[PATCH RFC 5/8] drm: hisilicon: fill interface function of encoder\connector part
From: Xinwei Kong
Date: Tue Sep 15 2015 - 05:42:48 EST
This patch enables the adv7533 module which is connecting hisilicon SOC
by dsi module. while using DSI module and adv7533 module to implement the
encoder/connector interface of DRM\KMS.
Signed-off-by: Xinliang Liu <xinliang.liu@xxxxxxxxxx>
Signed-off-by: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx>
Signed-off-by: Andy Green <andy.green@xxxxxxxxxx>
Signed-off-by: Jiwen Qi <qijiwen@xxxxxxxxxxxxx>
Signed-off-by: Yu Gong <gongyu@xxxxxxxxxxxxx>
---
drivers/gpu/drm/hisilicon/Kconfig | 10 +
drivers/gpu/drm/hisilicon/hisi_drm_connector.c | 34 ++
drivers/gpu/drm/hisilicon/hisi_drm_connector.h | 8 +
drivers/gpu/drm/hisilicon/hisi_drm_dsi.c | 670 +++++++++++++++++++++++++
drivers/gpu/drm/hisilicon/hisi_drm_encoder.c | 52 ++
drivers/gpu/drm/hisilicon/hisi_drm_encoder.h | 19 +
drivers/gpu/drm/hisilicon/hisi_dsi_reg.h | 91 ++++
7 files changed, 884 insertions(+)
create mode 100644 drivers/gpu/drm/hisilicon/hisi_dsi_reg.h
diff --git a/drivers/gpu/drm/hisilicon/Kconfig b/drivers/gpu/drm/hisilicon/Kconfig
index 60b42e4..105dbcb 100644
--- a/drivers/gpu/drm/hisilicon/Kconfig
+++ b/drivers/gpu/drm/hisilicon/Kconfig
@@ -7,3 +7,13 @@ config DRM_HISI
Choose this option if you have a hisilicon terminal chipset.
If M is selected the module will be called hisi-drm.
+if DRM_HISI
+
+config DRM_HISI_HAS_SLAVE_ENCODER
+ bool "Support slave encoder output"
+ default y
+ help
+ Support slave encoder output device such as DSI interface connecting
+ HDMI converter by i2c.
+
+endif
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_connector.c b/drivers/gpu/drm/hisilicon/hisi_drm_connector.c
index 62efdc7..57ab2e8 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_connector.c
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_connector.c
@@ -23,8 +23,21 @@
int hisi_drm_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ struct hisi_connector *hconnector = to_hisi_connector(connector);
+ struct drm_encoder *encoder = hconnector->encoder;
+ struct hisi_connector_funcs *ops = hconnector->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
int ret = MODE_OK;
+ if (ops->modes_valid)
+ ops->modes_valid(connector);
+
+ if (sfuncs && sfuncs->mode_valid) {
+ ret = sfuncs->mode_valid(encoder, mode);
+ if (ret != MODE_OK)
+ return ret;
+ }
+
return ret;
}
@@ -39,8 +52,19 @@ hisi_drm_best_encoder(struct drm_connector *connector)
int hisi_drm_get_modes(struct drm_connector *connector)
{
+ struct hisi_connector *hconnector = to_hisi_connector(connector);
+ struct hisi_connector_funcs *ops = hconnector->ops;
+ struct drm_encoder *encoder = hconnector->encoder;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
int count = 0;
+ if (ops->get_modes) {
+ count += ops->get_modes(connector);
+ } else {
+ if (sfuncs && sfuncs->get_modes)
+ count += sfuncs->get_modes(encoder, connector);
+ }
+
return count;
}
@@ -59,8 +83,18 @@ void hisi_drm_connector_destroy(struct drm_connector *connector)
enum drm_connector_status
hisi_drm_detect(struct drm_connector *connector, bool force)
{
+ struct hisi_connector *hconnector = to_hisi_connector(connector);
+ struct drm_encoder *encoder = hconnector->encoder;
+ struct hisi_connector_funcs *ops = hconnector->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
enum drm_connector_status status = connector_status_unknown;
+ if (ops->detect)
+ ops->detect(connector);
+
+ if (sfuncs && sfuncs->detect)
+ status = sfuncs->detect(encoder, connector);
+
return status;
}
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_connector.h b/drivers/gpu/drm/hisilicon/hisi_drm_connector.h
index 114391c..a8b8409 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_connector.h
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_connector.h
@@ -13,9 +13,17 @@
#ifndef __HISI_DRM_CONNECTOR_H__
#define __HISI_DRM_CONNECTOR_H__
+struct hisi_connector_funcs {
+ enum drm_connector_status
+ (*detect) (struct drm_connector *connector);
+ int (*get_modes)(struct drm_connector *connector);
+ int (*modes_valid)(struct drm_connector *connector);
+};
+
struct hisi_connector {
struct drm_connector connector;
struct drm_encoder *encoder;
+ void *ops;
};
void hisi_drm_connector_init(struct drm_device *dev,
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c
index 046fd8e..8509ced 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c
@@ -12,18 +12,72 @@
#include <linux/clk.h>
#include <linux/component.h>
+#include <video/videomode.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_encoder_slave.h>
#include "hisi_drm_encoder.h"
#include "hisi_drm_connector.h"
+#include "hisi_dsi_reg.h"
+#define encoder_to_dsi(encoder) \
+ container_of(encoder, struct hisi_dsi, hisi_encoder.base.base)
+
+#define MAX_TX_ESC_CLK (10)
#define DSI_24BITS_1 (5)
+#define DSI_NON_BURST_SYNC_PULSES (0)
+#define DSI_BURST_MODE DSI_NON_BURST_SYNC_PULSES
+
+#define ROUND(x, y) ((x) / (y) + ((x) % (y) * 10 / (y) >= 5 ? 1 : 0))
+
+#define DEFAULT_MIPI_CLK_RATE 19200000
+#define DEFAULT_MIPI_CLK_PERIOD_PS (1000000000 / (DEFAULT_MIPI_CLK_RATE / 1000))
+
+#define R(x) ((u32)((((u64)(x) * (u64)1000 * (u64)dsi->vm.pixelclock) / \
+ phy->lane_byte_clk_kHz)))
+
+struct mipi_phy_register {
+ u32 clk_t_lpx;
+ u32 clk_t_hs_prepare;
+ u32 clk_t_hs_zero;
+ u32 clk_t_hs_trial;
+ u32 clk_t_wakeup;
+ u32 data_t_lpx;
+ u32 data_t_hs_prepare;
+ u32 data_t_hs_zero;
+ u32 data_t_hs_trial;
+ u32 data_t_ta_go;
+ u32 data_t_ta_get;
+ u32 data_t_wakeup;
+ u32 hstx_ckg_sel;
+ u32 pll_fbd_div5f;
+ u32 pll_fbd_div1f;
+ u32 pll_fbd_2p;
+ u32 pll_enbwt;
+ u32 pll_fbd_p;
+ u32 pll_fbd_s;
+ u32 pll_pre_div1p;
+ u32 pll_pre_p;
+ u32 pll_vco_750M;
+ u32 pll_lpf_rs;
+ u32 pll_lpf_cs;
+ u32 clklp2hs_time;
+ u32 clkhs2lp_time;
+ u32 lp2hs_time;
+ u32 hs2lp_time;
+ u32 clk_to_data_delay;
+ u32 data_to_clk_delay;
+ u32 lane_byte_clk_kHz;
+ u32 clk_division;
+ u32 burst_mode;
+};
struct hisi_dsi {
struct hisi_encoder hisi_encoder;
struct hisi_connector hisi_connector;
+ struct mipi_phy_register phy;
+ struct videomode vm;
u32 lanes;
u32 format;
@@ -35,6 +89,10 @@ struct hisi_dsi {
struct hisi_dsi_context {
struct hisi_dsi dsi;
+#ifdef CONFIG_DRM_HISI_HAS_SLAVE_ENCODER
+ struct i2c_client *client;
+ struct drm_i2c_encoder_driver *drm_i2c_driver;
+#endif
struct clk *dsi_cfg_clk;
struct drm_device *dev;
@@ -42,6 +100,578 @@ struct hisi_dsi_context {
int nominal_pixel_clk_kHz;
};
+struct dsi_phy_seq_info {
+ u32 min_range_kHz;
+ u32 max_range_kHz;
+ u32 pll_vco_750M;
+ u32 hstx_ckg_sel;
+};
+
+struct dsi_phy_seq_info dphy_seq_info[] = {
+ { 46000, 62000, 1, 7 },
+ { 62000, 93000, 0, 7 },
+ { 93000, 125000, 1, 6 },
+ { 125000, 187000, 0, 6 },
+ { 187000, 250000, 1, 5 },
+ { 250000, 375000, 0, 5 },
+ { 375000, 500000, 1, 4 },
+ { 500000, 750000, 0, 4 },
+ { 750000, 1000000, 1, 0 },
+ { 1000000, 1500000, 0, 0 }
+};
+
+void set_dsi_phy_rate_equal_or_faster(u32 *phy_freq_kHz,
+ struct mipi_phy_register *phy)
+{
+ u32 ui = 0;
+ u32 cfg_clk_ps = DEFAULT_MIPI_CLK_PERIOD_PS;
+ u32 i = 0;
+ u32 q_pll = 1;
+ u32 m_pll = 0;
+ u32 n_pll = 0;
+ u32 r_pll = 1;
+ u32 m_n = 0;
+ u32 m_n_int = 0;
+ u64 f_kHz;
+ u64 temp;
+
+ do {
+ f_kHz = *phy_freq_kHz;
+
+ /* Find the PLL clock range from the table */
+ for (i = 0; i < ARRAY_SIZE(dphy_seq_info); i++)
+ if (f_kHz > dphy_seq_info[i].min_range_kHz &&
+ f_kHz <= dphy_seq_info[i].max_range_kHz)
+ break;
+
+ if (i == ARRAY_SIZE(dphy_seq_info)) {
+ DRM_ERROR("%lldkHz out of range\n", f_kHz);
+ return;
+ }
+
+ phy->pll_vco_750M = dphy_seq_info[i].pll_vco_750M;
+ phy->hstx_ckg_sel = dphy_seq_info[i].hstx_ckg_sel;
+
+ if (phy->hstx_ckg_sel <= 7 &&
+ phy->hstx_ckg_sel >= 4)
+ q_pll = 0x10 >> (7 - phy->hstx_ckg_sel);
+
+ temp = f_kHz * (u64)q_pll * (u64)cfg_clk_ps;
+ m_n_int = temp / (u64)1000000000;
+ m_n = (temp % (u64)1000000000) / (u64)100000000;
+
+ if (m_n_int % 2 == 0) {
+ if (m_n * 6 >= 50) {
+ n_pll = 2;
+ m_pll = (m_n_int + 1) * n_pll;
+ } else if (m_n * 6 >= 30) {
+ n_pll = 3;
+ m_pll = m_n_int * n_pll + 2;
+ } else {
+ n_pll = 1;
+ m_pll = m_n_int * n_pll;
+ }
+ } else {
+ if (m_n * 6 >= 50) {
+ n_pll = 1;
+ m_pll = (m_n_int + 1) * n_pll;
+ } else if (m_n * 6 >= 30) {
+ n_pll = 1;
+ m_pll = (m_n_int + 1) * n_pll;
+ } else if (m_n * 6 >= 10) {
+ n_pll = 3;
+ m_pll = m_n_int * n_pll + 1;
+ } else {
+ n_pll = 2;
+ m_pll = m_n_int * n_pll;
+ }
+ }
+
+ if (n_pll == 1) {
+ phy->pll_fbd_p = 0;
+ phy->pll_pre_div1p = 1;
+ } else {
+ phy->pll_fbd_p = n_pll;
+ phy->pll_pre_div1p = 0;
+ }
+
+ if (phy->pll_fbd_2p <= 7 && phy->pll_fbd_2p >= 4)
+ r_pll = 0x10 >> (7 - phy->pll_fbd_2p);
+
+ if (m_pll == 2) {
+ phy->pll_pre_p = 0;
+ phy->pll_fbd_s = 0;
+ phy->pll_fbd_div1f = 0;
+ phy->pll_fbd_div5f = 1;
+ } else if (m_pll >= 2 * 2 * r_pll && m_pll <= 2 * 4 * r_pll) {
+ phy->pll_pre_p = m_pll / (2 * r_pll);
+ phy->pll_fbd_s = 0;
+ phy->pll_fbd_div1f = 1;
+ phy->pll_fbd_div5f = 0;
+ } else if (m_pll >= 2 * 5 * r_pll && m_pll <= 2 * 150 * r_pll) {
+ if (((m_pll / (2 * r_pll)) % 2) == 0) {
+ phy->pll_pre_p =
+ (m_pll / (2 * r_pll)) / 2 - 1;
+ phy->pll_fbd_s =
+ (m_pll / (2 * r_pll)) % 2 + 2;
+ } else {
+ phy->pll_pre_p =
+ (m_pll / (2 * r_pll)) / 2;
+ phy->pll_fbd_s =
+ (m_pll / (2 * r_pll)) % 2;
+ }
+ phy->pll_fbd_div1f = 0;
+ phy->pll_fbd_div5f = 0;
+ } else {
+ phy->pll_pre_p = 0;
+ phy->pll_fbd_s = 0;
+ phy->pll_fbd_div1f = 0;
+ phy->pll_fbd_div5f = 1;
+ }
+
+ f_kHz = (u64)1000000000 * (u64)m_pll /
+ ((u64)cfg_clk_ps * (u64)n_pll * (u64)q_pll);
+
+ if (f_kHz >= *phy_freq_kHz)
+ break;
+
+ (*phy_freq_kHz) += 10;
+
+ } while (1);
+
+ *phy_freq_kHz = f_kHz;
+ ui = 1000000 / f_kHz;
+
+ phy->clk_t_lpx = ROUND(50, 8 * ui);
+ phy->clk_t_hs_prepare = ROUND(133, 16 * ui) - 1;
+
+ phy->clk_t_hs_zero = ROUND(262, 8 * ui);
+ phy->clk_t_hs_trial = 2 * (ROUND(60, 8 * ui) - 1);
+ phy->clk_t_wakeup = ROUND(1000000, (cfg_clk_ps / 1000) - 1);
+ if (phy->clk_t_wakeup > 0xff)
+ phy->clk_t_wakeup = 0xff;
+ phy->data_t_wakeup = phy->clk_t_wakeup;
+ phy->data_t_lpx = phy->clk_t_lpx;
+ phy->data_t_hs_prepare = ROUND(125 + 10 * ui, 16 * ui) - 1;
+ phy->data_t_hs_zero = ROUND(105 + 6 * ui, 8 * ui);
+ phy->data_t_hs_trial = 2 * (ROUND(60 + 4 * ui, 8 * ui) - 1);
+ phy->data_t_ta_go = 3;
+ phy->data_t_ta_get = 4;
+
+ phy->pll_enbwt = 1;
+ phy->clklp2hs_time = ROUND(407, 8 * ui) + 12;
+ phy->clkhs2lp_time = ROUND(105 + 12 * ui, 8 * ui);
+ phy->lp2hs_time = ROUND(240 + 12 * ui, 8 * ui) + 1;
+ phy->hs2lp_time = phy->clkhs2lp_time;
+ phy->clk_to_data_delay = 1 + phy->clklp2hs_time;
+ phy->data_to_clk_delay = ROUND(60 + 52 * ui, 8 * ui) +
+ phy->clkhs2lp_time;
+
+ phy->lane_byte_clk_kHz = f_kHz / 8;
+ phy->clk_division = phy->lane_byte_clk_kHz / MAX_TX_ESC_CLK;
+ if (phy->lane_byte_clk_kHz % MAX_TX_ESC_CLK)
+ phy->clk_division++;
+
+ phy->burst_mode = DSI_BURST_MODE;
+}
+
+int dsi_mipi_init(struct hisi_dsi *dsi)
+{
+ struct hisi_dsi_context *ctx = dsi->ctx;
+ struct mipi_phy_register *phy = &dsi->phy;
+ void __iomem *base = ctx->base;
+
+ u32 i = 0;
+ u32 hline_time = 0;
+ u32 hsa_time = 0;
+ u32 hbp_time = 0;
+ u32 pixel_clk_kHz;
+ u32 delay_count = 0;
+ int refresh_nom, refresh_real;
+ int htot, vtot, blc_hactive;
+ int tmp, tmp1, val;
+ bool is_ready = false;
+
+ /* reset Core */
+ writel(PWR_UP_OFF, base + PWR_UP);
+
+ /* set lanes value */
+ val = (dsi->lanes - 1);
+ val |= PHY_STOP_WAIT_TIME << 8;
+ writel(val, base + PHY_IF_CFG);
+
+ /* set phy clk division */
+ writel(phy->clk_division, base + CLKMGR_CFG);
+
+ /* clean up phy set param */
+ writel(0x00, base + PHY_RSTZ);
+ writel(0x00, base + PHY_TST_CTRL0);
+ writel(0x01, base + PHY_TST_CTRL0);
+ writel(0x00, base + PHY_TST_CTRL0);
+
+ /* clock lane Timing control - TLPX */
+ dsi_phy_tst_set(base, CLK_LPX_ADDR, phy->clk_t_lpx);
+
+ /* clock lane Timing control - THS-PREPARE */
+ dsi_phy_tst_set(base, CLK_HS_PRE_ADDR, phy->clk_t_hs_prepare);
+
+ /* clock lane Timing control - THS-ZERO */
+ dsi_phy_tst_set(base, CLK_HS_ZERO_ADDR, phy->clk_t_hs_zero);
+
+ /* clock lane Timing control - THS-TRAIL */
+ dsi_phy_tst_set(base, CLK_HS_TRIAL_ADDR, phy->clk_t_hs_trial);
+
+ /* clock lane Timing control - TWAKEUP */
+ dsi_phy_tst_set(base, CLK_WAKEUP_ADDR, phy->clk_t_wakeup);
+
+ /* data lane */
+ for (i = 0; i < dsi->lanes; i++) {
+ /* Timing control - TLPX*/
+ dsi_phy_tst_set(base, DATA_LPX_ADDR + (i << 4),
+ phy->data_t_lpx);
+
+ /* Timing control - THS-PREPARE */
+ dsi_phy_tst_set(base, DATA_HS_PRE_ADDR + (i << 4),
+ phy->data_t_hs_prepare);
+
+ /* Timing control - THS-ZERO */
+ dsi_phy_tst_set(base, DATA_HS_ZERO_ADDR + (i << 4),
+ phy->data_t_hs_zero);
+
+ /* Timing control - THS-TRAIL */
+ dsi_phy_tst_set(base, DATA_HS_TRIAL_ADDR + (i << 4),
+ phy->data_t_hs_trial);
+
+ /* Timing control - TTA-GO */
+ dsi_phy_tst_set(base, DATA_TA_GO_ADDR + (i << 4),
+ phy->data_t_ta_go);
+
+ /* Timing control - TTA-GET */
+ dsi_phy_tst_set(base, DATA_TA_GET_ADDR + (i << 4),
+ phy->data_t_ta_get);
+
+ /* Timing control - TWAKEUP */
+ dsi_phy_tst_set(base, DATA_WAKEUP_ADDR + (i << 4),
+ phy->data_t_wakeup);
+ }
+
+ /* physical configuration I */
+ dsi_phy_tst_set(base, HSTX_CKG_SEL_ADDR, phy->hstx_ckg_sel);
+
+ /* physical configuration pll II */
+ val = (phy->pll_fbd_div5f << 5) + (phy->pll_fbd_div1f << 4) +
+ (phy->pll_fbd_2p << 1) + phy->pll_enbwt;
+ dsi_phy_tst_set(base, PLL_FBD_DPN_ADDR, val);
+
+ /* physical configuration pll II */
+ dsi_phy_tst_set(base, PLL_FBD_P_ADDR, phy->pll_fbd_p);
+
+ /* physical configuration pll III */
+ dsi_phy_tst_set(base, PLL_FBD_S_ADDR, phy->pll_fbd_s);
+
+ /*physical configuration pll IV*/
+ val = (phy->pll_pre_div1p << 7) + phy->pll_pre_p;
+ dsi_phy_tst_set(base, PLL_PRA_DP_ADDR, val);
+
+ /*physical configuration pll V*/
+ val = (phy->pll_vco_750M << 4) + (phy->pll_lpf_rs << 2) +
+ phy->pll_lpf_cs + BIT(5);
+ dsi_phy_tst_set(base, PLL_LPF_VOF_ADDR, val);
+
+ writel(0x04, base + PHY_RSTZ);
+ udelay(1);
+
+ writel(0x05, base + PHY_RSTZ);
+ udelay(1);
+
+ writel(0x07, base + PHY_RSTZ);
+ usleep_range(1000, 1500);
+
+ while (1) {
+ val = readl(base + PHY_STATUS);
+ if ((0x01 & val) || delay_count > 100) {
+ is_ready = (delay_count < 100) ? true : false;
+ delay_count = 0;
+ break;
+ }
+
+ udelay(1);
+ ++delay_count;
+ }
+
+ if (!is_ready)
+ DRM_INFO("phylock is not ready.\n");
+
+ while (1) {
+ val = readl(base + PHY_STATUS);
+ if ((BIT(2) & val) || delay_count > 100) {
+ is_ready = (delay_count < 100) ? true : false;
+ break;
+ }
+
+ udelay(1);
+ ++delay_count;
+ }
+
+ if (!is_ready)
+ DRM_INFO("phystopstateclklane is not ready.\n");
+
+ /* DSI color mode setting */
+ writel(0, base + DPI_VCID);
+ writel(dsi->color_mode, base + DPI_COLOR_CODING);
+
+ /* DSI format and pol setting */
+ val = dsi->date_enable_pol;
+ val |= (dsi->vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ? 0 : 1) << 0x2;
+ val |= (dsi->vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ? 0 : 1) << 0x1;
+ writel(val, base + DPI_CFG_POL);
+
+ if (dsi->format == MIPI_DSI_FMT_RGB666)
+ writel(dsi->color_mode | BIT(9), base + DPI_COLOR_CODING);
+
+ /*
+ * The DSI IP accepts vertical timing using lines as normal,
+ * but horizontal timing is a mixture of pixel-clocks for the
+ * active region and byte-lane clocks for the blanking-related
+ * timings. hfp is specified as the total hline_time in byte-
+ * lane clocks minus hsa, hbp and active.
+ */
+
+ htot = dsi->vm.hactive + dsi->vm.hsync_len +
+ dsi->vm.hfront_porch + dsi->vm.hback_porch;
+ vtot = dsi->vm.vactive + dsi->vm.vsync_len +
+ dsi->vm.vfront_porch + dsi->vm.vback_porch;
+
+ pixel_clk_kHz = dsi->vm.pixelclock;
+
+ hsa_time = (dsi->vm.hsync_len * phy->lane_byte_clk_kHz) /
+ pixel_clk_kHz;
+ hbp_time = (dsi->vm.hback_porch * phy->lane_byte_clk_kHz) /
+ pixel_clk_kHz;
+ hline_time = (((u64)htot * (u64)phy->lane_byte_clk_kHz)) /
+ pixel_clk_kHz;
+ blc_hactive = (((u64)dsi->vm.hactive *
+ (u64)phy->lane_byte_clk_kHz)) / pixel_clk_kHz;
+
+ if ((R(hline_time) / 1000) > htot)
+ hline_time--;
+
+ if ((R(hline_time) / 1000) < htot)
+ hline_time++;
+
+ /* all specified in byte-lane clocks */
+ writel(hsa_time, base + VID_HSA_TIME);
+ writel(hbp_time, base + VID_HBP_TIME);
+ writel(hline_time, base + VID_HLINE_TIME);
+
+ if (dsi->vm.vsync_len > 15)
+ dsi->vm.vsync_len = 15;
+
+ writel(dsi->vm.vsync_len, base + VID_VSA_LINES);
+ writel(dsi->vm.vback_porch, base + VID_VBP_LINES);
+ writel(dsi->vm.vfront_porch, base + VID_VFP_LINES);
+ writel(dsi->vm.vactive, base + VID_VACTIVE_LINES);
+ writel(dsi->vm.hactive, base + VID_PKT_SIZE);
+
+ refresh_nom = ((u64)ctx->nominal_pixel_clk_kHz * 1000000) /
+ (htot * vtot);
+
+ tmp = 1000000000 / dsi->vm.pixelclock;
+ tmp1 = 1000000000 / phy->lane_byte_clk_kHz;
+
+ refresh_real = ((u64)dsi->vm.pixelclock * (u64)1000000000) /
+ ((u64)R(hline_time) * (u64)vtot);
+
+ if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
+ /*
+ * we disable this since it affects downstream
+ * DSI -> HDMI converter output
+ */
+ writel(0x00, base + VID_MODE_CFG);
+
+ /*VSA/VBP/VFP max transfer byte in LP mode*/
+ writel(0x00, base + DPI_LP_CMD_TIM);
+ /* enable LP command transfer */
+ writel(0x00, base + VID_MODE_CFG);
+ /* config max read time */
+ writel(PHY_MAX_TIME, base + PHY_TMR_CFG);
+ }
+
+ /* Configure core's phy parameters */
+ writel(0xFFF, base + BTA_TO_CNT);
+
+ val = 0xFF;
+ val |= (phy->lp2hs_time) << 16;
+ val |= (phy->hs2lp_time) << 24;
+ writel(val, base + PHY_TMR_CFG);
+
+ val = phy->clklp2hs_time;
+ val |= (phy->clkhs2lp_time) << 16;
+ writel(val, base + PHY_TMR_LPCLK_CFG);
+
+ /* setting burst mode */
+ val = phy->clk_to_data_delay;
+ val |= (phy->data_to_clk_delay) << 8;
+ writel(val, base + NO_CONTINUE);
+ writel(0x00, base + VID_MODE_CFG);
+ writel(phy->burst_mode, base + VID_MODE_CFG);
+ writel(0x0, base + LPCLK_CTRL);
+
+ /* for dsi read */
+ writel(0x0, base + PCKHDL_CFG);
+
+ /* Enable EOTP TX; Enable EDPI */
+ if (dsi->mode_flags == MIPI_DSI_MODE_VIDEO)
+ writel(dsi->vm.hactive, base + EDPI_CMD_SIZE);
+
+ /* DSI and D-PHY Initialization */
+ writel(VIDEO_MODE, base + MODE_CFG);
+ writel(0x1, base + LPCLK_CTRL);
+
+ writel(PWR_UP_ON, base + PWR_UP);
+
+ return 0;
+}
+
+static void dsi_encoder_disable(struct drm_encoder *encoder)
+{
+ struct hisi_dsi *dsi = encoder_to_dsi(encoder);
+ struct hisi_dsi_context *ctx = dsi->ctx;
+ void __iomem *base = ctx->base;
+
+ writel(PWR_UP_OFF, base + PWR_UP);
+ writel(0x00, base + LPCLK_CTRL);
+ writel(0x00, base + PHY_RSTZ);
+ clk_disable_unprepare(ctx->dsi_cfg_clk);
+}
+
+static void dsi_encoder_enable(struct drm_encoder *encoder)
+{
+ struct hisi_dsi *dsi = encoder_to_dsi(encoder);
+ struct hisi_dsi_context *ctx = dsi->ctx;
+ int ret;
+
+ /* mipi dphy clock enable */
+ ret = clk_prepare_enable(ctx->dsi_cfg_clk);
+ if (ret) {
+ DRM_ERROR("fail to enable dsi_cfg_clk: %d\n", ret);
+ return;
+ }
+
+ ret = dsi_mipi_init(dsi);
+ if (ret) {
+ DRM_ERROR("failed to init mipi: %d!\n", ret);
+ return;
+ }
+}
+
+void dsi_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct hisi_dsi *dsi = encoder_to_dsi(encoder);
+ struct hisi_dsi_context *ctx = dsi->ctx;
+ struct videomode *vm = &dsi->vm;
+ u32 dphy_freq_kHz;
+
+ vm->flags = 0;
+ vm->hactive = mode->hdisplay;
+ vm->vactive = mode->vdisplay;
+ vm->vfront_porch = mode->vsync_start - mode->vdisplay;
+ vm->vback_porch = mode->vtotal - mode->vsync_end;
+ vm->vsync_len = mode->vsync_end - mode->vsync_start;
+ vm->hfront_porch = mode->hsync_start - mode->hdisplay;
+ vm->hback_porch = mode->htotal - mode->hsync_end;
+ vm->hsync_len = mode->hsync_end - mode->hsync_start;
+
+ vm->pixelclock = adjusted_mode->clock;
+ ctx->nominal_pixel_clk_kHz = mode->clock;
+ dsi->lanes = 3 + !!(vm->pixelclock >= 115000);
+ dphy_freq_kHz = vm->pixelclock * 24 / dsi->lanes;
+
+ /* avoid a less-compatible DSI rate with 1.2GHz px PLL */
+ if (dphy_freq_kHz == 600000)
+ dphy_freq_kHz = 640000;
+
+ set_dsi_phy_rate_equal_or_faster(&dphy_freq_kHz, &dsi->phy);
+
+ if (mode->flags & DRM_MODE_FLAG_PHSYNC)
+ vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH;
+ else if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+ vm->flags |= DISPLAY_FLAGS_HSYNC_LOW;
+ if (mode->flags & DRM_MODE_FLAG_PVSYNC)
+ vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH;
+ else if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+ vm->flags |= DISPLAY_FLAGS_VSYNC_LOW;
+}
+
+static struct drm_display_mode mode_720p = {
+ .name = "1280x720",
+ .vrefresh = 60,
+ .clock = 74250,
+ .hdisplay = 1280,
+ .hsync_start = 1390,
+ .hsync_end = 1430,
+ .htotal = 1650,
+ .vdisplay = 720,
+ .vsync_start = 725,
+ .vsync_end = 730,
+ .vtotal = 750,
+ .type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER,
+ .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
+ .width_mm = 735,
+ .height_mm = 420,
+};
+
+/* 800x600@60 works well, so add to defaut modes */
+static struct drm_display_mode mode_800x600 = {
+ .name = "800x600",
+ .vrefresh = 60,
+ .clock = 40000,
+ .hdisplay = 800,
+ .hsync_start = 840,
+ .hsync_end = 968,
+ .htotal = 1056,
+ .vdisplay = 600,
+ .vsync_start = 601,
+ .vsync_end = 605,
+ .vtotal = 628,
+ .type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER,
+ .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
+ .width_mm = 735,
+ .height_mm = 420,
+};
+
+static int dsi_connector_get_modes(struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ /* 1280x720@60: 720P */
+ mode = drm_mode_duplicate(connector->dev, &mode_720p);
+ if (!mode)
+ DRM_ERROR("failed to create a new display mode\n");
+
+ drm_mode_probed_add(connector, mode);
+
+ /* 800x600@60 */
+ mode = drm_mode_duplicate(connector->dev, &mode_800x600);
+ if (!mode)
+ DRM_ERROR("failed to create a new display mode\n");
+ drm_mode_probed_add(connector, mode);
+
+ return 2;
+}
+
+struct hisi_connector_funcs hisi_dsi_connector_ops = {
+ .get_modes = dsi_connector_get_modes,
+};
+
+struct hisi_encoder_funcs hisi_dsi_encoder_ops = {
+ .mode_set = dsi_encoder_mode_set,
+ .enable = dsi_encoder_enable,
+ .disable = dsi_encoder_disable,
+};
+
static int hisi_dsi_bind(struct device *dev, struct device *master,
void *data)
{
@@ -52,8 +682,23 @@ static int hisi_dsi_bind(struct device *dev, struct device *master,
hisi_drm_encoder_init(ctx->dev, &ctx->dsi.hisi_encoder.base.base);
+#ifdef CONFIG_DRM_HISI_HAS_SLAVE_ENCODER
+ ret = ctx->drm_i2c_driver->encoder_init(ctx->client, ctx->dev,
+ &ctx->dsi.hisi_encoder.base);
+ if (ret) {
+ DRM_ERROR("fail to init drm i2c encoder\n");
+ return ret;
+ }
+
+ if (!ctx->dsi.hisi_encoder.base.slave_funcs) {
+ DRM_ERROR("failed check encoder function\n");
+ return -ENODEV;
+ }
+#endif
+
hisi_drm_connector_init(ctx->dev, &ctx->dsi.hisi_encoder.base.base,
&ctx->dsi.hisi_connector.connector);
+
return ret;
}
@@ -102,6 +747,27 @@ static int hisi_dsi_probe(struct platform_device *pdev)
return -EINVAL;
}
+#ifdef CONFIG_DRM_HISI_HAS_SLAVE_ENCODER
+ ctx->client = of_find_i2c_device_by_node(slave_node);
+ of_node_put(slave_node);
+ if (!ctx->client) {
+ DRM_ERROR("failed to find slave encoder i2c client\n");
+ return -EPROBE_DEFER;
+ }
+
+ if (!ctx->client->dev.driver) {
+ DRM_ERROR("%s: NULL client driver\n", __func__);
+ return -EPROBE_DEFER;
+ }
+
+ ctx->drm_i2c_driver = to_drm_i2c_encoder_driver(
+ to_i2c_driver(ctx->client->dev.driver));
+ if (IS_ERR(ctx->drm_i2c_driver)) {
+ DRM_ERROR("failed to initialize encoder driver");
+ return -EPROBE_DEFER;
+ }
+#endif
+
dsi = &ctx->dsi;
dsi->ctx = ctx;
dsi->lanes = 3;
@@ -110,6 +776,10 @@ static int hisi_dsi_probe(struct platform_device *pdev)
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+ dsi->hisi_encoder.ops = &hisi_dsi_encoder_ops;
+ dsi->hisi_connector.encoder = &dsi->hisi_encoder.base.base;
+ dsi->hisi_connector.ops = &hisi_dsi_connector_ops;
+
return component_add(&pdev->dev, &hisi_dsi_ops);
}
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_encoder.c b/drivers/gpu/drm/hisilicon/hisi_drm_encoder.c
index 89fc73d..acd73d8 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_encoder.c
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_encoder.c
@@ -15,18 +15,49 @@
#include "hisi_drm_encoder.h"
+#define to_hisi_encoder(encoder) \
+ container_of(encoder, struct hisi_encoder, base.base)
+
void hisi_drm_encoder_disable(struct drm_encoder *encoder)
{
+ struct hisi_encoder *hencoder = to_hisi_encoder(encoder);
+ struct hisi_encoder_funcs *ops = hencoder->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
+
+ if (ops->enable)
+ ops->disable(encoder);
+
+ if (sfuncs && sfuncs->dpms)
+ sfuncs->dpms(encoder, DRM_MODE_DPMS_OFF);
}
void hisi_drm_encoder_enable(struct drm_encoder *encoder)
{
+ struct hisi_encoder *hencoder = to_hisi_encoder(encoder);
+ struct hisi_encoder_funcs *ops = hencoder->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
+
+ if (ops->enable)
+ ops->enable(encoder);
+
+ if (sfuncs && sfuncs->dpms)
+ sfuncs->dpms(encoder, DRM_MODE_DPMS_ON);
}
void hisi_drm_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
+ struct hisi_encoder *hencoder = to_hisi_encoder(encoder);
+ struct hisi_encoder_funcs *ops = hencoder->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
+
+ if (ops->mode_set)
+ ops->mode_set(encoder, mode, adjusted_mode);
+
+ if (sfuncs && sfuncs->mode_set)
+ sfuncs->mode_set(encoder, mode, adjusted_mode);
+
}
bool
@@ -34,13 +65,34 @@ hisi_drm_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
+ struct hisi_encoder *hencoder = to_hisi_encoder(encoder);
+ struct hisi_encoder_funcs *ops = hencoder->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
bool ret = true;
+ if (ops->mode_fixup)
+ ops->mode_fixup(encoder, mode, adjusted_mode);
+
+ if (sfuncs && sfuncs->mode_fixup)
+ ret = sfuncs->mode_fixup(encoder, mode, adjusted_mode);
+
return ret;
}
void hisi_drm_encoder_destroy(struct drm_encoder *encoder)
{
+ struct hisi_encoder *hencoder = to_hisi_encoder(encoder);
+ struct hisi_encoder_funcs *ops = hencoder->ops;
+ struct drm_encoder_slave_funcs *sfuncs = get_slave_funcs(encoder);
+
+ if (ops->destroy)
+ ops->destroy(encoder);
+
+ /*release*/
+ if (sfuncs && sfuncs->destroy)
+ sfuncs->destroy(encoder);
+
+ drm_encoder_cleanup(encoder);
}
static struct drm_encoder_helper_funcs hisi_encoder_helper_funcs = {
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_encoder.h b/drivers/gpu/drm/hisilicon/hisi_drm_encoder.h
index 31c04e4..06e4e22 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_encoder.h
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_encoder.h
@@ -13,10 +13,29 @@
#ifndef __HISI_DRM_ENCODER_H__
#define __HISI_DRM_ENCODER_H__
+struct hisi_encoder_funcs {
+ void (*destroy)(struct drm_encoder *encoder);
+ bool (*mode_fixup)(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);
+ void (*mode_set)(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);
+ void (*enable)(struct drm_encoder *encoder);
+ void (*disable)(struct drm_encoder *encoder);
+};
+
struct hisi_encoder {
struct drm_encoder_slave base;
+ void *ops;
};
+static inline struct drm_encoder_slave_funcs *
+ get_slave_funcs(struct drm_encoder *enc)
+{
+ return to_encoder_slave(enc)->slave_funcs;
+}
+
void hisi_drm_encoder_init(struct drm_device *dev, struct drm_encoder *encoder);
#endif
diff --git a/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h b/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h
new file mode 100644
index 0000000..1ab949f
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h
@@ -0,0 +1,91 @@
+/*
+ * Hisilicon Terminal SoCs drm driver
+ *
+ * Copyright (c) 2014-2015 Hisilicon Limited.
+ * Author:
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#ifndef __HISI_DSI_REG_H__
+#define __HISI_DSI_REG_H__
+
+#define PWR_UP_ON (1)
+#define PWR_UP_OFF (0)
+#define COMMAND_MODE (1)
+#define VIDEO_MODE (0)
+#define PHY_MAX_TIME (0xFF)
+
+#define PWR_UP (0x4) /* Core power-up */
+#define PHY_IF_CFG (0xA4) /* D-PHY interface configuration */
+#define CLKMGR_CFG (0x8) /* the internal clock dividers */
+#define PHY_RSTZ (0xA0) /* D-PHY reset control */
+#define PHY_TST_CTRL0 (0xB4) /* D-PHY test interface control 0 */
+#define PHY_TST_CTRL1 (0xB8) /* D-PHY test interface control 1 */
+#define DPI_VCID (0xC) /* DPI virtual channel id */
+#define DPI_COLOR_CODING (0x10) /* DPI color coding */
+#define DPI_CFG_POL (0x14) /* DPI polarity configuration */
+#define VID_HSA_TIME (0x48) /* Horizontal Sync Active time */
+#define VID_HBP_TIME (0x4C) /* Horizontal Back Porch time */
+#define VID_HLINE_TIME (0x50) /* Line time */
+#define VID_VSA_LINES (0x54) /* Vertical Sync Active period */
+#define VID_VBP_LINES (0x58) /* Vertical Back Porch period */
+#define VID_VFP_LINES (0x5C) /* Vertical Front Porch period */
+#define VID_VACTIVE_LINES (0x60) /* Vertical resolution */
+#define VID_PKT_SIZE (0x3C) /* Video packet size */
+#define VID_MODE_CFG (0x38) /* Video mode configuration */
+#define DPI_LP_CMD_TIM (0x18) /* Low-power command timing config */
+#define PHY_TMR_CFG (0x9C) /* Data lanes timing configuration */
+#define BTA_TO_CNT (0x8C) /* Response timeout definition */
+#define PHY_TMR_LPCLK_CFG (0x98) /* clock lane timing configuration */
+#define NO_CONTINUE (0xCC)
+#define LPCLK_CTRL (0x94) /* Low-power in clock lane */
+#define PCKHDL_CFG (0x2C) /* Packet handler configuration */
+#define EDPI_CMD_SIZE (0x64) /* Size for eDPI packets */
+#define MODE_CFG (0x34) /* Video or Command mode selection */
+#define PHY_STATUS (0xB0) /* D-PHY PPI status interface */
+
+#define PHY_STOP_WAIT_TIME (0x30)
+#define CLK_LPX_ADDR (0x10010)
+#define CLK_HS_PRE_ADDR (0x10011)
+#define CLK_HS_ZERO_ADDR (0x10012)
+#define CLK_HS_TRIAL_ADDR (0x10013)
+#define CLK_WAKEUP_ADDR (0x10014)
+#define DATA_LPX_ADDR (0x10020)
+#define DATA_HS_PRE_ADDR (0x10021)
+#define DATA_HS_ZERO_ADDR (0x10022)
+#define DATA_HS_TRIAL_ADDR (0x10023)
+#define DATA_TA_GO_ADDR (0x10024)
+#define DATA_TA_GET_ADDR (0x10025)
+#define DATA_WAKEUP_ADDR (0x10026)
+#define HSTX_CKG_SEL_ADDR (0x10060)
+#define PLL_FBD_DPN_ADDR (0x10063)
+#define PLL_FBD_P_ADDR (0x10064)
+#define PLL_FBD_S_ADDR (0x10065)
+#define PLL_PRA_DP_ADDR (0x10066)
+#define PLL_LPF_VOF_ADDR (0x10067)
+
+static void dsi_phy_tst_set(void __iomem *base, u32 reg_addr,
+ u32 reg_data)
+{
+ writel(reg_addr, base + PHY_TST_CTRL1);
+ /* reg addr written at first */
+ wmb();
+ writel(0x02, base + PHY_TST_CTRL0);
+ /* cmd1 sent for write */
+ wmb();
+ writel(0x00, base + PHY_TST_CTRL0);
+ /* cmd2 sent for write */
+ wmb();
+ writel(reg_data, base + PHY_TST_CTRL1);
+ /* Then write data */
+ wmb();
+ writel(0x02, base + PHY_TST_CTRL0);
+ /* cmd2 sent for write */
+ wmb();
+ writel(0x00, base + PHY_TST_CTRL0);
+}
+
+#endif /* __HISI_DRM_DSI_H__ */
--
1.9.1
--
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