LCD Controller.. need help.How to read value from Output Pin? Found Logic Contention

ENTITY lcd_interface IS
--Add Generic
PORT (db     		: INOUT STD_LOGIC_VECTOR (7 DOWNTO 0);
	  en, rs, rw 		: OUT STD_LOGIC;
--	  clk				: IN STD_LOGIC;
	  lcd_clk_tick		: IN STD_LOGIC;				-- REMOVE AFTER TESTING
	  reset		   		: IN STD_LOGIC;
	  lcd_count_tick_o 	: OUT STD_LOGIC);
END lcd_interface;

ARCHITECTURE controller OF lcd_interface IS
TYPE STATE_TYPE IS (INIT_0, INIT_1, INIT_2, EN_H, EN_L);		-- ADD EN_H??
SIGNAL state, next_state : STATE_TYPE;
SIGNAL i_en				    : STD_LOGIC;
SIGNAL clk_count, lcd_count : STD_LOGIC_VECTOR (9 DOWNTO 0) := "0000000000";
--SIGNAL lcd_clk_tick 		: STD_LOGIC;
SIGNAL db_out, db_in		: STD_LOGIC_VECTOR (7 DOWNTO 0);
BEGIN

lcd_count_tick_o <= lcd_clk_tick;
en <= i_en;
db <= db_out when i_en = '1' else (OTHERS => 'Z');  					-- *FIND OUT IF THIS PART IS CORRECT!!*
db_in <= db;

--	PROCESS (reset, clk)
--	BEGIN
--		IF reset = '0' THEN
--			clk_count <= "0000000000";
--		ELSIF clk'EVENT AND clk = '1' THEN
--			IF clk_count < "1111101000" THEN  					-- wait 20us (clk_count = 1000)
--				clk_count <= clk_count + 1;
--				lcd_clk_tick <= '0';
--			ELSE
--				clk_count <= (OTHERS => '0');
--				lcd_clk_tick <= '1';         					-- generates pulse every 20uS (50kHz)
--			END IF;
--		END IF;
--	END PROCESS;

	
	PROCESS (reset, lcd_clk_tick)
	BEGIN
		IF reset = '0' THEN
			lcd_count <= "0000000000";
			db_out <= (OTHERS => '0');								-- data bus
			i_en <= '0';											-- en = '1' starts data read/write
			rs <= '0';											-- rs = reg select ('0'/'1' = instr_reg(write) / data_reg(read))
			rw <= '0';											-- rw' = read/write'
			state <= INIT_0;
		ELSIF lcd_clk_tick'EVENT AND lcd_clk_tick = '1' THEN
			CASE state IS

-- INIT SEQUENCE												 
				WHEN INIT_0 =>
					IF lcd_count < "1011101110" THEN			 -- wait 15ms (lcd_count = 750)
						lcd_count <= lcd_count + 1;
					ELSE
						lcd_count <= (OTHERS => '0');
						rs <= '0';
						rw <= '0';
						db_out <= "00110000";
						state <= EN_H;							-- rs and rw' need to be stable before en = 'H'
						next_state <= INIT_1;
					END IF;
						
				WHEN INIT_1 =>
					IF lcd_count < "00011010010" THEN			 -- wait 4.2ms (lcd_count = 210)
						lcd_count <= lcd_count + 1;
					ELSE
						lcd_count <= (OTHERS => '0');
						rs <= '0';
						rw <= '0';
						db_out <= "00110000";
						state <= EN_H;
						next_state <= INIT_2;
					END IF;
						
				WHEN INIT_2 =>
					IF lcd_count < "00000000101" THEN			 -- wait 100us (lcd_count = 5)
						lcd_count <= lcd_count + 1;
					ELSE
						lcd_count <= (OTHERS => '0');
						rs <= '0';
						rw <= '0';
						db_out <= "00110000";
						state <= EN_H;
						next_state <= INIT_0;
					END IF;
					
					

-- TRANSFER SEQUENCE						  -- change enable so it's before??  _/-------\_
				WHEN EN_H =>
						i_en <= '1';
						state <= EN_L;
				WHEN EN_L =>
					IF lcd_count < "0000000001" THEN			-- wait 20us
						lcd_count <= lcd_count + 1;
					ELSE
						lcd_count <= (OTHERS => '0');
						i_en <= '0';
						state <= next_state;
					END IF;
				END CASE;
			END IF;		
	END PROCESS;
END controller;