summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/gpu/drm/sti/sti_hqvdp.c
diff options
context:
space:
mode:
authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/sti/sti_hqvdp.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/sti/sti_hqvdp.c')
-rw-r--r--kernel/drivers/gpu/drm/sti/sti_hqvdp.c1073
1 files changed, 1073 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/sti/sti_hqvdp.c b/kernel/drivers/gpu/drm/sti/sti_hqvdp.c
new file mode 100644
index 000000000..b0eb62de1
--- /dev/null
+++ b/kernel/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -0,0 +1,1073 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include <drm/drmP.h>
+
+#include "sti_drm_plane.h"
+#include "sti_hqvdp.h"
+#include "sti_hqvdp_lut.h"
+#include "sti_layer.h"
+#include "sti_vtg.h"
+
+/* Firmware name */
+#define HQVDP_FMW_NAME "hqvdp-stih407.bin"
+
+/* Regs address */
+#define HQVDP_DMEM 0x00000000 /* 0x00000000 */
+#define HQVDP_PMEM 0x00040000 /* 0x00040000 */
+#define HQVDP_RD_PLUG 0x000E0000 /* 0x000E0000 */
+#define HQVDP_RD_PLUG_CONTROL (HQVDP_RD_PLUG + 0x1000) /* 0x000E1000 */
+#define HQVDP_RD_PLUG_PAGE_SIZE (HQVDP_RD_PLUG + 0x1004) /* 0x000E1004 */
+#define HQVDP_RD_PLUG_MIN_OPC (HQVDP_RD_PLUG + 0x1008) /* 0x000E1008 */
+#define HQVDP_RD_PLUG_MAX_OPC (HQVDP_RD_PLUG + 0x100C) /* 0x000E100C */
+#define HQVDP_RD_PLUG_MAX_CHK (HQVDP_RD_PLUG + 0x1010) /* 0x000E1010 */
+#define HQVDP_RD_PLUG_MAX_MSG (HQVDP_RD_PLUG + 0x1014) /* 0x000E1014 */
+#define HQVDP_RD_PLUG_MIN_SPACE (HQVDP_RD_PLUG + 0x1018) /* 0x000E1018 */
+#define HQVDP_WR_PLUG 0x000E2000 /* 0x000E2000 */
+#define HQVDP_WR_PLUG_CONTROL (HQVDP_WR_PLUG + 0x1000) /* 0x000E3000 */
+#define HQVDP_WR_PLUG_PAGE_SIZE (HQVDP_WR_PLUG + 0x1004) /* 0x000E3004 */
+#define HQVDP_WR_PLUG_MIN_OPC (HQVDP_WR_PLUG + 0x1008) /* 0x000E3008 */
+#define HQVDP_WR_PLUG_MAX_OPC (HQVDP_WR_PLUG + 0x100C) /* 0x000E300C */
+#define HQVDP_WR_PLUG_MAX_CHK (HQVDP_WR_PLUG + 0x1010) /* 0x000E3010 */
+#define HQVDP_WR_PLUG_MAX_MSG (HQVDP_WR_PLUG + 0x1014) /* 0x000E3014 */
+#define HQVDP_WR_PLUG_MIN_SPACE (HQVDP_WR_PLUG + 0x1018) /* 0x000E3018 */
+#define HQVDP_MBX 0x000E4000 /* 0x000E4000 */
+#define HQVDP_MBX_IRQ_TO_XP70 (HQVDP_MBX + 0x0000) /* 0x000E4000 */
+#define HQVDP_MBX_INFO_HOST (HQVDP_MBX + 0x0004) /* 0x000E4004 */
+#define HQVDP_MBX_IRQ_TO_HOST (HQVDP_MBX + 0x0008) /* 0x000E4008 */
+#define HQVDP_MBX_INFO_XP70 (HQVDP_MBX + 0x000C) /* 0x000E400C */
+#define HQVDP_MBX_SW_RESET_CTRL (HQVDP_MBX + 0x0010) /* 0x000E4010 */
+#define HQVDP_MBX_STARTUP_CTRL1 (HQVDP_MBX + 0x0014) /* 0x000E4014 */
+#define HQVDP_MBX_STARTUP_CTRL2 (HQVDP_MBX + 0x0018) /* 0x000E4018 */
+#define HQVDP_MBX_GP_STATUS (HQVDP_MBX + 0x001C) /* 0x000E401C */
+#define HQVDP_MBX_NEXT_CMD (HQVDP_MBX + 0x0020) /* 0x000E4020 */
+#define HQVDP_MBX_CURRENT_CMD (HQVDP_MBX + 0x0024) /* 0x000E4024 */
+#define HQVDP_MBX_SOFT_VSYNC (HQVDP_MBX + 0x0028) /* 0x000E4028 */
+
+/* Plugs config */
+#define PLUG_CONTROL_ENABLE 0x00000001
+#define PLUG_PAGE_SIZE_256 0x00000002
+#define PLUG_MIN_OPC_8 0x00000003
+#define PLUG_MAX_OPC_64 0x00000006
+#define PLUG_MAX_CHK_2X 0x00000001
+#define PLUG_MAX_MSG_1X 0x00000000
+#define PLUG_MIN_SPACE_1 0x00000000
+
+/* SW reset CTRL */
+#define SW_RESET_CTRL_FULL BIT(0)
+#define SW_RESET_CTRL_CORE BIT(1)
+
+/* Startup ctrl 1 */
+#define STARTUP_CTRL1_RST_DONE BIT(0)
+#define STARTUP_CTRL1_AUTH_IDLE BIT(2)
+
+/* Startup ctrl 2 */
+#define STARTUP_CTRL2_FETCH_EN BIT(1)
+
+/* Info xP70 */
+#define INFO_XP70_FW_READY BIT(15)
+#define INFO_XP70_FW_PROCESSING BIT(14)
+#define INFO_XP70_FW_INITQUEUES BIT(13)
+
+/* SOFT_VSYNC */
+#define SOFT_VSYNC_HW 0x00000000
+#define SOFT_VSYNC_SW_CMD 0x00000001
+#define SOFT_VSYNC_SW_CTRL_IRQ 0x00000003
+
+/* Reset & boot poll config */
+#define POLL_MAX_ATTEMPT 50
+#define POLL_DELAY_MS 20
+
+#define SCALE_FACTOR 8192
+#define SCALE_MAX_FOR_LEG_LUT_F 4096
+#define SCALE_MAX_FOR_LEG_LUT_E 4915
+#define SCALE_MAX_FOR_LEG_LUT_D 6654
+#define SCALE_MAX_FOR_LEG_LUT_C 8192
+
+enum sti_hvsrc_orient {
+ HVSRC_HORI,
+ HVSRC_VERT
+};
+
+/* Command structures */
+struct sti_hqvdp_top {
+ u32 config;
+ u32 mem_format;
+ u32 current_luma;
+ u32 current_enh_luma;
+ u32 current_right_luma;
+ u32 current_enh_right_luma;
+ u32 current_chroma;
+ u32 current_enh_chroma;
+ u32 current_right_chroma;
+ u32 current_enh_right_chroma;
+ u32 output_luma;
+ u32 output_chroma;
+ u32 luma_src_pitch;
+ u32 luma_enh_src_pitch;
+ u32 luma_right_src_pitch;
+ u32 luma_enh_right_src_pitch;
+ u32 chroma_src_pitch;
+ u32 chroma_enh_src_pitch;
+ u32 chroma_right_src_pitch;
+ u32 chroma_enh_right_src_pitch;
+ u32 luma_processed_pitch;
+ u32 chroma_processed_pitch;
+ u32 input_frame_size;
+ u32 input_viewport_ori;
+ u32 input_viewport_ori_right;
+ u32 input_viewport_size;
+ u32 left_view_border_width;
+ u32 right_view_border_width;
+ u32 left_view_3d_offset_width;
+ u32 right_view_3d_offset_width;
+ u32 side_stripe_color;
+ u32 crc_reset_ctrl;
+};
+
+/* Configs for interlaced : no IT, no pass thru, 3 fields */
+#define TOP_CONFIG_INTER_BTM 0x00000000
+#define TOP_CONFIG_INTER_TOP 0x00000002
+
+/* Config for progressive : no IT, no pass thru, 3 fields */
+#define TOP_CONFIG_PROGRESSIVE 0x00000001
+
+/* Default MemFormat: in=420_raster_dual out=444_raster;opaque Mem2Tv mode */
+#define TOP_MEM_FORMAT_DFLT 0x00018060
+
+/* Min/Max size */
+#define MAX_WIDTH 0x1FFF
+#define MAX_HEIGHT 0x0FFF
+#define MIN_WIDTH 0x0030
+#define MIN_HEIGHT 0x0010
+
+struct sti_hqvdp_vc1re {
+ u32 ctrl_prv_csdi;
+ u32 ctrl_cur_csdi;
+ u32 ctrl_nxt_csdi;
+ u32 ctrl_cur_fmd;
+ u32 ctrl_nxt_fmd;
+};
+
+struct sti_hqvdp_fmd {
+ u32 config;
+ u32 viewport_ori;
+ u32 viewport_size;
+ u32 next_next_luma;
+ u32 next_next_right_luma;
+ u32 next_next_next_luma;
+ u32 next_next_next_right_luma;
+ u32 threshold_scd;
+ u32 threshold_rfd;
+ u32 threshold_move;
+ u32 threshold_cfd;
+};
+
+struct sti_hqvdp_csdi {
+ u32 config;
+ u32 config2;
+ u32 dcdi_config;
+ u32 prev_luma;
+ u32 prev_enh_luma;
+ u32 prev_right_luma;
+ u32 prev_enh_right_luma;
+ u32 next_luma;
+ u32 next_enh_luma;
+ u32 next_right_luma;
+ u32 next_enh_right_luma;
+ u32 prev_chroma;
+ u32 prev_enh_chroma;
+ u32 prev_right_chroma;
+ u32 prev_enh_right_chroma;
+ u32 next_chroma;
+ u32 next_enh_chroma;
+ u32 next_right_chroma;
+ u32 next_enh_right_chroma;
+ u32 prev_motion;
+ u32 prev_right_motion;
+ u32 cur_motion;
+ u32 cur_right_motion;
+ u32 next_motion;
+ u32 next_right_motion;
+};
+
+/* Config for progressive: by pass */
+#define CSDI_CONFIG_PROG 0x00000000
+/* Config for directional deinterlacing without motion */
+#define CSDI_CONFIG_INTER_DIR 0x00000016
+/* Additional configs for fader, blender, motion,... deinterlace algorithms */
+#define CSDI_CONFIG2_DFLT 0x000001B3
+#define CSDI_DCDI_CONFIG_DFLT 0x00203803
+
+struct sti_hqvdp_hvsrc {
+ u32 hor_panoramic_ctrl;
+ u32 output_picture_size;
+ u32 init_horizontal;
+ u32 init_vertical;
+ u32 param_ctrl;
+ u32 yh_coef[NB_COEF];
+ u32 ch_coef[NB_COEF];
+ u32 yv_coef[NB_COEF];
+ u32 cv_coef[NB_COEF];
+ u32 hori_shift;
+ u32 vert_shift;
+};
+
+/* Default ParamCtrl: all controls enabled */
+#define HVSRC_PARAM_CTRL_DFLT 0xFFFFFFFF
+
+struct sti_hqvdp_iqi {
+ u32 config;
+ u32 demo_wind_size;
+ u32 pk_config;
+ u32 coeff0_coeff1;
+ u32 coeff2_coeff3;
+ u32 coeff4;
+ u32 pk_lut;
+ u32 pk_gain;
+ u32 pk_coring_level;
+ u32 cti_config;
+ u32 le_config;
+ u32 le_lut[64];
+ u32 con_bri;
+ u32 sat_gain;
+ u32 pxf_conf;
+ u32 default_color;
+};
+
+/* Default Config : IQI bypassed */
+#define IQI_CONFIG_DFLT 0x00000001
+/* Default Contrast & Brightness gain = 256 */
+#define IQI_CON_BRI_DFLT 0x00000100
+/* Default Saturation gain = 256 */
+#define IQI_SAT_GAIN_DFLT 0x00000100
+/* Default PxfConf : P2I bypassed */
+#define IQI_PXF_CONF_DFLT 0x00000001
+
+struct sti_hqvdp_top_status {
+ u32 processing_time;
+ u32 input_y_crc;
+ u32 input_uv_crc;
+};
+
+struct sti_hqvdp_fmd_status {
+ u32 fmd_repeat_move_status;
+ u32 fmd_scene_count_status;
+ u32 cfd_sum;
+ u32 field_sum;
+ u32 next_y_fmd_crc;
+ u32 next_next_y_fmd_crc;
+ u32 next_next_next_y_fmd_crc;
+};
+
+struct sti_hqvdp_csdi_status {
+ u32 prev_y_csdi_crc;
+ u32 cur_y_csdi_crc;
+ u32 next_y_csdi_crc;
+ u32 prev_uv_csdi_crc;
+ u32 cur_uv_csdi_crc;
+ u32 next_uv_csdi_crc;
+ u32 y_csdi_crc;
+ u32 uv_csdi_crc;
+ u32 uv_cup_crc;
+ u32 mot_csdi_crc;
+ u32 mot_cur_csdi_crc;
+ u32 mot_prev_csdi_crc;
+};
+
+struct sti_hqvdp_hvsrc_status {
+ u32 y_hvsrc_crc;
+ u32 u_hvsrc_crc;
+ u32 v_hvsrc_crc;
+};
+
+struct sti_hqvdp_iqi_status {
+ u32 pxf_it_status;
+ u32 y_iqi_crc;
+ u32 u_iqi_crc;
+ u32 v_iqi_crc;
+};
+
+/* Main commands. We use 2 commands one being processed by the firmware, one
+ * ready to be fetched upon next Vsync*/
+#define NB_VDP_CMD 2
+
+struct sti_hqvdp_cmd {
+ struct sti_hqvdp_top top;
+ struct sti_hqvdp_vc1re vc1re;
+ struct sti_hqvdp_fmd fmd;
+ struct sti_hqvdp_csdi csdi;
+ struct sti_hqvdp_hvsrc hvsrc;
+ struct sti_hqvdp_iqi iqi;
+ struct sti_hqvdp_top_status top_status;
+ struct sti_hqvdp_fmd_status fmd_status;
+ struct sti_hqvdp_csdi_status csdi_status;
+ struct sti_hqvdp_hvsrc_status hvsrc_status;
+ struct sti_hqvdp_iqi_status iqi_status;
+};
+
+/*
+ * STI HQVDP structure
+ *
+ * @dev: driver device
+ * @drm_dev: the drm device
+ * @regs: registers
+ * @layer: layer structure for hqvdp it self
+ * @vid_plane: VID plug used as link with compositor IP
+ * @clk: IP clock
+ * @clk_pix_main: pix main clock
+ * @reset: reset control
+ * @vtg_nb: notifier to handle VTG Vsync
+ * @btm_field_pending: is there any bottom field (interlaced frame) to display
+ * @curr_field_count: number of field updates
+ * @last_field_count: number of field updates since last fps measure
+ * @hqvdp_cmd: buffer of commands
+ * @hqvdp_cmd_paddr: physical address of hqvdp_cmd
+ * @vtg: vtg for main data path
+ */
+struct sti_hqvdp {
+ struct device *dev;
+ struct drm_device *drm_dev;
+ void __iomem *regs;
+ struct sti_layer layer;
+ struct drm_plane *vid_plane;
+ struct clk *clk;
+ struct clk *clk_pix_main;
+ struct reset_control *reset;
+ struct notifier_block vtg_nb;
+ bool btm_field_pending;
+ unsigned int curr_field_count;
+ unsigned int last_field_count;
+ void *hqvdp_cmd;
+ dma_addr_t hqvdp_cmd_paddr;
+ struct sti_vtg *vtg;
+};
+
+#define to_sti_hqvdp(x) container_of(x, struct sti_hqvdp, layer)
+
+static const uint32_t hqvdp_supported_formats[] = {
+ DRM_FORMAT_NV12,
+};
+
+static const uint32_t *sti_hqvdp_get_formats(struct sti_layer *layer)
+{
+ return hqvdp_supported_formats;
+}
+
+static unsigned int sti_hqvdp_get_nb_formats(struct sti_layer *layer)
+{
+ return ARRAY_SIZE(hqvdp_supported_formats);
+}
+
+/**
+ * sti_hqvdp_get_free_cmd
+ * @hqvdp: hqvdp structure
+ *
+ * Look for a hqvdp_cmd that is not being used (or about to be used) by the FW.
+ *
+ * RETURNS:
+ * the offset of the command to be used.
+ * -1 in error cases
+ */
+static int sti_hqvdp_get_free_cmd(struct sti_hqvdp *hqvdp)
+{
+ int curr_cmd, next_cmd;
+ dma_addr_t cmd = hqvdp->hqvdp_cmd_paddr;
+ int i;
+
+ curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD);
+ next_cmd = readl(hqvdp->regs + HQVDP_MBX_NEXT_CMD);
+
+ for (i = 0; i < NB_VDP_CMD; i++) {
+ if ((cmd != curr_cmd) && (cmd != next_cmd))
+ return i * sizeof(struct sti_hqvdp_cmd);
+ cmd += sizeof(struct sti_hqvdp_cmd);
+ }
+
+ return -1;
+}
+
+/**
+ * sti_hqvdp_get_curr_cmd
+ * @hqvdp: hqvdp structure
+ *
+ * Look for the hqvdp_cmd that is being used by the FW.
+ *
+ * RETURNS:
+ * the offset of the command to be used.
+ * -1 in error cases
+ */
+static int sti_hqvdp_get_curr_cmd(struct sti_hqvdp *hqvdp)
+{
+ int curr_cmd;
+ dma_addr_t cmd = hqvdp->hqvdp_cmd_paddr;
+ unsigned int i;
+
+ curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD);
+
+ for (i = 0; i < NB_VDP_CMD; i++) {
+ if (cmd == curr_cmd)
+ return i * sizeof(struct sti_hqvdp_cmd);
+
+ cmd += sizeof(struct sti_hqvdp_cmd);
+ }
+
+ return -1;
+}
+
+/**
+ * sti_hqvdp_update_hvsrc
+ * @orient: horizontal or vertical
+ * @scale: scaling/zoom factor
+ * @hvsrc: the structure containing the LUT coef
+ *
+ * Update the Y and C Lut coef, as well as the shift param
+ *
+ * RETURNS:
+ * None.
+ */
+static void sti_hqvdp_update_hvsrc(enum sti_hvsrc_orient orient, int scale,
+ struct sti_hqvdp_hvsrc *hvsrc)
+{
+ const int *coef_c, *coef_y;
+ int shift_c, shift_y;
+
+ /* Get the appropriate coef tables */
+ if (scale < SCALE_MAX_FOR_LEG_LUT_F) {
+ coef_y = coef_lut_f_y_legacy;
+ coef_c = coef_lut_f_c_legacy;
+ shift_y = SHIFT_LUT_F_Y_LEGACY;
+ shift_c = SHIFT_LUT_F_C_LEGACY;
+ } else if (scale < SCALE_MAX_FOR_LEG_LUT_E) {
+ coef_y = coef_lut_e_y_legacy;
+ coef_c = coef_lut_e_c_legacy;
+ shift_y = SHIFT_LUT_E_Y_LEGACY;
+ shift_c = SHIFT_LUT_E_C_LEGACY;
+ } else if (scale < SCALE_MAX_FOR_LEG_LUT_D) {
+ coef_y = coef_lut_d_y_legacy;
+ coef_c = coef_lut_d_c_legacy;
+ shift_y = SHIFT_LUT_D_Y_LEGACY;
+ shift_c = SHIFT_LUT_D_C_LEGACY;
+ } else if (scale < SCALE_MAX_FOR_LEG_LUT_C) {
+ coef_y = coef_lut_c_y_legacy;
+ coef_c = coef_lut_c_c_legacy;
+ shift_y = SHIFT_LUT_C_Y_LEGACY;
+ shift_c = SHIFT_LUT_C_C_LEGACY;
+ } else if (scale == SCALE_MAX_FOR_LEG_LUT_C) {
+ coef_y = coef_c = coef_lut_b;
+ shift_y = shift_c = SHIFT_LUT_B;
+ } else {
+ coef_y = coef_c = coef_lut_a_legacy;
+ shift_y = shift_c = SHIFT_LUT_A_LEGACY;
+ }
+
+ if (orient == HVSRC_HORI) {
+ hvsrc->hori_shift = (shift_c << 16) | shift_y;
+ memcpy(hvsrc->yh_coef, coef_y, sizeof(hvsrc->yh_coef));
+ memcpy(hvsrc->ch_coef, coef_c, sizeof(hvsrc->ch_coef));
+ } else {
+ hvsrc->vert_shift = (shift_c << 16) | shift_y;
+ memcpy(hvsrc->yv_coef, coef_y, sizeof(hvsrc->yv_coef));
+ memcpy(hvsrc->cv_coef, coef_c, sizeof(hvsrc->cv_coef));
+ }
+}
+
+/**
+ * sti_hqvdp_check_hw_scaling
+ * @layer: hqvdp layer
+ *
+ * Check if the HW is able to perform the scaling request
+ * The firmware scaling limitation is "CEIL(1/Zy) <= FLOOR(LFW)" where:
+ * Zy = OutputHeight / InputHeight
+ * LFW = (Tx * IPClock) / (MaxNbCycles * Cp)
+ * Tx : Total video mode horizontal resolution
+ * IPClock : HQVDP IP clock (Mhz)
+ * MaxNbCycles: max(InputWidth, OutputWidth)
+ * Cp: Video mode pixel clock (Mhz)
+ *
+ * RETURNS:
+ * True if the HW can scale.
+ */
+static bool sti_hqvdp_check_hw_scaling(struct sti_layer *layer)
+{
+ struct sti_hqvdp *hqvdp = to_sti_hqvdp(layer);
+ unsigned long lfw;
+ unsigned int inv_zy;
+
+ lfw = layer->mode->htotal * (clk_get_rate(hqvdp->clk) / 1000000);
+ lfw /= max(layer->src_w, layer->dst_w) * layer->mode->clock / 1000;
+
+ inv_zy = DIV_ROUND_UP(layer->src_h, layer->dst_h);
+
+ return (inv_zy <= lfw) ? true : false;
+}
+
+/**
+ * sti_hqvdp_prepare_layer
+ * @layer: hqvdp layer
+ * @first_prepare: true if it is the first time this function is called
+ *
+ * Prepares a command for the firmware
+ *
+ * RETURNS:
+ * 0 on success.
+ */
+static int sti_hqvdp_prepare_layer(struct sti_layer *layer, bool first_prepare)
+{
+ struct sti_hqvdp *hqvdp = to_sti_hqvdp(layer);
+ struct sti_hqvdp_cmd *cmd;
+ int scale_h, scale_v;
+ int cmd_offset;
+
+ dev_dbg(hqvdp->dev, "%s %s\n", __func__, sti_layer_to_str(layer));
+
+ /* prepare and commit VID plane */
+ hqvdp->vid_plane->funcs->update_plane(hqvdp->vid_plane,
+ layer->crtc, layer->fb,
+ layer->dst_x, layer->dst_y,
+ layer->dst_w, layer->dst_h,
+ layer->src_x, layer->src_y,
+ layer->src_w, layer->src_h);
+
+ cmd_offset = sti_hqvdp_get_free_cmd(hqvdp);
+ if (cmd_offset == -1) {
+ DRM_ERROR("No available hqvdp_cmd now\n");
+ return -EBUSY;
+ }
+ cmd = hqvdp->hqvdp_cmd + cmd_offset;
+
+ if (!sti_hqvdp_check_hw_scaling(layer)) {
+ DRM_ERROR("Scaling beyond HW capabilities\n");
+ return -EINVAL;
+ }
+
+ /* Static parameters, defaulting to progressive mode */
+ cmd->top.config = TOP_CONFIG_PROGRESSIVE;
+ cmd->top.mem_format = TOP_MEM_FORMAT_DFLT;
+ cmd->hvsrc.param_ctrl = HVSRC_PARAM_CTRL_DFLT;
+ cmd->csdi.config = CSDI_CONFIG_PROG;
+
+ /* VC1RE, FMD bypassed : keep everything set to 0
+ * IQI/P2I bypassed */
+ cmd->iqi.config = IQI_CONFIG_DFLT;
+ cmd->iqi.con_bri = IQI_CON_BRI_DFLT;
+ cmd->iqi.sat_gain = IQI_SAT_GAIN_DFLT;
+ cmd->iqi.pxf_conf = IQI_PXF_CONF_DFLT;
+
+ /* Buffer planes address */
+ cmd->top.current_luma = (u32) layer->paddr + layer->offsets[0];
+ cmd->top.current_chroma = (u32) layer->paddr + layer->offsets[1];
+
+ /* Pitches */
+ cmd->top.luma_processed_pitch = cmd->top.luma_src_pitch =
+ layer->pitches[0];
+ cmd->top.chroma_processed_pitch = cmd->top.chroma_src_pitch =
+ layer->pitches[1];
+
+ /* Input / output size
+ * Align to upper even value */
+ layer->dst_w = ALIGN(layer->dst_w, 2);
+ layer->dst_h = ALIGN(layer->dst_h, 2);
+
+ if ((layer->src_w > MAX_WIDTH) || (layer->src_w < MIN_WIDTH) ||
+ (layer->src_h > MAX_HEIGHT) || (layer->src_h < MIN_HEIGHT) ||
+ (layer->dst_w > MAX_WIDTH) || (layer->dst_w < MIN_WIDTH) ||
+ (layer->dst_h > MAX_HEIGHT) || (layer->dst_h < MIN_HEIGHT)) {
+ DRM_ERROR("Invalid in/out size %dx%d -> %dx%d\n",
+ layer->src_w, layer->src_h,
+ layer->dst_w, layer->dst_h);
+ return -EINVAL;
+ }
+ cmd->top.input_viewport_size = cmd->top.input_frame_size =
+ layer->src_h << 16 | layer->src_w;
+ cmd->hvsrc.output_picture_size = layer->dst_h << 16 | layer->dst_w;
+ cmd->top.input_viewport_ori = layer->src_y << 16 | layer->src_x;
+
+ /* Handle interlaced */
+ if (layer->fb->flags & DRM_MODE_FB_INTERLACED) {
+ /* Top field to display */
+ cmd->top.config = TOP_CONFIG_INTER_TOP;
+
+ /* Update pitches and vert size */
+ cmd->top.input_frame_size = (layer->src_h / 2) << 16 |
+ layer->src_w;
+ cmd->top.luma_processed_pitch *= 2;
+ cmd->top.luma_src_pitch *= 2;
+ cmd->top.chroma_processed_pitch *= 2;
+ cmd->top.chroma_src_pitch *= 2;
+
+ /* Enable directional deinterlacing processing */
+ cmd->csdi.config = CSDI_CONFIG_INTER_DIR;
+ cmd->csdi.config2 = CSDI_CONFIG2_DFLT;
+ cmd->csdi.dcdi_config = CSDI_DCDI_CONFIG_DFLT;
+ }
+
+ /* Update hvsrc lut coef */
+ scale_h = SCALE_FACTOR * layer->dst_w / layer->src_w;
+ sti_hqvdp_update_hvsrc(HVSRC_HORI, scale_h, &cmd->hvsrc);
+
+ scale_v = SCALE_FACTOR * layer->dst_h / layer->src_h;
+ sti_hqvdp_update_hvsrc(HVSRC_VERT, scale_v, &cmd->hvsrc);
+
+ if (first_prepare) {
+ /* Prevent VTG shutdown */
+ if (clk_prepare_enable(hqvdp->clk_pix_main)) {
+ DRM_ERROR("Failed to prepare/enable pix main clk\n");
+ return -ENXIO;
+ }
+
+ /* Register VTG Vsync callback to handle bottom fields */
+ if ((layer->fb->flags & DRM_MODE_FB_INTERLACED) &&
+ sti_vtg_register_client(hqvdp->vtg,
+ &hqvdp->vtg_nb, layer->mixer_id)) {
+ DRM_ERROR("Cannot register VTG notifier\n");
+ return -ENXIO;
+ }
+ }
+
+ return 0;
+}
+
+static int sti_hqvdp_commit_layer(struct sti_layer *layer)
+{
+ struct sti_hqvdp *hqvdp = to_sti_hqvdp(layer);
+ int cmd_offset;
+
+ dev_dbg(hqvdp->dev, "%s %s\n", __func__, sti_layer_to_str(layer));
+
+ cmd_offset = sti_hqvdp_get_free_cmd(hqvdp);
+ if (cmd_offset == -1) {
+ DRM_ERROR("No available hqvdp_cmd now\n");
+ return -EBUSY;
+ }
+
+ writel(hqvdp->hqvdp_cmd_paddr + cmd_offset,
+ hqvdp->regs + HQVDP_MBX_NEXT_CMD);
+
+ hqvdp->curr_field_count++;
+
+ /* Interlaced : get ready to display the bottom field at next Vsync */
+ if (layer->fb->flags & DRM_MODE_FB_INTERLACED)
+ hqvdp->btm_field_pending = true;
+
+ dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
+ __func__, hqvdp->hqvdp_cmd_paddr + cmd_offset);
+
+ return 0;
+}
+
+static int sti_hqvdp_disable_layer(struct sti_layer *layer)
+{
+ struct sti_hqvdp *hqvdp = to_sti_hqvdp(layer);
+ int i;
+
+ DRM_DEBUG_DRIVER("%s\n", sti_layer_to_str(layer));
+
+ /* Unregister VTG Vsync callback */
+ if ((layer->fb->flags & DRM_MODE_FB_INTERLACED) &&
+ sti_vtg_unregister_client(hqvdp->vtg, &hqvdp->vtg_nb))
+ DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
+
+ /* Set next cmd to NULL */
+ writel(0, hqvdp->regs + HQVDP_MBX_NEXT_CMD);
+
+ for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
+ if (readl(hqvdp->regs + HQVDP_MBX_INFO_XP70)
+ & INFO_XP70_FW_READY)
+ break;
+ msleep(POLL_DELAY_MS);
+ }
+
+ /* VTG can stop now */
+ clk_disable_unprepare(hqvdp->clk_pix_main);
+
+ if (i == POLL_MAX_ATTEMPT) {
+ DRM_ERROR("XP70 could not revert to idle\n");
+ return -ENXIO;
+ }
+
+ /* disable VID plane */
+ hqvdp->vid_plane->funcs->disable_plane(hqvdp->vid_plane);
+
+ return 0;
+}
+
+/**
+ * sti_vdp_vtg_cb
+ * @nb: notifier block
+ * @evt: event message
+ * @data: private data
+ *
+ * Handle VTG Vsync event, display pending bottom field
+ *
+ * RETURNS:
+ * 0 on success.
+ */
+int sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data)
+{
+ struct sti_hqvdp *hqvdp = container_of(nb, struct sti_hqvdp, vtg_nb);
+ int btm_cmd_offset, top_cmd_offest;
+ struct sti_hqvdp_cmd *btm_cmd, *top_cmd;
+
+ if ((evt != VTG_TOP_FIELD_EVENT) && (evt != VTG_BOTTOM_FIELD_EVENT)) {
+ DRM_DEBUG_DRIVER("Unknown event\n");
+ return 0;
+ }
+
+ if (hqvdp->btm_field_pending) {
+ /* Create the btm field command from the current one */
+ btm_cmd_offset = sti_hqvdp_get_free_cmd(hqvdp);
+ top_cmd_offest = sti_hqvdp_get_curr_cmd(hqvdp);
+ if ((btm_cmd_offset == -1) || (top_cmd_offest == -1)) {
+ DRM_ERROR("Cannot get cmds, skip btm field\n");
+ return -EBUSY;
+ }
+
+ btm_cmd = hqvdp->hqvdp_cmd + btm_cmd_offset;
+ top_cmd = hqvdp->hqvdp_cmd + top_cmd_offest;
+
+ memcpy(btm_cmd, top_cmd, sizeof(*btm_cmd));
+
+ btm_cmd->top.config = TOP_CONFIG_INTER_BTM;
+ btm_cmd->top.current_luma +=
+ btm_cmd->top.luma_src_pitch / 2;
+ btm_cmd->top.current_chroma +=
+ btm_cmd->top.chroma_src_pitch / 2;
+
+ /* Post the command to mailbox */
+ writel(hqvdp->hqvdp_cmd_paddr + btm_cmd_offset,
+ hqvdp->regs + HQVDP_MBX_NEXT_CMD);
+
+ hqvdp->curr_field_count++;
+ hqvdp->btm_field_pending = false;
+
+ dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
+ __func__, hqvdp->hqvdp_cmd_paddr);
+ }
+
+ return 0;
+}
+
+static struct drm_plane *sti_hqvdp_find_vid(struct drm_device *dev, int id)
+{
+ struct drm_plane *plane;
+
+ list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
+ struct sti_layer *layer = to_sti_layer(plane);
+
+ if (layer->desc == id)
+ return plane;
+ }
+
+ return NULL;
+}
+
+static void sti_hqvd_init(struct sti_layer *layer)
+{
+ struct sti_hqvdp *hqvdp = to_sti_hqvdp(layer);
+ int size;
+
+ /* find the plane macthing with vid 0 */
+ hqvdp->vid_plane = sti_hqvdp_find_vid(hqvdp->drm_dev, STI_VID_0);
+ if (!hqvdp->vid_plane) {
+ DRM_ERROR("Cannot find Main video layer\n");
+ return;
+ }
+
+ hqvdp->vtg_nb.notifier_call = sti_hqvdp_vtg_cb;
+
+ /* Allocate memory for the VDP commands */
+ size = NB_VDP_CMD * sizeof(struct sti_hqvdp_cmd);
+ hqvdp->hqvdp_cmd = dma_alloc_writecombine(hqvdp->dev, size,
+ &hqvdp->hqvdp_cmd_paddr,
+ GFP_KERNEL | GFP_DMA);
+ if (!hqvdp->hqvdp_cmd) {
+ DRM_ERROR("Failed to allocate memory for VDP cmd\n");
+ return;
+ }
+
+ memset(hqvdp->hqvdp_cmd, 0, size);
+}
+
+static const struct sti_layer_funcs hqvdp_ops = {
+ .get_formats = sti_hqvdp_get_formats,
+ .get_nb_formats = sti_hqvdp_get_nb_formats,
+ .init = sti_hqvd_init,
+ .prepare = sti_hqvdp_prepare_layer,
+ .commit = sti_hqvdp_commit_layer,
+ .disable = sti_hqvdp_disable_layer,
+};
+
+struct sti_layer *sti_hqvdp_create(struct device *dev)
+{
+ struct sti_hqvdp *hqvdp = dev_get_drvdata(dev);
+
+ hqvdp->layer.ops = &hqvdp_ops;
+
+ return &hqvdp->layer;
+}
+EXPORT_SYMBOL(sti_hqvdp_create);
+
+static void sti_hqvdp_init_plugs(struct sti_hqvdp *hqvdp)
+{
+ /* Configure Plugs (same for RD & WR) */
+ writel(PLUG_PAGE_SIZE_256, hqvdp->regs + HQVDP_RD_PLUG_PAGE_SIZE);
+ writel(PLUG_MIN_OPC_8, hqvdp->regs + HQVDP_RD_PLUG_MIN_OPC);
+ writel(PLUG_MAX_OPC_64, hqvdp->regs + HQVDP_RD_PLUG_MAX_OPC);
+ writel(PLUG_MAX_CHK_2X, hqvdp->regs + HQVDP_RD_PLUG_MAX_CHK);
+ writel(PLUG_MAX_MSG_1X, hqvdp->regs + HQVDP_RD_PLUG_MAX_MSG);
+ writel(PLUG_MIN_SPACE_1, hqvdp->regs + HQVDP_RD_PLUG_MIN_SPACE);
+ writel(PLUG_CONTROL_ENABLE, hqvdp->regs + HQVDP_RD_PLUG_CONTROL);
+
+ writel(PLUG_PAGE_SIZE_256, hqvdp->regs + HQVDP_WR_PLUG_PAGE_SIZE);
+ writel(PLUG_MIN_OPC_8, hqvdp->regs + HQVDP_WR_PLUG_MIN_OPC);
+ writel(PLUG_MAX_OPC_64, hqvdp->regs + HQVDP_WR_PLUG_MAX_OPC);
+ writel(PLUG_MAX_CHK_2X, hqvdp->regs + HQVDP_WR_PLUG_MAX_CHK);
+ writel(PLUG_MAX_MSG_1X, hqvdp->regs + HQVDP_WR_PLUG_MAX_MSG);
+ writel(PLUG_MIN_SPACE_1, hqvdp->regs + HQVDP_WR_PLUG_MIN_SPACE);
+ writel(PLUG_CONTROL_ENABLE, hqvdp->regs + HQVDP_WR_PLUG_CONTROL);
+}
+
+/**
+ * sti_hqvdp_start_xp70
+ * @firmware: firmware found
+ * @ctxt: hqvdp structure
+ *
+ * Run the xP70 initialization sequence
+ */
+static void sti_hqvdp_start_xp70(const struct firmware *firmware, void *ctxt)
+{
+ struct sti_hqvdp *hqvdp = ctxt;
+ u32 *fw_rd_plug, *fw_wr_plug, *fw_pmem, *fw_dmem;
+ u8 *data;
+ int i;
+ struct fw_header {
+ int rd_size;
+ int wr_size;
+ int pmem_size;
+ int dmem_size;
+ } *header;
+
+ DRM_DEBUG_DRIVER("\n");
+ /* Check firmware parts */
+ if (!firmware) {
+ DRM_ERROR("Firmware not available\n");
+ return;
+ }
+
+ header = (struct fw_header *) firmware->data;
+ if (firmware->size < sizeof(*header)) {
+ DRM_ERROR("Invalid firmware size (%d)\n", firmware->size);
+ goto out;
+ }
+ if ((sizeof(*header) + header->rd_size + header->wr_size +
+ header->pmem_size + header->dmem_size) != firmware->size) {
+ DRM_ERROR("Invalid fmw structure (%d+%d+%d+%d+%d != %d)\n",
+ sizeof(*header), header->rd_size, header->wr_size,
+ header->pmem_size, header->dmem_size,
+ firmware->size);
+ goto out;
+ }
+
+ data = (u8 *) firmware->data;
+ data += sizeof(*header);
+ fw_rd_plug = (void *) data;
+ data += header->rd_size;
+ fw_wr_plug = (void *) data;
+ data += header->wr_size;
+ fw_pmem = (void *) data;
+ data += header->pmem_size;
+ fw_dmem = (void *) data;
+
+ /* Enable clock */
+ if (clk_prepare_enable(hqvdp->clk))
+ DRM_ERROR("Failed to prepare/enable HQVDP clk\n");
+
+ /* Reset */
+ writel(SW_RESET_CTRL_FULL, hqvdp->regs + HQVDP_MBX_SW_RESET_CTRL);
+
+ for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
+ if (readl(hqvdp->regs + HQVDP_MBX_STARTUP_CTRL1)
+ & STARTUP_CTRL1_RST_DONE)
+ break;
+ msleep(POLL_DELAY_MS);
+ }
+ if (i == POLL_MAX_ATTEMPT) {
+ DRM_ERROR("Could not reset\n");
+ goto out;
+ }
+
+ /* Init Read & Write plugs */
+ for (i = 0; i < header->rd_size / 4; i++)
+ writel(fw_rd_plug[i], hqvdp->regs + HQVDP_RD_PLUG + i * 4);
+ for (i = 0; i < header->wr_size / 4; i++)
+ writel(fw_wr_plug[i], hqvdp->regs + HQVDP_WR_PLUG + i * 4);
+
+ sti_hqvdp_init_plugs(hqvdp);
+
+ /* Authorize Idle Mode */
+ writel(STARTUP_CTRL1_AUTH_IDLE, hqvdp->regs + HQVDP_MBX_STARTUP_CTRL1);
+
+ /* Prevent VTG interruption during the boot */
+ writel(SOFT_VSYNC_SW_CTRL_IRQ, hqvdp->regs + HQVDP_MBX_SOFT_VSYNC);
+ writel(0, hqvdp->regs + HQVDP_MBX_NEXT_CMD);
+
+ /* Download PMEM & DMEM */
+ for (i = 0; i < header->pmem_size / 4; i++)
+ writel(fw_pmem[i], hqvdp->regs + HQVDP_PMEM + i * 4);
+ for (i = 0; i < header->dmem_size / 4; i++)
+ writel(fw_dmem[i], hqvdp->regs + HQVDP_DMEM + i * 4);
+
+ /* Enable fetch */
+ writel(STARTUP_CTRL2_FETCH_EN, hqvdp->regs + HQVDP_MBX_STARTUP_CTRL2);
+
+ /* Wait end of boot */
+ for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
+ if (readl(hqvdp->regs + HQVDP_MBX_INFO_XP70)
+ & INFO_XP70_FW_READY)
+ break;
+ msleep(POLL_DELAY_MS);
+ }
+ if (i == POLL_MAX_ATTEMPT) {
+ DRM_ERROR("Could not boot\n");
+ goto out;
+ }
+
+ /* Launch Vsync */
+ writel(SOFT_VSYNC_HW, hqvdp->regs + HQVDP_MBX_SOFT_VSYNC);
+
+ DRM_INFO("HQVDP XP70 started\n");
+out:
+ release_firmware(firmware);
+}
+
+int sti_hqvdp_bind(struct device *dev, struct device *master, void *data)
+{
+ struct sti_hqvdp *hqvdp = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+ struct sti_layer *layer;
+ int err;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ hqvdp->drm_dev = drm_dev;
+
+ /* Request for firmware */
+ err = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
+ HQVDP_FMW_NAME, hqvdp->dev,
+ GFP_KERNEL, hqvdp, sti_hqvdp_start_xp70);
+ if (err) {
+ DRM_ERROR("Can't get HQVDP firmware\n");
+ return err;
+ }
+
+ layer = sti_layer_create(hqvdp->dev, STI_HQVDP_0, hqvdp->regs);
+ if (!layer) {
+ DRM_ERROR("Can't create HQVDP plane\n");
+ return -ENOMEM;
+ }
+
+ sti_drm_plane_init(drm_dev, layer, 1, DRM_PLANE_TYPE_OVERLAY);
+
+ return 0;
+}
+
+static void sti_hqvdp_unbind(struct device *dev,
+ struct device *master, void *data)
+{
+ /* do nothing */
+}
+
+static const struct component_ops sti_hqvdp_ops = {
+ .bind = sti_hqvdp_bind,
+ .unbind = sti_hqvdp_unbind,
+};
+
+static int sti_hqvdp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *vtg_np;
+ struct sti_hqvdp *hqvdp;
+ struct resource *res;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ hqvdp = devm_kzalloc(dev, sizeof(*hqvdp), GFP_KERNEL);
+ if (!hqvdp) {
+ DRM_ERROR("Failed to allocate HQVDP context\n");
+ return -ENOMEM;
+ }
+
+ hqvdp->dev = dev;
+
+ /* Get Memory resources */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ DRM_ERROR("Get memory resource failed\n");
+ return -ENXIO;
+ }
+ hqvdp->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (hqvdp->regs == NULL) {
+ DRM_ERROR("Register mapping failed\n");
+ return -ENXIO;
+ }
+
+ /* Get clock resources */
+ hqvdp->clk = devm_clk_get(dev, "hqvdp");
+ hqvdp->clk_pix_main = devm_clk_get(dev, "pix_main");
+ if (IS_ERR(hqvdp->clk) || IS_ERR(hqvdp->clk_pix_main)) {
+ DRM_ERROR("Cannot get clocks\n");
+ return -ENXIO;
+ }
+
+ /* Get reset resources */
+ hqvdp->reset = devm_reset_control_get(dev, "hqvdp");
+ if (!IS_ERR(hqvdp->reset))
+ reset_control_deassert(hqvdp->reset);
+
+ vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
+ if (vtg_np)
+ hqvdp->vtg = of_vtg_find(vtg_np);
+
+ platform_set_drvdata(pdev, hqvdp);
+
+ return component_add(&pdev->dev, &sti_hqvdp_ops);
+}
+
+static int sti_hqvdp_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &sti_hqvdp_ops);
+ return 0;
+}
+
+static struct of_device_id hqvdp_of_match[] = {
+ { .compatible = "st,stih407-hqvdp", },
+ { /* end node */ }
+};
+MODULE_DEVICE_TABLE(of, hqvdp_of_match);
+
+struct platform_driver sti_hqvdp_driver = {
+ .driver = {
+ .name = "sti-hqvdp",
+ .owner = THIS_MODULE,
+ .of_match_table = hqvdp_of_match,
+ },
+ .probe = sti_hqvdp_probe,
+ .remove = sti_hqvdp_remove,
+};
+
+module_platform_driver(sti_hqvdp_driver);
+
+MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
+MODULE_LICENSE("GPL");