[PATCH 1/3] drm/ast: Remove unused code paths for AST 1180
Daniel Vetter
daniel at ffwll.ch
Thu Jun 11 17:24:48 UTC 2020
On Thu, Jun 11, 2020 at 10:28:07AM +0200, Thomas Zimmermann wrote:
> The ast driver contains code paths for AST 1180 chips. The chip is not
> supported and the rsp code has never been tested. Simplify the driver by
> removing the AST 1180 code.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/ast/ast_drv.c | 1 -
> drivers/gpu/drm/ast/ast_drv.h | 2 -
> drivers/gpu/drm/ast/ast_main.c | 89 +++++++++++++++-------------------
> drivers/gpu/drm/ast/ast_mode.c | 10 +---
> drivers/gpu/drm/ast/ast_post.c | 10 ++--
> 5 files changed, 43 insertions(+), 69 deletions(-)
>
> diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
> index b7ba22dddcad9..83509106f3ba9 100644
> --- a/drivers/gpu/drm/ast/ast_drv.c
> +++ b/drivers/gpu/drm/ast/ast_drv.c
> @@ -59,7 +59,6 @@ static struct drm_driver driver;
> static const struct pci_device_id pciidlist[] = {
> AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
> AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
> - /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
> {0, 0, 0},
> };
>
> diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
> index 656d591b154b3..09f2659e29118 100644
> --- a/drivers/gpu/drm/ast/ast_drv.h
> +++ b/drivers/gpu/drm/ast/ast_drv.h
> @@ -52,7 +52,6 @@
>
> #define PCI_CHIP_AST2000 0x2000
> #define PCI_CHIP_AST2100 0x2010
> -#define PCI_CHIP_AST1180 0x1180
>
>
> enum ast_chip {
> @@ -64,7 +63,6 @@ enum ast_chip {
> AST2300,
> AST2400,
> AST2500,
> - AST1180,
> };
>
> enum ast_tx_chip {
> diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
> index e5398e3dabe70..f48a9f62368c0 100644
> --- a/drivers/gpu/drm/ast/ast_main.c
> +++ b/drivers/gpu/drm/ast/ast_main.c
> @@ -142,50 +142,42 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
> ast_detect_config_mode(dev, &scu_rev);
>
> /* Identify chipset */
> - if (dev->pdev->device == PCI_CHIP_AST1180) {
> - ast->chip = AST1100;
> - DRM_INFO("AST 1180 detected\n");
> - } else {
> - if (dev->pdev->revision >= 0x40) {
> - ast->chip = AST2500;
> - DRM_INFO("AST 2500 detected\n");
> - } else if (dev->pdev->revision >= 0x30) {
> - ast->chip = AST2400;
> - DRM_INFO("AST 2400 detected\n");
> - } else if (dev->pdev->revision >= 0x20) {
> - ast->chip = AST2300;
> - DRM_INFO("AST 2300 detected\n");
> - } else if (dev->pdev->revision >= 0x10) {
> - switch (scu_rev & 0x0300) {
> - case 0x0200:
> - ast->chip = AST1100;
> - DRM_INFO("AST 1100 detected\n");
> - break;
> - case 0x0100:
> - ast->chip = AST2200;
> - DRM_INFO("AST 2200 detected\n");
> - break;
> - case 0x0000:
> - ast->chip = AST2150;
> - DRM_INFO("AST 2150 detected\n");
> - break;
> - default:
> - ast->chip = AST2100;
> - DRM_INFO("AST 2100 detected\n");
> - break;
> - }
> - ast->vga2_clone = false;
> - } else {
> - ast->chip = AST2000;
> - DRM_INFO("AST 2000 detected\n");
> + if (dev->pdev->revision >= 0x40) {
> + ast->chip = AST2500;
> + DRM_INFO("AST 2500 detected\n");
> + } else if (dev->pdev->revision >= 0x30) {
> + ast->chip = AST2400;
> + DRM_INFO("AST 2400 detected\n");
> + } else if (dev->pdev->revision >= 0x20) {
> + ast->chip = AST2300;
> + DRM_INFO("AST 2300 detected\n");
> + } else if (dev->pdev->revision >= 0x10) {
> + switch (scu_rev & 0x0300) {
> + case 0x0200:
> + ast->chip = AST1100;
> + DRM_INFO("AST 1100 detected\n");
> + break;
> + case 0x0100:
> + ast->chip = AST2200;
> + DRM_INFO("AST 2200 detected\n");
> + break;
> + case 0x0000:
> + ast->chip = AST2150;
> + DRM_INFO("AST 2150 detected\n");
> + break;
> + default:
> + ast->chip = AST2100;
> + DRM_INFO("AST 2100 detected\n");
> + break;
> }
> + ast->vga2_clone = false;
> + } else {
> + ast->chip = AST2000;
> + DRM_INFO("AST 2000 detected\n");
> }
>
> /* Check if we support wide screen */
> switch (ast->chip) {
> - case AST1180:
> - ast->support_wide_screen = true;
> - break;
> case AST2000:
> ast->support_wide_screen = false;
> break;
> @@ -469,15 +461,13 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
> if (need_post)
> ast_post_gpu(dev);
>
> - if (ast->chip != AST1180) {
> - ret = ast_get_dram_info(dev);
> - if (ret)
> - goto out_free;
> - ast->vram_size = ast_get_vram_info(dev);
> - DRM_INFO("dram MCLK=%u Mhz type=%d bus_width=%d size=%08x\n",
> - ast->mclk, ast->dram_type,
> - ast->dram_bus_width, ast->vram_size);
> - }
> + ret = ast_get_dram_info(dev);
> + if (ret)
> + goto out_free;
> + ast->vram_size = ast_get_vram_info(dev);
> + DRM_INFO("dram MCLK=%u Mhz type=%d bus_width=%d size=%08x\n",
> + ast->mclk, ast->dram_type,
> + ast->dram_bus_width, ast->vram_size);
>
> ret = ast_mm_init(ast);
> if (ret)
> @@ -496,8 +486,7 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
> ast->chip == AST2200 ||
> ast->chip == AST2300 ||
> ast->chip == AST2400 ||
> - ast->chip == AST2500 ||
> - ast->chip == AST1180) {
> + ast->chip == AST2500) {
> dev->mode_config.max_width = 1920;
> dev->mode_config.max_height = 2048;
> } else {
> diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
> index 7d39b858c9f1f..be0e2250708fa 100644
> --- a/drivers/gpu/drm/ast/ast_mode.c
> +++ b/drivers/gpu/drm/ast/ast_mode.c
> @@ -768,9 +768,6 @@ static void ast_crtc_dpms(struct drm_crtc *crtc, int mode)
> {
> struct ast_private *ast = crtc->dev->dev_private;
>
> - if (ast->chip == AST1180)
> - return;
> -
> /* TODO: Maybe control display signal generation with
> * Sync Enable (bit CR17.7).
> */
> @@ -797,11 +794,6 @@ static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
> const struct drm_format_info *format;
> bool succ;
>
> - if (ast->chip == AST1180) {
> - DRM_ERROR("AST 1180 modesetting not supported\n");
> - return -EINVAL;
> - }
> -
> if (!state->enable)
> return 0; /* no mode checks if CRTC is being disabled */
>
> @@ -1043,7 +1035,7 @@ static enum drm_mode_status ast_mode_valid(struct drm_connector *connector,
>
> if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
> (ast->chip == AST2300) || (ast->chip == AST2400) ||
> - (ast->chip == AST2500) || (ast->chip == AST1180)) {
> + (ast->chip == AST2500)) {
> if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
> return MODE_OK;
>
> diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
> index 2d1b186197432..af0c8ebb009a1 100644
> --- a/drivers/gpu/drm/ast/ast_post.c
> +++ b/drivers/gpu/drm/ast/ast_post.c
> @@ -58,13 +58,9 @@ bool ast_is_vga_enabled(struct drm_device *dev)
> struct ast_private *ast = dev->dev_private;
> u8 ch;
>
> - if (ast->chip == AST1180) {
> - /* TODO 1180 */
> - } else {
> - ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT);
> - return !!(ch & 0x01);
> - }
> - return false;
> + ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT);
> +
> + return !!(ch & 0x01);
> }
>
> static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff };
> --
> 2.26.2
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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