diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_dp501.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_dp501.c | 241 |
1 files changed, 189 insertions, 52 deletions
diff --git a/drivers/gpu/drm/ast/ast_dp501.c b/drivers/gpu/drm/ast/ast_dp501.c index 9a4c3a0963f9..9e19d8c17730 100644 --- a/drivers/gpu/drm/ast/ast_dp501.c +++ b/drivers/gpu/drm/ast/ast_dp501.c @@ -4,6 +4,11 @@ #include <linux/firmware.h> #include <linux/module.h> +#include <drm/drm_atomic_state_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_modeset_helper_vtables.h> +#include <drm/drm_probe_helper.h> + #include "ast_drv.h" MODULE_FIRMWARE("ast_dp501_fw.bin"); @@ -16,9 +21,9 @@ static void ast_release_firmware(void *data) ast->dp501_fw = NULL; } -static int ast_load_dp501_microcode(struct drm_device *dev) +static int ast_load_dp501_microcode(struct ast_device *ast) { - struct ast_device *ast = to_ast_device(dev); + struct drm_device *dev = &ast->base; int ret; ret = request_firmware(&ast->dp501_fw, "ast_dp501_fw.bin", dev->dev); @@ -104,10 +109,10 @@ static bool wait_fw_ready(struct ast_device *ast) } #endif -static bool ast_write_cmd(struct drm_device *dev, u8 data) +static bool ast_write_cmd(struct ast_device *ast, u8 data) { - struct ast_device *ast = to_ast_device(dev); int retry = 0; + if (wait_nack(ast)) { send_nack(ast); ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data); @@ -126,10 +131,8 @@ static bool ast_write_cmd(struct drm_device *dev, u8 data) return false; } -static bool ast_write_data(struct drm_device *dev, u8 data) +static bool ast_write_data(struct ast_device *ast, u8 data) { - struct ast_device *ast = to_ast_device(dev); - if (wait_nack(ast)) { send_nack(ast); ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data); @@ -170,10 +173,10 @@ static void clear_cmd(struct ast_device *ast) } #endif -void ast_set_dp501_video_output(struct drm_device *dev, u8 mode) +static void ast_set_dp501_video_output(struct ast_device *ast, u8 mode) { - ast_write_cmd(dev, 0x40); - ast_write_data(dev, mode); + ast_write_cmd(ast, 0x40); + ast_write_data(ast, mode); msleep(10); } @@ -183,9 +186,8 @@ static u32 get_fw_base(struct ast_device *ast) return ast_mindwm(ast, 0x1e6e2104) & 0x7fffffff; } -bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size) +bool ast_backup_fw(struct ast_device *ast, u8 *addr, u32 size) { - struct ast_device *ast = to_ast_device(dev); u32 i, data; u32 boot_address; @@ -202,9 +204,8 @@ bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size) return false; } -static bool ast_launch_m68k(struct drm_device *dev) +static bool ast_launch_m68k(struct ast_device *ast) { - struct ast_device *ast = to_ast_device(dev); u32 i, data, len = 0; u32 boot_address; u8 *fw_addr = NULL; @@ -221,7 +222,7 @@ static bool ast_launch_m68k(struct drm_device *dev) len = 32*1024; } else { if (!ast->dp501_fw && - ast_load_dp501_microcode(dev) < 0) + ast_load_dp501_microcode(ast) < 0) return false; fw_addr = (u8 *)ast->dp501_fw->data; @@ -272,7 +273,7 @@ static bool ast_launch_m68k(struct drm_device *dev) return true; } -bool ast_dp501_is_connected(struct ast_device *ast) +static bool ast_dp501_is_connected(struct ast_device *ast) { u32 boot_address, offset, data; @@ -313,41 +314,38 @@ bool ast_dp501_is_connected(struct ast_device *ast) return true; } -bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata) +static int ast_dp512_read_edid_block(void *data, u8 *buf, unsigned int block, size_t len) { - struct ast_device *ast = to_ast_device(dev); - u32 i, boot_address, offset, data; - u32 *pEDIDidx; + struct ast_device *ast = data; + size_t rdlen = round_up(len, 4); + u32 i, boot_address, offset, ediddata; - if (!ast_dp501_is_connected(ast)) - return false; + if (block > (512 / EDID_LENGTH)) + return -EIO; + + offset = AST_DP501_EDID_DATA + block * EDID_LENGTH; if (ast->config_mode == ast_use_p2a) { boot_address = get_fw_base(ast); - /* Read EDID */ - offset = AST_DP501_EDID_DATA; - for (i = 0; i < 128; i += 4) { - data = ast_mindwm(ast, boot_address + offset + i); - pEDIDidx = (u32 *)(ediddata + i); - *pEDIDidx = data; + for (i = 0; i < rdlen; i += 4) { + ediddata = ast_mindwm(ast, boot_address + offset + i); + memcpy(buf, &ediddata, min((len - i), 4)); + buf += 4; } } else { - /* Read EDID */ - offset = AST_DP501_EDID_DATA; - for (i = 0; i < 128; i += 4) { - data = readl(ast->dp501_fw_buf + offset + i); - pEDIDidx = (u32 *)(ediddata + i); - *pEDIDidx = data; + for (i = 0; i < rdlen; i += 4) { + ediddata = readl(ast->dp501_fw_buf + offset + i); + memcpy(buf, &ediddata, min((len - i), 4)); + buf += 4; } } return true; } -static bool ast_init_dvo(struct drm_device *dev) +static bool ast_init_dvo(struct ast_device *ast) { - struct ast_device *ast = to_ast_device(dev); u8 jreg; u32 data; ast_write32(ast, 0xf004, 0x1e6e0000); @@ -418,9 +416,8 @@ static bool ast_init_dvo(struct drm_device *dev) } -static void ast_init_analog(struct drm_device *dev) +static void ast_init_analog(struct ast_device *ast) { - struct ast_device *ast = to_ast_device(dev); u32 data; /* @@ -445,28 +442,168 @@ static void ast_init_analog(struct drm_device *dev) ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x00); } -void ast_init_3rdtx(struct drm_device *dev) +void ast_init_3rdtx(struct ast_device *ast) { - struct ast_device *ast = to_ast_device(dev); - u8 jreg; + u8 vgacrd1; if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) { - jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, 0xff); - switch (jreg & 0x0e) { - case 0x04: - ast_init_dvo(dev); + vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, + AST_IO_VGACRD1_TX_TYPE_MASK); + switch (vgacrd1) { + case AST_IO_VGACRD1_TX_SIL164_VBIOS: + ast_init_dvo(ast); break; - case 0x08: - ast_launch_m68k(dev); + case AST_IO_VGACRD1_TX_DP501_VBIOS: + ast_launch_m68k(ast); break; - case 0x0c: - ast_init_dvo(dev); + case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW: + ast_init_dvo(ast); break; default: - if (ast->tx_chip_types & BIT(AST_TX_SIL164)) - ast_init_dvo(dev); + if (ast->tx_chip == AST_TX_SIL164) + ast_init_dvo(ast); else - ast_init_analog(dev); + ast_init_analog(ast); } } } + +/* + * Encoder + */ + +static const struct drm_encoder_funcs ast_dp501_encoder_funcs = { + .destroy = drm_encoder_cleanup, +}; + +static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder, + struct drm_atomic_state *state) +{ + struct ast_device *ast = to_ast_device(encoder->dev); + + ast_set_dp501_video_output(ast, 1); +} + +static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder, + struct drm_atomic_state *state) +{ + struct ast_device *ast = to_ast_device(encoder->dev); + + ast_set_dp501_video_output(ast, 0); +} + +static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = { + .atomic_enable = ast_dp501_encoder_helper_atomic_enable, + .atomic_disable = ast_dp501_encoder_helper_atomic_disable, +}; + +/* + * Connector + */ + +static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector) +{ + struct ast_connector *ast_connector = to_ast_connector(connector); + int count; + + if (ast_connector->physical_status == connector_status_connected) { + struct ast_device *ast = to_ast_device(connector->dev); + const struct drm_edid *drm_edid; + + drm_edid = drm_edid_read_custom(connector, ast_dp512_read_edid_block, ast); + drm_edid_connector_update(connector, drm_edid); + count = drm_edid_connector_add_modes(connector); + drm_edid_free(drm_edid); + } else { + drm_edid_connector_update(connector, NULL); + + /* + * There's no EDID data without a connected monitor. Set BMC- + * compatible modes in this case. The XGA default resolution + * should work well for all BMCs. + */ + count = drm_add_modes_noedid(connector, 4096, 4096); + if (count) + drm_set_preferred_mode(connector, 1024, 768); + } + + return count; +} + +static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector, + struct drm_modeset_acquire_ctx *ctx, + bool force) +{ + struct ast_connector *ast_connector = to_ast_connector(connector); + struct ast_device *ast = to_ast_device(connector->dev); + enum drm_connector_status status = connector_status_disconnected; + + if (ast_dp501_is_connected(ast)) + status = connector_status_connected; + + if (status != ast_connector->physical_status) + ++connector->epoch_counter; + ast_connector->physical_status = status; + + return connector_status_connected; +} + +static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = { + .get_modes = ast_dp501_connector_helper_get_modes, + .detect_ctx = ast_dp501_connector_helper_detect_ctx, +}; + +static const struct drm_connector_funcs ast_dp501_connector_funcs = { + .reset = drm_atomic_helper_connector_reset, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +/* + * Output + */ + +int ast_dp501_output_init(struct ast_device *ast) +{ + struct drm_device *dev = &ast->base; + struct drm_crtc *crtc = &ast->crtc; + struct drm_encoder *encoder; + struct ast_connector *ast_connector; + struct drm_connector *connector; + int ret; + + /* encoder */ + + encoder = &ast->output.dp501.encoder; + ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs, + DRM_MODE_ENCODER_TMDS, NULL); + if (ret) + return ret; + drm_encoder_helper_add(encoder, &ast_dp501_encoder_helper_funcs); + + encoder->possible_crtcs = drm_crtc_mask(crtc); + + /* connector */ + + ast_connector = &ast->output.dp501.connector; + connector = &ast_connector->base; + ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs, + DRM_MODE_CONNECTOR_DisplayPort); + if (ret) + return ret; + drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs); + + connector->interlace_allowed = 0; + connector->doublescan_allowed = 0; + connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; + + ast_connector->physical_status = connector->status; + + ret = drm_connector_attach_encoder(connector, encoder); + if (ret) + return ret; + + return 0; +} |