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Commit 37b9b81f authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Dave Airlie
Browse files

drm/ast: Cleanup analog init code path 



Move the MMIO mangling to a separate routine and actually
disable the DVO output when using pure analog.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 42fb1427

drivers/gpu/drm/ast/ast_dp501.c

+31 −18
Original line number Diff line number Diff line
@@ -379,27 +379,12 @@ static bool ast_init_dvo(struct drm_device *dev) 
	return true;

}



void ast_init_3rdtx(struct drm_device *dev)



static void ast_init_analog(struct drm_device *dev)

{

	struct ast_private *ast = dev->dev_private;

	u8 jreg;

	u32 data;

	if (ast->chip == AST2300 || ast->chip == AST2400) {

		jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);

		switch (jreg & 0x0e) {

		case 0x04:

			ast_init_dvo(dev);

			break;

		case 0x08:

			ast_launch_m68k(dev);

			break;

		case 0x0c:

			ast_init_dvo(dev);

			break;

		default:

			if (ast->tx_chip_type == AST_TX_SIL164)

				ast_init_dvo(dev);

			else {



	/*

	 * Set DAC source to VGA mode in SCU2C via the P2A

	 * bridge. First configure the P2U to target the SCU
@@ -407,15 +392,43 @@ void ast_init_3rdtx(struct drm_device *dev) 
	 */

	ast_write32(ast, 0xf004, 0x1e6e0000);

	ast_write32(ast, 0xf000, 0x1);



	/* Then unlock the SCU with the magic password */

	ast_write32(ast, 0x12000, 0x1688a8a8);

	ast_write32(ast, 0x12000, 0x1688a8a8);

	ast_write32(ast, 0x12000, 0x1688a8a8);



	/* Finally, clear bits [17:16] of SCU2c */

	data = ast_read32(ast, 0x1202c);

	data &= 0xfffcffff;

	ast_write32(ast, 0, data);



	/* Disable DVO */

	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xcf, 0x00);

}



void ast_init_3rdtx(struct drm_device *dev)

{

	struct ast_private *ast = dev->dev_private;

	u8 jreg;



	if (ast->chip == AST2300 || ast->chip == AST2400) {

		jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);

		switch (jreg & 0x0e) {

		case 0x04:

			ast_init_dvo(dev);

			break;

		case 0x08:

			ast_launch_m68k(dev);

			break;

		case 0x0c:

			ast_init_dvo(dev);

			break;

		default:

			if (ast->tx_chip_type == AST_TX_SIL164)

				ast_init_dvo(dev);

			else

				ast_init_analog(dev);

		}

	}

}