << DSI_VERSION_MAJOR__SHIFT) & DSI_VERSION_MAJOR__MASK;
}
+#define REG_DSI_CPHY_MODE_CTRL 0x000002d4
+
#define REG_DSI_PHY_PLL_CTRL_0 0x00000200
#define DSI_PHY_PLL_CTRL_0_ENABLE 0x00000001
@@ -27,6 +27,7 @@
#include "dsi_cfg.h"
#include "msm_kms.h"
#include "msm_gem.h"
+#include "phy/dsi_phy.h"
#define DSI_RESET_TOGGLE_DELAY_MS 20
@@ -170,6 +171,9 @@ struct msm_dsi_host {
int dlane_swap;
int num_data_lanes;
+ /* from phy DT */
+ bool cphy_mode;
+
u32 dma_cmd_ctrl_restore;
bool registered;
@@ -513,6 +517,7 @@ int msm_dsi_runtime_resume(struct device *dev)
int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host)
{
+ u32 byte_intf_rate;
int ret;
DBG("Set clk rates: pclk=%d, byteclk=%d",
@@ -532,8 +537,13 @@ int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host)
}
if (msm_host->byte_intf_clk) {
- ret = clk_set_rate(msm_host->byte_intf_clk,
- msm_host->byte_clk_rate / 2);
+ /* For CPHY, byte_intf_clk is same as byte_clk */
+ if (msm_host->cphy_mode)
+ byte_intf_rate = msm_host->byte_clk_rate;
+ else
+ byte_intf_rate = msm_host->byte_clk_rate / 2;
+
+ ret = clk_set_rate(msm_host->byte_intf_clk, byte_intf_rate);
if (ret) {
pr_err("%s: Failed to set rate byte intf clk, %d\n",
__func__, ret);
@@ -721,7 +731,11 @@ static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_dual_dsi)
lanes = 1;
}
- do_div(pclk_bpp, (8 * lanes));
+ /* CPHY "byte_clk" is in units of 16 bits */
+ if (msm_host->cphy_mode)
+ do_div(pclk_bpp, (16 * lanes));
+ else
+ do_div(pclk_bpp, (8 * lanes));
msm_host->pixel_clk_rate = pclk_rate;
msm_host->byte_clk_rate = pclk_bpp;
@@ -947,6 +961,9 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
data |= DSI_CTRL_ENABLE;
dsi_write(msm_host, REG_DSI_CTRL, data);
+
+ if (msm_host->cphy_mode)
+ dsi_write(msm_host, REG_DSI_CPHY_MODE_CTRL, BIT(0));
}
static void dsi_set_video_dsc(struct msm_dsi_host *msm_host,
@@ -2278,6 +2295,8 @@ int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
struct clk *byte_clk_provider, *pixel_clk_provider;
int ret;
+ msm_host->cphy_mode = src_phy->cphy_mode;
+
ret = msm_dsi_phy_get_clk_provider(src_phy,
&byte_clk_provider, &pixel_clk_provider);
if (ret) {
@@ -2349,7 +2368,14 @@ void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
return;
}
- clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
+ /* CPHY transmits 16 bits over 7 clock cycles
+ * "byte_clk" is in units of 16-bits (see dsi_calc_pclk),
+ * so multiply by 7 to get the "bitclk rate"
+ */
+ if (msm_host->cphy_mode)
+ clk_req->bitclk_rate = msm_host->byte_clk_rate * 7;
+ else
+ clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
clk_req->escclk_rate = msm_host->esc_clk_rate;
}
@@ -5,6 +5,7 @@
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
+#include <dt-bindings/phy/phy.h>
#include "dsi_phy.h"
@@ -461,6 +462,51 @@ int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
return 0;
}
+int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
+ struct msm_dsi_phy_clk_request *clk_req)
+{
+ const unsigned long bit_rate = clk_req->bitclk_rate;
+ const unsigned long esc_rate = clk_req->escclk_rate;
+ s32 ui, ui_x7;
+ s32 tmax, tmin;
+ s32 coeff = 1000; /* Precision, should avoid overflow */
+ s32 temp;
+
+ if (!bit_rate || !esc_rate)
+ return -EINVAL;
+
+ ui = mult_frac(NSEC_PER_MSEC, coeff, bit_rate / 1000);
+ ui_x7 = ui * 7;
+
+ temp = S_DIV_ROUND_UP(38 * coeff, ui_x7);
+ tmin = max_t(s32, temp, 0);
+ temp = (95 * coeff) / ui_x7;
+ tmax = max_t(s32, temp, 0);
+ timing->clk_prepare = linear_inter(tmax, tmin, 50, 0, false);
+
+ tmin = DIV_ROUND_UP(50 * coeff, ui_x7);
+ tmax = 255;
+ timing->hs_rqst = linear_inter(tmax, tmin, 1, 0, false);
+
+ tmin = DIV_ROUND_UP(100 * coeff, ui_x7) - 1;
+ tmax = 255;
+ timing->hs_exit = linear_inter(tmax, tmin, 10, 0, false);
+
+ tmin = 1;
+ tmax = 32;
+ timing->shared_timings.clk_post = linear_inter(tmax, tmin, 80, 0, false);
+
+ tmin = min_t(s32, 64, S_DIV_ROUND_UP(262 * coeff, ui_x7) - 1);
+ tmax = 64;
+ timing->shared_timings.clk_pre = linear_inter(tmax, tmin, 20, 0, false);
+
+ DBG("%d, %d, %d, %d, %d",
+ timing->shared_timings.clk_pre, timing->shared_timings.clk_post,
+ timing->clk_prepare, timing->hs_exit, timing->hs_rqst);
+
+ return 0;
+}
+
static int dsi_phy_regulator_init(struct msm_dsi_phy *phy)
{
struct regulator_bulk_data *s = phy->supplies;
@@ -626,6 +672,7 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
struct msm_dsi_phy *phy;
struct device *dev = &pdev->dev;
const struct of_device_id *match;
+ u32 phy_type;
int ret;
phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
@@ -657,6 +704,8 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
phy->regulator_ldo_mode = of_property_read_bool(dev->of_node,
"qcom,dsi-phy-regulator-ldo-mode");
+ if (!of_property_read_u32(dev->of_node, "phy-type", &phy_type))
+ phy->cphy_mode = (phy_type == PHY_TYPE_CPHY);
phy->base = msm_ioremap_size(pdev, "dsi_phy", "DSI_PHY", &phy->base_size);
if (IS_ERR(phy->base)) {
@@ -99,6 +99,7 @@ struct msm_dsi_phy {
enum msm_dsi_phy_usecase usecase;
bool regulator_ldo_mode;
+ bool cphy_mode;
struct clk_hw *vco_hw;
bool pll_on;
@@ -119,5 +120,7 @@ int msm_dsi_dphy_timing_calc_v3(struct msm_dsi_dphy_timing *timing,
struct msm_dsi_phy_clk_request *clk_req);
int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
struct msm_dsi_phy_clk_request *clk_req);
+int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
+ struct msm_dsi_phy_clk_request *clk_req);
#endif /* __DSI_PHY_H__ */
@@ -255,7 +255,7 @@ static void dsi_pll_commit(struct dsi_pll_7nm *pll, struct dsi_pll_config *confi
(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_CMODE_1, pll->phy->cphy_mode ? 0x00 : 0x10);
dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_CLOCK_INVERTERS, config->pll_clock_inverters);
}
@@ -640,7 +640,8 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
/* DSI Byte clock = VCO_CLK / OUT_DIV / BIT_DIV / 8 */
hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent,
- CLK_SET_RATE_PARENT, 1, 8);
+ CLK_SET_RATE_PARENT, 1,
+ pll_7nm->phy->cphy_mode ? 7 : 8);
if (IS_ERR(hw)) {
ret = PTR_ERR(hw);
goto fail;
@@ -661,32 +662,47 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
snprintf(clk_name, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);
- hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent,
- 0, 1, 4);
+ if (pll_7nm->phy->cphy_mode)
+ hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 2, 7);
+ else
+ hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 1, 4);
if (IS_ERR(hw)) {
ret = PTR_ERR(hw);
goto fail;
}
- snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
- snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);
- snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->phy->id);
- snprintf(parent3, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);
- snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
-
- hw = devm_clk_hw_register_mux(dev, clk_name,
- ((const char *[]){
- parent, parent2, parent3, parent4
- }), 4, 0, pll_7nm->phy->base +
- REG_DSI_7nm_PHY_CMN_CLK_CFG1,
- 0, 2, 0, NULL);
- if (IS_ERR(hw)) {
- ret = PTR_ERR(hw);
- goto fail;
+ /* in CPHY mode, pclk_mux will always have post_out_div as parent
+ * don't register a pclk_mux clock and just use post_out_div instead
+ */
+ if (pll_7nm->phy->cphy_mode) {
+ u32 data;
+
+ data = dsi_phy_read(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1);
+ dsi_phy_write(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1, data | 3);
+
+ snprintf(parent, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
+ } else {
+ snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
+ snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);
+ snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->phy->id);
+ snprintf(parent3, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);
+ snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
+
+ hw = devm_clk_hw_register_mux(dev, clk_name,
+ ((const char *[]){
+ parent, parent2, parent3, parent4
+ }), 4, 0, pll_7nm->phy->base +
+ REG_DSI_7nm_PHY_CMN_CLK_CFG1,
+ 0, 2, 0, NULL);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto fail;
+ }
+
+ snprintf(parent, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
}
snprintf(clk_name, 32, "dsi%d_phy_pll_out_dsiclk", pll_7nm->phy->id);
- snprintf(parent, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
/* PIX CLK DIV : DIV_CTRL_7_4*/
hw = devm_clk_hw_register_divider(dev, clk_name, parent,
@@ -811,15 +827,21 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
struct msm_dsi_dphy_timing *timing = &phy->timing;
void __iomem *base = phy->base;
bool less_than_1500_mhz;
- u32 vreg_ctrl_0, glbl_str_swi_cal_sel_ctrl, glbl_hstx_str_ctrl_0;
+ u32 vreg_ctrl_0, vreg_ctrl_1, lane_ctrl0;
+ u32 glbl_pemph_ctrl_0;
+ u32 glbl_str_swi_cal_sel_ctrl, glbl_hstx_str_ctrl_0;
u32 glbl_rescode_top_ctrl, glbl_rescode_bot_ctrl;
u32 data;
DBG("");
- if (msm_dsi_dphy_timing_calc_v4(timing, clk_req)) {
+ if (phy->cphy_mode)
+ ret = msm_dsi_cphy_timing_calc_v4(timing, clk_req);
+ else
+ ret = msm_dsi_dphy_timing_calc_v4(timing, clk_req);
+ if (ret) {
DRM_DEV_ERROR(&phy->pdev->dev,
- "%s: D-PHY timing calculation failed\n", __func__);
+ "%s: PHY timing calculation failed\n", __func__);
return -EINVAL;
}
@@ -840,6 +862,10 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
/* Alter PHY configurations if data rate less than 1.5GHZ*/
less_than_1500_mhz = (clk_req->bitclk_rate <= 1500000000);
+ /* For C-PHY, no low power settings for lower clk rate */
+ if (phy->cphy_mode)
+ less_than_1500_mhz = false;
+
if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x00;
@@ -854,6 +880,17 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
glbl_rescode_bot_ctrl = 0x3c;
}
+ if (phy->cphy_mode) {
+ vreg_ctrl_0 = 0x51;
+ vreg_ctrl_1 = 0x55;
+ glbl_pemph_ctrl_0 = 0x11;
+ lane_ctrl0 = 0x17;
+ } else {
+ vreg_ctrl_1 = 0x5c;
+ glbl_pemph_ctrl_0 = 0x00;
+ lane_ctrl0 = 0x1f;
+ }
+
/* de-assert digital and pll power down */
data = BIT(6) | BIT(5);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, data);
@@ -874,15 +911,22 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CFG0, 0x21);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CFG1, 0x84);
+ if (phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_CTRL, BIT(6));
+
/* Enable LDO */
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_0, vreg_ctrl_0);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_1, 0x5c);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_1, vreg_ctrl_1);
+
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_3, 0x00);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_STR_SWI_CAL_SEL_CTRL,
glbl_str_swi_cal_sel_ctrl);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_HSTX_STR_CTRL_0,
glbl_hstx_str_ctrl_0);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_0,
+ glbl_pemph_ctrl_0);
+ if (phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_1, 0x01);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_RESCODE_OFFSET_TOP_CTRL,
glbl_rescode_top_ctrl);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_RESCODE_OFFSET_BOT_CTRL,
@@ -892,10 +936,11 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
/* Remove power down from all blocks */
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, 0x7f);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL0, 0x1f);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL0, lane_ctrl0);
/* Select full-rate mode */
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_2, 0x40);
+ if (!phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_2, 0x40);
ret = dsi_7nm_set_usecase(phy);
if (ret) {
@@ -905,22 +950,36 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
}
/* DSI PHY timings */
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_1, timing->clk_zero);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_2, timing->clk_prepare);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_3, timing->clk_trail);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5, timing->hs_zero);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->hs_prepare);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7, timing->hs_trail);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_12,
- timing->shared_timings.clk_pre);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_13,
- timing->shared_timings.clk_post);
+ if (phy->cphy_mode) {
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5,
+ timing->shared_timings.clk_pre);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->clk_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7,
+ timing->shared_timings.clk_post);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
+ } else {
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_1, timing->clk_zero);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_2, timing->clk_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_3, timing->clk_trail);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5, timing->hs_zero);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->hs_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7, timing->hs_trail);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_12,
+ timing->shared_timings.clk_pre);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_13,
+ timing->shared_timings.clk_post);
+ }
/* DSI lane settings */
dsi_phy_hw_v4_0_lane_settings(phy);