/*
 * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of Linux Foundation nor
 *     the names of its contributors may be used to endorse or promote
 *     products derived from this software without specific prior written
 *     permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <assert.h>
#include <reg.h>
#include <err.h>
#include <clock.h>
#include <clock_pll.h>
#include <clock_lib2.h>
#include <platform/clock.h>
#include <platform/iomap.h>


/* Mux source select values */
#define cxo_source_val    0
#define gpll0_source_val  1
#define usb30_pipe_source_val    2

struct clk_freq_tbl rcg_dummy_freq = F_END;


/* Clock Operations */
static struct clk_ops clk_ops_reset =
{
	.reset     = clock_lib2_reset_clk_reset,
};

static struct clk_ops clk_ops_branch =
{
	.enable     = clock_lib2_branch_clk_enable,
	.disable    = clock_lib2_branch_clk_disable,
	.set_rate   = clock_lib2_branch_set_rate,
	.reset      = clock_lib2_branch_clk_reset,
};

static struct clk_ops clk_ops_rcg_mnd =
{
	.enable     = clock_lib2_rcg_enable,
	.set_rate   = clock_lib2_rcg_set_rate,
};

static struct clk_ops clk_ops_rcg =
{
	.enable     = clock_lib2_rcg_enable,
	.set_rate   = clock_lib2_rcg_set_rate,
};

static struct clk_ops clk_ops_cxo =
{
	.enable     = cxo_clk_enable,
	.disable    = cxo_clk_disable,
};

static struct clk_ops clk_ops_pll_vote =
{
	.enable     = pll_vote_clk_enable,
	.disable    = pll_vote_clk_disable,
	.auto_off   = pll_vote_clk_disable,
	.is_enabled = pll_vote_clk_is_enabled,
};

static struct clk_ops clk_ops_vote =
{
	.enable     = clock_lib2_vote_clk_enable,
	.disable    = clock_lib2_vote_clk_disable,
};

/* Clock Sources */
static struct fixed_clk cxo_clk_src =
{
	.c = {
		.rate     = 19200000,
		.dbg_name = "cxo_clk_src",
		.ops      = &clk_ops_cxo,
	},
};

static struct pll_vote_clk gpll0_clk_src =
{
	.en_reg       = (void *) APCS_GPLL_ENA_VOTE,
	.en_mask      = BIT(0),
	.status_reg   = (void *) GPLL0_STATUS,
	.status_mask  = BIT(30),
	.parent       = &cxo_clk_src.c,

	.c = {
		.rate     = 600000000,
		.dbg_name = "gpll0_clk_src",
		.ops      = &clk_ops_pll_vote,
	},
};

/* UART Clocks */

static struct vote_clk gcc_blsp1_ahb_clk = {
	.cbcr_reg = BLSP1_AHB_CBCR,
	.vote_reg = APCS_CLOCK_BRANCH_ENA_VOTE,
	.en_mask = BIT(17),

	.c = {
		.dbg_name = "gcc_blsp1_ahb_clk",
		.ops = &clk_ops_vote,
	},
};

static struct clk_freq_tbl ftbl_gcc_blsp1_2_uart1_6_apps_clk[] =
{
	F( 3686400,  gpll0,    1,  96,  15625),
	F( 7372800,  gpll0,    1, 192,  15625),
	F(14745600,  gpll0,    1, 384,  15625),
	F(16000000,  gpll0,    5,   2,     15),
	F(19200000,    cxo,    1,   0,      0),
	F(24000000,  gpll0,    5,   1,      5),
	F(32000000,  gpll0,    1,   4,     75),
	F(40000000,  gpll0,   15,   0,      0),
	F(46400000,  gpll0,    1,  29,    375),
	F(48000000,  gpll0, 12.5,   0,      0),
	F(51200000,  gpll0,    1,  32,    375),
	F(56000000,  gpll0,    1,   7,     75),
	F(58982400,  gpll0,    1, 1536, 15625),
	F(60000000,  gpll0,   10,   0,      0),
	F_END
};

static struct rcg_clk blsp1_uart1_apps_clk_src =
{
	.cmd_reg      = (uint32_t *) BLSP1_UART1_APPS_CMD_RCGR,
	.cfg_reg      = (uint32_t *) BLSP1_UART1_APPS_CFG_RCGR,
	.m_reg        = (uint32_t *) BLSP1_UART1_APPS_M,
	.n_reg        = (uint32_t *) BLSP1_UART1_APPS_N,
	.d_reg        = (uint32_t *) BLSP1_UART1_APPS_D,

	.set_rate     = clock_lib2_rcg_set_rate_mnd,
	.freq_tbl     = ftbl_gcc_blsp1_2_uart1_6_apps_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "blsp1_uart1_apps_clk",
		.ops      = &clk_ops_rcg_mnd,
	},
};

static struct rcg_clk blsp1_uart2_apps_clk_src =
{
	.cmd_reg      = (uint32_t *) BLSP1_UART2_APPS_CMD_RCGR,
	.cfg_reg      = (uint32_t *) BLSP1_UART2_APPS_CFG_RCGR,
	.m_reg        = (uint32_t *) BLSP1_UART2_APPS_M,
	.n_reg        = (uint32_t *) BLSP1_UART2_APPS_N,
	.d_reg        = (uint32_t *) BLSP1_UART2_APPS_D,

	.set_rate     = clock_lib2_rcg_set_rate_mnd,
	.freq_tbl     = ftbl_gcc_blsp1_2_uart1_6_apps_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "blsp1_uart2_apps_clk",
		.ops      = &clk_ops_rcg_mnd,
	},
};

static struct rcg_clk blsp1_uart3_apps_clk_src =
{
	.cmd_reg      = (uint32_t *) BLSP1_UART3_APPS_CMD_RCGR,
	.cfg_reg      = (uint32_t *) BLSP1_UART3_APPS_CFG_RCGR,
	.m_reg        = (uint32_t *) BLSP1_UART3_APPS_M,
	.n_reg        = (uint32_t *) BLSP1_UART3_APPS_N,
	.d_reg        = (uint32_t *) BLSP1_UART3_APPS_D,

	.set_rate     = clock_lib2_rcg_set_rate_mnd,
	.freq_tbl     = ftbl_gcc_blsp1_2_uart1_6_apps_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "blsp1_uart3_apps_clk",
		.ops      = &clk_ops_rcg_mnd,
	},
};

static struct branch_clk gcc_blsp1_uart1_apps_clk =
{
	.cbcr_reg     = (uint32_t *) BLSP1_UART1_APPS_CBCR,
	.parent       = &blsp1_uart1_apps_clk_src.c,

	.c = {
		.dbg_name = "gcc_blsp1_uart1_apps_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct branch_clk gcc_blsp1_uart2_apps_clk =
{
	.cbcr_reg     = (uint32_t *) BLSP1_UART2_APPS_CBCR,
	.parent       = &blsp1_uart2_apps_clk_src.c,

	.c = {
		.dbg_name = "gcc_blsp1_uart2_apps_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct branch_clk gcc_blsp1_uart3_apps_clk =
{
	.cbcr_reg     = (uint32_t *) BLSP1_UART3_APPS_CBCR,
	.parent       = &blsp1_uart3_apps_clk_src.c,

	.c = {
		.dbg_name = "gcc_blsp1_uart3_apps_clk",
		.ops      = &clk_ops_branch,
	},
};

/* USB Clocks */
static struct clk_freq_tbl ftbl_gcc_usb_hs_system_clk[] =
{
	F(75000000,  gpll0,   8,   0,   0),
	F_END
};

static struct rcg_clk usb_hs_system_clk_src =
{
	.cmd_reg      = (uint32_t *) USB_HS_SYSTEM_CMD_RCGR,
	.cfg_reg      = (uint32_t *) USB_HS_SYSTEM_CFG_RCGR,

	.set_rate     = clock_lib2_rcg_set_rate_hid,
	.freq_tbl     = ftbl_gcc_usb_hs_system_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "usb_hs_system_clk",
		.ops      = &clk_ops_rcg,
	},
};

static struct branch_clk gcc_usb_hs_system_clk =
{
	.cbcr_reg     = (uint32_t *) USB_HS_SYSTEM_CBCR,
	.parent       = &usb_hs_system_clk_src.c,

	.c = {
		.dbg_name = "gcc_usb_hs_system_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct branch_clk gcc_usb_hs_ahb_clk =
{
	.cbcr_reg     = (uint32_t *) USB_HS_AHB_CBCR,
	.has_sibling  = 1,

	.c = {
		.dbg_name = "gcc_usb_hs_ahb_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct clk_freq_tbl ftbl_gcc_usb30_pipe_clk[] = {
	F(          19200000,            cxo,    1,    0,     0),
	F_EXT_SRC(	125000000,    usb30_pipe,    1,    0,     0),
	F_END
};

static struct rcg_clk usb30_pipe_clk_src = {
	.cmd_reg      = (uint32_t *) USB3_PIPE_CMD_RCGR,
	.cfg_reg      = (uint32_t *) USB3_PIPE_CFG_RCGR,
	.set_rate     = clock_lib2_rcg_set_rate_hid,
	.freq_tbl     = ftbl_gcc_usb30_pipe_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "usb30_pipe_clk_src",
		.ops      = &clk_ops_rcg,
	},
};

static struct branch_clk gcc_usb30_pipe_clk = {
	.bcr_reg      = (uint32_t *) USB3PHY_PHY_BCR,
	.cbcr_reg     = (uint32_t *) USB3_PIPE_CBCR,
	.parent       = &usb30_pipe_clk_src.c,
	.has_sibling  = 0,

	.c = {
		.dbg_name = "gcc_usb30_pipe_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct clk_freq_tbl ftbl_gcc_usb30_master_clk[] =
{
	F(125000000, gpll0, 1, 5, 24),
	F_END
};

static struct rcg_clk usb30_master_clk_src =
{
	.cmd_reg      = (uint32_t *) GCC_USB30_MASTER_CMD_RCGR,
	.cfg_reg      = (uint32_t *) GCC_USB30_MASTER_CFG_RCGR,
	.m_reg        = (uint32_t *) GCC_USB30_MASTER_M,
	.n_reg        = (uint32_t *) GCC_USB30_MASTER_N,
	.d_reg        = (uint32_t *) GCC_USB30_MASTER_D,

	.set_rate     = clock_lib2_rcg_set_rate_mnd,
	.freq_tbl     = ftbl_gcc_usb30_master_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "usb30_master_clk_src",
		.ops      = &clk_ops_rcg,
	},
};


static struct branch_clk gcc_usb30_master_clk =
{
	.cbcr_reg     = (uint32_t *) GCC_USB30_MASTER_CBCR,
	.parent       = &usb30_master_clk_src.c,

	.c = {
		.dbg_name = "gcc_usb30_master_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct clk_freq_tbl ftbl_gcc_usb30_aux_clk[] = {
	F(   1000000,         cxo,    1,    5,    96),
	F_END
};

static struct rcg_clk usb30_aux_clk_src = {
	.cmd_reg      = (uint32_t *) USB3_AUX_CMD_RCGR,
	.cfg_reg      = (uint32_t *) USB3_AUX_CFG_RCGR,
	.m_reg        = (uint32_t *) USB3_AUX_M,
	.n_reg        = (uint32_t *) USB3_AUX_N,
	.d_reg        = (uint32_t *) USB3_AUX_D,

	.set_rate     = clock_lib2_rcg_set_rate_mnd,
	.freq_tbl     = ftbl_gcc_usb30_aux_clk,
	.current_freq = &rcg_dummy_freq,

	.c = {
		.dbg_name = "usb30_aux_clk_src",
		.ops      = &clk_ops_rcg_mnd,
	},
};

static struct branch_clk gcc_usb30_aux_clk = {
	.cbcr_reg = (uint32_t *) USB3_AUX_CBCR,
	.parent   = &usb30_aux_clk_src.c,

	.c = {
		.dbg_name = "gcc_usb30_aux_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct branch_clk gcc_sys_noc_usb30_axi_clk =
{
	.cbcr_reg     = (uint32_t *) SYS_NOC_USB3_AXI_CBCR,
	.has_sibling  = 1,

	.c = {
		.dbg_name = "gcc_sys_noc_usb3_axi_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct branch_clk gcc_usb_phy_cfg_ahb_clk = {
	.cbcr_reg    = (uint32_t *) USB_PHY_CFG_AHB_CBCR,
	.has_sibling = 1,

	.c = {
		.dbg_name = "gcc_usb_phy_cfg_ahb_clk",
		.ops      = &clk_ops_branch,
	},
};

static struct reset_clk gcc_usb30_phy_com_reset = {
	.bcr_reg = (uint32_t *) USB3_PHY_COM_BCR,

	.c = {
		.dbg_name = "usb30_phy_com_reset",
		.ops      = &clk_ops_reset,
	},
};

static struct reset_clk gcc_usb30_phy_reset = {
	.bcr_reg = (uint32_t *) USB3_PHY_BCR,

	.c = {
		.dbg_name = "usb30_phy_reset",
		.ops      = &clk_ops_reset,
	},
};

static struct branch_clk gcc_usb2b_phy_sleep_clk = {
	.bcr_reg      = (uint32_t *) USB2B_PHY_BCR,
	.cbcr_reg     = (uint32_t *) USB2B_PHY_SLEEP_CBCR,
	.has_sibling  = 1,

	.c = {
		.dbg_name = "usb2b_phy_sleep_clk",
		.ops      = &clk_ops_branch,
	},
};

/* Clock lookup table */
static struct clk_lookup mdm_9635_clocks[] =
{
	CLK_LOOKUP("uart_iface_clk", gcc_blsp1_ahb_clk.c),
	CLK_LOOKUP("uart1_core_clk", gcc_blsp1_uart1_apps_clk.c),
	CLK_LOOKUP("uart2_core_clk", gcc_blsp1_uart2_apps_clk.c),
	CLK_LOOKUP("uart3_core_clk", gcc_blsp1_uart3_apps_clk.c),

	CLK_LOOKUP("usb_iface_clk",  gcc_usb_hs_ahb_clk.c),
	CLK_LOOKUP("usb_core_clk",   gcc_usb_hs_system_clk.c),

	CLK_LOOKUP("usb30_iface_clk",  gcc_sys_noc_usb30_axi_clk.c),
	CLK_LOOKUP("usb30_master_clk", gcc_usb30_master_clk.c),
	CLK_LOOKUP("usb30_pipe_clk",   gcc_usb30_pipe_clk.c),
	CLK_LOOKUP("usb30_aux_clk",    gcc_usb30_aux_clk.c),

	CLK_LOOKUP("usb2b_phy_sleep_clk", gcc_usb2b_phy_sleep_clk.c),
	CLK_LOOKUP("usb30_phy_reset",     gcc_usb30_phy_reset.c),
	CLK_LOOKUP("usb30_phy_com_reset", gcc_usb30_phy_com_reset.c),

	CLK_LOOKUP("usb_phy_cfg_ahb_clk", gcc_usb_phy_cfg_ahb_clk.c),
};


void platform_clock_init(void)
{
	clk_init(mdm_9635_clocks, ARRAY_SIZE(mdm_9635_clocks));
}