| /* Copyright (c) 2013-2015, 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 The 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 "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 <stdint.h> |
| #include <debug.h> |
| #include <reg.h> |
| #include <mmc.h> |
| #include <clock.h> |
| #include <pm8x41.h> |
| #include <platform/clock.h> |
| #include <platform/iomap.h> |
| #include <platform/timer.h> |
| #include <rpm-smd.h> |
| #include <regulator.h> |
| #include <platform.h> |
| |
| #define RPM_CE_CLK_TYPE 0x6563 |
| #define CE2_CLK_ID 0x1 |
| #define RPM_SMD_KEY_RATE 0x007A484B |
| |
| #define MAX_LOOPS 500 |
| |
| uint32_t CE2_CLK[][8]= |
| { |
| { |
| RPM_CE_CLK_TYPE, CE2_CLK_ID, |
| KEY_SOFTWARE_ENABLE, 4, GENERIC_DISABLE, |
| RPM_SMD_KEY_RATE, 4, 0, |
| }, |
| { |
| RPM_CE_CLK_TYPE, CE2_CLK_ID, |
| KEY_SOFTWARE_ENABLE, 4, GENERIC_ENABLE, |
| RPM_SMD_KEY_RATE, 4, 176128, |
| }, |
| }; |
| |
| void hsusb_clock_init(void) |
| { |
| int ret; |
| struct clk *iclk, *cclk; |
| |
| ret = clk_get_set_enable("usb_iface_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_iface_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb_core_clk", 75000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_core_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| /* Wait for the clocks to be stable since we are disabling soon after. */ |
| mdelay(1); |
| |
| iclk = clk_get("usb_iface_clk"); |
| cclk = clk_get("usb_core_clk"); |
| |
| clk_disable(iclk); |
| clk_disable(cclk); |
| |
| /* Wait for the clock disable to complete. */ |
| mdelay(1); |
| |
| /* Start the block reset for usb */ |
| writel(1, USB_HS_BCR); |
| |
| /* Wait for reset to complete. */ |
| mdelay(1); |
| |
| /* Take usb block out of reset */ |
| writel(0, USB_HS_BCR); |
| |
| /* Wait for the block to be brought out of reset. */ |
| mdelay(1); |
| |
| ret = clk_enable(iclk); |
| |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_iface_clk after async ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_enable(cclk); |
| |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_iface_clk after async ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb_phy_cfg_ahb2phy_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to enable usb_phy_cfg_ahb2phy_clk = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void clock_init_mmc(uint32_t interface) |
| { |
| char clk_name[64]; |
| int ret; |
| |
| snprintf(clk_name, sizeof(clk_name), "sdc%u_iface_clk", interface); |
| |
| /* enable interface clock */ |
| ret = clk_get_set_enable(clk_name, 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set sdc%u_iface_clk ret = %d\n", interface, ret); |
| ASSERT(0); |
| } |
| } |
| |
| /* Configure MMC clock */ |
| void clock_config_mmc(uint32_t interface, uint32_t freq) |
| { |
| int ret = 0; |
| char clk_name[64]; |
| |
| snprintf(clk_name, sizeof(clk_name), "sdc%u_core_clk", interface); |
| |
| if(freq == MMC_CLK_400KHZ) |
| { |
| ret = clk_get_set_enable(clk_name, 400000, 1); |
| } |
| else if(freq == MMC_CLK_50MHZ) |
| { |
| ret = clk_get_set_enable(clk_name, 50000000, 1); |
| } |
| else if(freq == MMC_CLK_96MHZ) |
| { |
| ret = clk_get_set_enable(clk_name, 100000000, 1); |
| } |
| else if(freq == MMC_CLK_192MHZ) |
| { |
| if (platform_is_msm8992()) |
| ret = clk_get_set_enable(clk_name, 172000000, 1); |
| else |
| ret = clk_get_set_enable(clk_name, 192000000, 1); |
| } |
| else if(freq == MMC_CLK_200MHZ) |
| { |
| ret = clk_get_set_enable(clk_name, 200000000, 1); |
| } |
| else if(freq == MMC_CLK_400MHZ) |
| { |
| if (platform_is_msm8992()) |
| ret = clk_get_set_enable(clk_name, 344000000, 1); |
| else |
| ret = clk_get_set_enable(clk_name, 384000000, 1); |
| } |
| else |
| { |
| dprintf(CRITICAL, "sdc frequency (%u) is not supported\n", freq); |
| ASSERT(0); |
| } |
| |
| |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set sdc%u_core_clk ret = %d\n", interface, ret); |
| ASSERT(0); |
| } |
| } |
| |
| /* Configure UART clock based on the UART block id*/ |
| void clock_config_uart_dm(uint8_t id) |
| { |
| int ret; |
| char iclk[64]; |
| char cclk[64]; |
| |
| snprintf(iclk, sizeof(iclk), "uart%u_iface_clk", id); |
| snprintf(cclk, sizeof(cclk), "uart%u_core_clk", id); |
| |
| ret = clk_get_set_enable(iclk, 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set uart%u_iface_clk ret = %d\n", id, ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable(cclk, 7372800, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set uart%u_core_clk ret = %d\n", id, ret); |
| ASSERT(0); |
| } |
| } |
| |
| /* Function to asynchronously reset CE (Crypto Engine). |
| * Function assumes that all the CE clocks are off. |
| */ |
| static void ce_async_reset(uint8_t instance) |
| { |
| if (instance == 2) |
| { |
| /* Start the block reset for CE */ |
| writel(1, GCC_CE2_BCR); |
| udelay(2); |
| /* Take CE block out of reset */ |
| writel(0, GCC_CE2_BCR); |
| udelay(2); |
| } |
| else |
| { |
| dprintf(CRITICAL, "Unsupported CE instance: %u\n", instance); |
| ASSERT(0); |
| } |
| } |
| |
| void clock_ce_enable(uint8_t instance) |
| { |
| if (instance == 2) |
| rpm_send_data(&CE2_CLK[GENERIC_ENABLE][0], 24, RPM_REQUEST_TYPE); |
| else |
| { |
| dprintf(CRITICAL, "Unsupported CE instance: %u\n", instance); |
| ASSERT(0); |
| } |
| } |
| |
| void clock_ce_disable(uint8_t instance) |
| { |
| if (instance == 2) |
| rpm_send_data(&CE2_CLK[GENERIC_DISABLE][0], 24, RPM_REQUEST_TYPE); |
| else |
| { |
| dprintf(CRITICAL, "Unsupported CE instance: %u\n", instance); |
| ASSERT(0); |
| } |
| } |
| |
| void clock_config_ce(uint8_t instance) |
| { |
| /* Need to enable the clock before disabling since the clk_disable() |
| * has a check to default to nop when the clk_enable() is not called |
| * on that particular clock. |
| */ |
| clock_ce_enable(instance); |
| |
| clock_ce_disable(instance); |
| |
| ce_async_reset(instance); |
| |
| clock_ce_enable(instance); |
| |
| } |
| |
| void clock_usb30_gdsc_enable(void) |
| { |
| uint32_t reg = readl(GCC_USB30_GDSCR); |
| |
| reg &= ~(0x1); |
| |
| writel(reg, GCC_USB30_GDSCR); |
| } |
| |
| /* enables usb30 clocks */ |
| void clock_usb30_init(void) |
| { |
| int ret; |
| |
| ret = clk_get_set_enable("usb30_iface_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_iface_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| clock_usb30_gdsc_enable(); |
| |
| ret = clk_get_set_enable("usb30_master_clk", 125000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_master_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb30_phy_aux_clk", 1200000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_phy_aux_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb30_mock_utmi_clk", 60000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_mock_utmi_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb30_sleep_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_sleep_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb_phy_cfg_ahb2phy_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to enable usb_phy_cfg_ahb2phy_clk = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| pm8x41_lnbb_clock_ctrl(1); |
| } |
| |
| void clock_bumpup_pipe3_clk() |
| { |
| int ret = 0; |
| |
| ret = clk_get_set_enable("usb30_pipe_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| return; |
| } |
| |
| void mdp_gdsc_ctrl(uint8_t enable) |
| { |
| uint32_t reg = 0; |
| reg = readl(MDP_GDSCR); |
| if (enable) { |
| if (!(reg & GDSC_POWER_ON_BIT)) { |
| reg &= ~(BIT(0) | GDSC_EN_FEW_WAIT_MASK); |
| reg |= GDSC_EN_FEW_WAIT_256_MASK; |
| writel(reg, MDP_GDSCR); |
| while(!(readl(MDP_GDSCR) & (GDSC_POWER_ON_BIT))); |
| } else { |
| dprintf(INFO, "MDP GDSC already enabled\n"); |
| } |
| } else { |
| reg |= BIT(0); |
| writel(reg, MDP_GDSCR); |
| while(readl(MDP_GDSCR) & (GDSC_POWER_ON_BIT)); |
| } |
| } |
| |
| /* Configure MDP clock */ |
| void mdp_clock_enable(void) |
| { |
| int ret; |
| |
| /* Set MDP clock to 240MHz */ |
| ret = clk_get_set_enable("mdp_ahb_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mdp_ahb_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("mdss_mdp_clk_src", 300000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mdp_clk_src ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("mdss_vsync_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mdss vsync clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("mdss_mdp_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mdp_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void mdp_clock_disable() |
| { |
| clk_disable(clk_get("mdss_vsync_clk")); |
| clk_disable(clk_get("mdss_mdp_clk")); |
| clk_disable(clk_get("mdss_mdp_clk_src")); |
| clk_disable(clk_get("mdp_ahb_clk")); |
| |
| } |
| |
| void mmss_bus_clock_enable(void) |
| { |
| int ret; |
| /* Configure MMSSNOC AXI clock */ |
| ret = clk_get_set_enable("mmss_mmssnoc_axi_clk", 300000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mmssnoc_axi_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| /* Configure S0 AXI clock */ |
| ret = clk_get_set_enable("mmss_s0_axi_clk", 300000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mmss_s0_axi_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| /* Configure AXI clock */ |
| ret = clk_get_set_enable("mdss_axi_clk", 300000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set mdss_axi_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void mmss_bus_clock_disable(void) |
| { |
| /* Disable MDSS AXI clock */ |
| clk_disable(clk_get("mdss_axi_clk")); |
| |
| /* Disable MMSSNOC S0AXI clock */ |
| clk_disable(clk_get("mmss_s0_axi_clk")); |
| |
| /* Disable MMSSNOC AXI clock */ |
| clk_disable(clk_get("mmss_mmssnoc_axi_clk")); |
| } |
| |
| static void rcg_update_config(uint32_t reg) |
| { |
| int i; |
| |
| for (i = 0; i < MAX_LOOPS; i++) { |
| if (!(readl(reg) & BIT(0))) |
| return; |
| udelay(1); |
| } |
| |
| dprintf(CRITICAL, "failed to update rcg config for reg = 0x%x\n", reg); |
| ASSERT(0); |
| } |
| |
| static void branch_clk_halt_check(uint32_t reg) |
| { |
| int i; |
| |
| for (i = 0; i < MAX_LOOPS; i++) { |
| if (!(readl(reg) & BIT(31))) |
| return; |
| udelay(1); |
| } |
| |
| dprintf(CRITICAL, "failed to enable branch for reg = 0x%x\n", reg); |
| ASSERT(0); |
| } |
| |
| void mmss_dsi_clock_enable(uint32_t cfg_rcgr, uint32_t flags, |
| uint8_t pclk0_m, uint8_t pclk0_n, uint8_t pclk0_d) |
| { |
| int ret; |
| |
| if (flags & MMSS_DSI_CLKS_FLAG_DSI0) { |
| /* Enable DSI0 branch clocks */ |
| |
| /* Set the source for DSI0 byte RCG */ |
| writel(cfg_rcgr, DSI_BYTE0_CFG_RCGR); |
| /* Set the update RCG bit */ |
| writel(0x1, DSI_BYTE0_CMD_RCGR); |
| rcg_update_config(DSI_BYTE0_CMD_RCGR); |
| /* Enable the branch clock */ |
| writel(0x1, DSI_BYTE0_CBCR); |
| branch_clk_halt_check(DSI_BYTE0_CBCR); |
| |
| /* Set the source for DSI0 pixel RCG */ |
| writel(cfg_rcgr, DSI_PIXEL0_CFG_RCGR); |
| /* Set the MND for DSI0 pixel clock */ |
| writel(pclk0_m, DSI_PIXEL0_M); |
| writel(pclk0_n, DSI_PIXEL0_N); |
| writel(pclk0_d, DSI_PIXEL0_D); |
| /* Set the update RCG bit */ |
| writel(0x1, DSI_PIXEL0_CMD_RCGR); |
| rcg_update_config(DSI_PIXEL0_CMD_RCGR); |
| /* Enable the branch clock */ |
| writel(0x1, DSI_PIXEL0_CBCR); |
| branch_clk_halt_check(DSI_PIXEL0_CBCR); |
| |
| ret = clk_get_set_enable("mdss_esc0_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set esc0_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| if (flags & MMSS_DSI_CLKS_FLAG_DSI1) { |
| /* Enable DSI1 branch clocks */ |
| |
| /* Set the source for DSI1 byte RCG */ |
| writel(cfg_rcgr, DSI_BYTE1_CFG_RCGR); |
| /* Set the update RCG bit */ |
| writel(0x1, DSI_BYTE1_CMD_RCGR); |
| rcg_update_config(DSI_BYTE1_CMD_RCGR); |
| /* Enable the branch clock */ |
| writel(0x1, DSI_BYTE1_CBCR); |
| branch_clk_halt_check(DSI_BYTE1_CBCR); |
| |
| /* Set the source for DSI1 pixel RCG */ |
| writel(cfg_rcgr, DSI_PIXEL1_CFG_RCGR); |
| /* Set the MND for DSI1 pixel clock */ |
| writel(pclk0_m, DSI_PIXEL1_M); |
| writel(pclk0_n, DSI_PIXEL1_N); |
| writel(pclk0_d, DSI_PIXEL1_D); |
| /* Set the update RCG bit */ |
| writel(0x1, DSI_PIXEL1_CMD_RCGR); |
| rcg_update_config(DSI_PIXEL1_CMD_RCGR); |
| /* Enable the branch clock */ |
| writel(0x1, DSI_PIXEL1_CBCR); |
| branch_clk_halt_check(DSI_PIXEL1_CBCR); |
| |
| ret = clk_get_set_enable("mdss_esc1_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set esc1_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| } |
| |
| void mmss_dsi_clock_disable(uint32_t flags) |
| { |
| if (flags & MMSS_DSI_CLKS_FLAG_DSI0) { |
| clk_disable(clk_get("mdss_esc0_clk")); |
| writel(0x0, DSI_BYTE0_CBCR); |
| writel(0x0, DSI_PIXEL0_CBCR); |
| } |
| |
| if (flags & MMSS_DSI_CLKS_FLAG_DSI1) { |
| clk_disable(clk_get("mdss_esc1_clk")); |
| writel(0x0, DSI_BYTE1_CBCR); |
| writel(0x0, DSI_PIXEL1_CBCR); |
| } |
| } |
| |
| void hdmi_core_ahb_clk_enable(void) |
| { |
| int ret; |
| |
| /* Configure hdmi ahb clock */ |
| ret = clk_get_set_enable("hdmi_ahb_clk", 0, 1); |
| if(ret) { |
| dprintf(CRITICAL, "failed to set hdmi_ahb_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| /* Configure hdmi core clock */ |
| ret = clk_get_set_enable("hdmi_core_clk", 19200000, 1); |
| if(ret) { |
| dprintf(CRITICAL, "failed to set hdmi_core_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void hdmi_pixel_clk_enable(uint32_t rate) |
| { |
| int ret; |
| |
| /* Configure hdmi pixel clock */ |
| ret = clk_get_set_enable("hdmi_extp_clk", rate, 1); |
| if(ret) { |
| dprintf(CRITICAL, "failed to set hdmi_extp_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void hdmi_pixel_clk_disable(void) |
| { |
| clk_disable(clk_get("hdmi_extp_clk")); |
| } |
| |
| void hdmi_core_ahb_clk_disable(void) |
| { |
| clk_disable(clk_get("hdmi_core_clk")); |
| clk_disable(clk_get("hdmi_ahb_clk")); |
| } |